./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-data/min_max.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/heap-data/min_max.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6f3dc8ca7e9d6160ebf6e1f17d4641cf9f9e9c7a0130658f0fd8bbb7edc9643d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 23:45:01,781 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 23:45:01,859 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-13 23:45:01,865 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 23:45:01,865 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 23:45:01,888 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 23:45:01,889 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 23:45:01,889 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 23:45:01,890 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 23:45:01,890 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 23:45:01,890 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-13 23:45:01,890 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-13 23:45:01,890 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-13 23:45:01,890 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-13 23:45:01,891 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-13 23:45:01,891 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-13 23:45:01,891 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-13 23:45:01,891 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-13 23:45:01,891 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-13 23:45:01,891 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-13 23:45:01,891 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-13 23:45:01,891 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-13 23:45:01,892 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 23:45:01,892 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 23:45:01,892 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 23:45:01,892 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 23:45:01,892 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 23:45:01,892 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 23:45:01,892 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 23:45:01,892 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 23:45:01,893 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 23:45:01,893 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 23:45:01,893 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 23:45:01,893 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 23:45:01,893 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 23:45:01,893 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 23:45:01,894 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 23:45:01,894 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 23:45:01,895 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:45:01,895 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 23:45:01,895 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 23:45:01,895 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 23:45:01,895 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-13 23:45:01,895 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 23:45:01,896 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 23:45:01,896 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-13 23:45:01,896 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 23:45:01,896 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f3dc8ca7e9d6160ebf6e1f17d4641cf9f9e9c7a0130658f0fd8bbb7edc9643d [2024-11-13 23:45:02,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 23:45:02,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 23:45:02,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 23:45:02,223 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 23:45:02,224 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 23:45:02,225 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/heap-data/min_max.i Unable to find full path for "g++" [2024-11-13 23:45:04,200 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 23:45:04,469 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 23:45:04,469 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/sv-benchmarks/c/heap-data/min_max.i [2024-11-13 23:45:04,486 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/data/87cbae674/4864be5bdbcc475e844aa6ef27bd9c1e/FLAGff260a543 [2024-11-13 23:45:04,502 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/data/87cbae674/4864be5bdbcc475e844aa6ef27bd9c1e [2024-11-13 23:45:04,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 23:45:04,506 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 23:45:04,507 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 23:45:04,508 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 23:45:04,512 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 23:45:04,513 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:45:04" (1/1) ... [2024-11-13 23:45:04,514 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28c2c37d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:45:04, skipping insertion in model container [2024-11-13 23:45:04,514 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:45:04" (1/1) ... [2024-11-13 23:45:04,551 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 23:45:04,867 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_46457f06-5901-43f3-a025-f8fc8f5ee1cc/sv-benchmarks/c/heap-data/min_max.i[23535,23548] [2024-11-13 23:45:04,870 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_46457f06-5901-43f3-a025-f8fc8f5ee1cc/sv-benchmarks/c/heap-data/min_max.i[23590,23603] [2024-11-13 23:45:04,872 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:45:04,881 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 23:45:04,938 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_46457f06-5901-43f3-a025-f8fc8f5ee1cc/sv-benchmarks/c/heap-data/min_max.i[23535,23548] [2024-11-13 23:45:04,939 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_46457f06-5901-43f3-a025-f8fc8f5ee1cc/sv-benchmarks/c/heap-data/min_max.i[23590,23603] [2024-11-13 23:45:04,943 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:45:04,976 INFO L204 MainTranslator]: Completed translation [2024-11-13 23:45:04,976 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:45:04 WrapperNode [2024-11-13 23:45:04,977 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 23:45:04,978 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 23:45:04,978 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 23:45:04,978 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 23:45:04,990 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:45:04" (1/1) ... [2024-11-13 23:45:05,004 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:45:04" (1/1) ... [2024-11-13 23:45:05,024 INFO L138 Inliner]: procedures = 121, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 59 [2024-11-13 23:45:05,025 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 23:45:05,025 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 23:45:05,025 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 23:45:05,025 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 23:45:05,031 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:45:04" (1/1) ... [2024-11-13 23:45:05,031 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:45:04" (1/1) ... [2024-11-13 23:45:05,033 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:45:04" (1/1) ... [2024-11-13 23:45:05,033 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:45:04" (1/1) ... [2024-11-13 23:45:05,041 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:45:04" (1/1) ... [2024-11-13 23:45:05,047 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:45:04" (1/1) ... [2024-11-13 23:45:05,048 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:45:04" (1/1) ... [2024-11-13 23:45:05,049 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:45:04" (1/1) ... [2024-11-13 23:45:05,051 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 23:45:05,052 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 23:45:05,052 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 23:45:05,052 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 23:45:05,053 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:45:04" (1/1) ... [2024-11-13 23:45:05,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:45:05,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:45:05,085 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-13 23:45:05,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-13 23:45:05,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-13 23:45:05,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-13 23:45:05,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 23:45:05,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 23:45:05,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-13 23:45:05,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-13 23:45:05,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-13 23:45:05,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 23:45:05,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 23:45:05,218 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 23:45:05,220 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 23:45:05,360 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-13 23:45:05,360 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 23:45:05,442 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 23:45:05,443 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 23:45:05,443 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:45:05 BoogieIcfgContainer [2024-11-13 23:45:05,443 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 23:45:05,446 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 23:45:05,447 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 23:45:05,452 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 23:45:05,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 11:45:04" (1/3) ... [2024-11-13 23:45:05,453 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43465a41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:45:05, skipping insertion in model container [2024-11-13 23:45:05,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:45:04" (2/3) ... [2024-11-13 23:45:05,453 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43465a41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:45:05, skipping insertion in model container [2024-11-13 23:45:05,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:45:05" (3/3) ... [2024-11-13 23:45:05,454 INFO L112 eAbstractionObserver]: Analyzing ICFG min_max.i [2024-11-13 23:45:05,476 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 23:45:05,478 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG min_max.i that has 1 procedures, 14 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-13 23:45:05,539 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 23:45:05,553 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;@63218161, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 23:45:05,554 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-13 23:45:05,557 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:45:05,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-13 23:45:05,563 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:45:05,564 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 23:45:05,565 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:45:05,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:45:05,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1635249560, now seen corresponding path program 1 times [2024-11-13 23:45:05,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:45:05,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643030994] [2024-11-13 23:45:05,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:45:05,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:45:05,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:45:05,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:45:05,728 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:45:05,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643030994] [2024-11-13 23:45:05,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643030994] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:45:05,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:45:05,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 23:45:05,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723010637] [2024-11-13 23:45:05,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:45:05,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 23:45:05,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:45:05,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 23:45:05,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 23:45:05,766 INFO L87 Difference]: Start difference. First operand has 14 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2024-11-13 23:45:05,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:45:05,805 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2024-11-13 23:45:05,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 23:45:05,808 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2024-11-13 23:45:05,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:45:05,816 INFO L225 Difference]: With dead ends: 25 [2024-11-13 23:45:05,817 INFO L226 Difference]: Without dead ends: 13 [2024-11-13 23:45:05,821 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 23:45:05,826 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 23:45:05,827 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 23:45:05,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-11-13 23:45:05,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-11-13 23:45:05,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 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) [2024-11-13 23:45:05,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2024-11-13 23:45:05,859 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 6 [2024-11-13 23:45:05,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:45:05,860 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2024-11-13 23:45:05,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2024-11-13 23:45:05,860 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2024-11-13 23:45:05,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-13 23:45:05,861 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:45:05,861 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:45:05,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 23:45:05,862 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:45:05,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:45:05,864 INFO L85 PathProgramCache]: Analyzing trace with hash 226947400, now seen corresponding path program 1 times [2024-11-13 23:45:05,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:45:05,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765735105] [2024-11-13 23:45:05,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:45:05,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:45:05,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:45:06,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:45:06,132 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:45:06,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765735105] [2024-11-13 23:45:06,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765735105] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:45:06,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:45:06,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 23:45:06,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331566455] [2024-11-13 23:45:06,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:45:06,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:45:06,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:45:06,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:45:06,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:45:06,134 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2024-11-13 23:45:06,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:45:06,178 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2024-11-13 23:45:06,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 23:45:06,180 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2024-11-13 23:45:06,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:45:06,180 INFO L225 Difference]: With dead ends: 26 [2024-11-13 23:45:06,181 INFO L226 Difference]: Without dead ends: 15 [2024-11-13 23:45:06,181 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:45:06,182 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 23:45:06,183 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 23:45:06,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-13 23:45:06,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-13 23:45:06,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 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) [2024-11-13 23:45:06,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2024-11-13 23:45:06,187 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 7 [2024-11-13 23:45:06,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:45:06,187 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2024-11-13 23:45:06,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2024-11-13 23:45:06,187 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2024-11-13 23:45:06,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 23:45:06,188 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:45:06,188 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:45:06,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 23:45:06,188 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:45:06,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:45:06,191 INFO L85 PathProgramCache]: Analyzing trace with hash -808430394, now seen corresponding path program 1 times [2024-11-13 23:45:06,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:45:06,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985432913] [2024-11-13 23:45:06,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:45:06,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:45:06,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:45:06,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:45:06,733 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:45:06,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985432913] [2024-11-13 23:45:06,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985432913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:45:06,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:45:06,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 23:45:06,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597377325] [2024-11-13 23:45:06,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:45:06,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 23:45:06,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:45:06,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 23:45:06,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 23:45:06,734 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 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) [2024-11-13 23:45:06,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:45:06,806 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2024-11-13 23:45:06,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 23:45:06,806 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 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 [2024-11-13 23:45:06,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:45:06,807 INFO L225 Difference]: With dead ends: 24 [2024-11-13 23:45:06,807 INFO L226 Difference]: Without dead ends: 22 [2024-11-13 23:45:06,807 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 23:45:06,808 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 23:45:06,808 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 27 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 23:45:06,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-13 23:45:06,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 17. [2024-11-13 23:45:06,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:45:06,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2024-11-13 23:45:06,812 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2024-11-13 23:45:06,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:45:06,812 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2024-11-13 23:45:06,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 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) [2024-11-13 23:45:06,813 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2024-11-13 23:45:06,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 23:45:06,813 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:45:06,813 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:45:06,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 23:45:06,813 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:45:06,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:45:06,814 INFO L85 PathProgramCache]: Analyzing trace with hash 487597480, now seen corresponding path program 1 times [2024-11-13 23:45:06,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:45:06,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142425498] [2024-11-13 23:45:06,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:45:06,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:45:06,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:45:07,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:45:07,229 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:45:07,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142425498] [2024-11-13 23:45:07,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142425498] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:45:07,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:45:07,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 23:45:07,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124222153] [2024-11-13 23:45:07,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:45:07,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 23:45:07,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:45:07,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 23:45:07,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 23:45:07,231 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:45:07,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:45:07,377 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2024-11-13 23:45:07,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 23:45:07,379 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-13 23:45:07,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:45:07,380 INFO L225 Difference]: With dead ends: 22 [2024-11-13 23:45:07,380 INFO L226 Difference]: Without dead ends: 20 [2024-11-13 23:45:07,380 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-13 23:45:07,381 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 23:45:07,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 36 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 23:45:07,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-13 23:45:07,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2024-11-13 23:45:07,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 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) [2024-11-13 23:45:07,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2024-11-13 23:45:07,387 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 11 [2024-11-13 23:45:07,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:45:07,388 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2024-11-13 23:45:07,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:45:07,388 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2024-11-13 23:45:07,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-13 23:45:07,391 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:45:07,391 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:45:07,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 23:45:07,391 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:45:07,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:45:07,392 INFO L85 PathProgramCache]: Analyzing trace with hash 441011485, now seen corresponding path program 1 times [2024-11-13 23:45:07,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:45:07,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851845935] [2024-11-13 23:45:07,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:45:07,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:45:07,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:45:07,724 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:45:07,724 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:45:07,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851845935] [2024-11-13 23:45:07,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851845935] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:45:07,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808015235] [2024-11-13 23:45:07,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:45:07,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:45:07,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:45:07,728 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:45:07,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 23:45:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:45:07,842 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-13 23:45:07,846 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:45:07,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:45:07,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:45:08,044 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:45:08,044 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:45:08,154 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:45:08,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808015235] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:45:08,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [922869089] [2024-11-13 23:45:08,173 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-13 23:45:08,173 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:45:08,176 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-13 23:45:08,180 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-13 23:45:08,180 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-13 23:45:08,492 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-13 23:45:08,640 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '319#(<= 1 |#StackHeapBarrier|)' at error location [2024-11-13 23:45:08,640 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-13 23:45:08,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 23:45:08,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-13 23:45:08,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556313225] [2024-11-13 23:45:08,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 23:45:08,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 23:45:08,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:45:08,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 23:45:08,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-11-13 23:45:08,642 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 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) [2024-11-13 23:45:08,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:45:08,709 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2024-11-13 23:45:08,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 23:45:08,709 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-13 23:45:08,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:45:08,710 INFO L225 Difference]: With dead ends: 37 [2024-11-13 23:45:08,710 INFO L226 Difference]: Without dead ends: 21 [2024-11-13 23:45:08,710 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-11-13 23:45:08,711 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 23:45:08,712 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 23:45:08,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-13 23:45:08,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-13 23:45:08,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 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) [2024-11-13 23:45:08,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2024-11-13 23:45:08,718 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 14 [2024-11-13 23:45:08,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:45:08,718 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2024-11-13 23:45:08,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 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) [2024-11-13 23:45:08,719 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2024-11-13 23:45:08,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-13 23:45:08,719 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:45:08,719 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:45:08,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-13 23:45:08,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:45:08,923 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:45:08,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:45:08,927 INFO L85 PathProgramCache]: Analyzing trace with hash 420388831, now seen corresponding path program 2 times [2024-11-13 23:45:08,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:45:08,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602316633] [2024-11-13 23:45:08,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:45:08,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:45:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:45:09,736 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:45:09,736 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:45:09,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602316633] [2024-11-13 23:45:09,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602316633] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:45:09,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657135479] [2024-11-13 23:45:09,737 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 23:45:09,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:45:09,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:45:09,739 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:45:09,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 23:45:09,838 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-13 23:45:09,838 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 23:45:09,842 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-13 23:45:09,845 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:45:09,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 23:45:10,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:45:10,073 INFO L349 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2024-11-13 23:45:10,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 31 [2024-11-13 23:45:10,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 23:45:10,235 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-11-13 23:45:10,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2024-11-13 23:45:10,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 49 [2024-11-13 23:45:10,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-13 23:45:10,991 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:45:10,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 55 [2024-11-13 23:45:11,076 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:45:11,077 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:45:11,751 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2024-11-13 23:45:11,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 155 treesize of output 1 [2024-11-13 23:45:11,752 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:45:11,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657135479] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:45:11,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1145447043] [2024-11-13 23:45:11,754 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-13 23:45:11,755 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:45:11,756 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-13 23:45:11,756 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-13 23:45:11,757 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-13 23:45:11,925 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-13 23:45:12,159 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '506#(<= 1 |#StackHeapBarrier|)' at error location [2024-11-13 23:45:12,159 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-13 23:45:12,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 23:45:12,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 9] total 20 [2024-11-13 23:45:12,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598514670] [2024-11-13 23:45:12,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 23:45:12,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 23:45:12,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:45:12,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 23:45:12,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=566, Unknown=0, NotChecked=0, Total=650 [2024-11-13 23:45:12,162 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 20 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 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) [2024-11-13 23:45:12,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:45:12,669 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2024-11-13 23:45:12,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 23:45:12,670 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 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 16 [2024-11-13 23:45:12,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:45:12,671 INFO L225 Difference]: With dead ends: 46 [2024-11-13 23:45:12,671 INFO L226 Difference]: Without dead ends: 44 [2024-11-13 23:45:12,672 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=116, Invalid=754, Unknown=0, NotChecked=0, Total=870 [2024-11-13 23:45:12,674 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 19 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 23:45:12,675 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 95 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 23:45:12,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-13 23:45:12,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 24. [2024-11-13 23:45:12,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:45:12,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2024-11-13 23:45:12,685 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 16 [2024-11-13 23:45:12,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:45:12,686 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2024-11-13 23:45:12,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 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) [2024-11-13 23:45:12,687 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2024-11-13 23:45:12,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-13 23:45:12,687 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:45:12,687 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:45:12,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 23:45:12,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-13 23:45:12,889 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:45:12,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:45:12,889 INFO L85 PathProgramCache]: Analyzing trace with hash 266866305, now seen corresponding path program 1 times [2024-11-13 23:45:12,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:45:12,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386939190] [2024-11-13 23:45:12,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:45:12,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:45:12,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:45:13,427 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:45:13,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:45:13,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386939190] [2024-11-13 23:45:13,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386939190] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:45:13,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288256277] [2024-11-13 23:45:13,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:45:13,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:45:13,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:45:13,430 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:45:13,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 23:45:13,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:45:13,532 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-13 23:45:13,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:45:13,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 23:45:13,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-13 23:45:13,592 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-11-13 23:45:13,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2024-11-13 23:45:13,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:45:13,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-13 23:45:13,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 23:45:13,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-13 23:45:13,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-13 23:45:13,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-13 23:45:13,974 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:45:13,974 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:45:14,388 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:45:14,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288256277] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:45:14,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [937316835] [2024-11-13 23:45:14,391 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-13 23:45:14,391 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:45:14,392 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-13 23:45:14,392 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-13 23:45:14,392 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-13 23:45:14,512 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-13 23:45:14,739 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '726#(and (<= 1 |#StackHeapBarrier|) (<= (+ |ULTIMATE.start_main_~max~0#1| 1) (select (select |#memory_int| |ULTIMATE.start_main_~i~0#1.base|) (+ |ULTIMATE.start_main_~i~0#1.offset| 4))))' at error location [2024-11-13 23:45:14,740 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-13 23:45:14,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 23:45:14,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 18 [2024-11-13 23:45:14,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7008130] [2024-11-13 23:45:14,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 23:45:14,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 23:45:14,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:45:14,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 23:45:14,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2024-11-13 23:45:14,743 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 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) [2024-11-13 23:45:15,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:45:15,092 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2024-11-13 23:45:15,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 23:45:15,093 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 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 18 [2024-11-13 23:45:15,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:45:15,093 INFO L225 Difference]: With dead ends: 29 [2024-11-13 23:45:15,093 INFO L226 Difference]: Without dead ends: 27 [2024-11-13 23:45:15,094 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=129, Invalid=741, Unknown=0, NotChecked=0, Total=870 [2024-11-13 23:45:15,094 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 23:45:15,095 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 84 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 23:45:15,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-13 23:45:15,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2024-11-13 23:45:15,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 24 states have (on average 1.125) internal successors, (27), 25 states have internal predecessors, (27), 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) [2024-11-13 23:45:15,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2024-11-13 23:45:15,100 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 18 [2024-11-13 23:45:15,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:45:15,100 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2024-11-13 23:45:15,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 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) [2024-11-13 23:45:15,101 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2024-11-13 23:45:15,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-13 23:45:15,101 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:45:15,101 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-13 23:45:15,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 23:45:15,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:45:15,306 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:45:15,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:45:15,306 INFO L85 PathProgramCache]: Analyzing trace with hash 233507236, now seen corresponding path program 3 times [2024-11-13 23:45:15,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:45:15,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830060707] [2024-11-13 23:45:15,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:45:15,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:45:15,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:45:15,751 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:45:15,752 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:45:15,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830060707] [2024-11-13 23:45:15,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830060707] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:45:15,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131135591] [2024-11-13 23:45:15,752 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 23:45:15,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:45:15,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:45:15,755 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:45:15,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 23:45:15,855 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 23:45:15,855 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 23:45:15,857 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-13 23:45:15,860 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:45:15,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 23:45:15,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:45:15,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:45:15,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2024-11-13 23:45:15,930 INFO L349 Elim1Store]: treesize reduction 22, result has 43.6 percent of original size [2024-11-13 23:45:15,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 31 [2024-11-13 23:45:15,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-13 23:45:15,956 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-11-13 23:45:15,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2024-11-13 23:45:15,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-13 23:45:16,277 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:45:16,278 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:45:16,435 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:45:16,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 31 [2024-11-13 23:45:16,443 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:45:16,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 28 [2024-11-13 23:45:16,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2024-11-13 23:45:16,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2024-11-13 23:45:16,592 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:45:16,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2024-11-13 23:45:16,595 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:45:16,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2024-11-13 23:45:16,608 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:45:16,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2024-11-13 23:45:16,611 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:45:16,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-13 23:45:16,622 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:45:16,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131135591] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:45:16,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2004185848] [2024-11-13 23:45:16,624 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-13 23:45:16,624 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:45:16,625 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-13 23:45:16,625 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-13 23:45:16,625 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-13 23:45:16,736 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-13 23:45:16,907 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '946#(<= 1 |#StackHeapBarrier|)' at error location [2024-11-13 23:45:16,907 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-13 23:45:16,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 23:45:16,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-13 23:45:16,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435856544] [2024-11-13 23:45:16,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 23:45:16,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 23:45:16,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:45:16,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 23:45:16,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2024-11-13 23:45:16,909 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 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) [2024-11-13 23:45:17,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:45:17,008 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2024-11-13 23:45:17,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 23:45:17,009 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 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 21 [2024-11-13 23:45:17,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:45:17,010 INFO L225 Difference]: With dead ends: 49 [2024-11-13 23:45:17,010 INFO L226 Difference]: Without dead ends: 28 [2024-11-13 23:45:17,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2024-11-13 23:45:17,011 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 23:45:17,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 79 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 23:45:17,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-13 23:45:17,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-11-13 23:45:17,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 27 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) [2024-11-13 23:45:17,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2024-11-13 23:45:17,020 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 21 [2024-11-13 23:45:17,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:45:17,022 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2024-11-13 23:45:17,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 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) [2024-11-13 23:45:17,023 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2024-11-13 23:45:17,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-13 23:45:17,023 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:45:17,023 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-13 23:45:17,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 23:45:17,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:45:17,224 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:45:17,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:45:17,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1333167966, now seen corresponding path program 4 times [2024-11-13 23:45:17,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:45:17,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720291177] [2024-11-13 23:45:17,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:45:17,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:45:17,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:45:18,818 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:45:18,819 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:45:18,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720291177] [2024-11-13 23:45:18,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720291177] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:45:18,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428616631] [2024-11-13 23:45:18,819 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 23:45:18,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:45:18,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:45:18,822 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:45:18,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 23:45:18,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:45:18,940 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-13 23:45:18,944 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:45:19,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-13 23:45:19,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 23:45:19,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 23:45:19,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:45:19,116 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-13 23:45:19,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 33 [2024-11-13 23:45:19,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2024-11-13 23:45:19,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-13 23:45:19,219 INFO L349 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2024-11-13 23:45:19,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2024-11-13 23:45:19,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:45:19,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 82 [2024-11-13 23:45:19,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:45:19,435 INFO L349 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2024-11-13 23:45:19,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2024-11-13 23:45:19,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:45:19,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2024-11-13 23:45:19,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-13 23:45:19,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:45:19,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 52 [2024-11-13 23:45:19,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2024-11-13 23:45:22,466 INFO L349 Elim1Store]: treesize reduction 32, result has 88.9 percent of original size [2024-11-13 23:45:22,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 13 new quantified variables, introduced 36 case distinctions, treesize of input 373 treesize of output 501 [2024-11-13 23:45:22,954 INFO L349 Elim1Store]: treesize reduction 32, result has 88.9 percent of original size [2024-11-13 23:45:22,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 237 treesize of output 457 [2024-11-13 23:49:43,503 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-13 23:49:43,503 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2024-11-13 23:49:43,503 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2024-11-13 23:49:43,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [139471203] [2024-11-13 23:49:43,505 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-13 23:49:43,505 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:49:43,506 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-13 23:49:43,506 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-13 23:49:43,506 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-13 23:49:43,510 FATAL L? ?]: Ignoring exception! de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:177) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:132) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.checkSatTerm(SmtUtils.java:326) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.isFalse(SymbolicTools.java:220) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.RelationCheckUtil.isEqBottom_SolverAlphaSolver(RelationCheckUtil.java:56) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.ExplicitValueDomain.isEqBottom(ExplicitValueDomain.java:73) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.CompoundDomain.isEqBottom(CompoundDomain.java:84) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.StatsWrapperDomain.isEqBottom(StatsWrapperDomain.java:69) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.earlyExitAfterStep(DagInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:276) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:447) at java.base/java.io.OutputStream.write(OutputStream.java:167) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:125) at java.base/java.io.BufferedOutputStream.implFlush(BufferedOutputStream.java:252) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:246) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:412) at java.base/sun.nio.cs.StreamEncoder.lockedFlush(StreamEncoder.java:214) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:201) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:262) at java.base/java.io.BufferedWriter.implFlush(BufferedWriter.java:372) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:359) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 44 more [2024-11-13 23:49:43,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:49:43,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2024-11-13 23:49:43,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109217605] [2024-11-13 23:49:43,515 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 23:49:43,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 23:49:43,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:49:43,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 23:49:43,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2024-11-13 23:49:43,516 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 13 states have internal predecessors, (23), 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) [2024-11-13 23:49:43,517 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2024-11-13 23:49:43,517 INFO L432 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 23:49:43,517 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 23:49:43,539 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 23:49:43,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:49:43,722 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:177) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertCodeBlock(IncrementalHoareTripleChecker.java:436) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:278) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:284) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.releaseLock(ChainingHoareTripleChecker.java:449) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1708) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:762) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.releaseLock(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:385) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:276) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:447) at java.base/java.io.OutputStream.write(OutputStream.java:167) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:125) at java.base/java.io.BufferedOutputStream.implFlush(BufferedOutputStream.java:252) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:246) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:412) at java.base/sun.nio.cs.StreamEncoder.lockedFlush(StreamEncoder.java:214) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:201) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:262) at java.base/java.io.BufferedWriter.implFlush(BufferedWriter.java:372) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:359) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 36 more [2024-11-13 23:49:43,725 INFO L158 Benchmark]: Toolchain (without parser) took 279219.12ms. Allocated memory was 117.4MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 91.3MB in the beginning and 1.1GB in the end (delta: -986.9MB). Peak memory consumption was 346.4MB. Max. memory is 16.1GB. [2024-11-13 23:49:43,725 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 117.4MB. Free memory is still 73.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 23:49:43,725 INFO L158 Benchmark]: CACSL2BoogieTranslator took 469.69ms. Allocated memory is still 117.4MB. Free memory was 91.0MB in the beginning and 74.2MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 23:49:43,725 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.96ms. Allocated memory is still 117.4MB. Free memory was 73.9MB in the beginning and 72.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 23:49:43,726 INFO L158 Benchmark]: Boogie Preprocessor took 25.84ms. Allocated memory is still 117.4MB. Free memory was 72.5MB in the beginning and 71.6MB in the end (delta: 888.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 23:49:43,726 INFO L158 Benchmark]: RCFGBuilder took 391.96ms. Allocated memory is still 117.4MB. Free memory was 71.6MB in the beginning and 56.5MB in the end (delta: 15.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 23:49:43,726 INFO L158 Benchmark]: TraceAbstraction took 278277.69ms. Allocated memory was 117.4MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 55.9MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 321.3MB. Max. memory is 16.1GB. [2024-11-13 23:49:43,728 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 117.4MB. Free memory is still 73.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 469.69ms. Allocated memory is still 117.4MB. Free memory was 91.0MB in the beginning and 74.2MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.96ms. Allocated memory is still 117.4MB. Free memory was 73.9MB in the beginning and 72.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 25.84ms. Allocated memory is still 117.4MB. Free memory was 72.5MB in the beginning and 71.6MB in the end (delta: 888.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 391.96ms. Allocated memory is still 117.4MB. Free memory was 71.6MB in the beginning and 56.5MB in the end (delta: 15.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 278277.69ms. Allocated memory was 117.4MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 55.9MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 321.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/heap-data/min_max.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6f3dc8ca7e9d6160ebf6e1f17d4641cf9f9e9c7a0130658f0fd8bbb7edc9643d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 23:49:46,237 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 23:49:46,366 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2024-11-13 23:49:46,376 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 23:49:46,376 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 23:49:46,428 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 23:49:46,429 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 23:49:46,429 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 23:49:46,430 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 23:49:46,431 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 23:49:46,431 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-13 23:49:46,431 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-13 23:49:46,431 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-13 23:49:46,431 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-13 23:49:46,431 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-13 23:49:46,431 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-13 23:49:46,432 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 23:49:46,432 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 23:49:46,432 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 23:49:46,434 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 23:49:46,434 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 23:49:46,434 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 23:49:46,434 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 23:49:46,434 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 23:49:46,434 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 23:49:46,434 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-13 23:49:46,435 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 23:49:46,435 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-13 23:49:46,435 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 23:49:46,435 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 23:49:46,435 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 23:49:46,435 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 23:49:46,435 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 23:49:46,435 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 23:49:46,436 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 23:49:46,436 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:49:46,437 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 23:49:46,437 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 23:49:46,437 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 23:49:46,437 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-13 23:49:46,437 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-13 23:49:46,437 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 23:49:46,437 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-13 23:49:46,437 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f3dc8ca7e9d6160ebf6e1f17d4641cf9f9e9c7a0130658f0fd8bbb7edc9643d [2024-11-13 23:49:46,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 23:49:46,789 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 23:49:46,791 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 23:49:46,792 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 23:49:46,793 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 23:49:46,794 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/heap-data/min_max.i Unable to find full path for "g++" [2024-11-13 23:49:48,669 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 23:49:49,001 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 23:49:49,002 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/sv-benchmarks/c/heap-data/min_max.i [2024-11-13 23:49:49,014 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/data/f3b2a6b0e/77d0be1c92194c87978fa157823e51ea/FLAG844acd4f8 [2024-11-13 23:49:49,029 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/data/f3b2a6b0e/77d0be1c92194c87978fa157823e51ea [2024-11-13 23:49:49,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 23:49:49,033 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 23:49:49,034 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 23:49:49,035 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 23:49:49,039 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 23:49:49,040 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:49:49" (1/1) ... [2024-11-13 23:49:49,040 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e2a3f14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:49:49, skipping insertion in model container [2024-11-13 23:49:49,041 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:49:49" (1/1) ... [2024-11-13 23:49:49,069 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 23:49:49,401 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_46457f06-5901-43f3-a025-f8fc8f5ee1cc/sv-benchmarks/c/heap-data/min_max.i[23535,23548] [2024-11-13 23:49:49,405 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_46457f06-5901-43f3-a025-f8fc8f5ee1cc/sv-benchmarks/c/heap-data/min_max.i[23590,23603] [2024-11-13 23:49:49,406 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:49:49,420 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 23:49:49,468 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_46457f06-5901-43f3-a025-f8fc8f5ee1cc/sv-benchmarks/c/heap-data/min_max.i[23535,23548] [2024-11-13 23:49:49,469 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_46457f06-5901-43f3-a025-f8fc8f5ee1cc/sv-benchmarks/c/heap-data/min_max.i[23590,23603] [2024-11-13 23:49:49,470 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:49:49,503 INFO L204 MainTranslator]: Completed translation [2024-11-13 23:49:49,504 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:49:49 WrapperNode [2024-11-13 23:49:49,504 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 23:49:49,505 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 23:49:49,505 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 23:49:49,505 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 23:49:49,512 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:49:49" (1/1) ... [2024-11-13 23:49:49,530 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:49:49" (1/1) ... [2024-11-13 23:49:49,558 INFO L138 Inliner]: procedures = 124, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 58 [2024-11-13 23:49:49,558 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 23:49:49,559 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 23:49:49,559 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 23:49:49,559 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 23:49:49,566 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:49:49" (1/1) ... [2024-11-13 23:49:49,566 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:49:49" (1/1) ... [2024-11-13 23:49:49,569 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:49:49" (1/1) ... [2024-11-13 23:49:49,570 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:49:49" (1/1) ... [2024-11-13 23:49:49,583 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:49:49" (1/1) ... [2024-11-13 23:49:49,589 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:49:49" (1/1) ... [2024-11-13 23:49:49,590 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:49:49" (1/1) ... [2024-11-13 23:49:49,591 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:49:49" (1/1) ... [2024-11-13 23:49:49,594 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 23:49:49,595 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 23:49:49,595 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 23:49:49,596 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 23:49:49,597 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:49:49" (1/1) ... [2024-11-13 23:49:49,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:49:49,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:49:49,629 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-13 23:49:49,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-13 23:49:49,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2024-11-13 23:49:49,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 23:49:49,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 23:49:49,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-13 23:49:49,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-13 23:49:49,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2024-11-13 23:49:49,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-13 23:49:49,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 23:49:49,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 23:49:49,778 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 23:49:49,780 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 23:49:49,967 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-13 23:49:49,968 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 23:49:49,981 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 23:49:49,981 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 23:49:49,981 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:49:49 BoogieIcfgContainer [2024-11-13 23:49:49,981 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 23:49:49,984 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 23:49:49,984 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 23:49:49,990 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 23:49:49,991 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 11:49:49" (1/3) ... [2024-11-13 23:49:49,992 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57848fae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:49:49, skipping insertion in model container [2024-11-13 23:49:49,992 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:49:49" (2/3) ... [2024-11-13 23:49:49,992 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57848fae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:49:49, skipping insertion in model container [2024-11-13 23:49:49,992 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:49:49" (3/3) ... [2024-11-13 23:49:49,993 INFO L112 eAbstractionObserver]: Analyzing ICFG min_max.i [2024-11-13 23:49:50,010 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 23:49:50,013 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG min_max.i that has 1 procedures, 21 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-13 23:49:50,070 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 23:49:50,086 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;@6f2ce627, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 23:49:50,086 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-13 23:49:50,090 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 20 states have internal predecessors, (28), 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) [2024-11-13 23:49:50,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-13 23:49:50,096 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:49:50,096 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:49:50,097 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:49:50,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:49:50,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1825904481, now seen corresponding path program 1 times [2024-11-13 23:49:50,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:49:50,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2005942316] [2024-11-13 23:49:50,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:49:50,117 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 23:49:50,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:49:50,123 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 23:49:50,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-13 23:49:50,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:49:50,220 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-13 23:49:50,225 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:49:50,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:49:50,245 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:49:50,248 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-13 23:49:50,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2005942316] [2024-11-13 23:49:50,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2005942316] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:49:50,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:49:50,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 23:49:50,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286190144] [2024-11-13 23:49:50,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:49:50,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 23:49:50,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-13 23:49:50,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 23:49:50,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 23:49:50,277 INFO L87 Difference]: Start difference. First operand has 21 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 20 states have internal predecessors, (28), 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 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2024-11-13 23:49:50,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:49:50,291 INFO L93 Difference]: Finished difference Result 34 states and 44 transitions. [2024-11-13 23:49:50,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 23:49:50,293 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2024-11-13 23:49:50,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:49:50,300 INFO L225 Difference]: With dead ends: 34 [2024-11-13 23:49:50,300 INFO L226 Difference]: Without dead ends: 18 [2024-11-13 23:49:50,303 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 23:49:50,307 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 23:49:50,308 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 23:49:50,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-13 23:49:50,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-13 23:49:50,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 16 states have (on average 1.3125) internal successors, (21), 17 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) [2024-11-13 23:49:50,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2024-11-13 23:49:50,351 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 7 [2024-11-13 23:49:50,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:49:50,352 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2024-11-13 23:49:50,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2024-11-13 23:49:50,352 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2024-11-13 23:49:50,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-13 23:49:50,353 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:49:50,353 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:49:50,358 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-13 23:49:50,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 23:49:50,556 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:49:50,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:49:50,556 INFO L85 PathProgramCache]: Analyzing trace with hash 148540271, now seen corresponding path program 1 times [2024-11-13 23:49:50,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:49:50,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1653017400] [2024-11-13 23:49:50,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:49:50,557 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 23:49:50,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:49:50,562 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 23:49:50,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-13 23:49:50,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:49:50,636 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 23:49:50,638 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:49:50,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:49:50,800 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:49:50,801 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-13 23:49:50,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1653017400] [2024-11-13 23:49:50,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1653017400] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:49:50,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:49:50,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 23:49:50,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868443927] [2024-11-13 23:49:50,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:49:50,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:49:50,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-13 23:49:50,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:49:50,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:49:50,806 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-11-13 23:49:50,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:49:50,900 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2024-11-13 23:49:50,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 23:49:50,901 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2024-11-13 23:49:50,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:49:50,902 INFO L225 Difference]: With dead ends: 31 [2024-11-13 23:49:50,902 INFO L226 Difference]: Without dead ends: 20 [2024-11-13 23:49:50,902 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:49:50,903 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 23:49:50,904 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 23:49:50,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-13 23:49:50,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-13 23:49:50,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 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) [2024-11-13 23:49:50,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2024-11-13 23:49:50,912 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 8 [2024-11-13 23:49:50,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:49:50,912 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2024-11-13 23:49:50,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-11-13 23:49:50,913 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2024-11-13 23:49:50,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-13 23:49:50,914 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:49:50,914 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:49:50,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-13 23:49:51,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 23:49:51,115 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:49:51,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:49:51,115 INFO L85 PathProgramCache]: Analyzing trace with hash 923009882, now seen corresponding path program 1 times [2024-11-13 23:49:51,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:49:51,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [887124693] [2024-11-13 23:49:51,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:49:51,116 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 23:49:51,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:49:51,120 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 23:49:51,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-13 23:49:51,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:49:51,210 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 23:49:51,212 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:49:51,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2024-11-13 23:49:51,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:49:51,478 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:49:51,478 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-13 23:49:51,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [887124693] [2024-11-13 23:49:51,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [887124693] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:49:51,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:49:51,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 23:49:51,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621539106] [2024-11-13 23:49:51,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:49:51,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 23:49:51,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-13 23:49:51,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 23:49:51,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 23:49:51,480 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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) [2024-11-13 23:49:51,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:49:51,771 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2024-11-13 23:49:51,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 23:49:51,771 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-13 23:49:51,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:49:51,772 INFO L225 Difference]: With dead ends: 45 [2024-11-13 23:49:51,772 INFO L226 Difference]: Without dead ends: 43 [2024-11-13 23:49:51,773 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-13 23:49:51,774 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 18 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 23:49:51,775 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 67 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 23:49:51,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-13 23:49:51,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 29. [2024-11-13 23:49:51,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 28 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:49:51,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2024-11-13 23:49:51,785 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 14 [2024-11-13 23:49:51,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:49:51,785 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2024-11-13 23:49:51,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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) [2024-11-13 23:49:51,786 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2024-11-13 23:49:51,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-13 23:49:51,786 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:49:51,786 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:49:51,790 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-11-13 23:49:51,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 23:49:51,987 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:49:51,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:49:51,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1316036892, now seen corresponding path program 1 times [2024-11-13 23:49:51,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:49:51,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [238190622] [2024-11-13 23:49:51,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:49:51,988 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 23:49:51,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:49:51,991 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 23:49:51,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-13 23:49:52,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:49:52,082 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 23:49:52,084 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:49:52,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-13 23:49:52,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:49:52,202 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:49:52,202 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-13 23:49:52,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [238190622] [2024-11-13 23:49:52,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [238190622] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:49:52,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:49:52,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 23:49:52,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129807841] [2024-11-13 23:49:52,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:49:52,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 23:49:52,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-13 23:49:52,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 23:49:52,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 23:49:52,204 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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) [2024-11-13 23:49:52,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:49:52,546 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2024-11-13 23:49:52,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 23:49:52,547 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-13 23:49:52,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:49:52,548 INFO L225 Difference]: With dead ends: 47 [2024-11-13 23:49:52,548 INFO L226 Difference]: Without dead ends: 45 [2024-11-13 23:49:52,548 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 23:49:52,549 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 11 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 23:49:52,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 93 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 23:49:52,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-13 23:49:52,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 34. [2024-11-13 23:49:52,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 32 states have (on average 1.3125) internal successors, (42), 33 states have internal predecessors, (42), 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) [2024-11-13 23:49:52,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2024-11-13 23:49:52,555 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 14 [2024-11-13 23:49:52,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:49:52,556 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2024-11-13 23:49:52,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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) [2024-11-13 23:49:52,556 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2024-11-13 23:49:52,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-13 23:49:52,556 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:49:52,556 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:49:52,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-11-13 23:49:52,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 23:49:52,757 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:49:52,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:49:52,757 INFO L85 PathProgramCache]: Analyzing trace with hash -2045608132, now seen corresponding path program 1 times [2024-11-13 23:49:52,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:49:52,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1658469646] [2024-11-13 23:49:52,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:49:52,758 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 23:49:52,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:49:52,761 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 23:49:52,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-11-13 23:49:52,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:49:52,828 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 23:49:52,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:49:53,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 11 [2024-11-13 23:49:53,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:49:53,112 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:49:53,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 8 [2024-11-13 23:49:53,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:49:53,368 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-13 23:49:53,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1658469646] [2024-11-13 23:49:53,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1658469646] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 23:49:53,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:49:53,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2024-11-13 23:49:53,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845285248] [2024-11-13 23:49:53,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:49:53,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 23:49:53,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-13 23:49:53,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 23:49:53,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-13 23:49:53,371 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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) [2024-11-13 23:49:53,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:49:53,682 INFO L93 Difference]: Finished difference Result 56 states and 67 transitions. [2024-11-13 23:49:53,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 23:49:53,684 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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 16 [2024-11-13 23:49:53,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:49:53,685 INFO L225 Difference]: With dead ends: 56 [2024-11-13 23:49:53,686 INFO L226 Difference]: Without dead ends: 54 [2024-11-13 23:49:53,686 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-11-13 23:49:53,687 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 8 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 23:49:53,687 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 58 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 23:49:53,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-13 23:49:53,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2024-11-13 23:49:53,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 50 states have internal predecessors, (63), 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) [2024-11-13 23:49:53,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2024-11-13 23:49:53,699 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 16 [2024-11-13 23:49:53,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:49:53,699 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2024-11-13 23:49:53,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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) [2024-11-13 23:49:53,699 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2024-11-13 23:49:53,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-13 23:49:53,700 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:49:53,700 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:49:53,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-11-13 23:49:53,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 23:49:53,900 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:49:53,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:49:53,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1856332154, now seen corresponding path program 1 times [2024-11-13 23:49:53,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:49:53,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1679405377] [2024-11-13 23:49:53,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:49:53,901 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 23:49:53,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:49:53,903 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 23:49:53,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-11-13 23:49:53,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:49:53,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 23:49:53,974 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:49:54,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2024-11-13 23:49:54,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:49:54,099 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:49:54,099 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-13 23:49:54,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1679405377] [2024-11-13 23:49:54,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1679405377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:49:54,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:49:54,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 23:49:54,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679567531] [2024-11-13 23:49:54,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:49:54,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 23:49:54,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-13 23:49:54,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 23:49:54,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 23:49:54,101 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) [2024-11-13 23:49:54,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:49:54,249 INFO L93 Difference]: Finished difference Result 101 states and 127 transitions. [2024-11-13 23:49:54,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 23:49:54,250 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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 16 [2024-11-13 23:49:54,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:49:54,251 INFO L225 Difference]: With dead ends: 101 [2024-11-13 23:49:54,251 INFO L226 Difference]: Without dead ends: 54 [2024-11-13 23:49:54,251 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-13 23:49:54,252 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 23:49:54,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 52 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 23:49:54,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-13 23:49:54,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-13 23:49:54,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 52 states have (on average 1.2884615384615385) internal successors, (67), 53 states have internal predecessors, (67), 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) [2024-11-13 23:49:54,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 67 transitions. [2024-11-13 23:49:54,265 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 67 transitions. Word has length 16 [2024-11-13 23:49:54,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:49:54,265 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 67 transitions. [2024-11-13 23:49:54,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) [2024-11-13 23:49:54,266 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 67 transitions. [2024-11-13 23:49:54,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-13 23:49:54,266 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:49:54,266 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:49:54,271 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-11-13 23:49:54,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 23:49:54,470 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:49:54,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:49:54,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1598166716, now seen corresponding path program 1 times [2024-11-13 23:49:54,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:49:54,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [587662820] [2024-11-13 23:49:54,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:49:54,471 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 23:49:54,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:49:54,472 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 23:49:54,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-11-13 23:49:54,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:49:54,559 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 23:49:54,562 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:49:54,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2024-11-13 23:49:54,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:49:54,834 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:49:54,834 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-13 23:49:54,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [587662820] [2024-11-13 23:49:54,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [587662820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:49:54,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:49:54,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 23:49:54,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816119866] [2024-11-13 23:49:54,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:49:54,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 23:49:54,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-13 23:49:54,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 23:49:54,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-13 23:49:54,836 INFO L87 Difference]: Start difference. First operand 54 states and 67 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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) [2024-11-13 23:49:55,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:49:55,295 INFO L93 Difference]: Finished difference Result 87 states and 105 transitions. [2024-11-13 23:49:55,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 23:49:55,296 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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 16 [2024-11-13 23:49:55,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:49:55,297 INFO L225 Difference]: With dead ends: 87 [2024-11-13 23:49:55,297 INFO L226 Difference]: Without dead ends: 85 [2024-11-13 23:49:55,297 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-13 23:49:55,298 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 17 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 23:49:55,298 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 124 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 23:49:55,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-13 23:49:55,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 65. [2024-11-13 23:49:55,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 63 states have (on average 1.3174603174603174) internal successors, (83), 64 states have internal predecessors, (83), 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) [2024-11-13 23:49:55,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 83 transitions. [2024-11-13 23:49:55,313 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 83 transitions. Word has length 16 [2024-11-13 23:49:55,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:49:55,313 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 83 transitions. [2024-11-13 23:49:55,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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) [2024-11-13 23:49:55,313 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 83 transitions. [2024-11-13 23:49:55,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 23:49:55,314 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:49:55,314 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:49:55,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2024-11-13 23:49:55,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 23:49:55,515 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:49:55,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:49:55,515 INFO L85 PathProgramCache]: Analyzing trace with hash 582982409, now seen corresponding path program 1 times [2024-11-13 23:49:55,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:49:55,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1525434197] [2024-11-13 23:49:55,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:49:55,516 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 23:49:55,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:49:55,518 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 23:49:55,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-11-13 23:49:55,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:49:55,595 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 23:49:55,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:49:55,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:49:55,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:49:55,802 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:49:55,802 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:49:55,926 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:49:55,926 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-13 23:49:55,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1525434197] [2024-11-13 23:49:55,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1525434197] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:49:55,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [209337155] [2024-11-13 23:49:55,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:49:55,927 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 23:49:55,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-13 23:49:55,929 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 23:49:55,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2024-11-13 23:49:56,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:49:56,059 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-13 23:49:56,061 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:49:56,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:49:56,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:49:56,313 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:49:56,314 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:49:56,451 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:49:56,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [209337155] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:49:56,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619178283] [2024-11-13 23:49:56,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:49:56,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:49:56,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:49:56,455 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:49:56,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 23:49:56,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:49:56,534 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-13 23:49:56,536 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:49:56,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:49:56,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:49:56,672 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:49:56,672 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:49:56,780 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:49:56,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619178283] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:49:56,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-13 23:49:56,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 8 [2024-11-13 23:49:56,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171264608] [2024-11-13 23:49:56,781 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-13 23:49:56,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 23:49:56,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-13 23:49:56,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 23:49:56,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-13 23:49:56,782 INFO L87 Difference]: Start difference. First operand 65 states and 83 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 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) [2024-11-13 23:49:57,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:49:57,066 INFO L93 Difference]: Finished difference Result 92 states and 114 transitions. [2024-11-13 23:49:57,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 23:49:57,067 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 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 19 [2024-11-13 23:49:57,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:49:57,067 INFO L225 Difference]: With dead ends: 92 [2024-11-13 23:49:57,068 INFO L226 Difference]: Without dead ends: 76 [2024-11-13 23:49:57,068 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-13 23:49:57,068 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 2 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 23:49:57,069 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 110 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 23:49:57,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-13 23:49:57,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-11-13 23:49:57,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 74 states have (on average 1.2837837837837838) internal successors, (95), 75 states have internal predecessors, (95), 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) [2024-11-13 23:49:57,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 95 transitions. [2024-11-13 23:49:57,088 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 95 transitions. Word has length 19 [2024-11-13 23:49:57,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:49:57,089 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 95 transitions. [2024-11-13 23:49:57,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 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) [2024-11-13 23:49:57,089 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 95 transitions. [2024-11-13 23:49:57,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 23:49:57,090 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:49:57,090 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:49:57,095 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2024-11-13 23:49:57,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-11-13 23:49:57,503 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 23:49:57,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:49:57,691 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:49:57,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:49:57,692 INFO L85 PathProgramCache]: Analyzing trace with hash 875356999, now seen corresponding path program 1 times [2024-11-13 23:49:57,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:49:57,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [362591402] [2024-11-13 23:49:57,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:49:57,692 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 23:49:57,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:49:57,694 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 23:49:57,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-11-13 23:49:57,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:49:57,801 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 23:49:57,802 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:49:57,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-13 23:49:58,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 23:49:58,295 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:49:58,296 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:49:58,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-11-13 23:49:58,704 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 23:49:58,705 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-13 23:49:58,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [362591402] [2024-11-13 23:49:58,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [362591402] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 23:49:58,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:49:58,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 19 [2024-11-13 23:49:58,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176517194] [2024-11-13 23:49:58,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:49:58,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 23:49:58,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-13 23:49:58,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 23:49:58,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2024-11-13 23:49:58,707 INFO L87 Difference]: Start difference. First operand 76 states and 95 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:49:59,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:49:59,184 INFO L93 Difference]: Finished difference Result 87 states and 106 transitions. [2024-11-13 23:49:59,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 23:49:59,185 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-13 23:49:59,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:49:59,186 INFO L225 Difference]: With dead ends: 87 [2024-11-13 23:49:59,186 INFO L226 Difference]: Without dead ends: 85 [2024-11-13 23:49:59,187 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2024-11-13 23:49:59,187 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 23:49:59,188 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 47 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 23:49:59,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-13 23:49:59,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 73. [2024-11-13 23:49:59,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 71 states have (on average 1.2816901408450705) internal successors, (91), 72 states have internal predecessors, (91), 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) [2024-11-13 23:49:59,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 91 transitions. [2024-11-13 23:49:59,196 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 91 transitions. Word has length 20 [2024-11-13 23:49:59,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:49:59,196 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 91 transitions. [2024-11-13 23:49:59,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:49:59,197 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 91 transitions. [2024-11-13 23:49:59,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 23:49:59,197 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:49:59,197 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:49:59,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2024-11-13 23:49:59,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 23:49:59,398 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:49:59,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:49:59,399 INFO L85 PathProgramCache]: Analyzing trace with hash 66010373, now seen corresponding path program 1 times [2024-11-13 23:49:59,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:49:59,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2040975614] [2024-11-13 23:49:59,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:49:59,399 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 23:49:59,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:49:59,401 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 23:49:59,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-11-13 23:49:59,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:49:59,507 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 23:49:59,508 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:49:59,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 23:49:59,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-11-13 23:50:00,022 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:50:00,023 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:50:00,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-13 23:50:00,418 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 23:50:00,418 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-13 23:50:00,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2040975614] [2024-11-13 23:50:00,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2040975614] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 23:50:00,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:50:00,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-11-13 23:50:00,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285988176] [2024-11-13 23:50:00,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:50:00,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 23:50:00,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-13 23:50:00,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 23:50:00,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2024-11-13 23:50:00,420 INFO L87 Difference]: Start difference. First operand 73 states and 91 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:50:00,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:50:00,894 INFO L93 Difference]: Finished difference Result 87 states and 105 transitions. [2024-11-13 23:50:00,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 23:50:00,895 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-13 23:50:00,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:50:00,895 INFO L225 Difference]: With dead ends: 87 [2024-11-13 23:50:00,896 INFO L226 Difference]: Without dead ends: 85 [2024-11-13 23:50:00,896 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2024-11-13 23:50:00,897 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 8 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 23:50:00,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 60 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 23:50:00,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-13 23:50:00,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 47. [2024-11-13 23:50:00,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 46 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) [2024-11-13 23:50:00,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2024-11-13 23:50:00,903 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 20 [2024-11-13 23:50:00,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:50:00,903 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2024-11-13 23:50:00,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:50:00,904 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2024-11-13 23:50:00,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-13 23:50:00,904 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:50:00,904 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:50:00,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2024-11-13 23:50:01,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 23:50:01,105 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:50:01,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:50:01,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1312407141, now seen corresponding path program 1 times [2024-11-13 23:50:01,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:50:01,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [246252882] [2024-11-13 23:50:01,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:50:01,106 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 23:50:01,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:50:01,108 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 23:50:01,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-11-13 23:50:01,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:50:01,198 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 23:50:01,200 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:50:01,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2024-11-13 23:50:01,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2024-11-13 23:50:01,421 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 23:50:01,421 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:50:01,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2024-11-13 23:50:01,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-13 23:50:01,614 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 23:50:01,614 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-13 23:50:01,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [246252882] [2024-11-13 23:50:01,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [246252882] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:50:01,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [183562054] [2024-11-13 23:50:01,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:50:01,614 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 23:50:01,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-13 23:50:01,618 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 23:50:01,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2024-11-13 23:50:01,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:50:01,777 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 23:50:01,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:50:01,857 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 23:50:01,857 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:50:01,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-13 23:50:01,916 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 23:50:01,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [183562054] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:50:01,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772505311] [2024-11-13 23:50:01,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:50:01,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:50:01,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:50:01,919 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:50:01,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 23:50:02,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:50:02,020 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 23:50:02,021 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:50:02,107 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 23:50:02,108 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:50:02,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-13 23:50:02,169 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 23:50:02,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772505311] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:50:02,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-13 23:50:02,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 6, 6, 6, 6] total 15 [2024-11-13 23:50:02,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948344469] [2024-11-13 23:50:02,170 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-13 23:50:02,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 23:50:02,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-13 23:50:02,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 23:50:02,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2024-11-13 23:50:02,171 INFO L87 Difference]: Start difference. First operand 47 states and 56 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:50:02,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:50:02,698 INFO L93 Difference]: Finished difference Result 108 states and 129 transitions. [2024-11-13 23:50:02,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 23:50:02,699 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-13 23:50:02,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:50:02,700 INFO L225 Difference]: With dead ends: 108 [2024-11-13 23:50:02,700 INFO L226 Difference]: Without dead ends: 82 [2024-11-13 23:50:02,700 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 108 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2024-11-13 23:50:02,701 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 26 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 23:50:02,701 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 113 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 23:50:02,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-13 23:50:02,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 64. [2024-11-13 23:50:02,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 62 states have (on average 1.2258064516129032) internal successors, (76), 63 states have internal predecessors, (76), 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) [2024-11-13 23:50:02,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 76 transitions. [2024-11-13 23:50:02,709 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 76 transitions. Word has length 22 [2024-11-13 23:50:02,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:50:02,709 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 76 transitions. [2024-11-13 23:50:02,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:50:02,710 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 76 transitions. [2024-11-13 23:50:02,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-13 23:50:02,710 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:50:02,710 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:50:02,716 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-11-13 23:50:02,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2024-11-13 23:50:03,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 23:50:03,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:50:03,314 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:50:03,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:50:03,315 INFO L85 PathProgramCache]: Analyzing trace with hash -988415449, now seen corresponding path program 1 times [2024-11-13 23:50:03,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:50:03,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [727969693] [2024-11-13 23:50:03,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:50:03,315 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 23:50:03,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:50:03,317 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 23:50:03,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2024-11-13 23:50:03,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:50:03,491 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 23:50:03,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:50:03,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 23:50:04,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-11-13 23:50:04,115 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:50:04,115 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:50:04,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2024-11-13 23:50:04,688 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 23:50:04,688 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-13 23:50:04,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [727969693] [2024-11-13 23:50:04,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [727969693] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 23:50:04,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:50:04,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [13] total 21 [2024-11-13 23:50:04,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462924292] [2024-11-13 23:50:04,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:50:04,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 23:50:04,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-13 23:50:04,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 23:50:04,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2024-11-13 23:50:04,690 INFO L87 Difference]: Start difference. First operand 64 states and 76 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 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) [2024-11-13 23:50:05,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:50:05,301 INFO L93 Difference]: Finished difference Result 98 states and 115 transitions. [2024-11-13 23:50:05,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 23:50:05,301 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 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) Word has length 22 [2024-11-13 23:50:05,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:50:05,302 INFO L225 Difference]: With dead ends: 98 [2024-11-13 23:50:05,302 INFO L226 Difference]: Without dead ends: 96 [2024-11-13 23:50:05,303 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2024-11-13 23:50:05,303 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 5 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 23:50:05,304 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 55 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 23:50:05,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-13 23:50:05,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 66. [2024-11-13 23:50:05,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 64 states have (on average 1.234375) internal successors, (79), 65 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:50:05,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 79 transitions. [2024-11-13 23:50:05,311 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 79 transitions. Word has length 22 [2024-11-13 23:50:05,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:50:05,311 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 79 transitions. [2024-11-13 23:50:05,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 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) [2024-11-13 23:50:05,312 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 79 transitions. [2024-11-13 23:50:05,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-13 23:50:05,312 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:50:05,313 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:50:05,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2024-11-13 23:50:05,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 23:50:05,516 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:50:05,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:50:05,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1246580887, now seen corresponding path program 1 times [2024-11-13 23:50:05,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:50:05,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [662917131] [2024-11-13 23:50:05,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:50:05,517 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 23:50:05,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:50:05,521 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 23:50:05,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2024-11-13 23:50:05,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:50:05,605 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 23:50:05,606 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:50:05,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 23:50:05,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 23:50:05,886 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:50:05,886 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:50:06,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-11-13 23:50:06,222 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 23:50:06,223 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-13 23:50:06,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [662917131] [2024-11-13 23:50:06,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [662917131] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 23:50:06,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:50:06,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-11-13 23:50:06,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493025958] [2024-11-13 23:50:06,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:50:06,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 23:50:06,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-13 23:50:06,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 23:50:06,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2024-11-13 23:50:06,224 INFO L87 Difference]: Start difference. First operand 66 states and 79 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 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) [2024-11-13 23:50:06,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:50:06,594 INFO L93 Difference]: Finished difference Result 82 states and 96 transitions. [2024-11-13 23:50:06,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 23:50:06,595 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 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) Word has length 22 [2024-11-13 23:50:06,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:50:06,595 INFO L225 Difference]: With dead ends: 82 [2024-11-13 23:50:06,595 INFO L226 Difference]: Without dead ends: 80 [2024-11-13 23:50:06,596 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2024-11-13 23:50:06,596 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 4 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 23:50:06,597 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 62 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 23:50:06,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-13 23:50:06,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 49. [2024-11-13 23:50:06,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 48 states have internal predecessors, (57), 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) [2024-11-13 23:50:06,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2024-11-13 23:50:06,603 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 22 [2024-11-13 23:50:06,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:50:06,603 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2024-11-13 23:50:06,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 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) [2024-11-13 23:50:06,603 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2024-11-13 23:50:06,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-13 23:50:06,604 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:50:06,604 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:50:06,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2024-11-13 23:50:06,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 23:50:06,804 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:50:06,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:50:06,805 INFO L85 PathProgramCache]: Analyzing trace with hash 837721920, now seen corresponding path program 1 times [2024-11-13 23:50:06,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:50:06,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1178683792] [2024-11-13 23:50:06,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:50:06,805 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 23:50:06,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:50:06,809 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 23:50:06,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2024-11-13 23:50:06,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:50:06,937 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-13 23:50:06,939 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:50:06,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 23:50:07,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 23:50:07,107 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2024-11-13 23:50:07,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-13 23:50:07,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 23:50:07,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22 [2024-11-13 23:50:07,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2024-11-13 23:50:07,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2024-11-13 23:50:07,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2024-11-13 23:50:07,369 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:50:07,369 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:50:07,790 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:50:07,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2024-11-13 23:50:07,796 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:50:07,797 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-13 23:50:07,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1178683792] [2024-11-13 23:50:07,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1178683792] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:50:07,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [550803205] [2024-11-13 23:50:07,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:50:07,797 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 23:50:07,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-13 23:50:07,799 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 23:50:07,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2024-11-13 23:50:07,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:50:07,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-13 23:50:07,986 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:50:08,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2024-11-13 23:50:08,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 23:50:08,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 23:50:08,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:50:08,240 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-13 23:50:08,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 24 [2024-11-13 23:50:08,275 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2024-11-13 23:50:08,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-13 23:50:08,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2024-11-13 23:50:08,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-13 23:50:08,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-13 23:50:08,705 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:50:08,706 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:50:08,966 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:50:08,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2024-11-13 23:50:08,977 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:50:08,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [550803205] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:50:08,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820258134] [2024-11-13 23:50:08,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:50:08,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:50:08,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:50:08,979 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:50:08,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 23:50:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:50:09,081 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-13 23:50:09,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:50:09,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 23:50:09,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:50:09,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 23:50:09,220 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2024-11-13 23:50:09,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-13 23:50:09,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2024-11-13 23:50:09,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2024-11-13 23:50:09,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-13 23:50:09,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-13 23:50:09,559 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:50:09,559 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:50:09,821 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:50:09,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-13 23:50:09,825 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:50:09,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820258134] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:50:09,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-13 23:50:09,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9, 8, 9, 8] total 22 [2024-11-13 23:50:09,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336209423] [2024-11-13 23:50:09,825 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-13 23:50:09,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 23:50:09,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-13 23:50:09,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 23:50:09,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2024-11-13 23:50:09,826 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 22 states, 22 states have (on average 3.6818181818181817) internal successors, (81), 22 states have internal predecessors, (81), 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) [2024-11-13 23:50:12,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 23:50:14,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:50:14,020 INFO L93 Difference]: Finished difference Result 129 states and 150 transitions. [2024-11-13 23:50:14,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 23:50:14,021 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.6818181818181817) internal successors, (81), 22 states have internal predecessors, (81), 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 [2024-11-13 23:50:14,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:50:14,022 INFO L225 Difference]: With dead ends: 129 [2024-11-13 23:50:14,022 INFO L226 Difference]: Without dead ends: 127 [2024-11-13 23:50:14,023 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=151, Invalid=715, Unknown=4, NotChecked=0, Total=870 [2024-11-13 23:50:14,023 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 37 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 3 mSolverCounterUnsat, 22 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 22 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-13 23:50:14,024 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 208 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 253 Invalid, 22 Unknown, 0 Unchecked, 3.7s Time] [2024-11-13 23:50:14,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-13 23:50:14,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 96. [2024-11-13 23:50:14,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 94 states have (on average 1.2234042553191489) internal successors, (115), 95 states have internal predecessors, (115), 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) [2024-11-13 23:50:14,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 115 transitions. [2024-11-13 23:50:14,035 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 115 transitions. Word has length 25 [2024-11-13 23:50:14,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:50:14,035 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 115 transitions. [2024-11-13 23:50:14,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.6818181818181817) internal successors, (81), 22 states have internal predecessors, (81), 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) [2024-11-13 23:50:14,036 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 115 transitions. [2024-11-13 23:50:14,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-13 23:50:14,036 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:50:14,037 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:50:14,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2024-11-13 23:50:14,253 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-13 23:50:14,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2024-11-13 23:50:14,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-13 23:50:14,641 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:50:14,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:50:14,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1001826108, now seen corresponding path program 1 times [2024-11-13 23:50:14,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:50:14,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1002449244] [2024-11-13 23:50:14,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:50:14,642 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 23:50:14,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:50:14,646 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 23:50:14,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2024-11-13 23:50:14,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:50:14,764 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-13 23:50:14,766 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:50:14,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 23:50:14,931 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-13 23:50:14,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 29 [2024-11-13 23:50:14,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2024-11-13 23:50:14,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 23:50:14,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 23:50:15,007 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2024-11-13 23:50:15,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-13 23:50:15,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2024-11-13 23:50:15,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2024-11-13 23:50:15,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-13 23:50:15,276 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:50:15,276 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:50:15,773 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:50:15,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 34 [2024-11-13 23:50:15,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2024-11-13 23:50:15,992 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:50:15,992 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-13 23:50:15,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1002449244] [2024-11-13 23:50:15,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1002449244] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:50:15,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1985995035] [2024-11-13 23:50:15,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:50:15,993 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 23:50:15,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-13 23:50:15,997 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 23:50:15,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2024-11-13 23:50:16,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:50:16,218 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-13 23:50:16,221 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:50:16,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 23:50:16,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2024-11-13 23:50:16,478 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-13 23:50:16,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 23 [2024-11-13 23:50:16,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-13 23:50:16,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:50:16,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 23:50:16,547 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2024-11-13 23:50:16,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-13 23:50:17,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-13 23:50:17,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-13 23:50:17,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 23:50:17,119 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:50:17,119 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:50:19,669 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:50:19,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1985995035] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:50:19,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766137021] [2024-11-13 23:50:19,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:50:19,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:50:19,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:50:19,673 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:50:19,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-13 23:50:19,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:50:19,792 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-13 23:50:19,794 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:50:19,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 23:50:19,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:50:19,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 23:50:19,936 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2024-11-13 23:50:19,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-13 23:50:19,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-13 23:50:20,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-13 23:50:20,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-13 23:50:20,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 23:50:20,309 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:50:20,309 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:50:20,732 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:50:20,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 34 [2024-11-13 23:50:20,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2024-11-13 23:50:20,821 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:50:20,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766137021] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:50:20,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-13 23:50:20,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 22 [2024-11-13 23:50:20,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258537014] [2024-11-13 23:50:20,822 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-13 23:50:20,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 23:50:20,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-13 23:50:20,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 23:50:20,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=393, Unknown=4, NotChecked=0, Total=462 [2024-11-13 23:50:20,823 INFO L87 Difference]: Start difference. First operand 96 states and 115 transitions. Second operand has 22 states, 22 states have (on average 3.6818181818181817) internal successors, (81), 22 states have internal predecessors, (81), 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) [2024-11-13 23:50:22,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:50:22,226 INFO L93 Difference]: Finished difference Result 134 states and 154 transitions. [2024-11-13 23:50:22,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 23:50:22,227 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.6818181818181817) internal successors, (81), 22 states have internal predecessors, (81), 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 [2024-11-13 23:50:22,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:50:22,228 INFO L225 Difference]: With dead ends: 134 [2024-11-13 23:50:22,228 INFO L226 Difference]: Without dead ends: 132 [2024-11-13 23:50:22,229 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 122 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=91, Invalid=505, Unknown=4, NotChecked=0, Total=600 [2024-11-13 23:50:22,230 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 23 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-13 23:50:22,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 222 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-13 23:50:22,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-13 23:50:22,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 79. [2024-11-13 23:50:22,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 77 states have (on average 1.1948051948051948) internal successors, (92), 78 states have internal predecessors, (92), 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) [2024-11-13 23:50:22,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 92 transitions. [2024-11-13 23:50:22,240 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 92 transitions. Word has length 25 [2024-11-13 23:50:22,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:50:22,240 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 92 transitions. [2024-11-13 23:50:22,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.6818181818181817) internal successors, (81), 22 states have internal predecessors, (81), 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) [2024-11-13 23:50:22,241 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 92 transitions. [2024-11-13 23:50:22,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-13 23:50:22,241 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:50:22,241 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:50:22,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2024-11-13 23:50:22,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-13 23:50:22,645 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2024-11-13 23:50:22,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 23:50:22,842 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:50:22,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:50:22,843 INFO L85 PathProgramCache]: Analyzing trace with hash -2013277510, now seen corresponding path program 1 times [2024-11-13 23:50:22,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:50:22,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2093477930] [2024-11-13 23:50:22,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:50:22,843 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 23:50:22,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:50:22,845 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 23:50:22,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2024-11-13 23:50:22,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:50:22,950 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 23:50:22,950 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:50:22,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-13 23:50:23,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-13 23:50:23,083 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 23:50:23,084 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:50:23,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-13 23:50:23,404 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 23:50:23,404 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-13 23:50:23,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2093477930] [2024-11-13 23:50:23,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2093477930] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:50:23,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1044706783] [2024-11-13 23:50:23,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:50:23,405 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 23:50:23,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-13 23:50:23,407 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 23:50:23,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2024-11-13 23:50:23,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:50:23,593 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 23:50:23,593 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:50:23,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-13 23:50:23,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-13 23:50:23,647 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 23:50:23,647 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:50:23,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-13 23:50:23,821 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 23:50:23,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1044706783] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:50:23,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728803882] [2024-11-13 23:50:23,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:50:23,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:50:23,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:50:23,824 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:50:23,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-13 23:50:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:50:23,930 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 23:50:23,931 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:50:23,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-13 23:50:23,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-13 23:50:23,988 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 23:50:23,988 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:50:24,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-13 23:50:24,190 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 23:50:24,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728803882] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:50:24,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-13 23:50:24,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 12 [2024-11-13 23:50:24,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754894355] [2024-11-13 23:50:24,193 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-13 23:50:24,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 23:50:24,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-13 23:50:24,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 23:50:24,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-13 23:50:24,194 INFO L87 Difference]: Start difference. First operand 79 states and 92 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 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) [2024-11-13 23:50:25,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:50:25,378 INFO L93 Difference]: Finished difference Result 185 states and 213 transitions. [2024-11-13 23:50:25,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 23:50:25,378 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 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 [2024-11-13 23:50:25,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:50:25,379 INFO L225 Difference]: With dead ends: 185 [2024-11-13 23:50:25,379 INFO L226 Difference]: Without dead ends: 152 [2024-11-13 23:50:25,380 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 132 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2024-11-13 23:50:25,380 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 42 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 23:50:25,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 165 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 23:50:25,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-13 23:50:25,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 102. [2024-11-13 23:50:25,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 100 states have (on average 1.23) internal successors, (123), 101 states have internal predecessors, (123), 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) [2024-11-13 23:50:25,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 123 transitions. [2024-11-13 23:50:25,391 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 123 transitions. Word has length 25 [2024-11-13 23:50:25,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:50:25,391 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 123 transitions. [2024-11-13 23:50:25,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 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) [2024-11-13 23:50:25,391 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 123 transitions. [2024-11-13 23:50:25,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-13 23:50:25,391 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:50:25,391 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:50:25,405 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-13 23:50:25,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2024-11-13 23:50:25,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2024-11-13 23:50:25,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-13 23:50:25,992 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:50:25,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:50:25,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1694883772, now seen corresponding path program 1 times [2024-11-13 23:50:25,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:50:25,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1172353250] [2024-11-13 23:50:25,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:50:25,993 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 23:50:25,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:50:26,000 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 23:50:26,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2024-11-13 23:50:26,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:50:26,134 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-13 23:50:26,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:50:26,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-13 23:50:26,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 23:50:26,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 23:50:26,365 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2024-11-13 23:50:26,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-13 23:50:26,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 23:50:26,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 32 [2024-11-13 23:50:26,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2024-11-13 23:50:26,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2024-11-13 23:50:27,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 10 [2024-11-13 23:50:27,158 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:50:27,158 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:50:28,995 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:50:28,995 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-13 23:50:28,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1172353250] [2024-11-13 23:50:28,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1172353250] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:50:28,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [585153990] [2024-11-13 23:50:28,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:50:28,995 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 23:50:28,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-13 23:50:28,998 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 23:50:29,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2024-11-13 23:50:29,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:50:29,239 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-13 23:50:29,243 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:50:29,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2024-11-13 23:50:29,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 23:50:29,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:50:29,840 INFO L349 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2024-11-13 23:50:29,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 26 [2024-11-13 23:50:29,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 23:50:29,907 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2024-11-13 23:50:29,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-13 23:50:31,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-13 23:50:31,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-13 23:50:31,237 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 23:50:31,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2024-11-13 23:50:31,247 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:50:31,247 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:50:33,520 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:50:33,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [585153990] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:50:33,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531035722] [2024-11-13 23:50:33,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:50:33,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:50:33,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:50:33,522 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:50:33,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-13 23:50:33,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:50:33,649 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-13 23:50:33,651 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:50:33,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 23:50:33,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 23:50:33,933 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-13 23:50:33,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 23 [2024-11-13 23:50:33,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-13 23:50:33,987 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2024-11-13 23:50:33,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-13 23:50:34,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:50:34,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-13 23:50:34,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2024-11-13 23:50:35,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 10 [2024-11-13 23:50:35,093 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:50:35,093 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:50:35,853 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:50:35,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 50 [2024-11-13 23:50:35,878 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:50:35,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 31 [2024-11-13 23:50:44,181 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:50:44,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531035722] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:50:44,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-13 23:50:44,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12, 12, 9, 9] total 42 [2024-11-13 23:50:44,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139789786] [2024-11-13 23:50:44,182 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-13 23:50:44,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-13 23:50:44,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-13 23:50:44,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-13 23:50:44,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=1488, Unknown=17, NotChecked=0, Total=1722 [2024-11-13 23:50:44,184 INFO L87 Difference]: Start difference. First operand 102 states and 123 transitions. Second operand has 42 states, 42 states have (on average 2.4285714285714284) internal successors, (102), 42 states have internal predecessors, (102), 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) [2024-11-13 23:50:44,675 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~l~0#1.offset|))) (and (forall ((|v_ULTIMATE.start_main_#t~mem6#1_63| (_ BitVec 32)) (|v_ULTIMATE.start_main_~l~0#1.base_75| (_ BitVec 32)) (v_ArrVal_630 (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_75|))) (not (bvsgt |c_ULTIMATE.start_main_~min~0#1| |v_ULTIMATE.start_main_#t~mem6#1_63|)) (bvslt |c_ULTIMATE.start_main_~max~0#1| |v_ULTIMATE.start_main_#t~mem6#1_63|) (not (bvslt (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_75| (store (store (select |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_75|) (_ bv4 32) |v_ULTIMATE.start_main_#t~mem6#1_63|) (_ bv0 32) v_ArrVal_630)) |c_ULTIMATE.start_main_~l~0#1.base|) .cse0) |v_ULTIMATE.start_main_#t~mem6#1_63|)))) (forall ((v_ArrVal_595 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_71| (_ BitVec 32)) (|v_ULTIMATE.start_main_~l~0#1.offset_71| (_ BitVec 32))) (let ((.cse1 (select v_ArrVal_595 (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~l~0#1.offset_71|)))) (or (bvslt |c_ULTIMATE.start_main_~max~0#1| .cse1) (not (bvsgt |c_ULTIMATE.start_main_~min~0#1| .cse1)) (not (bvslt (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_71| v_ArrVal_595) |c_ULTIMATE.start_main_~l~0#1.base|) .cse0) .cse1)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_71|)))))))) is different from false [2024-11-13 23:50:57,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 23:51:01,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 23:51:07,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 23:51:10,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 23:51:13,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 23:51:16,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:51:16,432 INFO L93 Difference]: Finished difference Result 278 states and 336 transitions. [2024-11-13 23:51:16,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-13 23:51:16,433 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.4285714285714284) internal successors, (102), 42 states have internal predecessors, (102), 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 [2024-11-13 23:51:16,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:51:16,435 INFO L225 Difference]: With dead ends: 278 [2024-11-13 23:51:16,435 INFO L226 Difference]: Without dead ends: 276 [2024-11-13 23:51:16,436 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1143 ImplicationChecksByTransitivity, 31.2s TimeCoverageRelationStatistics Valid=639, Invalid=3628, Unknown=27, NotChecked=128, Total=4422 [2024-11-13 23:51:16,437 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 91 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 21 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 152 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2024-11-13 23:51:16,437 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 409 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 808 Invalid, 13 Unknown, 152 Unchecked, 15.7s Time] [2024-11-13 23:51:16,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-11-13 23:51:16,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 154. [2024-11-13 23:51:16,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 152 states have (on average 1.3026315789473684) internal successors, (198), 153 states have internal predecessors, (198), 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) [2024-11-13 23:51:16,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 198 transitions. [2024-11-13 23:51:16,458 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 198 transitions. Word has length 25 [2024-11-13 23:51:16,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:51:16,458 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 198 transitions. [2024-11-13 23:51:16,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.4285714285714284) internal successors, (102), 42 states have internal predecessors, (102), 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) [2024-11-13 23:51:16,459 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 198 transitions. [2024-11-13 23:51:16,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-13 23:51:16,459 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:51:16,460 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:51:16,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2024-11-13 23:51:16,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-13 23:51:16,862 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (29)] Ended with exit code 0 [2024-11-13 23:51:17,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-13 23:51:17,061 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:51:17,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:51:17,061 INFO L85 PathProgramCache]: Analyzing trace with hash 682341022, now seen corresponding path program 1 times [2024-11-13 23:51:17,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:51:17,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1004831612] [2024-11-13 23:51:17,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:51:17,061 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 23:51:17,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:51:17,063 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 23:51:17,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2024-11-13 23:51:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:51:17,198 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-13 23:51:17,200 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:51:17,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 23:51:17,683 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-13 23:51:17,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 51 [2024-11-13 23:51:17,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 10 [2024-11-13 23:51:17,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 23:51:17,804 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2024-11-13 23:51:17,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-13 23:51:17,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 23:51:18,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 40 [2024-11-13 23:51:18,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 28 [2024-11-13 23:51:18,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 13 [2024-11-13 23:51:19,094 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:51:19,094 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:51:21,693 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:51:21,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 61 [2024-11-13 23:51:21,729 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:51:21,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 34 [2024-11-13 23:51:24,577 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:51:24,577 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-13 23:51:24,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1004831612] [2024-11-13 23:51:24,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1004831612] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:51:24,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [49017367] [2024-11-13 23:51:24,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:51:24,577 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 23:51:24,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-13 23:51:24,579 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 23:51:24,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2024-11-13 23:51:24,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:51:24,815 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-13 23:51:24,817 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:51:24,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 23:51:24,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2024-11-13 23:51:25,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:51:25,421 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2024-11-13 23:51:25,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-13 23:51:25,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 23:51:25,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 20 [2024-11-13 23:51:26,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-13 23:51:26,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-13 23:51:27,098 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 23:51:27,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2024-11-13 23:51:27,265 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:51:27,265 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:51:27,482 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_729 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_87| (_ BitVec 32))) (let ((.cse0 (select v_ArrVal_729 (_ bv4 32)))) (or (not (bvsgt (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_87| v_ArrVal_729) |c_ULTIMATE.start_main_~l~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~l~0#1.offset|)) .cse0)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_87|))) (not (bvslt |c_ULTIMATE.start_main_~max~0#1| .cse0)) (bvsgt |c_ULTIMATE.start_main_~min~0#1| .cse0)))) is different from false [2024-11-13 23:51:27,634 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_729 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_87| (_ BitVec 32))) (let ((.cse0 (select v_ArrVal_729 (_ bv4 32)))) (or (not (bvsgt (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_87| v_ArrVal_729) |c_ULTIMATE.start_main_~l~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~l~0#1.offset|)) .cse0)) (not (bvslt (select (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~p~0#1.offset|)) .cse0)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_87|))) (bvsgt |c_ULTIMATE.start_main_~min~0#1| .cse0)))) is different from false [2024-11-13 23:51:30,224 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2024-11-13 23:51:30,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [49017367] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:51:30,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912507517] [2024-11-13 23:51:30,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:51:30,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:51:30,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:51:30,226 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:51:30,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-13 23:51:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:51:30,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 23:51:30,392 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:51:30,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-13 23:51:30,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 23:51:30,580 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2024-11-13 23:51:30,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-13 23:51:30,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 20 [2024-11-13 23:51:30,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:51:30,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 23:51:32,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2024-11-13 23:51:32,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-13 23:51:32,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 10 [2024-11-13 23:51:32,480 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:51:32,480 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:51:32,679 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_760 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.offset_91| (_ BitVec 32)) (|v_ULTIMATE.start_main_~l~0#1.base_91| (_ BitVec 32))) (let ((.cse0 (select v_ArrVal_760 (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~l~0#1.offset_91|)))) (or (bvsgt |c_ULTIMATE.start_main_~min~0#1| .cse0) (not (bvsgt (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_91| v_ArrVal_760) |c_ULTIMATE.start_main_~l~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~l~0#1.offset|)) .cse0)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_91|))) (not (bvslt |c_ULTIMATE.start_main_~max~0#1| .cse0))))) is different from false [2024-11-13 23:51:34,399 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2024-11-13 23:51:34,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912507517] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:51:34,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-13 23:51:34,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 12, 12, 12, 12] total 47 [2024-11-13 23:51:34,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717808277] [2024-11-13 23:51:34,400 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-13 23:51:34,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-13 23:51:34,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-13 23:51:34,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-13 23:51:34,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1665, Unknown=24, NotChecked=258, Total=2162 [2024-11-13 23:51:34,403 INFO L87 Difference]: Start difference. First operand 154 states and 198 transitions. Second operand has 47 states, 47 states have (on average 2.234042553191489) internal successors, (105), 47 states have internal predecessors, (105), 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) [2024-11-13 23:51:39,906 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~l~0#1.offset|))) (and (forall ((v_ArrVal_693 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_83| (_ BitVec 32)) (|v_ULTIMATE.start_main_~l~0#1.offset_83| (_ BitVec 32))) (let ((.cse0 (select v_ArrVal_693 (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~l~0#1.offset_83|)))) (or (bvsgt |c_ULTIMATE.start_main_~min~0#1| .cse0) (not (bvsgt (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_83| v_ArrVal_693) |c_ULTIMATE.start_main_~l~0#1.base|) .cse1) .cse0)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_83|))) (not (bvslt |c_ULTIMATE.start_main_~max~0#1| .cse0))))) (forall ((v_ArrVal_760 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.offset_91| (_ BitVec 32)) (|v_ULTIMATE.start_main_~l~0#1.base_91| (_ BitVec 32))) (let ((.cse2 (select v_ArrVal_760 (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~l~0#1.offset_91|)))) (or (bvsgt |c_ULTIMATE.start_main_~min~0#1| .cse2) (not (bvsgt (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_91| v_ArrVal_760) |c_ULTIMATE.start_main_~l~0#1.base|) .cse1) .cse2)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_91|))) (not (bvslt |c_ULTIMATE.start_main_~max~0#1| .cse2))))) (not (bvsgt (select (select |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) |c_ULTIMATE.start_main_~max~0#1|)))) is different from false [2024-11-13 23:51:42,752 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~l~0#1.base|))) (let ((.cse3 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse8 (select .cse0 |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse7 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~l~0#1.base|)) (.cse9 (select |c_#memory_int| |c_ULTIMATE.start_main_~l~0#1.base|))) (let ((.cse1 (select .cse9 (_ bv4 32))) (.cse4 (select (select |c_#memory_int| .cse8) (bvadd (_ bv4 32) (select .cse7 |c_ULTIMATE.start_main_~l~0#1.offset|)))) (.cse5 (select .cse9 .cse3))) (and (bvslt (select (select |c_#memory_int| (select .cse0 (_ bv0 32))) (_ bv4 32)) .cse1) (forall ((v_ArrVal_693 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_83| (_ BitVec 32)) (|v_ULTIMATE.start_main_~l~0#1.offset_83| (_ BitVec 32))) (let ((.cse2 (select v_ArrVal_693 (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~l~0#1.offset_83|)))) (or (bvsgt |c_ULTIMATE.start_main_~min~0#1| .cse2) (not (bvsgt (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_83| v_ArrVal_693) |c_ULTIMATE.start_main_~l~0#1.base|) .cse3) .cse2)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_83|))) (not (bvslt |c_ULTIMATE.start_main_~max~0#1| .cse2))))) (= |c_ULTIMATE.start_main_~max~0#1| .cse1) (bvslt (_ bv2147483649 32) .cse4) (bvslt .cse4 .cse5) (forall ((v_ArrVal_760 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.offset_91| (_ BitVec 32)) (|v_ULTIMATE.start_main_~l~0#1.base_91| (_ BitVec 32))) (let ((.cse6 (select v_ArrVal_760 (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~l~0#1.offset_91|)))) (or (bvsgt |c_ULTIMATE.start_main_~min~0#1| .cse6) (not (bvsgt (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_91| v_ArrVal_760) |c_ULTIMATE.start_main_~l~0#1.base|) .cse3) .cse6)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_91|))) (not (bvslt |c_ULTIMATE.start_main_~max~0#1| .cse6))))) (= (_ bv0 32) (select .cse7 (_ bv0 32))) (not (= .cse8 |c_ULTIMATE.start_main_~l~0#1.base|)) (= (_ bv0 32) |c_ULTIMATE.start_main_~l~0#1.offset|) (= .cse5 |c_ULTIMATE.start_main_~max~0#1|))))) is different from false [2024-11-13 23:51:43,405 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~l~0#1.offset|))) (and (forall ((v_ArrVal_693 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_83| (_ BitVec 32)) (|v_ULTIMATE.start_main_~l~0#1.offset_83| (_ BitVec 32))) (let ((.cse0 (select v_ArrVal_693 (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~l~0#1.offset_83|)))) (or (bvsgt |c_ULTIMATE.start_main_~min~0#1| .cse0) (not (bvsgt (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_83| v_ArrVal_693) |c_ULTIMATE.start_main_~l~0#1.base|) .cse1) .cse0)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_83|))) (not (bvslt |c_ULTIMATE.start_main_~max~0#1| .cse0))))) (forall ((v_ArrVal_760 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.offset_91| (_ BitVec 32)) (|v_ULTIMATE.start_main_~l~0#1.base_91| (_ BitVec 32))) (let ((.cse2 (select v_ArrVal_760 (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~l~0#1.offset_91|)))) (or (bvsgt |c_ULTIMATE.start_main_~min~0#1| .cse2) (not (bvslt (select (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~p~0#1.offset|)) .cse2)) (not (bvsgt (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_91| v_ArrVal_760) |c_ULTIMATE.start_main_~l~0#1.base|) .cse1) .cse2)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_91|)))))))) is different from false [2024-11-13 23:51:44,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 23:51:44,902 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_693 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_83| (_ BitVec 32)) (|v_ULTIMATE.start_main_~l~0#1.offset_83| (_ BitVec 32))) (let ((.cse0 (select v_ArrVal_693 (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~l~0#1.offset_83|)))) (or (bvsgt |c_ULTIMATE.start_main_~min~0#1| .cse0) (not (bvsgt (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_83| v_ArrVal_693) |c_ULTIMATE.start_main_~l~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~l~0#1.offset|)) .cse0)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_83|))) (not (bvslt |c_ULTIMATE.start_main_~max~0#1| .cse0))))) (not (bvsgt (select (select |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) |c_ULTIMATE.start_main_~max~0#1|))) is different from false [2024-11-13 23:51:44,956 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~l~0#1.offset|))) (and (forall ((v_ArrVal_693 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_83| (_ BitVec 32)) (|v_ULTIMATE.start_main_~l~0#1.offset_83| (_ BitVec 32))) (let ((.cse0 (select v_ArrVal_693 (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~l~0#1.offset_83|)))) (or (bvsgt |c_ULTIMATE.start_main_~min~0#1| .cse0) (not (bvsgt (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_83| v_ArrVal_693) |c_ULTIMATE.start_main_~l~0#1.base|) .cse1) .cse0)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_83|))) (not (bvslt |c_ULTIMATE.start_main_~max~0#1| .cse0))))) (not (bvsgt (select (select |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) |c_ULTIMATE.start_main_~max~0#1|)) (forall ((v_ArrVal_760 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.offset_91| (_ BitVec 32)) (|v_ULTIMATE.start_main_~l~0#1.base_91| (_ BitVec 32))) (let ((.cse2 (select v_ArrVal_760 (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~l~0#1.offset_91|)))) (or (bvsgt |c_ULTIMATE.start_main_~min~0#1| .cse2) (not (bvslt (select (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~p~0#1.offset|)) .cse2)) (not (bvsgt (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_91| v_ArrVal_760) |c_ULTIMATE.start_main_~l~0#1.base|) .cse1) .cse2)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_91|)))))))) is different from false [2024-11-13 23:51:48,511 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~l~0#1.offset|))) (and (forall ((v_ArrVal_693 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_83| (_ BitVec 32)) (|v_ULTIMATE.start_main_~l~0#1.offset_83| (_ BitVec 32))) (let ((.cse0 (select v_ArrVal_693 (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~l~0#1.offset_83|)))) (or (bvsgt |c_ULTIMATE.start_main_~min~0#1| .cse0) (not (bvsgt (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_83| v_ArrVal_693) |c_ULTIMATE.start_main_~l~0#1.base|) .cse1) .cse0)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_83|))) (not (bvslt |c_ULTIMATE.start_main_~max~0#1| .cse0))))) (forall ((v_ArrVal_760 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.offset_91| (_ BitVec 32)) (|v_ULTIMATE.start_main_~l~0#1.base_91| (_ BitVec 32))) (let ((.cse2 (select v_ArrVal_760 (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~l~0#1.offset_91|)))) (or (bvsgt |c_ULTIMATE.start_main_~min~0#1| .cse2) (not (bvsgt (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_91| v_ArrVal_760) |c_ULTIMATE.start_main_~l~0#1.base|) .cse1) .cse2)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_91|))) (not (bvslt |c_ULTIMATE.start_main_~max~0#1| .cse2))))))) is different from false [2024-11-13 23:51:50,707 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~l~0#1.base|) (_ bv4 32))) (.cse2 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~l~0#1.offset|))) (and (bvslt (select (select |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~l~0#1.base|) (_ bv0 32))) (_ bv4 32)) .cse0) (forall ((v_ArrVal_693 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_83| (_ BitVec 32)) (|v_ULTIMATE.start_main_~l~0#1.offset_83| (_ BitVec 32))) (let ((.cse1 (select v_ArrVal_693 (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~l~0#1.offset_83|)))) (or (bvsgt |c_ULTIMATE.start_main_~min~0#1| .cse1) (not (bvsgt (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_83| v_ArrVal_693) |c_ULTIMATE.start_main_~l~0#1.base|) .cse2) .cse1)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_83|))) (not (bvslt |c_ULTIMATE.start_main_~max~0#1| .cse1))))) (= |c_ULTIMATE.start_main_~max~0#1| .cse0) (forall ((v_ArrVal_760 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.offset_91| (_ BitVec 32)) (|v_ULTIMATE.start_main_~l~0#1.base_91| (_ BitVec 32))) (let ((.cse3 (select v_ArrVal_760 (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~l~0#1.offset_91|)))) (or (bvsgt |c_ULTIMATE.start_main_~min~0#1| .cse3) (not (bvsgt (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_91| v_ArrVal_760) |c_ULTIMATE.start_main_~l~0#1.base|) .cse2) .cse3)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_91|))) (not (bvslt |c_ULTIMATE.start_main_~max~0#1| .cse3))))) (= (_ bv0 32) (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~l~0#1.base|) (_ bv0 32))) (= (_ bv0 32) |c_ULTIMATE.start_main_~l~0#1.offset|))) is different from false [2024-11-13 23:51:51,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:51:51,583 INFO L93 Difference]: Finished difference Result 298 states and 372 transitions. [2024-11-13 23:51:51,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-13 23:51:51,584 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.234042553191489) internal successors, (105), 47 states have internal predecessors, (105), 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 27 [2024-11-13 23:51:51,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:51:51,585 INFO L225 Difference]: With dead ends: 298 [2024-11-13 23:51:51,585 INFO L226 Difference]: Without dead ends: 296 [2024-11-13 23:51:51,587 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 82 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 1662 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=661, Invalid=4736, Unknown=45, NotChecked=1530, Total=6972 [2024-11-13 23:51:51,588 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 92 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 9 mSolverCounterUnsat, 116 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 2345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 116 IncrementalHoareTripleChecker+Unknown, 1211 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2024-11-13 23:51:51,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 464 Invalid, 2345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1009 Invalid, 116 Unknown, 1211 Unchecked, 11.0s Time] [2024-11-13 23:51:51,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2024-11-13 23:51:51,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 185. [2024-11-13 23:51:51,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 183 states have (on average 1.3060109289617485) internal successors, (239), 184 states have internal predecessors, (239), 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) [2024-11-13 23:51:51,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 239 transitions. [2024-11-13 23:51:51,611 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 239 transitions. Word has length 27 [2024-11-13 23:51:51,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:51:51,612 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 239 transitions. [2024-11-13 23:51:51,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.234042553191489) internal successors, (105), 47 states have internal predecessors, (105), 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) [2024-11-13 23:51:51,612 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 239 transitions. [2024-11-13 23:51:51,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-13 23:51:51,612 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:51:51,612 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:51:51,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (32)] Forceful destruction successful, exit code 0 [2024-11-13 23:51:51,816 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Ended with exit code 0 [2024-11-13 23:51:52,026 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-13 23:51:52,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:51:52,214 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:51:52,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:51:52,214 INFO L85 PathProgramCache]: Analyzing trace with hash -174820830, now seen corresponding path program 1 times [2024-11-13 23:51:52,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:51:52,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1329948934] [2024-11-13 23:51:52,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:51:52,214 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 23:51:52,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:51:52,217 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 23:51:52,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2024-11-13 23:51:52,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:51:52,374 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-13 23:51:52,377 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:51:52,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 23:51:52,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 23:51:52,681 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-13 23:51:52,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 30 [2024-11-13 23:51:52,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2024-11-13 23:51:52,732 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2024-11-13 23:51:52,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-13 23:51:52,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 23:51:53,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2024-11-13 23:51:53,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2024-11-13 23:51:53,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2024-11-13 23:51:53,236 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:51:53,236 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:51:53,777 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:51:53,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2024-11-13 23:51:53,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2024-11-13 23:51:54,034 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:51:54,034 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-13 23:51:54,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1329948934] [2024-11-13 23:51:54,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1329948934] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:51:54,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1555090670] [2024-11-13 23:51:54,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:51:54,034 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 23:51:54,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-13 23:51:54,036 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 23:51:54,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2024-11-13 23:51:54,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:51:54,254 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-13 23:51:54,256 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:51:54,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2024-11-13 23:51:54,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 23:51:54,673 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2024-11-13 23:51:54,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-13 23:51:54,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 23:51:54,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2024-11-13 23:51:54,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:51:55,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2024-11-13 23:51:55,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-13 23:51:55,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-13 23:51:55,390 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:51:55,390 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:51:57,816 INFO L349 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2024-11-13 23:51:57,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 1 [2024-11-13 23:51:57,817 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:51:57,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1555090670] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:51:57,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408211263] [2024-11-13 23:51:57,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:51:57,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:51:57,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:51:57,819 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:51:57,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-13 23:51:57,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:51:57,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-13 23:51:57,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:51:57,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 23:51:58,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:51:58,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 23:51:58,157 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-13 23:51:58,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 24 [2024-11-13 23:51:58,198 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2024-11-13 23:51:58,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-13 23:51:58,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2024-11-13 23:51:58,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-13 23:51:58,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-13 23:51:58,760 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:51:58,760 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:51:59,102 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:51:59,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2024-11-13 23:51:59,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2024-11-13 23:51:59,362 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:51:59,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408211263] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:51:59,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-13 23:51:59,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10, 9, 10, 9] total 26 [2024-11-13 23:51:59,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690081012] [2024-11-13 23:51:59,363 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-13 23:51:59,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 23:51:59,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-13 23:51:59,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 23:51:59,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=552, Unknown=1, NotChecked=0, Total=650 [2024-11-13 23:51:59,364 INFO L87 Difference]: Start difference. First operand 185 states and 239 transitions. Second operand has 26 states, 26 states have (on average 3.4615384615384617) internal successors, (90), 26 states have internal predecessors, (90), 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) [2024-11-13 23:52:04,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 23:52:06,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 23:52:08,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 23:52:13,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 23:52:15,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 23:52:17,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 23:52:18,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:52:18,884 INFO L93 Difference]: Finished difference Result 328 states and 412 transitions. [2024-11-13 23:52:18,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-13 23:52:18,885 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.4615384615384617) internal successors, (90), 26 states have internal predecessors, (90), 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 27 [2024-11-13 23:52:18,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:52:18,886 INFO L225 Difference]: With dead ends: 328 [2024-11-13 23:52:18,886 INFO L226 Difference]: Without dead ends: 326 [2024-11-13 23:52:18,887 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 131 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=286, Invalid=1515, Unknown=5, NotChecked=0, Total=1806 [2024-11-13 23:52:18,888 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 47 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 4 mSolverCounterUnsat, 59 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 59 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2024-11-13 23:52:18,888 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 355 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 392 Invalid, 59 Unknown, 0 Unchecked, 17.5s Time] [2024-11-13 23:52:18,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2024-11-13 23:52:18,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 245. [2024-11-13 23:52:18,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 243 states have (on average 1.3292181069958848) internal successors, (323), 244 states have internal predecessors, (323), 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) [2024-11-13 23:52:18,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 323 transitions. [2024-11-13 23:52:18,948 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 323 transitions. Word has length 27 [2024-11-13 23:52:18,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:52:18,949 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 323 transitions. [2024-11-13 23:52:18,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.4615384615384617) internal successors, (90), 26 states have internal predecessors, (90), 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) [2024-11-13 23:52:18,949 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 323 transitions. [2024-11-13 23:52:18,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-13 23:52:18,951 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:52:18,951 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:52:18,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2024-11-13 23:52:19,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-13 23:52:19,355 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (35)] Ended with exit code 0 [2024-11-13 23:52:19,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-13 23:52:19,552 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:52:19,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:52:19,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1907916515, now seen corresponding path program 2 times [2024-11-13 23:52:19,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:52:19,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1072767188] [2024-11-13 23:52:19,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 23:52:19,553 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 23:52:19,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:52:19,558 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 23:52:19,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2024-11-13 23:52:19,759 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 23:52:19,759 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 23:52:19,762 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-13 23:52:19,765 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:52:19,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:52:19,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 23:52:19,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:52:19,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2024-11-13 23:52:19,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2024-11-13 23:52:20,001 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-13 23:52:20,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 27 [2024-11-13 23:52:20,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 23:52:20,076 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-13 23:52:20,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 27 [2024-11-13 23:52:20,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 23:52:20,122 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2024-11-13 23:52:20,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-13 23:52:20,680 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:52:20,680 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:52:21,235 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:52:21,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 31 [2024-11-13 23:52:21,251 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:52:21,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 28 [2024-11-13 23:52:21,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2024-11-13 23:52:21,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2024-11-13 23:52:21,893 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:52:21,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2024-11-13 23:52:21,898 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:52:21,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2024-11-13 23:52:21,927 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:52:21,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2024-11-13 23:52:21,933 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:52:21,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2024-11-13 23:52:21,954 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:52:21,955 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-13 23:52:21,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1072767188] [2024-11-13 23:52:21,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1072767188] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:52:21,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [773757305] [2024-11-13 23:52:21,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 23:52:21,955 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 23:52:21,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-13 23:52:21,957 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 23:52:21,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2024-11-13 23:52:22,253 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 23:52:22,253 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 23:52:22,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 23:52:22,259 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:52:22,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 23:52:22,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:52:22,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:52:22,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2024-11-13 23:52:22,567 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2024-11-13 23:52:22,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-13 23:52:22,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-13 23:52:22,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2024-11-13 23:52:22,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-13 23:52:23,520 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:52:23,521 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:52:23,757 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:52:23,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 31 [2024-11-13 23:52:23,774 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:52:23,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 28 [2024-11-13 23:52:23,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2024-11-13 23:52:23,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2024-11-13 23:52:29,557 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:52:29,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2024-11-13 23:52:29,566 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:52:29,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2024-11-13 23:52:29,614 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:52:29,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2024-11-13 23:52:29,626 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:52:29,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-13 23:52:29,696 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:52:29,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [773757305] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:52:29,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322516700] [2024-11-13 23:52:29,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 23:52:29,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:52:29,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:52:29,699 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:52:29,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-13 23:52:29,854 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 23:52:29,854 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 23:52:29,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-13 23:52:29,859 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:52:29,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:52:29,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:52:29,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 23:52:30,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2024-11-13 23:52:30,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2024-11-13 23:52:30,314 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-13 23:52:30,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 27 [2024-11-13 23:52:30,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 23:52:30,481 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-13 23:52:30,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 27 [2024-11-13 23:52:30,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 23:52:30,584 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2024-11-13 23:52:30,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-13 23:52:31,425 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:52:31,426 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:52:31,861 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:52:31,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 31 [2024-11-13 23:52:31,888 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:52:31,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 28 [2024-11-13 23:52:31,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2024-11-13 23:52:31,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2024-11-13 23:52:32,859 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:52:32,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2024-11-13 23:52:32,873 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:52:32,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2024-11-13 23:52:32,941 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:52:32,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2024-11-13 23:52:32,955 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:52:32,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2024-11-13 23:52:33,017 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:52:33,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322516700] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:52:33,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-13 23:52:33,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 17 [2024-11-13 23:52:33,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928036485] [2024-11-13 23:52:33,018 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-13 23:52:33,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 23:52:33,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-13 23:52:33,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 23:52:33,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=222, Unknown=4, NotChecked=0, Total=272 [2024-11-13 23:52:33,020 INFO L87 Difference]: Start difference. First operand 245 states and 323 transitions. Second operand has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 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) [2024-11-13 23:52:34,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:52:34,618 INFO L93 Difference]: Finished difference Result 325 states and 419 transitions. [2024-11-13 23:52:34,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 23:52:34,619 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 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 30 [2024-11-13 23:52:34,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:52:34,620 INFO L225 Difference]: With dead ends: 325 [2024-11-13 23:52:34,620 INFO L226 Difference]: Without dead ends: 287 [2024-11-13 23:52:34,621 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 157 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=46, Invalid=222, Unknown=4, NotChecked=0, Total=272 [2024-11-13 23:52:34,621 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 12 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-13 23:52:34,621 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 242 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-13 23:52:34,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2024-11-13 23:52:34,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2024-11-13 23:52:34,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 285 states have (on average 1.3017543859649123) internal successors, (371), 286 states have internal predecessors, (371), 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) [2024-11-13 23:52:34,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 371 transitions. [2024-11-13 23:52:34,676 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 371 transitions. Word has length 30 [2024-11-13 23:52:34,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:52:34,677 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 371 transitions. [2024-11-13 23:52:34,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 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) [2024-11-13 23:52:34,677 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 371 transitions. [2024-11-13 23:52:34,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-13 23:52:34,678 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:52:34,678 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:52:34,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (38)] Ended with exit code 0 [2024-11-13 23:52:34,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Ended with exit code 0 [2024-11-13 23:52:35,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-11-13 23:52:35,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:52:35,279 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:52:35,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:52:35,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1637016277, now seen corresponding path program 1 times [2024-11-13 23:52:35,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:52:35,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [325041885] [2024-11-13 23:52:35,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:52:35,280 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 23:52:35,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:52:35,283 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 23:52:35,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2024-11-13 23:52:35,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:52:35,538 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-13 23:52:35,540 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:52:35,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 23:52:35,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 23:52:35,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:52:36,037 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-13 23:52:36,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 23 [2024-11-13 23:52:36,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-13 23:52:36,135 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2024-11-13 23:52:36,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-13 23:52:36,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-13 23:52:36,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-13 23:52:36,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 23:52:36,953 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 23:52:36,953 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:52:37,549 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1004 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_125| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_125|))) (not (bvsgt (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_125| v_ArrVal_1004) |c_ULTIMATE.start_main_~l~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~l~0#1.offset|)) |c_ULTIMATE.start_main_~max~0#1|)))) is different from false [2024-11-13 23:52:37,673 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:52:37,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 34 [2024-11-13 23:52:37,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2024-11-13 23:52:38,096 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 3 not checked. [2024-11-13 23:52:38,096 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-13 23:52:38,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [325041885] [2024-11-13 23:52:38,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [325041885] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:52:38,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [404153250] [2024-11-13 23:52:38,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:52:38,096 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 23:52:38,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-13 23:52:38,098 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 23:52:38,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2024-11-13 23:52:38,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:52:38,381 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-13 23:52:38,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:52:38,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2024-11-13 23:52:38,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 23:52:38,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 23:52:38,649 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2024-11-13 23:52:38,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-13 23:52:38,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:52:38,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-13 23:52:39,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-13 23:52:39,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-13 23:52:39,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 23:52:39,550 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 23:52:39,550 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:52:42,478 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 23:52:42,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [404153250] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:52:42,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172288406] [2024-11-13 23:52:42,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:52:42,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:52:42,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:52:42,480 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:52:42,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-13 23:52:42,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:52:42,646 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-13 23:52:42,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:52:42,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 23:52:42,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 23:52:42,935 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2024-11-13 23:52:42,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-13 23:52:42,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:52:42,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-13 23:52:43,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-13 23:52:43,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-13 23:52:43,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 23:52:43,546 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 23:52:43,546 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:52:43,743 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~l~0#1.base_133| (_ BitVec 32)) (v_ArrVal_1098 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_133|))) (not (bvsgt (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_133| v_ArrVal_1098) |c_ULTIMATE.start_main_~l~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~l~0#1.offset|)) |c_ULTIMATE.start_main_~max~0#1|)))) is different from false [2024-11-13 23:52:43,845 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:52:43,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 34 [2024-11-13 23:52:43,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2024-11-13 23:52:44,202 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 3 not checked. [2024-11-13 23:52:44,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172288406] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:52:44,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-13 23:52:44,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 19 [2024-11-13 23:52:44,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607557849] [2024-11-13 23:52:44,202 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-13 23:52:44,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 23:52:44,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-13 23:52:44,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 23:52:44,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=223, Unknown=11, NotChecked=62, Total=342 [2024-11-13 23:52:44,203 INFO L87 Difference]: Start difference. First operand 287 states and 371 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:52:46,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:52:46,169 INFO L93 Difference]: Finished difference Result 335 states and 423 transitions. [2024-11-13 23:52:46,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 23:52:46,170 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-13 23:52:46,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:52:46,171 INFO L225 Difference]: With dead ends: 335 [2024-11-13 23:52:46,171 INFO L226 Difference]: Without dead ends: 333 [2024-11-13 23:52:46,171 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 175 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=60, Invalid=279, Unknown=11, NotChecked=70, Total=420 [2024-11-13 23:52:46,172 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 6 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-13 23:52:46,172 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 216 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 273 Invalid, 0 Unknown, 70 Unchecked, 1.7s Time] [2024-11-13 23:52:46,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2024-11-13 23:52:46,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 259. [2024-11-13 23:52:46,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 257 states have (on average 1.2918287937743191) internal successors, (332), 258 states have internal predecessors, (332), 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) [2024-11-13 23:52:46,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 332 transitions. [2024-11-13 23:52:46,216 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 332 transitions. Word has length 33 [2024-11-13 23:52:46,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:52:46,217 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 332 transitions. [2024-11-13 23:52:46,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:52:46,217 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 332 transitions. [2024-11-13 23:52:46,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-13 23:52:46,217 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:52:46,218 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:52:46,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Ended with exit code 0 [2024-11-13 23:52:46,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (41)] Ended with exit code 0 [2024-11-13 23:52:46,632 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-11-13 23:52:46,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:52:46,818 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:52:46,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:52:46,819 INFO L85 PathProgramCache]: Analyzing trace with hash 2133488595, now seen corresponding path program 2 times [2024-11-13 23:52:46,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:52:46,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [455577050] [2024-11-13 23:52:46,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 23:52:46,819 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 23:52:46,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:52:46,821 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 23:52:46,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2024-11-13 23:52:46,984 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 23:52:46,984 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 23:52:46,987 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 23:52:46,988 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:52:47,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-13 23:52:47,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-13 23:52:47,456 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 23:52:47,456 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:52:47,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2024-11-13 23:52:47,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2024-11-13 23:52:48,021 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 23:52:48,021 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-13 23:52:48,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [455577050] [2024-11-13 23:52:48,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [455577050] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:52:48,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1887341862] [2024-11-13 23:52:48,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 23:52:48,021 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 23:52:48,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-13 23:52:48,023 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 23:52:48,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (44)] Waiting until timeout for monitored process [2024-11-13 23:52:48,289 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 23:52:48,289 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 23:52:48,291 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 23:52:48,292 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:52:48,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-13 23:52:48,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-13 23:52:48,496 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 23:52:48,496 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:52:48,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2024-11-13 23:52:48,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2024-11-13 23:52:48,774 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 23:52:48,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1887341862] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:52:48,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796120322] [2024-11-13 23:52:48,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 23:52:48,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:52:48,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:52:48,776 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:52:48,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-13 23:52:48,929 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 23:52:48,929 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 23:52:48,931 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 23:52:48,931 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:52:48,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-13 23:52:49,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-13 23:52:49,130 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 23:52:49,130 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:52:49,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2024-11-13 23:52:49,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2024-11-13 23:52:49,430 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 23:52:49,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796120322] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:52:49,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-13 23:52:49,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 13 [2024-11-13 23:52:49,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293363715] [2024-11-13 23:52:49,431 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-13 23:52:49,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 23:52:49,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-13 23:52:49,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 23:52:49,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-13 23:52:49,432 INFO L87 Difference]: Start difference. First operand 259 states and 332 transitions. Second operand has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:52:51,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:52:51,233 INFO L93 Difference]: Finished difference Result 505 states and 640 transitions. [2024-11-13 23:52:51,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 23:52:51,238 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-13 23:52:51,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:52:51,240 INFO L225 Difference]: With dead ends: 505 [2024-11-13 23:52:51,240 INFO L226 Difference]: Without dead ends: 369 [2024-11-13 23:52:51,240 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 175 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2024-11-13 23:52:51,244 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 61 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-13 23:52:51,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 225 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-13 23:52:51,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2024-11-13 23:52:51,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 282. [2024-11-13 23:52:51,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 280 states have (on average 1.2964285714285715) internal successors, (363), 281 states have internal predecessors, (363), 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) [2024-11-13 23:52:51,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 363 transitions. [2024-11-13 23:52:51,295 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 363 transitions. Word has length 33 [2024-11-13 23:52:51,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:52:51,295 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 363 transitions. [2024-11-13 23:52:51,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:52:51,295 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 363 transitions. [2024-11-13 23:52:51,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 23:52:51,296 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:52:51,296 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:52:51,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (44)] Ended with exit code 0 [2024-11-13 23:52:51,518 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-11-13 23:52:51,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Ended with exit code 0 [2024-11-13 23:52:51,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 23:52:51,897 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:52:51,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:52:51,897 INFO L85 PathProgramCache]: Analyzing trace with hash -857111988, now seen corresponding path program 3 times [2024-11-13 23:52:51,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:52:51,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [665012596] [2024-11-13 23:52:51,898 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 23:52:51,898 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 23:52:51,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:52:51,899 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 23:52:51,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2024-11-13 23:52:52,150 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-13 23:52:52,150 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 23:52:52,155 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-13 23:52:52,158 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:52:52,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 23:52:52,636 INFO L349 Elim1Store]: treesize reduction 34, result has 37.0 percent of original size [2024-11-13 23:52:52,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 35 [2024-11-13 23:52:52,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:52:52,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 23:52:52,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2024-11-13 23:52:53,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2024-11-13 23:52:53,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2024-11-13 23:52:53,296 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-13 23:52:53,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 27 [2024-11-13 23:52:53,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 23:52:53,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:52:53,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 51 [2024-11-13 23:52:53,472 INFO L349 Elim1Store]: treesize reduction 37, result has 47.1 percent of original size [2024-11-13 23:52:53,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 40 [2024-11-13 23:52:53,612 INFO L349 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2024-11-13 23:52:53,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 38 [2024-11-13 23:52:55,795 INFO L349 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2024-11-13 23:52:55,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 38 [2024-11-13 23:52:55,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:52:55,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-11-13 23:52:56,107 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:52:56,107 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:52:56,870 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:52:56,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 37 [2024-11-13 23:52:56,895 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:52:56,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 34 [2024-11-13 23:52:56,987 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1266 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_150| (_ BitVec 32)) (v_arrayElimArr_21 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_22 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_22 (_ bv0 32)))) (bvsgt |c_ULTIMATE.start_main_~min~0#1| (select v_ArrVal_1266 (_ bv4 32))) (not (bvslt (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_150| v_ArrVal_1266) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_150| v_arrayElimArr_21) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_150| v_arrayElimArr_22) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) |c_ULTIMATE.start_main_~min~0#1|)) (not (= (select v_arrayElimArr_21 (_ bv0 32)) |c_ULTIMATE.start_main_~l~0#1.base|)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_150|))))) is different from false [2024-11-13 23:52:57,357 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:52:57,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 67 [2024-11-13 23:52:57,366 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:52:57,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 48 [2024-11-13 23:52:57,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2024-11-13 23:52:57,407 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:52:57,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2024-11-13 23:52:57,416 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:52:57,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2024-11-13 23:52:57,631 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1266 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_150| (_ BitVec 32)) (v_ArrVal_1258 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_240 (_ BitVec 32))) (or (bvsgt |c_ULTIMATE.start_main_~min~0#1| (select v_ArrVal_1266 (_ bv4 32))) (not (= (_ bv0 1) (select (store |c_#valid| v_arrayElimCell_240 (_ bv1 1)) |v_ULTIMATE.start_main_~l~0#1.base_150|))) (not (bvslt (select (select (store (store |c_#memory_int| v_arrayElimCell_240 v_ArrVal_1258) |v_ULTIMATE.start_main_~l~0#1.base_150| v_ArrVal_1266) |c_ULTIMATE.start_main_~l~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~l~0#1.offset|)) |c_ULTIMATE.start_main_~min~0#1|)) (not (= (_ bv0 1) (select |c_#valid| v_arrayElimCell_240))))) is different from false [2024-11-13 23:53:00,162 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:53:00,164 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:53:00,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-13 23:53:00,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-13 23:53:00,185 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 17 not checked. [2024-11-13 23:53:00,185 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-13 23:53:00,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [665012596] [2024-11-13 23:53:00,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [665012596] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:53:00,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [913135939] [2024-11-13 23:53:00,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 23:53:00,186 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 23:53:00,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-13 23:53:00,187 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 23:53:00,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (47)] Waiting until timeout for monitored process [2024-11-13 23:53:00,534 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-13 23:53:00,534 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 23:53:00,537 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-13 23:53:00,541 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:53:00,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 23:53:00,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2024-11-13 23:53:00,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:53:00,963 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-13 23:53:00,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 24 [2024-11-13 23:53:01,154 INFO L349 Elim1Store]: treesize reduction 34, result has 37.0 percent of original size [2024-11-13 23:53:01,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 35 [2024-11-13 23:53:01,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 23:53:02,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2024-11-13 23:53:02,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:53:02,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 39 [2024-11-13 23:53:02,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2024-11-13 23:53:02,279 INFO L349 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2024-11-13 23:53:02,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 38 [2024-11-13 23:53:02,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 45 [2024-11-13 23:53:02,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 19 [2024-11-13 23:53:07,365 INFO L349 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2024-11-13 23:53:07,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 52 [2024-11-13 23:53:07,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 17 [2024-11-13 23:53:08,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2024-11-13 23:53:08,096 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:53:08,096 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:53:08,382 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:53:08,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 37 [2024-11-13 23:53:08,410 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:53:08,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 34 [2024-11-13 23:53:08,510 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~l~0#1.base_156| (_ BitVec 32)) (v_arrayElimArr_27 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_28 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1317 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select v_ArrVal_1317 (_ bv4 32)))) (or (bvsgt |c_ULTIMATE.start_main_~min~0#1| .cse0) (not (bvslt (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_156| v_ArrVal_1317) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_156| v_arrayElimArr_27) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_156| v_arrayElimArr_28) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) |c_ULTIMATE.start_main_~min~0#1|)) (not (= (select v_arrayElimArr_27 (_ bv0 32)) |c_ULTIMATE.start_main_~l~0#1.base|)) (not (= (store (store (select |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_156|) (_ bv4 32) .cse0) (_ bv0 32) (select v_ArrVal_1317 (_ bv0 32))) v_ArrVal_1317)) (not (= (select v_arrayElimArr_28 (_ bv0 32)) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_156|)))))) is different from false [2024-11-13 23:53:12,698 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:53:12,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 67 [2024-11-13 23:53:12,713 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:53:12,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 48 [2024-11-13 23:53:12,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 70 [2024-11-13 23:53:12,783 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:53:12,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2024-11-13 23:53:12,793 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:53:12,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2024-11-13 23:53:12,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2024-11-13 23:53:14,168 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:53:14,171 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:53:14,181 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:53:14,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2024-11-13 23:53:14,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 1 [2024-11-13 23:53:14,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-13 23:53:14,218 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2024-11-13 23:53:14,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [913135939] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:53:14,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892672213] [2024-11-13 23:53:14,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 23:53:14,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:53:14,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:53:14,220 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:53:14,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-11-13 23:53:14,526 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-13 23:53:14,527 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 23:53:14,530 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-13 23:53:14,533 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:53:14,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 23:53:14,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:53:14,910 INFO L349 Elim1Store]: treesize reduction 34, result has 37.0 percent of original size [2024-11-13 23:53:14,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 35 [2024-11-13 23:53:14,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2024-11-13 23:53:14,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 23:53:15,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2024-11-13 23:53:15,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2024-11-13 23:53:15,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:53:15,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 51 [2024-11-13 23:53:15,557 INFO L349 Elim1Store]: treesize reduction 37, result has 47.1 percent of original size [2024-11-13 23:53:15,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 40 [2024-11-13 23:53:15,696 INFO L349 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2024-11-13 23:53:15,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 38 [2024-11-13 23:53:15,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 19 [2024-11-13 23:53:17,845 INFO L349 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2024-11-13 23:53:17,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 38 [2024-11-13 23:53:17,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:53:18,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-13 23:53:18,134 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:53:18,135 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:53:18,368 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:53:18,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 37 [2024-11-13 23:53:18,396 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:53:18,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 34 [2024-11-13 23:53:18,488 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1370 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_162| (_ BitVec 32)) (|v_ULTIMATE.start_main_~l~0#1.offset_162| (_ BitVec 32)) (v_arrayElimArr_33 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_34 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_34 |v_ULTIMATE.start_main_~l~0#1.offset_162|))) (not (bvslt (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_162| v_ArrVal_1370) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_162| v_arrayElimArr_33) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_162| v_arrayElimArr_34) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) |c_ULTIMATE.start_main_~min~0#1|)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_162|))) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_33 |v_ULTIMATE.start_main_~l~0#1.offset_162|))))) is different from false [2024-11-13 23:53:18,805 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:53:18,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 67 [2024-11-13 23:53:18,813 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:53:18,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 48 [2024-11-13 23:53:18,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2024-11-13 23:53:18,850 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:53:18,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2024-11-13 23:53:18,858 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:53:18,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2024-11-13 23:53:21,958 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:53:21,960 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:53:21,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-13 23:53:21,972 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 12 not checked. [2024-11-13 23:53:21,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892672213] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:53:21,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-13 23:53:21,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 13, 12, 11, 10] total 39 [2024-11-13 23:53:21,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702369565] [2024-11-13 23:53:21,973 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-13 23:53:21,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-13 23:53:21,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-13 23:53:21,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-13 23:53:21,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1020, Unknown=21, NotChecked=276, Total=1482 [2024-11-13 23:53:21,974 INFO L87 Difference]: Start difference. First operand 282 states and 363 transitions. Second operand has 39 states, 39 states have (on average 3.6153846153846154) internal successors, (141), 39 states have internal predecessors, (141), 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) [2024-11-13 23:53:27,542 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse0 (bvsgt |c_ULTIMATE.start_main_~min~0#1| |c_ULTIMATE.start_main_#t~mem6#1|))) (and (or .cse0 (forall ((v_ArrVal_1266 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_150| (_ BitVec 32)) (v_ArrVal_1258 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_240 (_ BitVec 32))) (or (bvsgt |c_ULTIMATE.start_main_~min~0#1| (select v_ArrVal_1266 (_ bv4 32))) (not (= (_ bv0 1) (select (store |c_#valid| v_arrayElimCell_240 (_ bv1 1)) |v_ULTIMATE.start_main_~l~0#1.base_150|))) (not (bvslt (select (select (store (store |c_#memory_int| v_arrayElimCell_240 v_ArrVal_1258) |v_ULTIMATE.start_main_~l~0#1.base_150| v_ArrVal_1266) |c_ULTIMATE.start_main_~l~0#1.base|) .cse1) |c_ULTIMATE.start_main_~min~0#1|)) (not (= (_ bv0 1) (select |c_#valid| v_arrayElimCell_240)))))) (or (forall ((v_ArrVal_1370 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_162| (_ BitVec 32)) (v_arrayElimCell_283 (_ BitVec 32)) (v_ArrVal_1366 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv0 1) (select (store |c_#valid| v_arrayElimCell_283 (_ bv1 1)) |v_ULTIMATE.start_main_~l~0#1.base_162|))) (not (bvslt (select (select (store (store |c_#memory_int| v_arrayElimCell_283 v_ArrVal_1366) |v_ULTIMATE.start_main_~l~0#1.base_162| v_ArrVal_1370) |c_ULTIMATE.start_main_~l~0#1.base|) .cse1) |c_ULTIMATE.start_main_~min~0#1|)) (not (= (_ bv0 1) (select |c_#valid| v_arrayElimCell_283))))) .cse0) (forall ((v_ArrVal_1266 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_150| (_ BitVec 32)) (v_arrayElimArr_21 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_22 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_22 (_ bv0 32)))) (bvsgt |c_ULTIMATE.start_main_~min~0#1| (select v_ArrVal_1266 (_ bv4 32))) (not (bvslt (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_150| v_ArrVal_1266) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_150| v_arrayElimArr_21) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_150| v_arrayElimArr_22) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) |c_ULTIMATE.start_main_~min~0#1|)) (not (= (select v_arrayElimArr_21 (_ bv0 32)) |c_ULTIMATE.start_main_~l~0#1.base|)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_150|))))) (or .cse0 (forall ((|v_ULTIMATE.start_main_~l~0#1.base_156| (_ BitVec 32)) (v_arrayElimArr_27 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_28 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1317 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select v_ArrVal_1317 (_ bv4 32)))) (or (bvsgt |c_ULTIMATE.start_main_~min~0#1| .cse2) (not (bvslt (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_156| v_ArrVal_1317) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_156| v_arrayElimArr_27) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_156| v_arrayElimArr_28) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) |c_ULTIMATE.start_main_~min~0#1|)) (not (= (select v_arrayElimArr_27 (_ bv0 32)) |c_ULTIMATE.start_main_~l~0#1.base|)) (not (= (store (store (select |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_156|) (_ bv4 32) .cse2) (_ bv0 32) (select v_ArrVal_1317 (_ bv0 32))) v_ArrVal_1317)) (not (= (select v_arrayElimArr_28 (_ bv0 32)) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_156|))))))) (forall ((v_ArrVal_1370 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_162| (_ BitVec 32)) (|v_ULTIMATE.start_main_~l~0#1.offset_162| (_ BitVec 32)) (v_arrayElimArr_33 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_34 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_34 |v_ULTIMATE.start_main_~l~0#1.offset_162|))) (not (bvslt (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_162| v_ArrVal_1370) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_162| v_arrayElimArr_33) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_162| v_arrayElimArr_34) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) |c_ULTIMATE.start_main_~min~0#1|)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_162|))) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_33 |v_ULTIMATE.start_main_~l~0#1.offset_162|))))))) is different from false [2024-11-13 23:53:30,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 23:53:33,212 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse2 (forall ((|v_ULTIMATE.start_main_~l~0#1.base_156| (_ BitVec 32)) (v_arrayElimArr_27 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_28 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1317 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select v_ArrVal_1317 (_ bv4 32)))) (or (bvsgt |c_ULTIMATE.start_main_~min~0#1| .cse3) (not (bvslt (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_156| v_ArrVal_1317) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_156| v_arrayElimArr_27) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_156| v_arrayElimArr_28) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) |c_ULTIMATE.start_main_~min~0#1|)) (not (= (select v_arrayElimArr_27 (_ bv0 32)) |c_ULTIMATE.start_main_~l~0#1.base|)) (not (= (store (store (select |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_156|) (_ bv4 32) .cse3) (_ bv0 32) (select v_ArrVal_1317 (_ bv0 32))) v_ArrVal_1317)) (not (= (select v_arrayElimArr_28 (_ bv0 32)) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_156|)))))))) (and (forall ((|v_ULTIMATE.start_main_~l~0#1.base_156| (_ BitVec 32)) (v_ArrVal_1312 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1317 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_262 (_ BitVec 32)) (v_arrayElimCell_264 (_ BitVec 32))) (let ((.cse0 (select v_ArrVal_1317 (_ bv4 32)))) (or (not (= (_ bv0 1) (select |c_#valid| v_arrayElimCell_262))) (bvsgt |c_ULTIMATE.start_main_~min~0#1| .cse0) (bvsgt |c_ULTIMATE.start_main_~min~0#1| (select v_ArrVal_1312 (bvadd v_arrayElimCell_264 (_ bv4 32)))) (not (= (_ bv0 1) (select (store |c_#valid| v_arrayElimCell_262 (_ bv1 1)) |v_ULTIMATE.start_main_~l~0#1.base_156|))) (not (= (store (store (select |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_156|) (_ bv4 32) .cse0) (_ bv0 32) (select v_ArrVal_1317 (_ bv0 32))) v_ArrVal_1317)) (not (bvslt (select (select (store (store |c_#memory_int| v_arrayElimCell_262 v_ArrVal_1312) |v_ULTIMATE.start_main_~l~0#1.base_156| v_ArrVal_1317) |c_ULTIMATE.start_main_~l~0#1.base|) .cse1) |c_ULTIMATE.start_main_~min~0#1|))))) (forall ((v_ArrVal_1370 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_162| (_ BitVec 32)) (v_arrayElimCell_283 (_ BitVec 32)) (v_ArrVal_1366 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv0 1) (select (store |c_#valid| v_arrayElimCell_283 (_ bv1 1)) |v_ULTIMATE.start_main_~l~0#1.base_162|))) (not (bvslt (select (select (store (store |c_#memory_int| v_arrayElimCell_283 v_ArrVal_1366) |v_ULTIMATE.start_main_~l~0#1.base_162| v_ArrVal_1370) |c_ULTIMATE.start_main_~l~0#1.base|) .cse1) |c_ULTIMATE.start_main_~min~0#1|)) (not (= (_ bv0 1) (select |c_#valid| v_arrayElimCell_283))))) .cse2 (forall ((v_ArrVal_1266 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_150| (_ BitVec 32)) (v_arrayElimArr_21 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_22 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_22 (_ bv0 32)))) (bvsgt |c_ULTIMATE.start_main_~min~0#1| (select v_ArrVal_1266 (_ bv4 32))) (not (bvslt (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_150| v_ArrVal_1266) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_150| v_arrayElimArr_21) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_150| v_arrayElimArr_22) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) |c_ULTIMATE.start_main_~min~0#1|)) (not (= (select v_arrayElimArr_21 (_ bv0 32)) |c_ULTIMATE.start_main_~l~0#1.base|)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_150|))))) (or (bvsgt |c_ULTIMATE.start_main_~min~0#1| |c_ULTIMATE.start_main_#t~mem6#1|) .cse2) (forall ((v_ArrVal_1370 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_162| (_ BitVec 32)) (|v_ULTIMATE.start_main_~l~0#1.offset_162| (_ BitVec 32)) (v_arrayElimArr_33 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_34 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_34 |v_ULTIMATE.start_main_~l~0#1.offset_162|))) (not (bvslt (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_162| v_ArrVal_1370) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_162| v_arrayElimArr_33) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_162| v_arrayElimArr_34) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) |c_ULTIMATE.start_main_~min~0#1|)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_162|))) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_33 |v_ULTIMATE.start_main_~l~0#1.offset_162|))))))) is different from false [2024-11-13 23:53:40,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 23:53:42,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 23:53:44,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 23:53:46,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 23:53:47,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 23:53:49,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 23:53:51,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 23:53:51,625 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse0 (bvsgt |c_ULTIMATE.start_main_~min~0#1| |c_ULTIMATE.start_main_#t~mem6#1|))) (and (or .cse0 (forall ((v_ArrVal_1266 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_150| (_ BitVec 32)) (v_ArrVal_1258 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_240 (_ BitVec 32))) (or (bvsgt |c_ULTIMATE.start_main_~min~0#1| (select v_ArrVal_1266 (_ bv4 32))) (not (= (_ bv0 1) (select (store |c_#valid| v_arrayElimCell_240 (_ bv1 1)) |v_ULTIMATE.start_main_~l~0#1.base_150|))) (not (bvslt (select (select (store (store |c_#memory_int| v_arrayElimCell_240 v_ArrVal_1258) |v_ULTIMATE.start_main_~l~0#1.base_150| v_ArrVal_1266) |c_ULTIMATE.start_main_~l~0#1.base|) .cse1) |c_ULTIMATE.start_main_~min~0#1|)) (not (= (_ bv0 1) (select |c_#valid| v_arrayElimCell_240)))))) (not (bvslt (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse3 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (select (select |c_#memory_int| (select (select |c_#memory_$Pointer$.base| .cse2) .cse3)) (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$.offset| .cse2) .cse3)))) |c_ULTIMATE.start_main_~min~0#1|)) (or (forall ((v_ArrVal_1370 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_162| (_ BitVec 32)) (v_arrayElimCell_283 (_ BitVec 32)) (v_ArrVal_1366 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv0 1) (select (store |c_#valid| v_arrayElimCell_283 (_ bv1 1)) |v_ULTIMATE.start_main_~l~0#1.base_162|))) (not (bvslt (select (select (store (store |c_#memory_int| v_arrayElimCell_283 v_ArrVal_1366) |v_ULTIMATE.start_main_~l~0#1.base_162| v_ArrVal_1370) |c_ULTIMATE.start_main_~l~0#1.base|) .cse1) |c_ULTIMATE.start_main_~min~0#1|)) (not (= (_ bv0 1) (select |c_#valid| v_arrayElimCell_283))))) .cse0) (forall ((v_ArrVal_1266 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_150| (_ BitVec 32)) (v_arrayElimArr_21 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_22 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_22 (_ bv0 32)))) (bvsgt |c_ULTIMATE.start_main_~min~0#1| (select v_ArrVal_1266 (_ bv4 32))) (not (bvslt (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_150| v_ArrVal_1266) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_150| v_arrayElimArr_21) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_150| v_arrayElimArr_22) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) |c_ULTIMATE.start_main_~min~0#1|)) (not (= (select v_arrayElimArr_21 (_ bv0 32)) |c_ULTIMATE.start_main_~l~0#1.base|)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_150|))))) (or .cse0 (forall ((|v_ULTIMATE.start_main_~l~0#1.base_156| (_ BitVec 32)) (v_arrayElimArr_27 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_28 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1317 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select v_ArrVal_1317 (_ bv4 32)))) (or (bvsgt |c_ULTIMATE.start_main_~min~0#1| .cse4) (not (bvslt (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_156| v_ArrVal_1317) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_156| v_arrayElimArr_27) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_156| v_arrayElimArr_28) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) |c_ULTIMATE.start_main_~min~0#1|)) (not (= (select v_arrayElimArr_27 (_ bv0 32)) |c_ULTIMATE.start_main_~l~0#1.base|)) (not (= (store (store (select |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_156|) (_ bv4 32) .cse4) (_ bv0 32) (select v_ArrVal_1317 (_ bv0 32))) v_ArrVal_1317)) (not (= (select v_arrayElimArr_28 (_ bv0 32)) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_156|))))))) (forall ((v_ArrVal_1370 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_162| (_ BitVec 32)) (|v_ULTIMATE.start_main_~l~0#1.offset_162| (_ BitVec 32)) (v_arrayElimArr_33 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_34 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_34 |v_ULTIMATE.start_main_~l~0#1.offset_162|))) (not (bvslt (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_162| v_ArrVal_1370) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_162| v_arrayElimArr_33) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_162| v_arrayElimArr_34) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) |c_ULTIMATE.start_main_~min~0#1|)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_162|))) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_33 |v_ULTIMATE.start_main_~l~0#1.offset_162|))))))) is different from false [2024-11-13 23:53:54,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 23:53:56,267 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse2 (forall ((|v_ULTIMATE.start_main_~l~0#1.base_156| (_ BitVec 32)) (v_arrayElimArr_27 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_28 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1317 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select v_ArrVal_1317 (_ bv4 32)))) (or (bvsgt |c_ULTIMATE.start_main_~min~0#1| .cse5) (not (bvslt (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_156| v_ArrVal_1317) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_156| v_arrayElimArr_27) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_156| v_arrayElimArr_28) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) |c_ULTIMATE.start_main_~min~0#1|)) (not (= (select v_arrayElimArr_27 (_ bv0 32)) |c_ULTIMATE.start_main_~l~0#1.base|)) (not (= (store (store (select |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_156|) (_ bv4 32) .cse5) (_ bv0 32) (select v_ArrVal_1317 (_ bv0 32))) v_ArrVal_1317)) (not (= (select v_arrayElimArr_28 (_ bv0 32)) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_156|)))))))) (and (forall ((|v_ULTIMATE.start_main_~l~0#1.base_156| (_ BitVec 32)) (v_ArrVal_1312 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1317 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_262 (_ BitVec 32)) (v_arrayElimCell_264 (_ BitVec 32))) (let ((.cse0 (select v_ArrVal_1317 (_ bv4 32)))) (or (not (= (_ bv0 1) (select |c_#valid| v_arrayElimCell_262))) (bvsgt |c_ULTIMATE.start_main_~min~0#1| .cse0) (bvsgt |c_ULTIMATE.start_main_~min~0#1| (select v_ArrVal_1312 (bvadd v_arrayElimCell_264 (_ bv4 32)))) (not (= (_ bv0 1) (select (store |c_#valid| v_arrayElimCell_262 (_ bv1 1)) |v_ULTIMATE.start_main_~l~0#1.base_156|))) (not (= (store (store (select |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_156|) (_ bv4 32) .cse0) (_ bv0 32) (select v_ArrVal_1317 (_ bv0 32))) v_ArrVal_1317)) (not (bvslt (select (select (store (store |c_#memory_int| v_arrayElimCell_262 v_ArrVal_1312) |v_ULTIMATE.start_main_~l~0#1.base_156| v_ArrVal_1317) |c_ULTIMATE.start_main_~l~0#1.base|) .cse1) |c_ULTIMATE.start_main_~min~0#1|))))) (forall ((v_ArrVal_1370 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_162| (_ BitVec 32)) (v_arrayElimCell_283 (_ BitVec 32)) (v_ArrVal_1366 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv0 1) (select (store |c_#valid| v_arrayElimCell_283 (_ bv1 1)) |v_ULTIMATE.start_main_~l~0#1.base_162|))) (not (bvslt (select (select (store (store |c_#memory_int| v_arrayElimCell_283 v_ArrVal_1366) |v_ULTIMATE.start_main_~l~0#1.base_162| v_ArrVal_1370) |c_ULTIMATE.start_main_~l~0#1.base|) .cse1) |c_ULTIMATE.start_main_~min~0#1|)) (not (= (_ bv0 1) (select |c_#valid| v_arrayElimCell_283))))) .cse2 (not (bvslt (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse4 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (select (select |c_#memory_int| (select (select |c_#memory_$Pointer$.base| .cse3) .cse4)) (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$.offset| .cse3) .cse4)))) |c_ULTIMATE.start_main_~min~0#1|)) (forall ((v_ArrVal_1266 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_150| (_ BitVec 32)) (v_arrayElimArr_21 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_22 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_22 (_ bv0 32)))) (bvsgt |c_ULTIMATE.start_main_~min~0#1| (select v_ArrVal_1266 (_ bv4 32))) (not (bvslt (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_150| v_ArrVal_1266) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_150| v_arrayElimArr_21) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_150| v_arrayElimArr_22) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) |c_ULTIMATE.start_main_~min~0#1|)) (not (= (select v_arrayElimArr_21 (_ bv0 32)) |c_ULTIMATE.start_main_~l~0#1.base|)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_150|))))) (or (bvsgt |c_ULTIMATE.start_main_~min~0#1| |c_ULTIMATE.start_main_#t~mem6#1|) .cse2) (forall ((v_ArrVal_1370 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_162| (_ BitVec 32)) (|v_ULTIMATE.start_main_~l~0#1.offset_162| (_ BitVec 32)) (v_arrayElimArr_33 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_34 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_34 |v_ULTIMATE.start_main_~l~0#1.offset_162|))) (not (bvslt (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_162| v_ArrVal_1370) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_162| v_arrayElimArr_33) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_162| v_arrayElimArr_34) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) |c_ULTIMATE.start_main_~min~0#1|)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_162|))) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_33 |v_ULTIMATE.start_main_~l~0#1.offset_162|))))))) is different from false [2024-11-13 23:54:02,994 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse0 (bvsgt |c_ULTIMATE.start_main_~min~0#1| |c_ULTIMATE.start_main_#t~mem6#1|))) (and (or .cse0 (forall ((v_ArrVal_1266 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_150| (_ BitVec 32)) (v_ArrVal_1258 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_240 (_ BitVec 32))) (or (bvsgt |c_ULTIMATE.start_main_~min~0#1| (select v_ArrVal_1266 (_ bv4 32))) (not (= (_ bv0 1) (select (store |c_#valid| v_arrayElimCell_240 (_ bv1 1)) |v_ULTIMATE.start_main_~l~0#1.base_150|))) (not (bvslt (select (select (store (store |c_#memory_int| v_arrayElimCell_240 v_ArrVal_1258) |v_ULTIMATE.start_main_~l~0#1.base_150| v_ArrVal_1266) |c_ULTIMATE.start_main_~l~0#1.base|) .cse1) |c_ULTIMATE.start_main_~min~0#1|)) (not (= (_ bv0 1) (select |c_#valid| v_arrayElimCell_240)))))) (not (bvslt (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse3 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (select (select |c_#memory_int| (select (select |c_#memory_$Pointer$.base| .cse2) .cse3)) (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$.offset| .cse2) .cse3)))) |c_ULTIMATE.start_main_~min~0#1|)) (or (forall ((v_ArrVal_1370 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_162| (_ BitVec 32)) (v_arrayElimCell_283 (_ BitVec 32)) (v_ArrVal_1366 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv0 1) (select (store |c_#valid| v_arrayElimCell_283 (_ bv1 1)) |v_ULTIMATE.start_main_~l~0#1.base_162|))) (not (bvslt (select (select (store (store |c_#memory_int| v_arrayElimCell_283 v_ArrVal_1366) |v_ULTIMATE.start_main_~l~0#1.base_162| v_ArrVal_1370) |c_ULTIMATE.start_main_~l~0#1.base|) .cse1) |c_ULTIMATE.start_main_~min~0#1|)) (not (= (_ bv0 1) (select |c_#valid| v_arrayElimCell_283))))) .cse0) (or .cse0 (forall ((|v_ULTIMATE.start_main_~l~0#1.base_156| (_ BitVec 32)) (v_arrayElimArr_27 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_28 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1317 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select v_ArrVal_1317 (_ bv4 32)))) (or (bvsgt |c_ULTIMATE.start_main_~min~0#1| .cse4) (not (bvslt (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_156| v_ArrVal_1317) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_156| v_arrayElimArr_27) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_156| v_arrayElimArr_28) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) |c_ULTIMATE.start_main_~min~0#1|)) (not (= (select v_arrayElimArr_27 (_ bv0 32)) |c_ULTIMATE.start_main_~l~0#1.base|)) (not (= (store (store (select |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_156|) (_ bv4 32) .cse4) (_ bv0 32) (select v_ArrVal_1317 (_ bv0 32))) v_ArrVal_1317)) (not (= (select v_arrayElimArr_28 (_ bv0 32)) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_156|))))))) (forall ((v_ArrVal_1370 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_162| (_ BitVec 32)) (|v_ULTIMATE.start_main_~l~0#1.offset_162| (_ BitVec 32)) (v_arrayElimArr_33 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_34 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_34 |v_ULTIMATE.start_main_~l~0#1.offset_162|))) (not (bvslt (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_162| v_ArrVal_1370) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_162| v_arrayElimArr_33) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_162| v_arrayElimArr_34) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) |c_ULTIMATE.start_main_~min~0#1|)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_162|))) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_33 |v_ULTIMATE.start_main_~l~0#1.offset_162|))))))) is different from false [2024-11-13 23:54:04,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 23:54:06,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 23:54:10,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 23:54:12,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:54:12,220 INFO L93 Difference]: Finished difference Result 414 states and 519 transitions. [2024-11-13 23:54:12,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-13 23:54:12,221 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.6153846153846154) internal successors, (141), 39 states have internal predecessors, (141), 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 36 [2024-11-13 23:54:12,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:54:12,222 INFO L225 Difference]: With dead ends: 414 [2024-11-13 23:54:12,222 INFO L226 Difference]: Without dead ends: 412 [2024-11-13 23:54:12,223 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 179 SyntacticMatches, 14 SemanticMatches, 59 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 1048 ImplicationChecksByTransitivity, 35.8s TimeCoverageRelationStatistics Valid=398, Invalid=2242, Unknown=48, NotChecked=972, Total=3660 [2024-11-13 23:54:12,223 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 38 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 8 mSolverCounterUnsat, 60 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 1340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 60 IncrementalHoareTripleChecker+Unknown, 732 IncrementalHoareTripleChecker+Unchecked, 30.7s IncrementalHoareTripleChecker+Time [2024-11-13 23:54:12,224 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 484 Invalid, 1340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 540 Invalid, 60 Unknown, 732 Unchecked, 30.7s Time] [2024-11-13 23:54:12,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2024-11-13 23:54:12,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 346. [2024-11-13 23:54:12,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 344 states have (on average 1.2848837209302326) internal successors, (442), 345 states have internal predecessors, (442), 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) [2024-11-13 23:54:12,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 442 transitions. [2024-11-13 23:54:12,292 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 442 transitions. Word has length 36 [2024-11-13 23:54:12,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:54:12,292 INFO L471 AbstractCegarLoop]: Abstraction has 346 states and 442 transitions. [2024-11-13 23:54:12,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.6153846153846154) internal successors, (141), 39 states have internal predecessors, (141), 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) [2024-11-13 23:54:12,293 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 442 transitions. [2024-11-13 23:54:12,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 23:54:12,293 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:54:12,293 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:54:12,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (47)] Ended with exit code 0 [2024-11-13 23:54:12,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2024-11-13 23:54:12,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2024-11-13 23:54:12,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:54:12,894 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:54:12,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:54:12,895 INFO L85 PathProgramCache]: Analyzing trace with hash -919151602, now seen corresponding path program 1 times [2024-11-13 23:54:12,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:54:12,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [765478796] [2024-11-13 23:54:12,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:54:12,895 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 23:54:12,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:54:12,896 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 23:54:12,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2024-11-13 23:54:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:54:13,129 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-13 23:54:13,132 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:54:13,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 23:54:13,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:54:13,557 INFO L349 Elim1Store]: treesize reduction 34, result has 37.0 percent of original size [2024-11-13 23:54:13,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 35 [2024-11-13 23:54:13,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 23:54:13,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2024-11-13 23:54:14,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2024-11-13 23:54:14,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:54:14,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 51 [2024-11-13 23:54:14,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2024-11-13 23:54:14,209 INFO L349 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2024-11-13 23:54:14,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 38 [2024-11-13 23:54:14,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2024-11-13 23:54:14,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 19 [2024-11-13 23:54:16,388 INFO L349 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2024-11-13 23:54:16,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 38 [2024-11-13 23:54:16,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:54:16,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-11-13 23:54:16,700 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:54:16,700 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:54:17,871 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:54:17,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 38 [2024-11-13 23:54:17,895 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:54:17,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 35 [2024-11-13 23:54:17,957 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1420 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_38 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_39 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_168| (_ BitVec 32))) (or (not (= (select v_arrayElimArr_38 (_ bv0 32)) |c_ULTIMATE.start_main_~l~0#1.base|)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_168|))) (bvsle (select v_ArrVal_1420 (_ bv4 32)) (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_168| v_ArrVal_1420) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_168| v_arrayElimArr_38) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (bvadd (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_168| v_arrayElimArr_39) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|) (_ bv4 32)))) (not (= (select v_arrayElimArr_39 (_ bv0 32)) |c_ULTIMATE.start_main_~l~0#1.offset|)))) is different from false [2024-11-13 23:54:18,276 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:54:18,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 68 [2024-11-13 23:54:18,284 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:54:18,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 49 [2024-11-13 23:54:18,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 52 [2024-11-13 23:54:18,321 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:54:18,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2024-11-13 23:54:18,329 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:54:18,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2024-11-13 23:54:20,390 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_arrayElimCell_302 (_ BitVec 32)) (v_ArrVal_1420 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_168| (_ BitVec 32)) (v_ArrVal_1415 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv0 1) (select (store |c_#valid| v_arrayElimCell_302 (_ bv1 1)) |v_ULTIMATE.start_main_~l~0#1.base_168|))) (not (= (_ bv0 1) (select |c_#valid| v_arrayElimCell_302))) (bvsle (select v_ArrVal_1420 (_ bv4 32)) (select (select (store (store |c_#memory_int| v_arrayElimCell_302 v_ArrVal_1415) |v_ULTIMATE.start_main_~l~0#1.base_168| v_ArrVal_1420) |c_ULTIMATE.start_main_~l~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~l~0#1.offset|))))) is different from false [2024-11-13 23:54:20,887 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:54:20,890 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:54:20,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-13 23:54:20,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-13 23:54:20,927 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 21 not checked. [2024-11-13 23:54:20,928 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-13 23:54:20,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [765478796] [2024-11-13 23:54:20,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [765478796] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:54:20,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [329609646] [2024-11-13 23:54:20,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:54:20,928 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 23:54:20,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-13 23:54:20,930 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 23:54:20,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (50)] Waiting until timeout for monitored process [2024-11-13 23:54:21,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:54:21,274 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-13 23:54:21,278 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:54:21,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 23:54:21,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2024-11-13 23:54:21,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:54:21,610 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-13 23:54:21,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 24 [2024-11-13 23:54:21,734 INFO L349 Elim1Store]: treesize reduction 34, result has 37.0 percent of original size [2024-11-13 23:54:21,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 35 [2024-11-13 23:54:21,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 23:54:22,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2024-11-13 23:54:22,417 INFO L349 Elim1Store]: treesize reduction 22, result has 43.6 percent of original size [2024-11-13 23:54:22,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 31 [2024-11-13 23:54:22,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-13 23:54:22,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:54:22,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 39 [2024-11-13 23:54:22,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:54:22,556 INFO L349 Elim1Store]: treesize reduction 6, result has 66.7 percent of original size [2024-11-13 23:54:22,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 26 [2024-11-13 23:54:22,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2024-11-13 23:54:24,646 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 23:54:24,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 34 [2024-11-13 23:54:24,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 23:54:24,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-13 23:54:24,876 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:54:24,876 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:54:25,983 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:54:25,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 37 [2024-11-13 23:54:26,006 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:54:26,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 34 [2024-11-13 23:54:26,065 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~l~0#1.base_175| (_ BitVec 32)) (v_ArrVal_1477 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_43 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_44 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (bvsgt (_ bv2147483647 32) (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_175| v_ArrVal_1477) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_175| v_arrayElimArr_43) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_175| v_arrayElimArr_44) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_175|))) (not (= (select v_arrayElimArr_43 (_ bv0 32)) |c_ULTIMATE.start_main_~l~0#1.base|)) (not (= (select v_arrayElimArr_44 (_ bv0 32)) |c_ULTIMATE.start_main_~l~0#1.offset|)))) is different from false [2024-11-13 23:54:26,388 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:54:26,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 59 [2024-11-13 23:54:26,397 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:54:26,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 44 [2024-11-13 23:54:26,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 47 [2024-11-13 23:54:26,435 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:54:26,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-13 23:54:26,443 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:54:26,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2024-11-13 23:54:26,504 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_arrayElimCell_321 (_ BitVec 32)) (v_ArrVal_1471 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_175| (_ BitVec 32)) (v_ArrVal_1477 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (bvsgt (_ bv2147483647 32) (select (select (store (store |c_#memory_int| v_arrayElimCell_321 v_ArrVal_1471) |v_ULTIMATE.start_main_~l~0#1.base_175| v_ArrVal_1477) |c_ULTIMATE.start_main_~l~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~l~0#1.offset|)))) (not (= (_ bv0 1) (select (store |c_#valid| v_arrayElimCell_321 (_ bv1 1)) |v_ULTIMATE.start_main_~l~0#1.base_175|))) (not (= (_ bv0 1) (select |c_#valid| v_arrayElimCell_321))))) is different from false [2024-11-13 23:54:27,058 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:54:27,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 31 [2024-11-13 23:54:27,067 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:54:27,069 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:54:27,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-13 23:54:27,106 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 21 not checked. [2024-11-13 23:54:27,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [329609646] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:54:27,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338682984] [2024-11-13 23:54:27,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:54:27,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:54:27,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:54:27,108 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:54:27,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-11-13 23:54:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:54:27,308 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-13 23:54:27,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:54:27,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 23:54:27,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-13 23:54:27,622 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-13 23:54:27,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 24 [2024-11-13 23:54:27,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:54:27,774 INFO L349 Elim1Store]: treesize reduction 34, result has 37.0 percent of original size [2024-11-13 23:54:27,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 35 [2024-11-13 23:54:27,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 23:54:28,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2024-11-13 23:54:28,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:54:28,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 51 [2024-11-13 23:54:28,214 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-13 23:54:28,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 27 [2024-11-13 23:54:28,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 23:54:28,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2024-11-13 23:54:28,383 INFO L349 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2024-11-13 23:54:28,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 38 [2024-11-13 23:54:28,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2024-11-13 23:54:30,404 INFO L349 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2024-11-13 23:54:30,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 38 [2024-11-13 23:54:30,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:54:30,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-13 23:54:30,445 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:54:30,445 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:54:30,760 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:54:30,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 37 [2024-11-13 23:54:30,784 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:54:30,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 34 [2024-11-13 23:54:30,847 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_50 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.offset_182| (_ BitVec 32)) (|v_ULTIMATE.start_main_~l~0#1.base_182| (_ BitVec 32)) (v_arrayElimArr_49 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1525 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_182|))) (not (= (select v_arrayElimArr_50 |v_ULTIMATE.start_main_~l~0#1.offset_182|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_49 |v_ULTIMATE.start_main_~l~0#1.offset_182|))) (not (bvsgt (_ bv2147483647 32) (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_182| v_ArrVal_1525) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_182| v_arrayElimArr_49) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_182| v_arrayElimArr_50) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))))))) is different from false [2024-11-13 23:54:31,145 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:54:31,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 67 [2024-11-13 23:54:31,152 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:54:31,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 48 [2024-11-13 23:54:31,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2024-11-13 23:54:31,188 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:54:31,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2024-11-13 23:54:31,196 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:54:31,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2024-11-13 23:54:31,287 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~l~0#1.base_182| (_ BitVec 32)) (v_ArrVal_1523 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_340 (_ BitVec 32)) (v_ArrVal_1525 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (bvsgt (_ bv2147483647 32) (select (select (store (store |c_#memory_int| v_arrayElimCell_340 v_ArrVal_1523) |v_ULTIMATE.start_main_~l~0#1.base_182| v_ArrVal_1525) |c_ULTIMATE.start_main_~l~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~l~0#1.offset|)))) (not (= (_ bv0 1) (select |c_#valid| v_arrayElimCell_340))) (not (= (_ bv0 1) (select (store |c_#valid| v_arrayElimCell_340 (_ bv1 1)) |v_ULTIMATE.start_main_~l~0#1.base_182|))))) is different from false [2024-11-13 23:54:32,157 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:54:32,159 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:54:32,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2024-11-13 23:54:32,199 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 21 not checked. [2024-11-13 23:54:32,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338682984] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:54:32,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-13 23:54:32,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11, 11, 11, 11] total 39 [2024-11-13 23:54:32,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601667429] [2024-11-13 23:54:32,200 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-13 23:54:32,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-13 23:54:32,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-13 23:54:32,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-13 23:54:32,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=942, Unknown=10, NotChecked=402, Total=1482 [2024-11-13 23:54:32,202 INFO L87 Difference]: Start difference. First operand 346 states and 442 transitions. Second operand has 39 states, 39 states have (on average 3.9743589743589745) internal successors, (155), 39 states have internal predecessors, (155), 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) [2024-11-13 23:54:42,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:54:42,670 INFO L93 Difference]: Finished difference Result 427 states and 527 transitions. [2024-11-13 23:54:42,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-13 23:54:42,670 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.9743589743589745) internal successors, (155), 39 states have internal predecessors, (155), 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 36 [2024-11-13 23:54:42,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:54:42,672 INFO L225 Difference]: With dead ends: 427 [2024-11-13 23:54:42,672 INFO L226 Difference]: Without dead ends: 425 [2024-11-13 23:54:42,673 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 170 SyntacticMatches, 7 SemanticMatches, 59 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 768 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=387, Invalid=2597, Unknown=10, NotChecked=666, Total=3660 [2024-11-13 23:54:42,673 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 109 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 669 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-13 23:54:42,673 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 412 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 497 Invalid, 0 Unknown, 669 Unchecked, 4.4s Time] [2024-11-13 23:54:42,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2024-11-13 23:54:42,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 357. [2024-11-13 23:54:42,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 355 states have (on average 1.2845070422535212) internal successors, (456), 356 states have internal predecessors, (456), 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) [2024-11-13 23:54:42,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 456 transitions. [2024-11-13 23:54:42,746 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 456 transitions. Word has length 36 [2024-11-13 23:54:42,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:54:42,746 INFO L471 AbstractCegarLoop]: Abstraction has 357 states and 456 transitions. [2024-11-13 23:54:42,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.9743589743589745) internal successors, (155), 39 states have internal predecessors, (155), 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) [2024-11-13 23:54:42,746 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 456 transitions. [2024-11-13 23:54:42,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 23:54:42,752 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:54:42,752 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:54:42,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2024-11-13 23:54:42,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (50)] Ended with exit code 0 [2024-11-13 23:54:43,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Ended with exit code 0 [2024-11-13 23:54:43,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 23:54:43,353 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:54:43,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:54:43,353 INFO L85 PathProgramCache]: Analyzing trace with hash 996286610, now seen corresponding path program 2 times [2024-11-13 23:54:43,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:54:43,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1314210618] [2024-11-13 23:54:43,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 23:54:43,354 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 23:54:43,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:54:43,355 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 23:54:43,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2024-11-13 23:54:43,579 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 23:54:43,579 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 23:54:43,586 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-13 23:54:43,589 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:54:43,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 23:54:43,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-13 23:54:44,000 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-13 23:54:44,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 23 [2024-11-13 23:54:44,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-13 23:54:44,140 INFO L349 Elim1Store]: treesize reduction 34, result has 37.0 percent of original size [2024-11-13 23:54:44,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 35 [2024-11-13 23:54:44,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:54:44,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 23:54:44,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2024-11-13 23:54:44,960 INFO L349 Elim1Store]: treesize reduction 22, result has 43.6 percent of original size [2024-11-13 23:54:44,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 31 [2024-11-13 23:54:44,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-13 23:54:45,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:54:45,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 38 [2024-11-13 23:54:45,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:54:45,120 INFO L349 Elim1Store]: treesize reduction 6, result has 66.7 percent of original size [2024-11-13 23:54:45,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 26 [2024-11-13 23:54:45,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:54:45,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2024-11-13 23:54:48,946 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-13 23:54:48,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 44 [2024-11-13 23:54:48,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:54:48,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 23:54:49,363 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-11-13 23:54:49,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 22 [2024-11-13 23:54:49,544 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:54:49,544 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:54:52,487 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:54:52,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 37 [2024-11-13 23:54:52,530 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:54:52,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 34 [2024-11-13 23:54:52,659 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~l~0#1.base_189| (_ BitVec 32)) (v_ArrVal_1578 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_54 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_55 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_189| v_ArrVal_1578)) (.cse1 (select v_ArrVal_1578 (_ bv4 32)))) (or (bvslt (select (select .cse0 |c_ULTIMATE.start_main_~l~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~l~0#1.offset|)) |c_ULTIMATE.start_main_~min~0#1|) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_54 (_ bv0 32)))) (not (bvslt |c_ULTIMATE.start_main_~max~0#1| .cse1)) (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_55 (_ bv0 32)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_189|))) (not (bvslt (select (select .cse0 (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_189| v_arrayElimArr_54) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_189| v_arrayElimArr_55) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) |c_ULTIMATE.start_main_~min~0#1|)) (bvsgt |c_ULTIMATE.start_main_~min~0#1| .cse1)))) is different from false [2024-11-13 23:54:53,024 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~l~0#1.base_189| (_ BitVec 32)) (v_ArrVal_1578 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_54 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_55 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_189| v_ArrVal_1578)) (.cse1 (select v_ArrVal_1578 (_ bv4 32)))) (or (bvslt (select (select .cse0 |c_ULTIMATE.start_main_~l~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~l~0#1.offset|)) |c_ULTIMATE.start_main_~min~0#1|) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_54 (_ bv0 32)))) (not (bvslt (select (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~p~0#1.offset|)) .cse1)) (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_55 (_ bv0 32)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_189|))) (not (bvslt (select (select .cse0 (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_189| v_arrayElimArr_54) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_189| v_arrayElimArr_55) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) |c_ULTIMATE.start_main_~min~0#1|)) (bvsgt |c_ULTIMATE.start_main_~min~0#1| .cse1)))) is different from false [2024-11-13 23:54:53,282 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:54:53,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 59 [2024-11-13 23:54:53,293 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:54:53,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 44 [2024-11-13 23:54:53,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 60 [2024-11-13 23:54:53,342 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:54:53,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-13 23:54:53,352 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:54:53,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2024-11-13 23:54:53,492 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~l~0#1.base_189| (_ BitVec 32)) (v_ArrVal_1574 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1578 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_362 (_ BitVec 32))) (let ((.cse0 (store (store |c_#memory_int| v_arrayElimCell_362 v_ArrVal_1574) |v_ULTIMATE.start_main_~l~0#1.base_189| v_ArrVal_1578))) (or (not (bvslt (select (select .cse0 |c_ULTIMATE.start_main_~l~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~l~0#1.offset|)) |c_ULTIMATE.start_main_~min~0#1|)) (bvslt (select (select .cse0 v_arrayElimCell_362) (_ bv4 32)) |c_ULTIMATE.start_main_~min~0#1|) (not (bvslt (select v_ArrVal_1574 (_ bv4 32)) (select v_ArrVal_1578 (_ bv4 32)))) (not (= (_ bv0 1) (select (store |c_#valid| v_arrayElimCell_362 (_ bv1 1)) |v_ULTIMATE.start_main_~l~0#1.base_189|))) (not (= (_ bv0 1) (select |c_#valid| v_arrayElimCell_362)))))) is different from false [2024-11-13 23:54:54,362 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 17 not checked. [2024-11-13 23:54:54,362 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-13 23:54:54,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1314210618] [2024-11-13 23:54:54,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1314210618] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:54:54,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [656236439] [2024-11-13 23:54:54,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 23:54:54,363 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 23:54:54,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-13 23:54:54,364 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 23:54:54,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (53)] Waiting until timeout for monitored process [2024-11-13 23:54:54,730 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 23:54:54,730 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 23:54:54,733 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-13 23:54:54,736 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:54:54,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2024-11-13 23:54:54,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 23:54:55,027 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-13 23:54:55,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 23 [2024-11-13 23:54:55,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-13 23:54:55,162 INFO L349 Elim1Store]: treesize reduction 34, result has 37.0 percent of original size [2024-11-13 23:54:55,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 35 [2024-11-13 23:54:55,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:54:55,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 23:54:55,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2024-11-13 23:54:55,943 INFO L349 Elim1Store]: treesize reduction 22, result has 43.6 percent of original size [2024-11-13 23:54:55,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 31 [2024-11-13 23:54:55,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-13 23:54:56,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:54:56,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 38 [2024-11-13 23:54:56,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:54:56,092 INFO L349 Elim1Store]: treesize reduction 6, result has 66.7 percent of original size [2024-11-13 23:54:56,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 26 [2024-11-13 23:54:56,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 19 [2024-11-13 23:54:58,357 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 23:54:58,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 33 [2024-11-13 23:54:58,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 23:54:58,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 23:54:58,850 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:54:58,850 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:54:59,650 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:54:59,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 37 [2024-11-13 23:54:59,687 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:54:59,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 34 [2024-11-13 23:54:59,807 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~l~0#1.base_195| (_ BitVec 32)) (v_arrayElimArr_60 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_59 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1631 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (select v_arrayElimArr_59 (_ bv0 32)) |c_ULTIMATE.start_main_~l~0#1.base|)) (not (bvslt (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_195| v_ArrVal_1631) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_195| v_arrayElimArr_59) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_195| v_arrayElimArr_60) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) |c_ULTIMATE.start_main_~min~0#1|)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_195|))) (not (= (select v_arrayElimArr_60 (_ bv0 32)) |c_ULTIMATE.start_main_~l~0#1.offset|)))) is different from false [2024-11-13 23:55:00,141 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:55:00,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 59 [2024-11-13 23:55:00,149 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:55:00,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 44 [2024-11-13 23:55:00,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 47 [2024-11-13 23:55:00,188 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:55:00,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-13 23:55:00,196 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:55:00,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2024-11-13 23:55:01,892 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 12 not checked. [2024-11-13 23:55:01,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [656236439] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:55:01,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722047806] [2024-11-13 23:55:01,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 23:55:01,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:55:01,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:55:01,894 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:55:01,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-11-13 23:55:02,092 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 23:55:02,092 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 23:55:02,095 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-13 23:55:02,097 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:55:02,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 23:55:02,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 23:55:02,390 INFO L349 Elim1Store]: treesize reduction 34, result has 37.0 percent of original size [2024-11-13 23:55:02,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 35 [2024-11-13 23:55:02,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:55:02,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-13 23:55:03,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2024-11-13 23:55:03,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:55:03,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 50 [2024-11-13 23:55:03,156 INFO L349 Elim1Store]: treesize reduction 37, result has 47.1 percent of original size [2024-11-13 23:55:03,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 39 [2024-11-13 23:55:03,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-13 23:55:03,297 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-13 23:55:03,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 27 [2024-11-13 23:55:03,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 23:55:03,458 INFO L349 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2024-11-13 23:55:03,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 38 [2024-11-13 23:55:03,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2024-11-13 23:55:05,511 INFO L349 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2024-11-13 23:55:05,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 37 [2024-11-13 23:55:05,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:55:05,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 23:55:05,569 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:55:05,569 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:55:05,805 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:55:05,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 37 [2024-11-13 23:55:05,830 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:55:05,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 34 [2024-11-13 23:55:05,898 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1680 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_64 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.offset_201| (_ BitVec 32)) (v_arrayElimArr_65 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_201| (_ BitVec 32))) (or (not (= (select v_arrayElimArr_65 |v_ULTIMATE.start_main_~l~0#1.offset_201|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (= (select v_arrayElimArr_64 |v_ULTIMATE.start_main_~l~0#1.offset_201|) |c_ULTIMATE.start_main_~l~0#1.base|)) (not (bvslt (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_201| v_ArrVal_1680) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_201| v_arrayElimArr_64) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_201| v_arrayElimArr_65) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) |c_ULTIMATE.start_main_~min~0#1|)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_201|))))) is different from false [2024-11-13 23:55:06,200 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:55:06,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 67 [2024-11-13 23:55:06,208 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:55:06,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 48 [2024-11-13 23:55:06,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2024-11-13 23:55:06,245 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:55:06,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2024-11-13 23:55:06,252 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:55:06,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2024-11-13 23:55:06,313 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_arrayElimCell_399 (_ BitVec 32)) (v_ArrVal_1680 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_201| (_ BitVec 32)) (v_ArrVal_1679 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv0 1) (select |c_#valid| v_arrayElimCell_399))) (not (bvslt (select (select (store (store |c_#memory_int| v_arrayElimCell_399 v_ArrVal_1679) |v_ULTIMATE.start_main_~l~0#1.base_201| v_ArrVal_1680) |c_ULTIMATE.start_main_~l~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~l~0#1.offset|)) |c_ULTIMATE.start_main_~min~0#1|)) (not (= (_ bv0 1) (select (store |c_#valid| v_arrayElimCell_399 (_ bv1 1)) |v_ULTIMATE.start_main_~l~0#1.base_201|))))) is different from false [2024-11-13 23:55:06,564 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:55:06,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 70 [2024-11-13 23:55:06,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 50 [2024-11-13 23:55:06,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 46 [2024-11-13 23:55:12,825 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 17 not checked. [2024-11-13 23:55:12,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722047806] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:55:12,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-13 23:55:12,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 10, 10, 10, 10] total 48 [2024-11-13 23:55:12,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615104410] [2024-11-13 23:55:12,826 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-13 23:55:12,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-13 23:55:12,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-13 23:55:12,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-13 23:55:12,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1532, Unknown=14, NotChecked=510, Total=2256 [2024-11-13 23:55:12,828 INFO L87 Difference]: Start difference. First operand 357 states and 456 transitions. Second operand has 48 states, 48 states have (on average 3.2916666666666665) internal successors, (158), 48 states have internal predecessors, (158), 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) [2024-11-13 23:55:23,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 23:55:26,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 23:55:29,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 23:55:39,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:55:39,697 INFO L93 Difference]: Finished difference Result 625 states and 770 transitions. [2024-11-13 23:55:39,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-13 23:55:39,699 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.2916666666666665) internal successors, (158), 48 states have internal predecessors, (158), 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 36 [2024-11-13 23:55:39,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:55:39,701 INFO L225 Difference]: With dead ends: 625 [2024-11-13 23:55:39,701 INFO L226 Difference]: Without dead ends: 623 [2024-11-13 23:55:39,702 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 167 SyntacticMatches, 10 SemanticMatches, 63 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 891 ImplicationChecksByTransitivity, 23.7s TimeCoverageRelationStatistics Valid=389, Invalid=3037, Unknown=20, NotChecked=714, Total=4160 [2024-11-13 23:55:39,703 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 64 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 9 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 2292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 1016 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2024-11-13 23:55:39,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 742 Invalid, 2292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1259 Invalid, 8 Unknown, 1016 Unchecked, 19.0s Time] [2024-11-13 23:55:39,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2024-11-13 23:55:39,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 415. [2024-11-13 23:55:39,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 413 states have (on average 1.3099273607748183) internal successors, (541), 414 states have internal predecessors, (541), 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) [2024-11-13 23:55:39,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 541 transitions. [2024-11-13 23:55:39,828 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 541 transitions. Word has length 36 [2024-11-13 23:55:39,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:55:39,828 INFO L471 AbstractCegarLoop]: Abstraction has 415 states and 541 transitions. [2024-11-13 23:55:39,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.2916666666666665) internal successors, (158), 48 states have internal predecessors, (158), 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) [2024-11-13 23:55:39,828 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 541 transitions. [2024-11-13 23:55:39,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 23:55:39,830 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:55:39,830 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:55:39,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2024-11-13 23:55:40,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (53)] Ended with exit code 0 [2024-11-13 23:55:40,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Ended with exit code 0 [2024-11-13 23:55:40,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 23:55:40,431 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:55:40,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:55:40,432 INFO L85 PathProgramCache]: Analyzing trace with hash -314223152, now seen corresponding path program 2 times [2024-11-13 23:55:40,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:55:40,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [732572812] [2024-11-13 23:55:40,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 23:55:40,433 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 23:55:40,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:55:40,435 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 23:55:40,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2024-11-13 23:55:40,682 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 23:55:40,682 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 23:55:40,687 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-13 23:55:40,690 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:55:40,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 23:55:41,654 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-13 23:55:41,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 33 [2024-11-13 23:55:41,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2024-11-13 23:55:41,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:55:41,991 INFO L349 Elim1Store]: treesize reduction 34, result has 37.0 percent of original size [2024-11-13 23:55:41,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 35 [2024-11-13 23:55:42,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 23:55:44,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2024-11-13 23:55:44,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:55:44,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 56 [2024-11-13 23:55:44,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:55:44,317 INFO L349 Elim1Store]: treesize reduction 6, result has 66.7 percent of original size [2024-11-13 23:55:44,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 26 [2024-11-13 23:55:44,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:55:44,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 50 [2024-11-13 23:55:44,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:55:44,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2024-11-13 23:55:44,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-13 23:55:51,861 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-13 23:55:51,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 121 treesize of output 60 [2024-11-13 23:55:51,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:55:51,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 23:55:53,309 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-11-13 23:55:53,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 29 [2024-11-13 23:55:53,683 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:55:53,683 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:55:58,176 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:55:58,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 39 [2024-11-13 23:55:58,214 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:55:58,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 36 [2024-11-13 23:55:58,394 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_70 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_207| (_ BitVec 32)) (v_arrayElimArr_69 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1732 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_207| v_ArrVal_1732))) (let ((.cse1 (select v_ArrVal_1732 (_ bv4 32))) (.cse2 (select (select .cse0 |c_ULTIMATE.start_main_~l~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~l~0#1.offset|)))) (or (not (bvslt (select (select .cse0 (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_207| v_arrayElimArr_69) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_207| v_arrayElimArr_70) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) .cse1)) (bvslt .cse2 .cse1) (not (bvsgt |c_ULTIMATE.start_main_~min~0#1| .cse1)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_69 (_ bv0 32)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_207|))) (not (= (select v_arrayElimArr_70 (_ bv0 32)) |c_ULTIMATE.start_main_~l~0#1.offset|)) (bvsgt .cse2 |c_ULTIMATE.start_main_~max~0#1|))))) is different from false [2024-11-13 23:56:01,337 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:56:01,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 61 [2024-11-13 23:56:01,350 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:56:01,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 46 [2024-11-13 23:56:01,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 77 [2024-11-13 23:56:01,414 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:56:01,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2024-11-13 23:56:01,427 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:56:01,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2024-11-13 23:56:04,294 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:56:04,297 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:56:04,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 27 [2024-11-13 23:56:04,319 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-11-13 23:56:04,320 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2024-11-13 23:56:04,320 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-13 23:56:04,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [732572812] [2024-11-13 23:56:04,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [732572812] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:56:04,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1269042447] [2024-11-13 23:56:04,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 23:56:04,320 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 23:56:04,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-13 23:56:04,322 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 23:56:04,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (56)] Waiting until timeout for monitored process [2024-11-13 23:56:04,737 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 23:56:04,738 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 23:56:04,746 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-13 23:56:04,750 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:56:04,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2024-11-13 23:56:04,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 23:56:06,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 23:56:06,433 INFO L349 Elim1Store]: treesize reduction 34, result has 37.0 percent of original size [2024-11-13 23:56:06,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 35 [2024-11-13 23:56:06,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 18 [2024-11-13 23:56:06,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:56:09,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2024-11-13 23:56:09,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:56:09,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 38 [2024-11-13 23:56:09,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:56:10,013 INFO L349 Elim1Store]: treesize reduction 29, result has 46.3 percent of original size [2024-11-13 23:56:10,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 52 [2024-11-13 23:56:10,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-13 23:56:10,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:56:10,176 INFO L349 Elim1Store]: treesize reduction 6, result has 66.7 percent of original size [2024-11-13 23:56:10,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 26 [2024-11-13 23:56:10,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:56:10,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2024-11-13 23:56:10,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-13 23:56:22,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:56:22,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-13 23:56:22,087 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-13 23:56:22,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 46 [2024-11-13 23:56:23,123 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-11-13 23:56:23,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 26 [2024-11-13 23:56:23,570 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 10 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:56:23,570 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:56:25,528 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:56:25,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 39 [2024-11-13 23:56:25,564 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:56:25,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 36 [2024-11-13 23:56:25,701 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1790 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_74 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_75 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_213| (_ BitVec 32))) (let ((.cse2 (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_213| v_ArrVal_1790))) (let ((.cse1 (select v_ArrVal_1790 (_ bv4 32))) (.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~l~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~l~0#1.offset|)))) (or (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_74 (_ bv0 32)))) (bvslt .cse0 .cse1) (not (= (select v_arrayElimArr_75 (_ bv0 32)) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (bvslt (select (select .cse2 (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_213| v_arrayElimArr_74) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_213| v_arrayElimArr_75) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) .cse1)) (not (bvsgt |c_ULTIMATE.start_main_~min~0#1| .cse1)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_213|))) (bvsgt .cse0 |c_ULTIMATE.start_main_~max~0#1|))))) is different from false [2024-11-13 23:56:26,986 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:56:26,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 71 [2024-11-13 23:56:27,000 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:56:27,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 56 [2024-11-13 23:56:27,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 101 [2024-11-13 23:56:27,071 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:56:27,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 42 [2024-11-13 23:56:27,086 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:56:27,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 31 [2024-11-13 23:56:40,556 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2024-11-13 23:56:40,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1269042447] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:56:40,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738060233] [2024-11-13 23:56:40,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 23:56:40,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:56:40,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:56:40,559 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:56:40,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46457f06-5901-43f3-a025-f8fc8f5ee1cc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-11-13 23:56:40,842 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 23:56:40,842 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 23:56:40,845 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-13 23:56:40,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:56:40,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 23:56:40,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-13 23:56:41,302 INFO L349 Elim1Store]: treesize reduction 34, result has 37.0 percent of original size [2024-11-13 23:56:41,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 35 [2024-11-13 23:56:41,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 23:56:41,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:56:41,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 20 [2024-11-13 23:56:43,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2024-11-13 23:56:43,557 INFO L349 Elim1Store]: treesize reduction 22, result has 43.6 percent of original size [2024-11-13 23:56:43,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 31 [2024-11-13 23:56:43,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-13 23:56:43,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:56:43,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 56 [2024-11-13 23:56:43,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:56:43,742 INFO L349 Elim1Store]: treesize reduction 6, result has 66.7 percent of original size [2024-11-13 23:56:43,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 26 [2024-11-13 23:56:43,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:56:43,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 42 [2024-11-13 23:56:52,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:56:52,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-13 23:56:52,920 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-13 23:56:52,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 46 [2024-11-13 23:56:54,115 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-11-13 23:56:54,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 26 [2024-11-13 23:56:54,136 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:56:54,136 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:56:59,600 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:56:59,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 39 [2024-11-13 23:56:59,651 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:56:59,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 36 [2024-11-13 23:56:59,773 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1837 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_80 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_219| (_ BitVec 32)) (v_arrayElimArr_79 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_219| v_ArrVal_1837)) (.cse0 (select v_ArrVal_1837 (_ bv4 32)))) (or (not (bvsgt |c_ULTIMATE.start_main_~min~0#1| .cse0)) (bvslt (select (select .cse1 |c_ULTIMATE.start_main_~l~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~l~0#1.offset|)) .cse0) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_219|))) (not (bvslt (select (select .cse1 (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_219| v_arrayElimArr_79) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (bvadd (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_219| v_arrayElimArr_80) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|) (_ bv4 32))) .cse0)) (not (= (select v_arrayElimArr_80 (_ bv0 32)) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_79 (_ bv0 32))))))) is different from false [2024-11-13 23:57:04,819 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:57:04,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 61 [2024-11-13 23:57:04,832 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:57:04,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 46 [2024-11-13 23:57:04,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 64 [2024-11-13 23:57:04,895 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:57:04,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2024-11-13 23:57:04,909 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:57:04,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2024-11-13 23:57:11,875 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2024-11-13 23:57:11,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738060233] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:57:11,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-13 23:57:11,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 20, 21, 17, 19] total 80 [2024-11-13 23:57:11,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577174713] [2024-11-13 23:57:11,876 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-13 23:57:11,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2024-11-13 23:57:11,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-13 23:57:11,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2024-11-13 23:57:11,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=690, Invalid=5123, Unknown=51, NotChecked=456, Total=6320 [2024-11-13 23:57:11,880 INFO L87 Difference]: Start difference. First operand 415 states and 541 transitions. Second operand has 80 states, 80 states have (on average 2.0625) internal successors, (165), 80 states have internal predecessors, (165), 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) [2024-11-13 23:57:34,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 23:58:36,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 23:58:36,847 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~l~0#1.offset|))) (let ((.cse4 (forall ((v_ArrVal_1837 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_80 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_219| (_ BitVec 32)) (v_arrayElimArr_79 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse9 (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_219| v_ArrVal_1837)) (.cse8 (select v_ArrVal_1837 (_ bv4 32)))) (or (not (bvsgt |c_ULTIMATE.start_main_~min~0#1| .cse8)) (bvslt (select (select .cse9 |c_ULTIMATE.start_main_~l~0#1.base|) .cse3) .cse8) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_219|))) (not (bvslt (select (select .cse9 (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_219| v_arrayElimArr_79) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (bvadd (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_219| v_arrayElimArr_80) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|) (_ bv4 32))) .cse8)) (not (= (select v_arrayElimArr_80 (_ bv0 32)) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_79 (_ bv0 32))))))))) (and (forall ((v_arrayElimArr_70 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_207| (_ BitVec 32)) (v_arrayElimArr_69 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1732 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_207| v_ArrVal_1732))) (let ((.cse1 (select v_ArrVal_1732 (_ bv4 32))) (.cse2 (select (select .cse0 |c_ULTIMATE.start_main_~l~0#1.base|) .cse3))) (or (not (bvslt (select (select .cse0 (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_207| v_arrayElimArr_69) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_207| v_arrayElimArr_70) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) .cse1)) (bvslt .cse2 .cse1) (not (bvsgt |c_ULTIMATE.start_main_~min~0#1| .cse1)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_69 (_ bv0 32)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_207|))) (not (= (select v_arrayElimArr_70 (_ bv0 32)) |c_ULTIMATE.start_main_~l~0#1.offset|)) (bvsgt .cse2 |c_ULTIMATE.start_main_~max~0#1|))))) (or (bvslt |c_ULTIMATE.start_main_~max~0#1| |c_ULTIMATE.start_main_#t~mem8#1|) .cse4) (or (bvslt |c_ULTIMATE.start_main_~max~0#1| (select (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~p~0#1.offset|))) .cse4) (forall ((v_ArrVal_1790 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_74 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_75 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_213| (_ BitVec 32))) (let ((.cse7 (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_213| v_ArrVal_1790))) (let ((.cse6 (select v_ArrVal_1790 (_ bv4 32))) (.cse5 (select (select .cse7 |c_ULTIMATE.start_main_~l~0#1.base|) .cse3))) (or (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_74 (_ bv0 32)))) (bvslt .cse5 .cse6) (not (= (select v_arrayElimArr_75 (_ bv0 32)) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (bvslt (select (select .cse7 (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_213| v_arrayElimArr_74) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_213| v_arrayElimArr_75) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) .cse6)) (not (bvsgt |c_ULTIMATE.start_main_~min~0#1| .cse6)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_213|))) (bvsgt .cse5 |c_ULTIMATE.start_main_~max~0#1|))))) .cse4))) is different from false [2024-11-13 23:58:39,030 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~l~0#1.offset|))) (and (forall ((v_arrayElimArr_70 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_207| (_ BitVec 32)) (v_arrayElimArr_69 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1732 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_207| v_ArrVal_1732))) (let ((.cse1 (select v_ArrVal_1732 (_ bv4 32))) (.cse2 (select (select .cse0 |c_ULTIMATE.start_main_~l~0#1.base|) .cse3))) (or (not (bvslt (select (select .cse0 (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_207| v_arrayElimArr_69) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_207| v_arrayElimArr_70) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) .cse1)) (bvslt .cse2 .cse1) (not (bvsgt |c_ULTIMATE.start_main_~min~0#1| .cse1)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_69 (_ bv0 32)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_207|))) (not (= (select v_arrayElimArr_70 (_ bv0 32)) |c_ULTIMATE.start_main_~l~0#1.offset|)) (bvsgt .cse2 |c_ULTIMATE.start_main_~max~0#1|))))) (forall ((v_ArrVal_1790 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_74 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_75 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_213| (_ BitVec 32))) (let ((.cse6 (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_213| v_ArrVal_1790))) (let ((.cse5 (select v_ArrVal_1790 (_ bv4 32))) (.cse4 (select (select .cse6 |c_ULTIMATE.start_main_~l~0#1.base|) .cse3))) (or (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_74 (_ bv0 32)))) (bvslt .cse4 .cse5) (not (= (select v_arrayElimArr_75 (_ bv0 32)) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (bvslt (select (select .cse6 (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_213| v_arrayElimArr_74) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_213| v_arrayElimArr_75) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) .cse5)) (not (bvsgt |c_ULTIMATE.start_main_~min~0#1| .cse5)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_213|))) (bvsgt .cse4 |c_ULTIMATE.start_main_~max~0#1|))))) (forall ((v_ArrVal_1837 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_80 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~l~0#1.base_219| (_ BitVec 32)) (v_arrayElimArr_79 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse8 (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_219| v_ArrVal_1837)) (.cse7 (select v_ArrVal_1837 (_ bv4 32)))) (or (not (bvsgt |c_ULTIMATE.start_main_~min~0#1| .cse7)) (bvslt (select (select .cse8 |c_ULTIMATE.start_main_~l~0#1.base|) .cse3) .cse7) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_219|))) (not (bvslt (select (select .cse8 (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_219| v_arrayElimArr_79) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (bvadd (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_219| v_arrayElimArr_80) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|) (_ bv4 32))) .cse7)) (not (= (select v_arrayElimArr_80 (_ bv0 32)) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_79 (_ bv0 32))))))))) is different from false [2024-11-13 23:58:42,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 23:58:44,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 23:58:46,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 23:58:48,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 23:58:50,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 23:58:52,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 23:58:54,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 23:58:55,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 23:58:57,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 23:58:59,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 23:59:01,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 23:59:03,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 23:59:05,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1]