./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_minInArray_ground-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/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_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-examples/standard_minInArray_ground-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/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_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/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 a2fc902d06a9677a744e95b3e4aa2d9ade69a1fc168c97563c1ba760b1699777 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 04:30:32,616 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 04:30:32,720 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 04:30:32,724 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 04:30:32,724 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 04:30:32,751 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 04:30:32,753 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 04:30:32,754 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 04:30:32,755 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 04:30:32,755 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 04:30:32,756 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 04:30:32,756 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 04:30:32,756 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 04:30:32,757 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 04:30:32,757 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 04:30:32,759 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 04:30:32,760 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 04:30:32,760 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 04:30:32,760 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 04:30:32,761 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 04:30:32,761 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 04:30:32,765 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 04:30:32,766 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 04:30:32,776 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 04:30:32,776 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 04:30:32,776 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 04:30:32,777 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 04:30:32,777 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 04:30:32,778 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 04:30:32,778 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 04:30:32,778 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 04:30:32,779 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 04:30:32,779 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 04:30:32,779 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 04:30:32,780 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 04:30:32,780 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 04:30:32,781 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 04:30:32,781 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 04:30:32,782 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:30:32,782 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 04:30:32,783 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 04:30:32,783 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 04:30:32,784 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 04:30:32,784 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 04:30:32,784 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 04:30:32,784 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 04:30:32,785 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 04:30:32,785 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_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a2fc902d06a9677a744e95b3e4aa2d9ade69a1fc168c97563c1ba760b1699777 [2024-11-09 04:30:33,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 04:30:33,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 04:30:33,128 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 04:30:33,130 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 04:30:33,132 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 04:30:33,133 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/array-examples/standard_minInArray_ground-2.i Unable to find full path for "g++" [2024-11-09 04:30:35,422 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 04:30:35,629 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 04:30:35,629 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/sv-benchmarks/c/array-examples/standard_minInArray_ground-2.i [2024-11-09 04:30:35,637 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/data/8272ffbbe/dc286ad96b094d83909a9350be03a164/FLAG57d2bc77f [2024-11-09 04:30:35,653 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/data/8272ffbbe/dc286ad96b094d83909a9350be03a164 [2024-11-09 04:30:35,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 04:30:35,657 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 04:30:35,659 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 04:30:35,659 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 04:30:35,665 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 04:30:35,665 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:30:35" (1/1) ... [2024-11-09 04:30:35,666 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a207fb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:30:35, skipping insertion in model container [2024-11-09 04:30:35,666 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:30:35" (1/1) ... [2024-11-09 04:30:35,688 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 04:30:35,891 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_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/sv-benchmarks/c/array-examples/standard_minInArray_ground-2.i[821,834] [2024-11-09 04:30:35,916 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:30:35,927 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 04:30:35,944 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_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/sv-benchmarks/c/array-examples/standard_minInArray_ground-2.i[821,834] [2024-11-09 04:30:35,956 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:30:35,976 INFO L204 MainTranslator]: Completed translation [2024-11-09 04:30:35,976 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:30:35 WrapperNode [2024-11-09 04:30:35,977 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 04:30:35,978 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 04:30:35,979 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 04:30:35,979 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 04:30:35,987 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:30:35" (1/1) ... [2024-11-09 04:30:35,996 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:30:35" (1/1) ... [2024-11-09 04:30:36,016 INFO L138 Inliner]: procedures = 16, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56 [2024-11-09 04:30:36,016 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 04:30:36,017 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 04:30:36,017 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 04:30:36,018 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 04:30:36,027 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:30:35" (1/1) ... [2024-11-09 04:30:36,027 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:30:35" (1/1) ... [2024-11-09 04:30:36,030 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:30:35" (1/1) ... [2024-11-09 04:30:36,030 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:30:35" (1/1) ... [2024-11-09 04:30:36,038 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:30:35" (1/1) ... [2024-11-09 04:30:36,046 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:30:35" (1/1) ... [2024-11-09 04:30:36,047 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:30:35" (1/1) ... [2024-11-09 04:30:36,048 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:30:35" (1/1) ... [2024-11-09 04:30:36,053 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 04:30:36,054 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 04:30:36,054 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 04:30:36,054 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 04:30:36,059 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:30:35" (1/1) ... [2024-11-09 04:30:36,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:30:36,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:30:36,106 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 04:30:36,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 04:30:36,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 04:30:36,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 04:30:36,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 04:30:36,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 04:30:36,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 04:30:36,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 04:30:36,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 04:30:36,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 04:30:36,234 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 04:30:36,236 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 04:30:36,397 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-09 04:30:36,398 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 04:30:36,452 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 04:30:36,452 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 04:30:36,453 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:30:36 BoogieIcfgContainer [2024-11-09 04:30:36,453 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 04:30:36,458 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 04:30:36,458 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 04:30:36,462 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 04:30:36,463 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 04:30:35" (1/3) ... [2024-11-09 04:30:36,464 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55b4db5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:30:36, skipping insertion in model container [2024-11-09 04:30:36,465 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:30:35" (2/3) ... [2024-11-09 04:30:36,466 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55b4db5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:30:36, skipping insertion in model container [2024-11-09 04:30:36,466 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:30:36" (3/3) ... [2024-11-09 04:30:36,468 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_minInArray_ground-2.i [2024-11-09 04:30:36,491 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 04:30:36,492 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 04:30:36,554 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 04:30:36,561 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;@6ffcf16d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 04:30:36,561 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 04:30:36,566 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:30:36,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 04:30:36,572 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:30:36,572 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:30:36,573 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:30:36,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:30:36,578 INFO L85 PathProgramCache]: Analyzing trace with hash 190647081, now seen corresponding path program 1 times [2024-11-09 04:30:36,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:30:36,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308696020] [2024-11-09 04:30:36,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:36,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:30:36,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:36,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:30:36,804 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:30:36,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308696020] [2024-11-09 04:30:36,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308696020] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:30:36,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:30:36,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 04:30:36,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793553819] [2024-11-09 04:30:36,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:30:36,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:30:36,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:30:36,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:30:36,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:30:36,838 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:30:36,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:30:36,904 INFO L93 Difference]: Finished difference Result 31 states and 45 transitions. [2024-11-09 04:30:36,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:30:36,907 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-09 04:30:36,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:30:36,914 INFO L225 Difference]: With dead ends: 31 [2024-11-09 04:30:36,914 INFO L226 Difference]: Without dead ends: 17 [2024-11-09 04:30:36,916 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:30:36,920 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 2 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:30:36,922 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 23 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:30:36,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-09 04:30:36,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-09 04:30:36,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:30:36,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2024-11-09 04:30:36,956 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 9 [2024-11-09 04:30:36,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:30:36,957 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2024-11-09 04:30:36,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:30:36,957 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2024-11-09 04:30:36,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 04:30:36,958 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:30:36,958 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:30:36,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 04:30:36,959 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:30:36,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:30:36,960 INFO L85 PathProgramCache]: Analyzing trace with hash 136220862, now seen corresponding path program 1 times [2024-11-09 04:30:36,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:30:36,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954539286] [2024-11-09 04:30:36,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:36,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:30:36,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:37,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 04:30:37,159 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:30:37,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954539286] [2024-11-09 04:30:37,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954539286] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:30:37,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881998497] [2024-11-09 04:30:37,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:37,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:30:37,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:30:37,163 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:30:37,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 04:30:37,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:37,257 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 04:30:37,262 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:37,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 04:30:37,316 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:30:37,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 04:30:37,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881998497] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:30:37,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2142417103] [2024-11-09 04:30:37,375 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 04:30:37,376 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:30:37,381 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:30:37,387 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:30:37,387 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:30:38,256 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:30:38,872 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '162#(and (exists ((|v_ULTIMATE.start_main_~min~0#1_25| Int) (|v_ULTIMATE.start_main_#t~mem4#1_22| Int)) (and (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#a~0#1.base|) (or (and (= |ULTIMATE.start_main_~min~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996)) (<= (+ (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996) 1) |v_ULTIMATE.start_main_~min~0#1_25|)) (and (= |ULTIMATE.start_main_#t~mem4#1| |v_ULTIMATE.start_main_#t~mem4#1_22|) (<= |v_ULTIMATE.start_main_~min~0#1_25| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996)) (= |v_ULTIMATE.start_main_~min~0#1_25| |ULTIMATE.start_main_~min~0#1|))))) (<= (+ (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 0) 1) |ULTIMATE.start_main_~min~0#1|) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-09 04:30:38,872 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:30:38,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:30:38,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-09 04:30:38,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585397204] [2024-11-09 04:30:38,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:30:38,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 04:30:38,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:30:38,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 04:30:38,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2024-11-09 04:30:38,877 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:30:38,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:30:38,953 INFO L93 Difference]: Finished difference Result 39 states and 55 transitions. [2024-11-09 04:30:38,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 04:30:38,954 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-09 04:30:38,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:30:38,955 INFO L225 Difference]: With dead ends: 39 [2024-11-09 04:30:38,955 INFO L226 Difference]: Without dead ends: 27 [2024-11-09 04:30:38,956 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2024-11-09 04:30:38,957 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:30:38,958 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 17 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:30:38,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-09 04:30:38,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-09 04:30:38,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:30:38,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2024-11-09 04:30:38,966 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 13 [2024-11-09 04:30:38,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:30:38,967 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2024-11-09 04:30:38,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:30:38,967 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2024-11-09 04:30:38,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 04:30:38,968 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:30:38,968 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:30:38,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 04:30:39,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:30:39,170 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:30:39,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:30:39,171 INFO L85 PathProgramCache]: Analyzing trace with hash -735888643, now seen corresponding path program 2 times [2024-11-09 04:30:39,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:30:39,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085020542] [2024-11-09 04:30:39,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:39,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:30:39,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:39,360 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 04:30:39,360 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:30:39,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085020542] [2024-11-09 04:30:39,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085020542] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:30:39,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499564429] [2024-11-09 04:30:39,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 04:30:39,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:30:39,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:30:39,363 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:30:39,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 04:30:39,452 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-09 04:30:39,452 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:30:39,453 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 04:30:39,455 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:39,494 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 04:30:39,494 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:30:39,589 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 04:30:39,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499564429] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:30:39,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [371764350] [2024-11-09 04:30:39,592 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 04:30:39,594 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:30:39,595 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:30:39,595 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:30:39,596 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:30:39,970 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:30:40,548 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '419#(and (<= (+ (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 0) 1) |ULTIMATE.start_main_~min~0#1|) (exists ((|v_ULTIMATE.start_main_#t~mem4#1_29| Int) (|v_ULTIMATE.start_main_~min~0#1_32| Int)) (and (<= 1 |#StackHeapBarrier|) (or (and (= |ULTIMATE.start_main_~min~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996)) (<= (+ (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996) 1) |v_ULTIMATE.start_main_~min~0#1_32|)) (and (<= |v_ULTIMATE.start_main_~min~0#1_32| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996)) (= |ULTIMATE.start_main_#t~mem4#1| |v_ULTIMATE.start_main_#t~mem4#1_29|) (= |v_ULTIMATE.start_main_~min~0#1_32| |ULTIMATE.start_main_~min~0#1|))) (<= 2 |ULTIMATE.start_main_~#a~0#1.base|))) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-09 04:30:40,548 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:30:40,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:30:40,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-09 04:30:40,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049143828] [2024-11-09 04:30:40,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:30:40,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 04:30:40,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:30:40,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 04:30:40,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2024-11-09 04:30:40,552 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:30:40,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:30:40,678 INFO L93 Difference]: Finished difference Result 68 states and 83 transitions. [2024-11-09 04:30:40,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 04:30:40,681 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-09 04:30:40,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:30:40,682 INFO L225 Difference]: With dead ends: 68 [2024-11-09 04:30:40,682 INFO L226 Difference]: Without dead ends: 51 [2024-11-09 04:30:40,683 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2024-11-09 04:30:40,684 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 24 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:30:40,686 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 24 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:30:40,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-09 04:30:40,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-09 04:30:40,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.06) internal successors, (53), 50 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:30:40,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2024-11-09 04:30:40,698 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 25 [2024-11-09 04:30:40,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:30:40,699 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2024-11-09 04:30:40,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:30:40,699 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2024-11-09 04:30:40,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-09 04:30:40,700 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:30:40,700 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:30:40,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 04:30:40,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-09 04:30:40,901 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:30:40,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:30:40,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1410735557, now seen corresponding path program 3 times [2024-11-09 04:30:40,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:30:40,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487292864] [2024-11-09 04:30:40,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:40,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:30:40,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:41,338 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-09 04:30:41,339 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:30:41,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487292864] [2024-11-09 04:30:41,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487292864] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:30:41,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636359456] [2024-11-09 04:30:41,340 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 04:30:41,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:30:41,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:30:41,342 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:30:41,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 04:30:41,440 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 04:30:41,440 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:30:41,442 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 04:30:41,444 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:41,499 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-09 04:30:41,500 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:30:41,805 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-09 04:30:41,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636359456] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:30:41,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [819141493] [2024-11-09 04:30:41,807 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 04:30:41,807 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:30:41,808 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:30:41,811 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:30:41,811 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:30:42,120 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:30:42,819 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '912#(and (exists ((|v_ULTIMATE.start_main_~min~0#1_45| Int) (|v_ULTIMATE.start_main_#t~mem4#1_42| Int)) (and (<= 1 |#StackHeapBarrier|) (or (and (= |ULTIMATE.start_main_#t~mem4#1| |v_ULTIMATE.start_main_#t~mem4#1_42|) (<= |v_ULTIMATE.start_main_~min~0#1_45| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996)) (= |v_ULTIMATE.start_main_~min~0#1_45| |ULTIMATE.start_main_~min~0#1|)) (and (<= (+ (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996) 1) |v_ULTIMATE.start_main_~min~0#1_45|) (= |ULTIMATE.start_main_~min~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996)))) (<= 2 |ULTIMATE.start_main_~#a~0#1.base|))) (<= (+ (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 0) 1) |ULTIMATE.start_main_~min~0#1|) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-09 04:30:42,821 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:30:42,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:30:42,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2024-11-09 04:30:42,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137935549] [2024-11-09 04:30:42,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:30:42,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 04:30:42,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:30:42,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 04:30:42,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=793, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 04:30:42,828 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand has 25 states, 25 states have (on average 2.24) internal successors, (56), 24 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:30:43,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:30:43,244 INFO L93 Difference]: Finished difference Result 128 states and 155 transitions. [2024-11-09 04:30:43,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 04:30:43,246 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 49 [2024-11-09 04:30:43,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:30:43,247 INFO L225 Difference]: With dead ends: 128 [2024-11-09 04:30:43,249 INFO L226 Difference]: Without dead ends: 99 [2024-11-09 04:30:43,250 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=329, Invalid=793, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 04:30:43,251 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 54 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 04:30:43,253 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 38 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 04:30:43,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-09 04:30:43,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-11-09 04:30:43,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.030612244897959) internal successors, (101), 98 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:30:43,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 101 transitions. [2024-11-09 04:30:43,274 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 101 transitions. Word has length 49 [2024-11-09 04:30:43,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:30:43,275 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 101 transitions. [2024-11-09 04:30:43,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.24) internal successors, (56), 24 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:30:43,275 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 101 transitions. [2024-11-09 04:30:43,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-09 04:30:43,280 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:30:43,281 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:30:43,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 04:30:43,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:30:43,482 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:30:43,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:30:43,483 INFO L85 PathProgramCache]: Analyzing trace with hash -2123744329, now seen corresponding path program 4 times [2024-11-09 04:30:43,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:30:43,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824786513] [2024-11-09 04:30:43,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:43,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:30:43,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:44,489 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-11-09 04:30:44,491 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:30:44,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824786513] [2024-11-09 04:30:44,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824786513] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:30:44,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474013344] [2024-11-09 04:30:44,492 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 04:30:44,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:30:44,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:30:44,494 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:30:44,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 04:30:44,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:44,655 INFO L255 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 04:30:44,659 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:44,769 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-11-09 04:30:44,770 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:30:45,778 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-11-09 04:30:45,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474013344] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:30:45,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [591923532] [2024-11-09 04:30:45,781 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 04:30:45,781 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:30:45,782 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:30:45,782 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:30:45,782 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:30:46,064 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:30:46,709 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1879#(and (<= (+ (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 0) 1) |ULTIMATE.start_main_~min~0#1|) (exists ((|v_ULTIMATE.start_main_~min~0#1_70| Int) (|v_ULTIMATE.start_main_#t~mem4#1_67| Int)) (and (<= 1 |#StackHeapBarrier|) (or (and (= |ULTIMATE.start_main_~min~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996)) (<= (+ (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996) 1) |v_ULTIMATE.start_main_~min~0#1_70|)) (and (<= |v_ULTIMATE.start_main_~min~0#1_70| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996)) (= |ULTIMATE.start_main_#t~mem4#1| |v_ULTIMATE.start_main_#t~mem4#1_67|) (= |v_ULTIMATE.start_main_~min~0#1_70| |ULTIMATE.start_main_~min~0#1|))) (<= 2 |ULTIMATE.start_main_~#a~0#1.base|))) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-09 04:30:46,709 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:30:46,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:30:46,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2024-11-09 04:30:46,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855260733] [2024-11-09 04:30:46,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:30:46,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-09 04:30:46,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:30:46,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-09 04:30:46,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1205, Invalid=2101, Unknown=0, NotChecked=0, Total=3306 [2024-11-09 04:30:46,714 INFO L87 Difference]: Start difference. First operand 99 states and 101 transitions. Second operand has 49 states, 49 states have (on average 2.122448979591837) internal successors, (104), 48 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:30:47,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:30:47,369 INFO L93 Difference]: Finished difference Result 248 states and 299 transitions. [2024-11-09 04:30:47,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-09 04:30:47,371 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.122448979591837) internal successors, (104), 48 states have internal predecessors, (104), 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 97 [2024-11-09 04:30:47,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:30:47,372 INFO L225 Difference]: With dead ends: 248 [2024-11-09 04:30:47,372 INFO L226 Difference]: Without dead ends: 195 [2024-11-09 04:30:47,374 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 722 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1205, Invalid=2101, Unknown=0, NotChecked=0, Total=3306 [2024-11-09 04:30:47,375 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 159 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 04:30:47,376 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 38 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 04:30:47,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-09 04:30:47,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2024-11-09 04:30:47,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.0154639175257731) internal successors, (197), 194 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:30:47,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 197 transitions. [2024-11-09 04:30:47,400 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 197 transitions. Word has length 97 [2024-11-09 04:30:47,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:30:47,400 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 197 transitions. [2024-11-09 04:30:47,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.122448979591837) internal successors, (104), 48 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:30:47,401 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 197 transitions. [2024-11-09 04:30:47,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-09 04:30:47,405 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:30:47,405 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:30:47,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 04:30:47,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:30:47,610 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:30:47,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:30:47,610 INFO L85 PathProgramCache]: Analyzing trace with hash -171631953, now seen corresponding path program 5 times [2024-11-09 04:30:47,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:30:47,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589207986] [2024-11-09 04:30:47,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:47,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:30:47,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:50,707 INFO L134 CoverageAnalysis]: Checked inductivity of 4232 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 2116 trivial. 0 not checked. [2024-11-09 04:30:50,708 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:30:50,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589207986] [2024-11-09 04:30:50,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589207986] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:30:50,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634038031] [2024-11-09 04:30:50,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 04:30:50,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:30:50,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:30:50,710 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:30:50,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 04:31:39,074 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2024-11-09 04:31:39,074 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:31:39,090 INFO L255 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-09 04:31:39,097 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:31:39,317 INFO L134 CoverageAnalysis]: Checked inductivity of 4232 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 2116 trivial. 0 not checked. [2024-11-09 04:31:39,317 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:31:43,544 INFO L134 CoverageAnalysis]: Checked inductivity of 4232 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 2116 trivial. 0 not checked. [2024-11-09 04:31:43,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634038031] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:31:43,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1388346360] [2024-11-09 04:31:43,547 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 04:31:43,547 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:31:43,547 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:31:43,547 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:31:43,548 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:31:43,855 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:31:44,761 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3794#(and (<= (+ (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 0) 1) |ULTIMATE.start_main_~min~0#1|) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (exists ((|v_ULTIMATE.start_main_~min~0#1_119| Int) (|v_ULTIMATE.start_main_#t~mem4#1_116| Int)) (and (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#a~0#1.base|) (or (and (<= |v_ULTIMATE.start_main_~min~0#1_119| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996)) (= |ULTIMATE.start_main_#t~mem4#1| |v_ULTIMATE.start_main_#t~mem4#1_116|) (= |v_ULTIMATE.start_main_~min~0#1_119| |ULTIMATE.start_main_~min~0#1|)) (and (= |ULTIMATE.start_main_~min~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996)) (<= (+ (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996) 1) |v_ULTIMATE.start_main_~min~0#1_119|))))))' at error location [2024-11-09 04:31:44,762 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:31:44,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:31:44,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 49, 49] total 97 [2024-11-09 04:31:44,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472586213] [2024-11-09 04:31:44,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:31:44,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-11-09 04:31:44,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:31:44,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-11-09 04:31:44,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4685, Invalid=6445, Unknown=0, NotChecked=0, Total=11130 [2024-11-09 04:31:44,772 INFO L87 Difference]: Start difference. First operand 195 states and 197 transitions. Second operand has 97 states, 97 states have (on average 3.0412371134020617) internal successors, (295), 97 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:31:46,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:31:46,412 INFO L93 Difference]: Finished difference Result 488 states and 587 transitions. [2024-11-09 04:31:46,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-09 04:31:46,414 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 3.0412371134020617) internal successors, (295), 97 states have internal predecessors, (295), 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 193 [2024-11-09 04:31:46,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:31:46,417 INFO L225 Difference]: With dead ends: 488 [2024-11-09 04:31:46,417 INFO L226 Difference]: Without dead ends: 387 [2024-11-09 04:31:46,421 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 625 GetRequests, 521 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1466 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=4685, Invalid=6445, Unknown=0, NotChecked=0, Total=11130 [2024-11-09 04:31:46,422 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 161 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 04:31:46,423 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 38 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 04:31:46,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2024-11-09 04:31:46,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2024-11-09 04:31:46,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 1.0077720207253886) internal successors, (389), 386 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:31:46,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 389 transitions. [2024-11-09 04:31:46,469 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 389 transitions. Word has length 193 [2024-11-09 04:31:46,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:31:46,470 INFO L471 AbstractCegarLoop]: Abstraction has 387 states and 389 transitions. [2024-11-09 04:31:46,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 3.0412371134020617) internal successors, (295), 97 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:31:46,470 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 389 transitions. [2024-11-09 04:31:46,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2024-11-09 04:31:46,480 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:31:46,480 INFO L215 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:31:46,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 04:31:46,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:31:46,681 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:31:46,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:31:46,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1437366113, now seen corresponding path program 6 times [2024-11-09 04:31:46,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:31:46,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742638367] [2024-11-09 04:31:46,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:46,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:31:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:58,386 INFO L134 CoverageAnalysis]: Checked inductivity of 17672 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 8836 trivial. 0 not checked. [2024-11-09 04:31:58,387 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:31:58,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742638367] [2024-11-09 04:31:58,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742638367] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:31:58,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365312941] [2024-11-09 04:31:58,388 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 04:31:58,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:31:58,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:31:58,390 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:31:58,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 04:31:58,900 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 04:31:58,901 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:31:58,909 INFO L255 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-09 04:31:58,921 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:31:59,325 INFO L134 CoverageAnalysis]: Checked inductivity of 17672 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 8836 trivial. 0 not checked. [2024-11-09 04:31:59,325 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:32:12,647 INFO L134 CoverageAnalysis]: Checked inductivity of 17672 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 8836 trivial. 0 not checked. [2024-11-09 04:32:12,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365312941] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:32:12,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [604136923] [2024-11-09 04:32:12,650 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 04:32:12,650 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:32:12,650 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:32:12,651 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:32:12,651 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:32:12,904 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:32:14,294 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7605#(and (<= (+ (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 0) 1) |ULTIMATE.start_main_~min~0#1|) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (exists ((|v_ULTIMATE.start_main_#t~mem4#1_213| Int) (|v_ULTIMATE.start_main_~min~0#1_216| Int)) (and (<= 1 |#StackHeapBarrier|) (or (and (<= (+ (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996) 1) |v_ULTIMATE.start_main_~min~0#1_216|) (= |ULTIMATE.start_main_~min~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996))) (and (<= |v_ULTIMATE.start_main_~min~0#1_216| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996)) (= |ULTIMATE.start_main_#t~mem4#1| |v_ULTIMATE.start_main_#t~mem4#1_213|) (= |v_ULTIMATE.start_main_~min~0#1_216| |ULTIMATE.start_main_~min~0#1|))) (<= 2 |ULTIMATE.start_main_~#a~0#1.base|))))' at error location [2024-11-09 04:32:14,294 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:32:14,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:32:14,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 192 [2024-11-09 04:32:14,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937391642] [2024-11-09 04:32:14,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:32:14,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2024-11-09 04:32:14,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:32:14,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2024-11-09 04:32:14,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18557, Invalid=22045, Unknown=0, NotChecked=0, Total=40602 [2024-11-09 04:32:14,315 INFO L87 Difference]: Start difference. First operand 387 states and 389 transitions. Second operand has 193 states, 193 states have (on average 2.0310880829015545) internal successors, (392), 192 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:32:27,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:32:27,980 INFO L93 Difference]: Finished difference Result 968 states and 1163 transitions. [2024-11-09 04:32:27,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2024-11-09 04:32:27,981 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 2.0310880829015545) internal successors, (392), 192 states have internal predecessors, (392), 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 385 [2024-11-09 04:32:27,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:32:27,986 INFO L225 Difference]: With dead ends: 968 [2024-11-09 04:32:27,986 INFO L226 Difference]: Without dead ends: 771 [2024-11-09 04:32:27,995 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1249 GetRequests, 1049 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2954 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=18557, Invalid=22045, Unknown=0, NotChecked=0, Total=40602 [2024-11-09 04:32:27,996 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 782 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 879 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 1658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 879 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-09 04:32:27,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [782 Valid, 52 Invalid, 1658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [879 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-09 04:32:27,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2024-11-09 04:32:28,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 771. [2024-11-09 04:32:28,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 770 states have (on average 1.0038961038961038) internal successors, (773), 770 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:32:28,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 773 transitions. [2024-11-09 04:32:28,066 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 773 transitions. Word has length 385 [2024-11-09 04:32:28,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:32:28,069 INFO L471 AbstractCegarLoop]: Abstraction has 771 states and 773 transitions. [2024-11-09 04:32:28,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 2.0310880829015545) internal successors, (392), 192 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:32:28,071 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 773 transitions. [2024-11-09 04:32:28,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 770 [2024-11-09 04:32:28,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:32:28,112 INFO L215 NwaCegarLoop]: trace histogram [190, 190, 190, 190, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:32:28,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 04:32:28,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-09 04:32:28,313 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:32:28,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:32:28,314 INFO L85 PathProgramCache]: Analyzing trace with hash 374547583, now seen corresponding path program 7 times [2024-11-09 04:32:28,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:32:28,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404533154] [2024-11-09 04:32:28,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:32:28,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:32:29,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:33:05,979 INFO L134 CoverageAnalysis]: Checked inductivity of 72200 backedges. 0 proven. 36100 refuted. 0 times theorem prover too weak. 36100 trivial. 0 not checked. [2024-11-09 04:33:05,979 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:33:05,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404533154] [2024-11-09 04:33:05,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404533154] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:33:05,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101967521] [2024-11-09 04:33:05,980 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 04:33:05,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:33:05,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:33:05,982 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:33:05,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 04:33:06,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:33:06,748 INFO L255 TraceCheckSpWp]: Trace formula consists of 2900 conjuncts, 192 conjuncts are in the unsatisfiable core [2024-11-09 04:33:06,759 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:33:07,378 INFO L134 CoverageAnalysis]: Checked inductivity of 72200 backedges. 0 proven. 36100 refuted. 0 times theorem prover too weak. 36100 trivial. 0 not checked. [2024-11-09 04:33:07,378 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:33:54,658 INFO L134 CoverageAnalysis]: Checked inductivity of 72200 backedges. 0 proven. 36100 refuted. 0 times theorem prover too weak. 36100 trivial. 0 not checked. [2024-11-09 04:33:54,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101967521] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:33:54,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [432541153] [2024-11-09 04:33:54,661 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 04:33:54,661 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:33:54,661 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:33:54,661 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:33:54,661 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:33:54,833 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:33:56,888 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '15208#(and (exists ((|v_ULTIMATE.start_main_#t~mem4#1_406| Int) (|v_ULTIMATE.start_main_~min~0#1_409| Int)) (and (<= 1 |#StackHeapBarrier|) (or (and (<= (+ (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996) 1) |v_ULTIMATE.start_main_~min~0#1_409|) (= |ULTIMATE.start_main_~min~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996))) (and (<= |v_ULTIMATE.start_main_~min~0#1_409| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996)) (= |ULTIMATE.start_main_#t~mem4#1| |v_ULTIMATE.start_main_#t~mem4#1_406|) (= |v_ULTIMATE.start_main_~min~0#1_409| |ULTIMATE.start_main_~min~0#1|))) (<= 2 |ULTIMATE.start_main_~#a~0#1.base|))) (<= (+ (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 0) 1) |ULTIMATE.start_main_~min~0#1|) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-09 04:33:56,888 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:33:56,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:33:56,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 384 [2024-11-09 04:33:56,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438131485] [2024-11-09 04:33:56,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:33:56,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 385 states [2024-11-09 04:33:56,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:33:56,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 385 interpolants. [2024-11-09 04:33:56,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73949, Invalid=80893, Unknown=0, NotChecked=0, Total=154842 [2024-11-09 04:33:56,923 INFO L87 Difference]: Start difference. First operand 771 states and 773 transitions. Second operand has 385 states, 385 states have (on average 2.0155844155844154) internal successors, (776), 384 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:36:47,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:36:47,880 INFO L93 Difference]: Finished difference Result 1928 states and 2315 transitions. [2024-11-09 04:36:47,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2024-11-09 04:36:47,881 INFO L78 Accepts]: Start accepts. Automaton has has 385 states, 385 states have (on average 2.0155844155844154) internal successors, (776), 384 states have internal predecessors, (776), 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 769 [2024-11-09 04:36:47,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:36:47,888 INFO L225 Difference]: With dead ends: 1928 [2024-11-09 04:36:47,889 INFO L226 Difference]: Without dead ends: 1539 [2024-11-09 04:36:47,898 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2497 GetRequests, 2105 SyntacticMatches, 0 SemanticMatches, 392 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5930 ImplicationChecksByTransitivity, 64.8s TimeCoverageRelationStatistics Valid=73949, Invalid=80893, Unknown=0, NotChecked=0, Total=154842 [2024-11-09 04:36:47,899 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 2437 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1543 mSolverCounterSat, 2630 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2437 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 4173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2630 IncrementalHoareTripleChecker+Valid, 1543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-09 04:36:47,899 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2437 Valid, 52 Invalid, 4173 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2630 Valid, 1543 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-09 04:36:47,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1539 states. [2024-11-09 04:36:47,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1539 to 1539. [2024-11-09 04:36:47,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1539 states, 1538 states have (on average 1.0019505851755526) internal successors, (1541), 1538 states have internal predecessors, (1541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:36:47,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1539 states to 1539 states and 1541 transitions. [2024-11-09 04:36:47,953 INFO L78 Accepts]: Start accepts. Automaton has 1539 states and 1541 transitions. Word has length 769 [2024-11-09 04:36:47,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:36:47,954 INFO L471 AbstractCegarLoop]: Abstraction has 1539 states and 1541 transitions. [2024-11-09 04:36:47,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 385 states, 385 states have (on average 2.0155844155844154) internal successors, (776), 384 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:36:47,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1539 states and 1541 transitions. [2024-11-09 04:36:48,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1538 [2024-11-09 04:36:48,023 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:36:48,023 INFO L215 NwaCegarLoop]: trace histogram [382, 382, 382, 382, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:36:48,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 04:36:48,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-09 04:36:48,224 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:36:48,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:36:48,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1780655041, now seen corresponding path program 8 times [2024-11-09 04:36:48,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:36:48,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869831422] [2024-11-09 04:36:48,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:36:48,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:36:50,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:39:49,100 INFO L134 CoverageAnalysis]: Checked inductivity of 291848 backedges. 0 proven. 145924 refuted. 0 times theorem prover too weak. 145924 trivial. 0 not checked. [2024-11-09 04:39:49,100 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:39:49,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869831422] [2024-11-09 04:39:49,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869831422] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:39:49,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696907191] [2024-11-09 04:39:49,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 04:39:49,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:39:49,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:39:49,102 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:39:49,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242b390-a3a9-4c3e-83e6-9bca0d9fee34/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process