./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-46.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-46.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 53cf1c89f0977ad1ca8f0cd80861a2586d1d5ed487af656b04baa58a1567d392 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 06:50:50,823 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:50:50,919 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 06:50:50,926 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:50:50,927 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:50:50,967 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:50:50,968 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:50:50,969 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:50:50,970 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:50:50,971 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:50:50,973 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 06:50:50,974 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 06:50:50,975 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 06:50:50,975 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 06:50:50,975 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 06:50:50,976 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 06:50:50,976 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 06:50:50,977 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 06:50:50,977 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 06:50:50,982 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 06:50:50,983 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 06:50:50,983 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 06:50:50,984 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:50:50,984 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 06:50:50,984 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 06:50:50,985 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:50:50,985 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 06:50:50,985 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:50:50,986 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 06:50:50,986 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:50:50,986 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 06:50:50,986 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:50:50,987 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 06:50:50,987 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 06:50:50,987 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:50:50,987 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:50:50,988 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:50:50,988 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:50:50,988 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:50:50,989 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:50:50,989 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:50:50,991 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 06:50:50,991 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 06:50:50,991 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 06:50:50,992 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:50:50,992 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 06:50:50,992 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 06:50:50,992 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53cf1c89f0977ad1ca8f0cd80861a2586d1d5ed487af656b04baa58a1567d392 [2024-11-09 06:50:51,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:50:51,363 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:50:51,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:50:51,372 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:50:51,372 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:50:51,374 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-46.i Unable to find full path for "g++" [2024-11-09 06:50:53,508 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:50:53,704 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:50:53,705 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-46.i [2024-11-09 06:50:53,714 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/data/91bd037b7/7488ce5d7a9f4226afa009215751647f/FLAGbda264d25 [2024-11-09 06:50:53,731 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/data/91bd037b7/7488ce5d7a9f4226afa009215751647f [2024-11-09 06:50:53,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:50:53,735 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:50:53,736 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:50:53,736 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:50:53,743 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:50:53,744 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:50:53" (1/1) ... [2024-11-09 06:50:53,747 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@679710fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:50:53, skipping insertion in model container [2024-11-09 06:50:53,747 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:50:53" (1/1) ... [2024-11-09 06:50:53,775 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:50:53,963 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_8f824608-40a3-4b9c-a538-283e5aa6c5d3/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-46.i[916,929] [2024-11-09 06:50:54,062 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:50:54,078 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:50:54,093 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_8f824608-40a3-4b9c-a538-283e5aa6c5d3/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-46.i[916,929] [2024-11-09 06:50:54,143 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:50:54,174 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:50:54,175 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:50:54 WrapperNode [2024-11-09 06:50:54,175 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:50:54,176 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:50:54,177 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:50:54,177 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:50:54,185 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:50:54" (1/1) ... [2024-11-09 06:50:54,205 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:50:54" (1/1) ... [2024-11-09 06:50:54,267 INFO L138 Inliner]: procedures = 30, calls = 127, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 397 [2024-11-09 06:50:54,267 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:50:54,268 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:50:54,269 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:50:54,269 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:50:54,279 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:50:54" (1/1) ... [2024-11-09 06:50:54,280 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:50:54" (1/1) ... [2024-11-09 06:50:54,288 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:50:54" (1/1) ... [2024-11-09 06:50:54,288 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:50:54" (1/1) ... [2024-11-09 06:50:54,320 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:50:54" (1/1) ... [2024-11-09 06:50:54,326 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:50:54" (1/1) ... [2024-11-09 06:50:54,328 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:50:54" (1/1) ... [2024-11-09 06:50:54,331 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:50:54" (1/1) ... [2024-11-09 06:50:54,337 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:50:54,338 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:50:54,338 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:50:54,338 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:50:54,343 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:50:54" (1/1) ... [2024-11-09 06:50:54,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:50:54,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:50:54,396 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 06:50:54,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 06:50:54,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 06:50:54,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2024-11-09 06:50:54,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-09 06:50:54,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2024-11-09 06:50:54,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 06:50:54,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2024-11-09 06:50:54,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 06:50:54,457 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 06:50:54,457 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 06:50:54,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 06:50:54,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:50:54,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:50:54,617 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:50:54,620 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:50:55,277 INFO L? ?]: Removed 100 outVars from TransFormulas that were not future-live. [2024-11-09 06:50:55,278 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:50:55,839 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:50:55,840 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 06:50:55,840 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:50:55 BoogieIcfgContainer [2024-11-09 06:50:55,840 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:50:55,846 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:50:55,846 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:50:55,851 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:50:55,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:50:53" (1/3) ... [2024-11-09 06:50:55,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4664ff62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:50:55, skipping insertion in model container [2024-11-09 06:50:55,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:50:54" (2/3) ... [2024-11-09 06:50:55,856 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4664ff62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:50:55, skipping insertion in model container [2024-11-09 06:50:55,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:50:55" (3/3) ... [2024-11-09 06:50:55,858 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-46.i [2024-11-09 06:50:55,879 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:50:55,879 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 06:50:55,992 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:50:56,002 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;@196f9805, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:50:56,002 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 06:50:56,007 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-09 06:50:56,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-09 06:50:56,019 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:50:56,020 INFO L215 NwaCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:50:56,020 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:50:56,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:50:56,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1530871458, now seen corresponding path program 1 times [2024-11-09 06:50:56,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:50:56,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336133626] [2024-11-09 06:50:56,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:50:56,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:50:57,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 06:50:57,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2114828465] [2024-11-09 06:50:57,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:50:57,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:50:57,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:50:57,442 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:50:57,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 06:50:59,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:50:59,910 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 06:51:00,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:51:01,038 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-09 06:51:01,041 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 06:51:01,042 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 06:51:01,056 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 06:51:01,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-09 06:51:01,251 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-09 06:51:01,331 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 06:51:01,335 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 06:51:01 BoogieIcfgContainer [2024-11-09 06:51:01,335 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 06:51:01,336 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 06:51:01,336 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 06:51:01,336 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 06:51:01,337 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:50:55" (3/4) ... [2024-11-09 06:51:01,340 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-09 06:51:01,341 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 06:51:01,343 INFO L158 Benchmark]: Toolchain (without parser) took 7607.81ms. Allocated memory was 132.1MB in the beginning and 218.1MB in the end (delta: 86.0MB). Free memory was 90.0MB in the beginning and 134.1MB in the end (delta: -44.2MB). Peak memory consumption was 45.0MB. Max. memory is 16.1GB. [2024-11-09 06:51:01,343 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 132.1MB. Free memory is still 75.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 06:51:01,344 INFO L158 Benchmark]: CACSL2BoogieTranslator took 439.53ms. Allocated memory is still 132.1MB. Free memory was 89.6MB in the beginning and 72.8MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-09 06:51:01,345 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.85ms. Allocated memory is still 132.1MB. Free memory was 72.8MB in the beginning and 69.4MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 06:51:01,346 INFO L158 Benchmark]: Boogie Preprocessor took 69.41ms. Allocated memory is still 132.1MB. Free memory was 69.4MB in the beginning and 66.5MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 06:51:01,346 INFO L158 Benchmark]: RCFGBuilder took 1502.25ms. Allocated memory was 132.1MB in the beginning and 174.1MB in the end (delta: 41.9MB). Free memory was 66.5MB in the beginning and 135.9MB in the end (delta: -69.4MB). Peak memory consumption was 55.8MB. Max. memory is 16.1GB. [2024-11-09 06:51:01,347 INFO L158 Benchmark]: TraceAbstraction took 5489.67ms. Allocated memory was 174.1MB in the beginning and 218.1MB in the end (delta: 44.0MB). Free memory was 135.9MB in the beginning and 135.2MB in the end (delta: 710.6kB). Peak memory consumption was 43.7MB. Max. memory is 16.1GB. [2024-11-09 06:51:01,348 INFO L158 Benchmark]: Witness Printer took 5.73ms. Allocated memory is still 218.1MB. Free memory was 135.2MB in the beginning and 134.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 06:51:01,353 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 132.1MB. Free memory is still 75.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 439.53ms. Allocated memory is still 132.1MB. Free memory was 89.6MB in the beginning and 72.8MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 90.85ms. Allocated memory is still 132.1MB. Free memory was 72.8MB in the beginning and 69.4MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.41ms. Allocated memory is still 132.1MB. Free memory was 69.4MB in the beginning and 66.5MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1502.25ms. Allocated memory was 132.1MB in the beginning and 174.1MB in the end (delta: 41.9MB). Free memory was 66.5MB in the beginning and 135.9MB in the end (delta: -69.4MB). Peak memory consumption was 55.8MB. Max. memory is 16.1GB. * TraceAbstraction took 5489.67ms. Allocated memory was 174.1MB in the beginning and 218.1MB in the end (delta: 44.0MB). Free memory was 135.9MB in the beginning and 135.2MB in the end (delta: 710.6kB). Peak memory consumption was 43.7MB. Max. memory is 16.1GB. * Witness Printer took 5.73ms. Allocated memory is still 218.1MB. Free memory was 135.2MB in the beginning and 134.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 61, overapproximation of bitwiseOr at line 79. Possible FailurePath: [L35] unsigned char isInitial = 0; [L36-L48] struct WrapperStruct00 WrapperStruct00 = { 1, 31.75, -8, 0, 0, 1, 1, -4, 32, -25, 4 }; [L49] unsigned char last_1_WrapperStruct00_var_1_1 = 1; [L50] signed short int last_1_WrapperStruct00_var_1_10 = -4; [L120] isInitial = 1 [L121] FCALL initially() [L122] COND TRUE 1 [L123] CALL updateLastVariables() [L112] EXPR WrapperStruct00.var_1_1 [L112] last_1_WrapperStruct00_var_1_1 = WrapperStruct00.var_1_1 [L113] EXPR WrapperStruct00.var_1_10 [L113] last_1_WrapperStruct00_var_1_10 = WrapperStruct00.var_1_10 [L123] RET updateLastVariables() [L124] CALL updateVariables() [L89] WrapperStruct00.var_1_2 = __VERIFIER_nondet_double() [L90] EXPR WrapperStruct00.var_1_2 [L90] EXPR WrapperStruct00.var_1_2 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_2 <= -1.0e-20F [L90] EXPR WrapperStruct00.var_1_2 [L90] EXPR WrapperStruct00.var_1_2 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_2 <= -1.0e-20F [L90] EXPR (WrapperStruct00.var_1_2 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_2 <= -1.0e-20F) || (WrapperStruct00.var_1_2 <= 9223372.036854776000e+12F && WrapperStruct00.var_1_2 >= 1.0e-20F ) VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_10=-4, last_1_WrapperStruct00_var_1_1=1] [L90] CALL assume_abort_if_not((WrapperStruct00.var_1_2 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_2 <= -1.0e-20F) || (WrapperStruct00.var_1_2 <= 9223372.036854776000e+12F && WrapperStruct00.var_1_2 >= 1.0e-20F )) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct00_var_1_10=-4, last_1_WrapperStruct00_var_1_1=1] [L20] COND FALSE !(!cond) [L90] RET assume_abort_if_not((WrapperStruct00.var_1_2 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_2 <= -1.0e-20F) || (WrapperStruct00.var_1_2 <= 9223372.036854776000e+12F && WrapperStruct00.var_1_2 >= 1.0e-20F )) VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_10=-4, last_1_WrapperStruct00_var_1_1=1] [L91] WrapperStruct00.var_1_4 = __VERIFIER_nondet_char() [L92] EXPR WrapperStruct00.var_1_4 VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_10=-4, last_1_WrapperStruct00_var_1_1=1] [L92] CALL assume_abort_if_not(WrapperStruct00.var_1_4 >= -128) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct00_var_1_10=-4, last_1_WrapperStruct00_var_1_1=1] [L20] COND FALSE !(!cond) [L92] RET assume_abort_if_not(WrapperStruct00.var_1_4 >= -128) VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_10=-4, last_1_WrapperStruct00_var_1_1=1] [L93] EXPR WrapperStruct00.var_1_4 VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_10=-4, last_1_WrapperStruct00_var_1_1=1] [L93] CALL assume_abort_if_not(WrapperStruct00.var_1_4 <= 127) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct00_var_1_10=-4, last_1_WrapperStruct00_var_1_1=1] [L20] COND FALSE !(!cond) [L93] RET assume_abort_if_not(WrapperStruct00.var_1_4 <= 127) VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_10=-4, last_1_WrapperStruct00_var_1_1=1] [L94] EXPR WrapperStruct00.var_1_4 VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_10=-4, last_1_WrapperStruct00_var_1_1=1] [L94] CALL assume_abort_if_not(WrapperStruct00.var_1_4 != 0) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct00_var_1_10=-4, last_1_WrapperStruct00_var_1_1=1] [L20] COND FALSE !(!cond) [L94] RET assume_abort_if_not(WrapperStruct00.var_1_4 != 0) VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_10=-4, last_1_WrapperStruct00_var_1_1=1] [L95] WrapperStruct00.var_1_6 = __VERIFIER_nondet_uchar() [L96] EXPR WrapperStruct00.var_1_6 VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_10=-4, last_1_WrapperStruct00_var_1_1=1] [L96] CALL assume_abort_if_not(WrapperStruct00.var_1_6 >= 0) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct00_var_1_10=-4, last_1_WrapperStruct00_var_1_1=1] [L20] COND FALSE !(!cond) [L96] RET assume_abort_if_not(WrapperStruct00.var_1_6 >= 0) VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_10=-4, last_1_WrapperStruct00_var_1_1=1] [L97] EXPR WrapperStruct00.var_1_6 VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_10=-4, last_1_WrapperStruct00_var_1_1=1] [L97] CALL assume_abort_if_not(WrapperStruct00.var_1_6 <= 0) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct00_var_1_10=-4, last_1_WrapperStruct00_var_1_1=1] [L20] COND FALSE !(!cond) [L97] RET assume_abort_if_not(WrapperStruct00.var_1_6 <= 0) VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_10=-4, last_1_WrapperStruct00_var_1_1=1] [L98] WrapperStruct00.var_1_7 = __VERIFIER_nondet_uchar() [L99] EXPR WrapperStruct00.var_1_7 VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_10=-4, last_1_WrapperStruct00_var_1_1=1] [L99] CALL assume_abort_if_not(WrapperStruct00.var_1_7 >= 0) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct00_var_1_10=-4, last_1_WrapperStruct00_var_1_1=1] [L20] COND FALSE !(!cond) [L99] RET assume_abort_if_not(WrapperStruct00.var_1_7 >= 0) VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_10=-4, last_1_WrapperStruct00_var_1_1=1] [L100] EXPR WrapperStruct00.var_1_7 VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_10=-4, last_1_WrapperStruct00_var_1_1=1] [L100] CALL assume_abort_if_not(WrapperStruct00.var_1_7 <= 0) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct00_var_1_10=-4, last_1_WrapperStruct00_var_1_1=1] [L20] COND FALSE !(!cond) [L100] RET assume_abort_if_not(WrapperStruct00.var_1_7 <= 0) VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_10=-4, last_1_WrapperStruct00_var_1_1=1] [L101] WrapperStruct00.var_1_9 = __VERIFIER_nondet_uchar() [L102] EXPR WrapperStruct00.var_1_9 VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_10=-4, last_1_WrapperStruct00_var_1_1=1] [L102] CALL assume_abort_if_not(WrapperStruct00.var_1_9 >= 1) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct00_var_1_10=-4, last_1_WrapperStruct00_var_1_1=1] [L20] COND FALSE !(!cond) [L102] RET assume_abort_if_not(WrapperStruct00.var_1_9 >= 1) VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_10=-4, last_1_WrapperStruct00_var_1_1=1] [L103] EXPR WrapperStruct00.var_1_9 VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_10=-4, last_1_WrapperStruct00_var_1_1=1] [L103] CALL assume_abort_if_not(WrapperStruct00.var_1_9 <= 1) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct00_var_1_10=-4, last_1_WrapperStruct00_var_1_1=1] [L20] COND FALSE !(!cond) [L103] RET assume_abort_if_not(WrapperStruct00.var_1_9 <= 1) VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_10=-4, last_1_WrapperStruct00_var_1_1=1] [L104] WrapperStruct00.var_1_12 = __VERIFIER_nondet_short() [L105] EXPR WrapperStruct00.var_1_12 VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_10=-4, last_1_WrapperStruct00_var_1_1=1] [L105] CALL assume_abort_if_not(WrapperStruct00.var_1_12 >= -1) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct00_var_1_10=-4, last_1_WrapperStruct00_var_1_1=1] [L20] COND FALSE !(!cond) [L105] RET assume_abort_if_not(WrapperStruct00.var_1_12 >= -1) VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_10=-4, last_1_WrapperStruct00_var_1_1=1] [L106] EXPR WrapperStruct00.var_1_12 VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_10=-4, last_1_WrapperStruct00_var_1_1=1] [L106] CALL assume_abort_if_not(WrapperStruct00.var_1_12 <= 32766) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct00_var_1_10=-4, last_1_WrapperStruct00_var_1_1=1] [L20] COND FALSE !(!cond) [L106] RET assume_abort_if_not(WrapperStruct00.var_1_12 <= 32766) VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_10=-4, last_1_WrapperStruct00_var_1_1=1] [L107] WrapperStruct00.var_1_16 = __VERIFIER_nondet_char() [L108] EXPR WrapperStruct00.var_1_16 VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_10=-4, last_1_WrapperStruct00_var_1_1=1] [L108] CALL assume_abort_if_not(WrapperStruct00.var_1_16 >= -127) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct00_var_1_10=-4, last_1_WrapperStruct00_var_1_1=1] [L20] COND FALSE !(!cond) [L108] RET assume_abort_if_not(WrapperStruct00.var_1_16 >= -127) VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_10=-4, last_1_WrapperStruct00_var_1_1=1] [L109] EXPR WrapperStruct00.var_1_16 VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_10=-4, last_1_WrapperStruct00_var_1_1=1] [L109] CALL assume_abort_if_not(WrapperStruct00.var_1_16 <= 126) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct00_var_1_10=-4, last_1_WrapperStruct00_var_1_1=1] [L20] COND FALSE !(!cond) [L109] RET assume_abort_if_not(WrapperStruct00.var_1_16 <= 126) VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_10=-4, last_1_WrapperStruct00_var_1_1=1] [L124] RET updateVariables() [L125] CALL step() [L54] EXPR WrapperStruct00.var_1_12 [L54] EXPR WrapperStruct00.var_1_4 [L54] COND TRUE last_1_WrapperStruct00_var_1_10 <= (WrapperStruct00.var_1_12 / WrapperStruct00.var_1_4) [L55] COND TRUE \read(last_1_WrapperStruct00_var_1_1) [L56] EXPR WrapperStruct00.var_1_16 [L56] WrapperStruct00.var_1_13 = WrapperStruct00.var_1_16 [L59] EXPR WrapperStruct00.var_1_4 [L59] EXPR WrapperStruct00.var_1_13 [L59] EXPR ((WrapperStruct00.var_1_4) < (WrapperStruct00.var_1_13)) ? (WrapperStruct00.var_1_4) : (WrapperStruct00.var_1_13) [L59] EXPR WrapperStruct00.var_1_13 [L59] EXPR ((WrapperStruct00.var_1_4) < (WrapperStruct00.var_1_13)) ? (WrapperStruct00.var_1_4) : (WrapperStruct00.var_1_13) [L59] signed long int stepLocal_1 = (((WrapperStruct00.var_1_4) < (WrapperStruct00.var_1_13)) ? (WrapperStruct00.var_1_4) : (WrapperStruct00.var_1_13)); [L60] EXPR WrapperStruct00.var_1_13 [L60] EXPR WrapperStruct00.var_1_4 [L60] signed long int stepLocal_0 = WrapperStruct00.var_1_13 / WrapperStruct00.var_1_4; [L61] EXPR WrapperStruct00.var_1_2 [L61] COND TRUE (- WrapperStruct00.var_1_2) >= 16.75 [L62] EXPR WrapperStruct00.var_1_13 [L62] COND TRUE stepLocal_0 >= WrapperStruct00.var_1_13 [L63] COND TRUE stepLocal_1 > -32 [L64] WrapperStruct00.var_1_1 = 0 [L78] EXPR WrapperStruct00.var_1_13 [L78] signed char stepLocal_2 = WrapperStruct00.var_1_13; [L79] EXPR WrapperStruct00.var_1_13 [L79] EXPR WrapperStruct00.var_1_13 [L79] EXPR WrapperStruct00.var_1_13 | WrapperStruct00.var_1_13 [L79] EXPR WrapperStruct00.var_1_4 [L79] COND FALSE !(((WrapperStruct00.var_1_13 | WrapperStruct00.var_1_13) + WrapperStruct00.var_1_4) < stepLocal_2) [L82] WrapperStruct00.var_1_10 = 128 [L84] EXPR WrapperStruct00.var_1_4 [L84] COND FALSE !(1 == WrapperStruct00.var_1_4) [L125] RET step() [L126] CALL, EXPR property() [L116] EXPR WrapperStruct00.var_1_2 [L116] EXPR ((- WrapperStruct00.var_1_2) >= 16.75) ? (((WrapperStruct00.var_1_13 / WrapperStruct00.var_1_4) >= WrapperStruct00.var_1_13) ? ((((((WrapperStruct00.var_1_4) < (WrapperStruct00.var_1_13)) ? (WrapperStruct00.var_1_4) : (WrapperStruct00.var_1_13))) > -32) ? (WrapperStruct00.var_1_1 == ((unsigned char) 0)) : (WrapperStruct00.var_1_1 == ((unsigned char) (WrapperStruct00.var_1_6 || WrapperStruct00.var_1_7)))) : (WrapperStruct00.var_1_6 ? (WrapperStruct00.var_1_1 == ((unsigned char) 1)) : (WrapperStruct00.var_1_1 == ((unsigned char) WrapperStruct00.var_1_7)))) : (WrapperStruct00.var_1_1 == ((unsigned char) 1)) [L116] EXPR WrapperStruct00.var_1_1 [L116] EXPR ((- WrapperStruct00.var_1_2) >= 16.75) ? (((WrapperStruct00.var_1_13 / WrapperStruct00.var_1_4) >= WrapperStruct00.var_1_13) ? ((((((WrapperStruct00.var_1_4) < (WrapperStruct00.var_1_13)) ? (WrapperStruct00.var_1_4) : (WrapperStruct00.var_1_13))) > -32) ? (WrapperStruct00.var_1_1 == ((unsigned char) 0)) : (WrapperStruct00.var_1_1 == ((unsigned char) (WrapperStruct00.var_1_6 || WrapperStruct00.var_1_7)))) : (WrapperStruct00.var_1_6 ? (WrapperStruct00.var_1_1 == ((unsigned char) 1)) : (WrapperStruct00.var_1_1 == ((unsigned char) WrapperStruct00.var_1_7)))) : (WrapperStruct00.var_1_1 == ((unsigned char) 1)) [L116] EXPR (((- WrapperStruct00.var_1_2) >= 16.75) ? (((WrapperStruct00.var_1_13 / WrapperStruct00.var_1_4) >= WrapperStruct00.var_1_13) ? ((((((WrapperStruct00.var_1_4) < (WrapperStruct00.var_1_13)) ? (WrapperStruct00.var_1_4) : (WrapperStruct00.var_1_13))) > -32) ? (WrapperStruct00.var_1_1 == ((unsigned char) 0)) : (WrapperStruct00.var_1_1 == ((unsigned char) (WrapperStruct00.var_1_6 || WrapperStruct00.var_1_7)))) : (WrapperStruct00.var_1_6 ? (WrapperStruct00.var_1_1 == ((unsigned char) 1)) : (WrapperStruct00.var_1_1 == ((unsigned char) WrapperStruct00.var_1_7)))) : (WrapperStruct00.var_1_1 == ((unsigned char) 1))) && ((1 == WrapperStruct00.var_1_4) ? (WrapperStruct00.var_1_8 == ((unsigned char) WrapperStruct00.var_1_9)) : 1) [L116] EXPR ((((- WrapperStruct00.var_1_2) >= 16.75) ? (((WrapperStruct00.var_1_13 / WrapperStruct00.var_1_4) >= WrapperStruct00.var_1_13) ? ((((((WrapperStruct00.var_1_4) < (WrapperStruct00.var_1_13)) ? (WrapperStruct00.var_1_4) : (WrapperStruct00.var_1_13))) > -32) ? (WrapperStruct00.var_1_1 == ((unsigned char) 0)) : (WrapperStruct00.var_1_1 == ((unsigned char) (WrapperStruct00.var_1_6 || WrapperStruct00.var_1_7)))) : (WrapperStruct00.var_1_6 ? (WrapperStruct00.var_1_1 == ((unsigned char) 1)) : (WrapperStruct00.var_1_1 == ((unsigned char) WrapperStruct00.var_1_7)))) : (WrapperStruct00.var_1_1 == ((unsigned char) 1))) && ((1 == WrapperStruct00.var_1_4) ? (WrapperStruct00.var_1_8 == ((unsigned char) WrapperStruct00.var_1_9)) : 1)) && ((((WrapperStruct00.var_1_13 | WrapperStruct00.var_1_13) + WrapperStruct00.var_1_4) < WrapperStruct00.var_1_13) ? (WrapperStruct00.var_1_10 == ((signed short int) (WrapperStruct00.var_1_12 - 256))) : (WrapperStruct00.var_1_10 == ((signed short int) 128))) [L116] EXPR (((((- WrapperStruct00.var_1_2) >= 16.75) ? (((WrapperStruct00.var_1_13 / WrapperStruct00.var_1_4) >= WrapperStruct00.var_1_13) ? ((((((WrapperStruct00.var_1_4) < (WrapperStruct00.var_1_13)) ? (WrapperStruct00.var_1_4) : (WrapperStruct00.var_1_13))) > -32) ? (WrapperStruct00.var_1_1 == ((unsigned char) 0)) : (WrapperStruct00.var_1_1 == ((unsigned char) (WrapperStruct00.var_1_6 || WrapperStruct00.var_1_7)))) : (WrapperStruct00.var_1_6 ? (WrapperStruct00.var_1_1 == ((unsigned char) 1)) : (WrapperStruct00.var_1_1 == ((unsigned char) WrapperStruct00.var_1_7)))) : (WrapperStruct00.var_1_1 == ((unsigned char) 1))) && ((1 == WrapperStruct00.var_1_4) ? (WrapperStruct00.var_1_8 == ((unsigned char) WrapperStruct00.var_1_9)) : 1)) && ((((WrapperStruct00.var_1_13 | WrapperStruct00.var_1_13) + WrapperStruct00.var_1_4) < WrapperStruct00.var_1_13) ? (WrapperStruct00.var_1_10 == ((signed short int) (WrapperStruct00.var_1_12 - 256))) : (WrapperStruct00.var_1_10 == ((signed short int) 128)))) && ((last_1_WrapperStruct00_var_1_10 <= (WrapperStruct00.var_1_12 / WrapperStruct00.var_1_4)) ? (last_1_WrapperStruct00_var_1_1 ? (WrapperStruct00.var_1_13 == ((signed char) WrapperStruct00.var_1_16)) : 1) : 1) [L116-L117] return (((((- WrapperStruct00.var_1_2) >= 16.75) ? (((WrapperStruct00.var_1_13 / WrapperStruct00.var_1_4) >= WrapperStruct00.var_1_13) ? ((((((WrapperStruct00.var_1_4) < (WrapperStruct00.var_1_13)) ? (WrapperStruct00.var_1_4) : (WrapperStruct00.var_1_13))) > -32) ? (WrapperStruct00.var_1_1 == ((unsigned char) 0)) : (WrapperStruct00.var_1_1 == ((unsigned char) (WrapperStruct00.var_1_6 || WrapperStruct00.var_1_7)))) : (WrapperStruct00.var_1_6 ? (WrapperStruct00.var_1_1 == ((unsigned char) 1)) : (WrapperStruct00.var_1_1 == ((unsigned char) WrapperStruct00.var_1_7)))) : (WrapperStruct00.var_1_1 == ((unsigned char) 1))) && ((1 == WrapperStruct00.var_1_4) ? (WrapperStruct00.var_1_8 == ((unsigned char) WrapperStruct00.var_1_9)) : 1)) && ((((WrapperStruct00.var_1_13 | WrapperStruct00.var_1_13) + WrapperStruct00.var_1_4) < WrapperStruct00.var_1_13) ? (WrapperStruct00.var_1_10 == ((signed short int) (WrapperStruct00.var_1_12 - 256))) : (WrapperStruct00.var_1_10 == ((signed short int) 128)))) && ((last_1_WrapperStruct00_var_1_10 <= (WrapperStruct00.var_1_12 / WrapperStruct00.var_1_4)) ? (last_1_WrapperStruct00_var_1_1 ? (WrapperStruct00.var_1_13 == ((signed char) WrapperStruct00.var_1_16)) : 1) : 1) ; [L126] RET, EXPR property() [L126] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_10=-4, last_1_WrapperStruct00_var_1_1=1] [L19] reach_error() VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_10=-4, last_1_WrapperStruct00_var_1_1=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.3s, OverallIterations: 1, TraceHistogramMax: 14, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 3.4s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-09 06:51:01,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 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/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-46.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 53cf1c89f0977ad1ca8f0cd80861a2586d1d5ed487af656b04baa58a1567d392 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 06:51:03,966 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:51:04,058 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2024-11-09 06:51:04,068 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:51:04,070 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:51:04,115 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:51:04,117 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:51:04,117 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:51:04,118 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:51:04,119 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:51:04,120 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 06:51:04,120 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 06:51:04,121 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 06:51:04,123 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 06:51:04,124 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 06:51:04,124 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 06:51:04,125 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:51:04,126 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 06:51:04,126 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 06:51:04,126 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 06:51:04,126 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:51:04,130 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 06:51:04,131 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:51:04,131 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 06:51:04,131 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 06:51:04,132 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-09 06:51:04,132 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:51:04,132 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-09 06:51:04,133 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 06:51:04,133 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 06:51:04,133 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:51:04,134 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:51:04,134 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 06:51:04,134 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:51:04,134 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:51:04,135 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:51:04,135 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:51:04,137 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:51:04,138 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 06:51:04,138 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-09 06:51:04,139 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-09 06:51:04,140 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:51:04,140 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 06:51:04,140 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53cf1c89f0977ad1ca8f0cd80861a2586d1d5ed487af656b04baa58a1567d392 [2024-11-09 06:51:04,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:51:04,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:51:04,602 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:51:04,605 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:51:04,606 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:51:04,608 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-46.i Unable to find full path for "g++" [2024-11-09 06:51:06,874 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:51:07,202 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:51:07,203 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-46.i [2024-11-09 06:51:07,215 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/data/4e87ed486/d3ca5a1025474e49b27686cc7e3bf01f/FLAG2ed64019b [2024-11-09 06:51:07,232 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/data/4e87ed486/d3ca5a1025474e49b27686cc7e3bf01f [2024-11-09 06:51:07,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:51:07,237 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:51:07,239 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:51:07,239 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:51:07,245 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:51:07,246 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:51:07" (1/1) ... [2024-11-09 06:51:07,248 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d881208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:51:07, skipping insertion in model container [2024-11-09 06:51:07,248 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:51:07" (1/1) ... [2024-11-09 06:51:07,282 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:51:07,579 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_8f824608-40a3-4b9c-a538-283e5aa6c5d3/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-46.i[916,929] [2024-11-09 06:51:07,673 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:51:07,690 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:51:07,706 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_8f824608-40a3-4b9c-a538-283e5aa6c5d3/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-46.i[916,929] [2024-11-09 06:51:07,797 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:51:07,848 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:51:07,849 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:51:07 WrapperNode [2024-11-09 06:51:07,849 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:51:07,851 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:51:07,851 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:51:07,851 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:51:07,861 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:51:07" (1/1) ... [2024-11-09 06:51:07,892 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:51:07" (1/1) ... [2024-11-09 06:51:07,964 INFO L138 Inliner]: procedures = 34, calls = 127, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 375 [2024-11-09 06:51:07,964 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:51:07,965 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:51:07,965 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:51:07,966 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:51:07,978 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:51:07" (1/1) ... [2024-11-09 06:51:07,979 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:51:07" (1/1) ... [2024-11-09 06:51:08,017 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:51:07" (1/1) ... [2024-11-09 06:51:08,018 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:51:07" (1/1) ... [2024-11-09 06:51:08,073 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:51:07" (1/1) ... [2024-11-09 06:51:08,086 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:51:07" (1/1) ... [2024-11-09 06:51:08,093 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:51:07" (1/1) ... [2024-11-09 06:51:08,117 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:51:07" (1/1) ... [2024-11-09 06:51:08,134 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:51:08,143 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:51:08,143 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:51:08,143 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:51:08,144 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:51:07" (1/1) ... [2024-11-09 06:51:08,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:51:08,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:51:08,214 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 06:51:08,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 06:51:08,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 06:51:08,263 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2024-11-09 06:51:08,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2024-11-09 06:51:08,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2024-11-09 06:51:08,263 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2024-11-09 06:51:08,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-09 06:51:08,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2024-11-09 06:51:08,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2024-11-09 06:51:08,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2024-11-09 06:51:08,267 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 06:51:08,267 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 06:51:08,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:51:08,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:51:08,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2024-11-09 06:51:08,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2024-11-09 06:51:08,463 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:51:08,466 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:51:09,488 INFO L? ?]: Removed 90 outVars from TransFormulas that were not future-live. [2024-11-09 06:51:09,488 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:51:09,514 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:51:09,514 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 06:51:09,514 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:51:09 BoogieIcfgContainer [2024-11-09 06:51:09,515 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:51:09,520 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:51:09,520 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:51:09,523 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:51:09,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:51:07" (1/3) ... [2024-11-09 06:51:09,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e81e465 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:51:09, skipping insertion in model container [2024-11-09 06:51:09,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:51:07" (2/3) ... [2024-11-09 06:51:09,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e81e465 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:51:09, skipping insertion in model container [2024-11-09 06:51:09,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:51:09" (3/3) ... [2024-11-09 06:51:09,528 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-46.i [2024-11-09 06:51:09,548 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:51:09,548 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 06:51:09,627 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:51:09,634 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;@19ef45f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:51:09,635 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 06:51:09,640 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 76 states have (on average 1.4078947368421053) internal successors, (107), 77 states have internal predecessors, (107), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-09 06:51:09,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-09 06:51:09,660 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:51:09,661 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:51:09,662 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:51:09,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:51:09,668 INFO L85 PathProgramCache]: Analyzing trace with hash 2126536310, now seen corresponding path program 1 times [2024-11-09 06:51:09,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:51:09,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [739471220] [2024-11-09 06:51:09,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:51:09,690 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 [2024-11-09 06:51:09,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:51:09,694 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:51:09,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:51:10,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:51:10,078 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-09 06:51:10,091 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:51:10,149 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2024-11-09 06:51:10,149 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:51:10,150 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:51:10,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [739471220] [2024-11-09 06:51:10,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [739471220] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:51:10,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:51:10,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 06:51:10,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484091548] [2024-11-09 06:51:10,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:51:10,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 06:51:10,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:51:10,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 06:51:10,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 06:51:10,192 INFO L87 Difference]: Start difference. First operand has 93 states, 76 states have (on average 1.4078947368421053) internal successors, (107), 77 states have internal predecessors, (107), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-09 06:51:10,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:51:10,233 INFO L93 Difference]: Finished difference Result 179 states and 278 transitions. [2024-11-09 06:51:10,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 06:51:10,236 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 114 [2024-11-09 06:51:10,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:51:10,246 INFO L225 Difference]: With dead ends: 179 [2024-11-09 06:51:10,246 INFO L226 Difference]: Without dead ends: 89 [2024-11-09 06:51:10,251 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 06:51:10,255 INFO L432 NwaCegarLoop]: 128 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, 128 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 [2024-11-09 06:51:10,256 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 06:51:10,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-09 06:51:10,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-11-09 06:51:10,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 73 states have (on average 1.36986301369863) internal successors, (100), 73 states have internal predecessors, (100), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-09 06:51:10,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 128 transitions. [2024-11-09 06:51:10,326 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 128 transitions. Word has length 114 [2024-11-09 06:51:10,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:51:10,327 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 128 transitions. [2024-11-09 06:51:10,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-09 06:51:10,328 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 128 transitions. [2024-11-09 06:51:10,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-09 06:51:10,332 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:51:10,332 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:51:10,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:51:10,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:51:10,534 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:51:10,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:51:10,535 INFO L85 PathProgramCache]: Analyzing trace with hash 2112898650, now seen corresponding path program 1 times [2024-11-09 06:51:10,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:51:10,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [347578693] [2024-11-09 06:51:10,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:51:10,537 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 [2024-11-09 06:51:10,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:51:10,541 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:51:10,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:51:11,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:51:11,047 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-09 06:51:11,069 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:51:11,233 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 102 treesize of output 10 [2024-11-09 06:51:11,299 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 0 case distinctions, treesize of input 31 treesize of output 34 [2024-11-09 06:51:13,716 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:51:13,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 45 treesize of output 50 [2024-11-09 06:51:14,519 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:51:14,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 55 treesize of output 63 [2024-11-09 06:51:15,142 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:51:15,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 65 treesize of output 76 [2024-11-09 06:51:15,750 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:51:15,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 75 treesize of output 89 [2024-11-09 06:51:16,581 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:51:16,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 90 treesize of output 92 [2024-11-09 06:51:17,243 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:51:17,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 90 treesize of output 92 [2024-11-09 06:51:18,456 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:51:18,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 105 treesize of output 99 [2024-11-09 06:51:18,667 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:51:18,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 130 treesize of output 52 [2024-11-09 06:51:18,775 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-09 06:51:18,776 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:51:18,776 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:51:18,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [347578693] [2024-11-09 06:51:18,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [347578693] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:51:18,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:51:18,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 06:51:18,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138499114] [2024-11-09 06:51:18,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:51:18,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 06:51:18,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:51:18,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 06:51:18,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=63, Unknown=1, NotChecked=0, Total=110 [2024-11-09 06:51:18,787 INFO L87 Difference]: Start difference. First operand 89 states and 128 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-09 06:51:22,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:51:22,330 INFO L93 Difference]: Finished difference Result 316 states and 456 transitions. [2024-11-09 06:51:22,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:51:22,332 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 114 [2024-11-09 06:51:22,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:51:22,338 INFO L225 Difference]: With dead ends: 316 [2024-11-09 06:51:22,338 INFO L226 Difference]: Without dead ends: 230 [2024-11-09 06:51:22,342 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=56, Invalid=75, Unknown=1, NotChecked=0, Total=132 [2024-11-09 06:51:22,343 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 278 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:51:22,347 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 458 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-09 06:51:22,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-11-09 06:51:22,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 225. [2024-11-09 06:51:22,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 192 states have (on average 1.4010416666666667) internal successors, (269), 193 states have internal predecessors, (269), 29 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-09 06:51:22,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 327 transitions. [2024-11-09 06:51:22,409 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 327 transitions. Word has length 114 [2024-11-09 06:51:22,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:51:22,410 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 327 transitions. [2024-11-09 06:51:22,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-09 06:51:22,411 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 327 transitions. [2024-11-09 06:51:22,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-09 06:51:22,414 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:51:22,415 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:51:22,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:51:22,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:51:22,619 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:51:22,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:51:22,621 INFO L85 PathProgramCache]: Analyzing trace with hash -902204968, now seen corresponding path program 1 times [2024-11-09 06:51:22,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:51:22,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [170747652] [2024-11-09 06:51:22,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:51:22,622 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 [2024-11-09 06:51:22,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:51:22,629 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:51:22,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:51:23,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:51:23,019 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 06:51:23,033 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:51:23,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:51:23,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:51:23,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:51:23,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 31 [2024-11-09 06:51:23,240 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:51:23,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 56 treesize of output 50 [2024-11-09 06:51:25,505 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:51:25,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 55 treesize of output 63 [2024-11-09 06:51:26,170 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:51:26,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 65 treesize of output 76 [2024-11-09 06:51:26,839 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:51:26,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 80 treesize of output 79 [2024-11-09 06:51:27,344 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:51:27,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 75 treesize of output 89 [2024-11-09 06:51:28,006 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:51:28,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 85 treesize of output 102 [2024-11-09 06:51:28,712 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:51:28,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 100 treesize of output 105 [2024-11-09 06:51:29,948 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:51:29,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 115 treesize of output 112 [2024-11-09 06:51:30,187 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:51:30,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 125 treesize of output 118 [2024-11-09 06:51:30,418 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:51:30,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 111 treesize of output 51 [2024-11-09 06:51:30,509 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 300 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-09 06:51:30,510 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:51:30,510 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:51:30,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [170747652] [2024-11-09 06:51:30,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [170747652] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:51:30,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:51:30,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-09 06:51:30,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292377889] [2024-11-09 06:51:30,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:51:30,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 06:51:30,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:51:30,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 06:51:30,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=83, Unknown=1, NotChecked=0, Total=132 [2024-11-09 06:51:30,517 INFO L87 Difference]: Start difference. First operand 225 states and 327 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-09 06:51:34,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:51:34,063 INFO L93 Difference]: Finished difference Result 555 states and 806 transitions. [2024-11-09 06:51:34,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 06:51:34,064 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 114 [2024-11-09 06:51:34,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:51:34,069 INFO L225 Difference]: With dead ends: 555 [2024-11-09 06:51:34,069 INFO L226 Difference]: Without dead ends: 333 [2024-11-09 06:51:34,071 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=52, Invalid=103, Unknown=1, NotChecked=0, Total=156 [2024-11-09 06:51:34,072 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 119 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:51:34,072 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 430 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-09 06:51:34,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2024-11-09 06:51:34,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 280. [2024-11-09 06:51:34,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 232 states have (on average 1.3793103448275863) internal successors, (320), 233 states have internal predecessors, (320), 43 states have call successors, (43), 4 states have call predecessors, (43), 4 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-09 06:51:34,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 406 transitions. [2024-11-09 06:51:34,164 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 406 transitions. Word has length 114 [2024-11-09 06:51:34,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:51:34,165 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 406 transitions. [2024-11-09 06:51:34,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-09 06:51:34,165 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 406 transitions. [2024-11-09 06:51:34,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-09 06:51:34,168 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:51:34,168 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:51:34,184 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:51:34,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:51:34,369 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:51:34,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:51:34,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1489010982, now seen corresponding path program 1 times [2024-11-09 06:51:34,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:51:34,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [576181437] [2024-11-09 06:51:34,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:51:34,371 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 [2024-11-09 06:51:34,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:51:34,378 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:51:34,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:51:34,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:51:34,659 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 06:51:34,663 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:51:34,686 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 12 treesize of output 8 [2024-11-09 06:51:34,718 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:51:34,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 34 treesize of output 36 [2024-11-09 06:51:34,822 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:51:34,823 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 58 treesize of output 34 [2024-11-09 06:51:34,858 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-09 06:51:34,859 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:51:34,859 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:51:34,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [576181437] [2024-11-09 06:51:34,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [576181437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:51:34,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:51:34,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 06:51:34,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082426758] [2024-11-09 06:51:34,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:51:34,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:51:34,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:51:34,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:51:34,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:51:34,865 INFO L87 Difference]: Start difference. First operand 280 states and 406 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 06:51:36,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:51:36,433 INFO L93 Difference]: Finished difference Result 864 states and 1252 transitions. [2024-11-09 06:51:36,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 06:51:36,434 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 114 [2024-11-09 06:51:36,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:51:36,440 INFO L225 Difference]: With dead ends: 864 [2024-11-09 06:51:36,440 INFO L226 Difference]: Without dead ends: 642 [2024-11-09 06:51:36,442 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-09 06:51:36,443 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 194 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:51:36,444 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 414 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 06:51:36,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2024-11-09 06:51:36,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 473. [2024-11-09 06:51:36,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 401 states have (on average 1.3690773067331672) internal successors, (549), 405 states have internal predecessors, (549), 64 states have call successors, (64), 7 states have call predecessors, (64), 7 states have return successors, (64), 60 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-09 06:51:36,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 677 transitions. [2024-11-09 06:51:36,551 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 677 transitions. Word has length 114 [2024-11-09 06:51:36,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:51:36,552 INFO L471 AbstractCegarLoop]: Abstraction has 473 states and 677 transitions. [2024-11-09 06:51:36,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 06:51:36,552 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 677 transitions. [2024-11-09 06:51:36,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-09 06:51:36,556 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:51:36,556 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:51:36,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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)] Ended with exit code 0 [2024-11-09 06:51:36,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:51:36,757 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:51:36,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:51:36,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1988444331, now seen corresponding path program 1 times [2024-11-09 06:51:36,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:51:36,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [234455882] [2024-11-09 06:51:36,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:51:36,759 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 [2024-11-09 06:51:36,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:51:36,761 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:51:36,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:51:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:51:37,032 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:51:37,036 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:51:37,088 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 [2024-11-09 06:51:37,139 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-09 06:51:37,139 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:51:37,140 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:51:37,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [234455882] [2024-11-09 06:51:37,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [234455882] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:51:37,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:51:37,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:51:37,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670772142] [2024-11-09 06:51:37,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:51:37,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:51:37,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:51:37,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:51:37,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:51:37,144 INFO L87 Difference]: Start difference. First operand 473 states and 677 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 06:51:40,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:51:40,253 INFO L93 Difference]: Finished difference Result 1154 states and 1640 transitions. [2024-11-09 06:51:40,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:51:40,255 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 116 [2024-11-09 06:51:40,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:51:40,261 INFO L225 Difference]: With dead ends: 1154 [2024-11-09 06:51:40,261 INFO L226 Difference]: Without dead ends: 743 [2024-11-09 06:51:40,262 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:51:40,264 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 56 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:51:40,264 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 332 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-09 06:51:40,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2024-11-09 06:51:40,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 599. [2024-11-09 06:51:40,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 522 states have (on average 1.3754789272030652) internal successors, (718), 528 states have internal predecessors, (718), 66 states have call successors, (66), 10 states have call predecessors, (66), 10 states have return successors, (66), 60 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-09 06:51:40,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 850 transitions. [2024-11-09 06:51:40,362 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 850 transitions. Word has length 116 [2024-11-09 06:51:40,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:51:40,363 INFO L471 AbstractCegarLoop]: Abstraction has 599 states and 850 transitions. [2024-11-09 06:51:40,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 06:51:40,363 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 850 transitions. [2024-11-09 06:51:40,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-09 06:51:40,366 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:51:40,366 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:51:40,375 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:51:40,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:51:40,567 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:51:40,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:51:40,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1913495955, now seen corresponding path program 1 times [2024-11-09 06:51:40,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:51:40,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1048001062] [2024-11-09 06:51:40,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:51:40,569 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 [2024-11-09 06:51:40,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:51:40,573 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:51:40,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:51:40,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:51:40,842 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:51:40,844 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:51:40,880 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-09 06:51:40,880 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:51:40,880 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:51:40,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1048001062] [2024-11-09 06:51:40,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1048001062] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:51:40,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:51:40,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:51:40,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859713686] [2024-11-09 06:51:40,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:51:40,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:51:40,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:51:40,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:51:40,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:51:40,883 INFO L87 Difference]: Start difference. First operand 599 states and 850 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 06:51:41,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:51:41,022 INFO L93 Difference]: Finished difference Result 1154 states and 1641 transitions. [2024-11-09 06:51:41,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:51:41,022 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 116 [2024-11-09 06:51:41,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:51:41,026 INFO L225 Difference]: With dead ends: 1154 [2024-11-09 06:51:41,026 INFO L226 Difference]: Without dead ends: 621 [2024-11-09 06:51:41,028 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:51:41,028 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 0 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:51:41,029 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 483 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:51:41,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2024-11-09 06:51:41,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 621. [2024-11-09 06:51:41,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 544 states have (on average 1.3602941176470589) internal successors, (740), 550 states have internal predecessors, (740), 66 states have call successors, (66), 10 states have call predecessors, (66), 10 states have return successors, (66), 60 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-09 06:51:41,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 872 transitions. [2024-11-09 06:51:41,100 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 872 transitions. Word has length 116 [2024-11-09 06:51:41,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:51:41,101 INFO L471 AbstractCegarLoop]: Abstraction has 621 states and 872 transitions. [2024-11-09 06:51:41,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 06:51:41,101 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 872 transitions. [2024-11-09 06:51:41,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-09 06:51:41,105 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:51:41,105 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:51:41,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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)] Forceful destruction successful, exit code 0 [2024-11-09 06:51:41,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:51:41,306 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:51:41,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:51:41,307 INFO L85 PathProgramCache]: Analyzing trace with hash 173010533, now seen corresponding path program 1 times [2024-11-09 06:51:41,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:51:41,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [578156169] [2024-11-09 06:51:41,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:51:41,308 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 [2024-11-09 06:51:41,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:51:41,312 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:51:41,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:51:41,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:51:41,664 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 06:51:41,672 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:51:41,676 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 20 treesize of output 21 [2024-11-09 06:51:43,691 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_skolemized_q#valueAsBitvector_22| (_ BitVec 64))) (let ((.cse0 (select |c_#memory_int| |c_~#WrapperStruct00~0.base|))) (and (= ((_ extract 31 0) |v_skolemized_q#valueAsBitvector_22|) (select .cse0 (bvadd (_ bv1 32) |c_~#WrapperStruct00~0.offset|))) (= (select .cse0 (bvadd (_ bv5 32) |c_~#WrapperStruct00~0.offset|)) ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_22|))))) is different from true [2024-11-09 06:51:43,816 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:51:43,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 35 treesize of output 37 [2024-11-09 06:51:44,286 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:51:44,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 45 treesize of output 50 [2024-11-09 06:51:44,716 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:51:44,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 53 [2024-11-09 06:51:45,035 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:51:45,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 53 [2024-11-09 06:51:45,330 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:51:45,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 55 treesize of output 63 [2024-11-09 06:51:45,714 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:51:45,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 65 treesize of output 76 [2024-11-09 06:51:46,911 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:51:46,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 134 treesize of output 115 [2024-11-09 06:51:47,222 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:51:47,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 101 treesize of output 115 [2024-11-09 06:51:47,696 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:51:47,697 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 148 treesize of output 54 [2024-11-09 06:51:48,800 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 52 not checked. [2024-11-09 06:51:48,800 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:51:49,542 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-09 06:51:49,542 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:51:49,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [578156169] [2024-11-09 06:51:49,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [578156169] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 06:51:49,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:51:49,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2024-11-09 06:51:49,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837048718] [2024-11-09 06:51:49,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:51:49,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:51:49,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:51:49,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:51:49,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=123, Unknown=1, NotChecked=24, Total=210 [2024-11-09 06:51:49,545 INFO L87 Difference]: Start difference. First operand 621 states and 872 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 06:51:51,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:51:51,238 INFO L93 Difference]: Finished difference Result 1481 states and 2082 transitions. [2024-11-09 06:51:51,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:51:51,241 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 116 [2024-11-09 06:51:51,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:51:51,246 INFO L225 Difference]: With dead ends: 1481 [2024-11-09 06:51:51,247 INFO L226 Difference]: Without dead ends: 926 [2024-11-09 06:51:51,249 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=68, Invalid=145, Unknown=1, NotChecked=26, Total=240 [2024-11-09 06:51:51,250 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 48 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:51:51,250 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 414 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-09 06:51:51,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2024-11-09 06:51:51,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 647. [2024-11-09 06:51:51,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 570 states have (on average 1.343859649122807) internal successors, (766), 576 states have internal predecessors, (766), 66 states have call successors, (66), 10 states have call predecessors, (66), 10 states have return successors, (66), 60 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-09 06:51:51,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 898 transitions. [2024-11-09 06:51:51,362 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 898 transitions. Word has length 116 [2024-11-09 06:51:51,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:51:51,363 INFO L471 AbstractCegarLoop]: Abstraction has 647 states and 898 transitions. [2024-11-09 06:51:51,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 06:51:51,363 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 898 transitions. [2024-11-09 06:51:51,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-09 06:51:51,365 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:51:51,366 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:51:51,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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)] Ended with exit code 0 [2024-11-09 06:51:51,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:51:51,567 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:51:51,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:51:51,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1874226729, now seen corresponding path program 1 times [2024-11-09 06:51:51,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:51:51,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64432739] [2024-11-09 06:51:51,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:51:51,568 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 [2024-11-09 06:51:51,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:51:51,569 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:51:51,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:51:51,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:51:51,903 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 06:51:51,909 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:51:51,917 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 19 treesize of output 1 [2024-11-09 06:51:52,195 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 0 case distinctions, treesize of input 42 treesize of output 20 [2024-11-09 06:51:52,325 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 0 case distinctions, treesize of input 37 treesize of output 30 [2024-11-09 06:51:52,800 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:51:52,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 48 treesize of output 33 [2024-11-09 06:51:52,859 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:51:52,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 52 treesize of output 33 [2024-11-09 06:51:52,930 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:51:52,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 54 treesize of output 44 [2024-11-09 06:51:53,205 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:51:53,205 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 98 treesize of output 44 [2024-11-09 06:51:53,331 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 212 proven. 24 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-09 06:51:53,331 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:51:53,666 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-09 06:51:53,666 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:51:53,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64432739] [2024-11-09 06:51:53,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [64432739] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 06:51:53,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:51:53,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 17 [2024-11-09 06:51:53,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99410783] [2024-11-09 06:51:53,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:51:53,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:51:53,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:51:53,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:51:53,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-11-09 06:51:53,668 INFO L87 Difference]: Start difference. First operand 647 states and 898 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 06:51:54,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:51:54,745 INFO L93 Difference]: Finished difference Result 1376 states and 1901 transitions. [2024-11-09 06:51:54,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 06:51:54,746 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 116 [2024-11-09 06:51:54,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:51:54,750 INFO L225 Difference]: With dead ends: 1376 [2024-11-09 06:51:54,750 INFO L226 Difference]: Without dead ends: 799 [2024-11-09 06:51:54,752 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2024-11-09 06:51:54,753 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 76 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 06:51:54,753 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 574 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 06:51:54,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2024-11-09 06:51:54,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 775. [2024-11-09 06:51:54,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 661 states have (on average 1.3237518910741302) internal successors, (875), 669 states have internal predecessors, (875), 96 states have call successors, (96), 17 states have call predecessors, (96), 17 states have return successors, (96), 88 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-09 06:51:54,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1067 transitions. [2024-11-09 06:51:54,852 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1067 transitions. Word has length 116 [2024-11-09 06:51:54,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:51:54,853 INFO L471 AbstractCegarLoop]: Abstraction has 775 states and 1067 transitions. [2024-11-09 06:51:54,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 06:51:54,853 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1067 transitions. [2024-11-09 06:51:54,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-09 06:51:54,855 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:51:54,855 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:51:54,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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)] Forceful destruction successful, exit code 0 [2024-11-09 06:51:55,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:51:55,056 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:51:55,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:51:55,057 INFO L85 PathProgramCache]: Analyzing trace with hash -889550514, now seen corresponding path program 1 times [2024-11-09 06:51:55,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:51:55,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [772462430] [2024-11-09 06:51:55,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:51:55,057 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 [2024-11-09 06:51:55,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:51:55,059 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:51:55,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 (10)] Waiting until timeout for monitored process [2024-11-09 06:51:55,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:51:55,483 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 06:51:55,486 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:51:55,496 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 [2024-11-09 06:51:55,502 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 0 case distinctions, treesize of input 25 treesize of output 25 [2024-11-09 06:51:55,609 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:51:55,609 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 78 treesize of output 42 [2024-11-09 06:51:55,707 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-09 06:51:55,707 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:51:55,707 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:51:55,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [772462430] [2024-11-09 06:51:55,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [772462430] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:51:55,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:51:55,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 06:51:55,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405685841] [2024-11-09 06:51:55,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:51:55,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:51:55,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:51:55,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:51:55,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:51:55,710 INFO L87 Difference]: Start difference. First operand 775 states and 1067 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 06:51:56,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:51:56,838 INFO L93 Difference]: Finished difference Result 1758 states and 2423 transitions. [2024-11-09 06:51:56,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:51:56,839 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 118 [2024-11-09 06:51:56,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:51:56,845 INFO L225 Difference]: With dead ends: 1758 [2024-11-09 06:51:56,845 INFO L226 Difference]: Without dead ends: 1057 [2024-11-09 06:51:56,848 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-09 06:51:56,849 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 76 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 06:51:56,849 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 600 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 06:51:56,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2024-11-09 06:51:56,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 735. [2024-11-09 06:51:56,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 623 states have (on average 1.3130016051364366) internal successors, (818), 630 states have internal predecessors, (818), 95 states have call successors, (95), 16 states have call predecessors, (95), 16 states have return successors, (95), 88 states have call predecessors, (95), 95 states have call successors, (95) [2024-11-09 06:51:56,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 1008 transitions. [2024-11-09 06:51:56,986 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 1008 transitions. Word has length 118 [2024-11-09 06:51:56,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:51:56,987 INFO L471 AbstractCegarLoop]: Abstraction has 735 states and 1008 transitions. [2024-11-09 06:51:56,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 06:51:56,987 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 1008 transitions. [2024-11-09 06:51:56,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-09 06:51:56,990 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:51:56,991 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:51:57,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 (10)] Ended with exit code 0 [2024-11-09 06:51:57,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:51:57,192 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:51:57,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:51:57,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1698897140, now seen corresponding path program 1 times [2024-11-09 06:51:57,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:51:57,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1352266709] [2024-11-09 06:51:57,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:51:57,193 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 [2024-11-09 06:51:57,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:51:57,194 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:51:57,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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)] Waiting until timeout for monitored process [2024-11-09 06:51:57,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:51:57,540 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 06:51:57,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:51:57,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:51:57,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:51:57,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:51:57,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:51:57,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:51:57,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:51:57,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:51:57,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:51:57,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:51:57,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:51:57,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:51:57,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:51:57,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:51:57,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:51:57,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:51:57,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:51:57,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:51:57,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:51:57,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:51:57,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:51:57,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:51:57,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 21 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 91 [2024-11-09 06:51:58,060 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:51:58,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 121 treesize of output 118 [2024-11-09 06:51:58,969 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:51:58,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 110 treesize of output 109 [2024-11-09 06:52:00,407 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:52:00,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 100 treesize of output 96 [2024-11-09 06:52:01,289 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:52:01,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 85 treesize of output 93 [2024-11-09 06:52:02,091 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:52:02,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 90 treesize of output 83 [2024-11-09 06:52:02,854 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:52:02,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 80 treesize of output 70 [2024-11-09 06:52:03,334 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:52:03,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 65 treesize of output 67 [2024-11-09 06:52:03,971 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:52:03,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 66 treesize of output 66 [2024-11-09 06:52:04,203 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:52:04,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 115 treesize of output 105 [2024-11-09 06:52:04,892 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:52:04,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 126 treesize of output 60 [2024-11-09 06:52:05,006 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 332 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 06:52:05,006 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:52:05,538 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-09 06:52:05,539 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:52:05,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1352266709] [2024-11-09 06:52:05,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1352266709] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 06:52:05,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:52:05,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2024-11-09 06:52:05,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612624597] [2024-11-09 06:52:05,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:52:05,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:52:05,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:52:05,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:52:05,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2024-11-09 06:52:05,541 INFO L87 Difference]: Start difference. First operand 735 states and 1008 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 06:52:06,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:52:06,615 INFO L93 Difference]: Finished difference Result 1405 states and 1926 transitions. [2024-11-09 06:52:06,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:52:06,617 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 118 [2024-11-09 06:52:06,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:52:06,622 INFO L225 Difference]: With dead ends: 1405 [2024-11-09 06:52:06,622 INFO L226 Difference]: Without dead ends: 740 [2024-11-09 06:52:06,624 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2024-11-09 06:52:06,625 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 102 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 06:52:06,626 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 269 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 06:52:06,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2024-11-09 06:52:06,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 685. [2024-11-09 06:52:06,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 573 states have (on average 1.300174520069808) internal successors, (745), 579 states have internal predecessors, (745), 94 states have call successors, (94), 17 states have call predecessors, (94), 17 states have return successors, (94), 88 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-09 06:52:06,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 933 transitions. [2024-11-09 06:52:06,761 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 933 transitions. Word has length 118 [2024-11-09 06:52:06,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:52:06,762 INFO L471 AbstractCegarLoop]: Abstraction has 685 states and 933 transitions. [2024-11-09 06:52:06,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 06:52:06,763 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 933 transitions. [2024-11-09 06:52:06,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-09 06:52:06,765 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:52:06,765 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:52:06,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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)] Ended with exit code 0 [2024-11-09 06:52:06,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:52:06,967 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:52:06,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:52:06,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1138277541, now seen corresponding path program 1 times [2024-11-09 06:52:06,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:52:06,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1474220497] [2024-11-09 06:52:06,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:52:06,969 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 [2024-11-09 06:52:06,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:52:06,973 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:52:06,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:52:07,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:52:07,387 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-09 06:52:07,393 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:52:07,399 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 19 treesize of output 1 [2024-11-09 06:52:07,487 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 0 case distinctions, treesize of input 31 treesize of output 15 [2024-11-09 06:52:07,571 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 0 case distinctions, treesize of input 31 treesize of output 15 [2024-11-09 06:52:07,647 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 0 case distinctions, treesize of input 26 treesize of output 25 [2024-11-09 06:52:07,842 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:52:07,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 41 treesize of output 28 [2024-11-09 06:52:08,120 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:52:08,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 37 treesize of output 28 [2024-11-09 06:52:08,161 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:52:08,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 47 treesize of output 43 [2024-11-09 06:52:08,380 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:52:08,380 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 48 treesize of output 24 [2024-11-09 06:52:08,435 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 247 proven. 24 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-11-09 06:52:08,435 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:52:08,958 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 15 proven. 24 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 06:52:08,959 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:52:08,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1474220497] [2024-11-09 06:52:08,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1474220497] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:52:08,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1475260262] [2024-11-09 06:52:08,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:52:08,960 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:52:08,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:52:08,961 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:52:08,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2024-11-09 06:52:10,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:52:10,158 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-09 06:52:10,166 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:52:10,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:10,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:10,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:10,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:10,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:10,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:10,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:10,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:10,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:10,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:10,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:10,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:10,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:10,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:10,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:10,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:10,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:10,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:10,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:10,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:10,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:10,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 57 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 65 [2024-11-09 06:52:10,586 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:52:10,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 45 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 87 treesize of output 89 [2024-11-09 06:52:11,210 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:52:11,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 80 treesize of output 82 [2024-11-09 06:52:12,207 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:52:12,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 69 treesize of output 79 [2024-11-09 06:52:13,058 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:52:13,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 72 treesize of output 71 [2024-11-09 06:52:13,783 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:52:13,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 64 treesize of output 60 [2024-11-09 06:52:14,285 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:52:14,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 56 treesize of output 49 [2024-11-09 06:52:14,710 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:52:14,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 46 [2024-11-09 06:52:15,276 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:52:15,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 45 [2024-11-09 06:52:15,334 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:52:15,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 54 treesize of output 58 [2024-11-09 06:52:15,787 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:52:15,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 76 treesize of output 40 [2024-11-09 06:52:15,963 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 332 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 06:52:15,963 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:52:22,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1475260262] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:52:22,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315683544] [2024-11-09 06:52:22,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:52:22,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:52:22,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:52:22,859 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:52:22,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 06:52:23,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:52:23,240 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 06:52:23,246 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:52:23,278 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 0 case distinctions, treesize of input 26 treesize of output 25 [2024-11-09 06:52:23,650 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:52:23,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 41 treesize of output 28 [2024-11-09 06:52:23,802 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:52:23,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 41 treesize of output 28 [2024-11-09 06:52:23,952 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:52:23,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 36 treesize of output 38 [2024-11-09 06:52:24,513 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:52:24,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 47 treesize of output 41 [2024-11-09 06:52:24,567 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:52:24,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 57 treesize of output 65 [2024-11-09 06:52:24,982 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:52:24,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 63 treesize of output 27 [2024-11-09 06:52:25,039 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 231 proven. 24 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-09 06:52:25,039 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:52:25,454 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 15 proven. 24 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 06:52:25,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315683544] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:52:25,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2024-11-09 06:52:25,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 12, 10, 7] total 27 [2024-11-09 06:52:25,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906147320] [2024-11-09 06:52:25,455 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2024-11-09 06:52:25,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-09 06:52:25,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:52:25,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-09 06:52:25,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=766, Unknown=0, NotChecked=0, Total=930 [2024-11-09 06:52:25,458 INFO L87 Difference]: Start difference. First operand 685 states and 933 transitions. Second operand has 27 states, 25 states have (on average 6.72) internal successors, (168), 27 states have internal predecessors, (168), 14 states have call successors, (45), 12 states have call predecessors, (45), 14 states have return successors, (45), 12 states have call predecessors, (45), 14 states have call successors, (45) [2024-11-09 06:52:45,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:52:45,985 INFO L93 Difference]: Finished difference Result 1632 states and 2132 transitions. [2024-11-09 06:52:45,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-09 06:52:45,986 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 6.72) internal successors, (168), 27 states have internal predecessors, (168), 14 states have call successors, (45), 12 states have call predecessors, (45), 14 states have return successors, (45), 12 states have call predecessors, (45), 14 states have call successors, (45) Word has length 118 [2024-11-09 06:52:45,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:52:45,991 INFO L225 Difference]: With dead ends: 1632 [2024-11-09 06:52:45,991 INFO L226 Difference]: Without dead ends: 1017 [2024-11-09 06:52:45,995 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 761 GetRequests, 669 SyntacticMatches, 3 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2389 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=1375, Invalid=6815, Unknown=0, NotChecked=0, Total=8190 [2024-11-09 06:52:45,996 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 707 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 1707 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 1914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 1707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:52:45,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 954 Invalid, 1914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 1707 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2024-11-09 06:52:45,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2024-11-09 06:52:46,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 872. [2024-11-09 06:52:46,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 738 states have (on average 1.2723577235772359) internal successors, (939), 746 states have internal predecessors, (939), 94 states have call successors, (94), 39 states have call predecessors, (94), 39 states have return successors, (94), 86 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-09 06:52:46,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1127 transitions. [2024-11-09 06:52:46,168 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1127 transitions. Word has length 118 [2024-11-09 06:52:46,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:52:46,168 INFO L471 AbstractCegarLoop]: Abstraction has 872 states and 1127 transitions. [2024-11-09 06:52:46,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 6.72) internal successors, (168), 27 states have internal predecessors, (168), 14 states have call successors, (45), 12 states have call predecessors, (45), 14 states have return successors, (45), 12 states have call predecessors, (45), 14 states have call successors, (45) [2024-11-09 06:52:46,169 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1127 transitions. [2024-11-09 06:52:46,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-09 06:52:46,171 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:52:46,171 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:52:46,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2024-11-09 06:52:46,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:52:46,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-09 06:52:46,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:52:46,773 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:52:46,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:52:46,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1241217170, now seen corresponding path program 1 times [2024-11-09 06:52:46,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:52:46,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2113302620] [2024-11-09 06:52:46,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:52:46,774 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 [2024-11-09 06:52:46,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:52:46,778 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:52:46,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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)] Waiting until timeout for monitored process [2024-11-09 06:52:47,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:52:47,077 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 06:52:47,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:52:47,139 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:52:47,140 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 52 treesize of output 22 [2024-11-09 06:52:47,217 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-09 06:52:47,218 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:52:47,218 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:52:47,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2113302620] [2024-11-09 06:52:47,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2113302620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:52:47,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:52:47,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:52:47,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175899206] [2024-11-09 06:52:47,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:52:47,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:52:47,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:52:47,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:52:47,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:52:47,220 INFO L87 Difference]: Start difference. First operand 872 states and 1127 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 06:52:48,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:52:48,217 INFO L93 Difference]: Finished difference Result 1618 states and 2089 transitions. [2024-11-09 06:52:48,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:52:48,228 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 118 [2024-11-09 06:52:48,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:52:48,232 INFO L225 Difference]: With dead ends: 1618 [2024-11-09 06:52:48,232 INFO L226 Difference]: Without dead ends: 930 [2024-11-09 06:52:48,234 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:52:48,235 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 32 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 06:52:48,235 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 434 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 06:52:48,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2024-11-09 06:52:48,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 926. [2024-11-09 06:52:48,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 788 states have (on average 1.2690355329949239) internal successors, (1000), 798 states have internal predecessors, (1000), 96 states have call successors, (96), 41 states have call predecessors, (96), 41 states have return successors, (96), 86 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-09 06:52:48,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1192 transitions. [2024-11-09 06:52:48,443 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1192 transitions. Word has length 118 [2024-11-09 06:52:48,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:52:48,444 INFO L471 AbstractCegarLoop]: Abstraction has 926 states and 1192 transitions. [2024-11-09 06:52:48,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 06:52:48,444 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1192 transitions. [2024-11-09 06:52:48,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-09 06:52:48,447 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:52:48,447 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:52:48,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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)] Ended with exit code 0 [2024-11-09 06:52:48,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:52:48,648 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:52:48,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:52:48,649 INFO L85 PathProgramCache]: Analyzing trace with hash 431870544, now seen corresponding path program 1 times [2024-11-09 06:52:48,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:52:48,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1378812620] [2024-11-09 06:52:48,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:52:48,650 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 [2024-11-09 06:52:48,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:52:48,651 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:52:48,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 (16)] Waiting until timeout for monitored process [2024-11-09 06:52:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:52:49,055 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 06:52:49,059 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:52:49,065 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 14 treesize of output 10 [2024-11-09 06:52:49,095 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:52:49,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 32 treesize of output 34 [2024-11-09 06:52:49,270 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:52:49,270 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 60 treesize of output 30 [2024-11-09 06:52:49,329 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-09 06:52:49,330 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:52:49,330 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:52:49,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1378812620] [2024-11-09 06:52:49,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1378812620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:52:49,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:52:49,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 06:52:49,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827589213] [2024-11-09 06:52:49,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:52:49,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:52:49,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:52:49,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:52:49,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:52:49,332 INFO L87 Difference]: Start difference. First operand 926 states and 1192 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 06:52:51,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:52:51,672 INFO L93 Difference]: Finished difference Result 1762 states and 2271 transitions. [2024-11-09 06:52:51,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 06:52:51,673 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 118 [2024-11-09 06:52:51,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:52:51,679 INFO L225 Difference]: With dead ends: 1762 [2024-11-09 06:52:51,680 INFO L226 Difference]: Without dead ends: 1093 [2024-11-09 06:52:51,681 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-11-09 06:52:51,682 INFO L432 NwaCegarLoop]: 190 mSDtfsCounter, 176 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:52:51,683 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 907 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 06:52:51,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1093 states. [2024-11-09 06:52:51,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1093 to 1042. [2024-11-09 06:52:51,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1042 states, 864 states have (on average 1.2430555555555556) internal successors, (1074), 874 states have internal predecessors, (1074), 124 states have call successors, (124), 53 states have call predecessors, (124), 53 states have return successors, (124), 114 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-09 06:52:51,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1322 transitions. [2024-11-09 06:52:51,953 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1322 transitions. Word has length 118 [2024-11-09 06:52:51,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:52:51,953 INFO L471 AbstractCegarLoop]: Abstraction has 1042 states and 1322 transitions. [2024-11-09 06:52:51,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 06:52:51,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1322 transitions. [2024-11-09 06:52:51,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-09 06:52:51,956 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:52:51,956 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:52:51,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 (16)] Ended with exit code 0 [2024-11-09 06:52:52,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:52:52,158 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:52:52,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:52:52,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1499382608, now seen corresponding path program 1 times [2024-11-09 06:52:52,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:52:52,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [825817526] [2024-11-09 06:52:52,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:52:52,160 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 [2024-11-09 06:52:52,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:52:52,163 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:52:52,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:52:52,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:52:52,502 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 06:52:52,506 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:52:52,516 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 [2024-11-09 06:52:52,550 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:52:52,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 33 treesize of output 35 [2024-11-09 06:52:52,654 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:52:52,655 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 39 treesize of output 15 [2024-11-09 06:52:52,690 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-09 06:52:52,691 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:52:52,691 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:52:52,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [825817526] [2024-11-09 06:52:52,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [825817526] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:52:52,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:52:52,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:52:52,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661578078] [2024-11-09 06:52:52,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:52:52,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:52:52,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:52:52,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:52:52,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:52:52,694 INFO L87 Difference]: Start difference. First operand 1042 states and 1322 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 06:52:53,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:52:53,909 INFO L93 Difference]: Finished difference Result 1887 states and 2391 transitions. [2024-11-09 06:52:53,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:52:53,911 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 118 [2024-11-09 06:52:53,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:52:53,914 INFO L225 Difference]: With dead ends: 1887 [2024-11-09 06:52:53,915 INFO L226 Difference]: Without dead ends: 1028 [2024-11-09 06:52:53,916 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:52:53,917 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 53 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:52:53,918 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 442 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 06:52:53,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2024-11-09 06:52:54,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 974. [2024-11-09 06:52:54,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 798 states have (on average 1.2380952380952381) internal successors, (988), 806 states have internal predecessors, (988), 122 states have call successors, (122), 53 states have call predecessors, (122), 53 states have return successors, (122), 114 states have call predecessors, (122), 122 states have call successors, (122) [2024-11-09 06:52:54,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1232 transitions. [2024-11-09 06:52:54,157 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1232 transitions. Word has length 118 [2024-11-09 06:52:54,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:52:54,158 INFO L471 AbstractCegarLoop]: Abstraction has 974 states and 1232 transitions. [2024-11-09 06:52:54,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 06:52:54,158 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1232 transitions. [2024-11-09 06:52:54,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-09 06:52:54,159 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:52:54,160 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:52:54,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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)] Forceful destruction successful, exit code 0 [2024-11-09 06:52:54,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:52:54,360 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:52:54,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:52:54,361 INFO L85 PathProgramCache]: Analyzing trace with hash 663849567, now seen corresponding path program 1 times [2024-11-09 06:52:54,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:52:54,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1132637258] [2024-11-09 06:52:54,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:52:54,362 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 [2024-11-09 06:52:54,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:52:54,365 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:52:54,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:52:54,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:52:54,827 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-09 06:52:54,834 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:52:54,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:54,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:54,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:54,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:54,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:54,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:54,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:54,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:54,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:54,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:54,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:54,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:54,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:54,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:54,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:54,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:54,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:54,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:54,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:54,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:54,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:54,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 21 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 91 [2024-11-09 06:52:55,488 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:52:55,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 111 treesize of output 138 [2024-11-09 06:52:58,688 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:52:58,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 125 treesize of output 145 [2024-11-09 06:53:02,620 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:53:02,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 130 treesize of output 135 [2024-11-09 06:53:05,840 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:53:05,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 115 treesize of output 132 [2024-11-09 06:53:08,991 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:53:08,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 120 treesize of output 122 [2024-11-09 06:53:11,879 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:53:11,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 110 treesize of output 109 [2024-11-09 06:53:14,735 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:53:14,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 95 treesize of output 106 [2024-11-09 06:53:17,915 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:53:17,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 96 treesize of output 105 [2024-11-09 06:53:18,042 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:53:18,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 100 treesize of output 96 [2024-11-09 06:53:20,431 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:53:20,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 103 treesize of output 108 [2024-11-09 06:53:20,728 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:53:20,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 119 treesize of output 47 [2024-11-09 06:53:20,836 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 332 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 06:53:20,836 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:53:23,332 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-09 06:53:23,332 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:53:23,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1132637258] [2024-11-09 06:53:23,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1132637258] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 06:53:23,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:53:23,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 17 [2024-11-09 06:53:23,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161893082] [2024-11-09 06:53:23,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:53:23,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:53:23,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:53:23,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:53:23,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=179, Unknown=8, NotChecked=0, Total=272 [2024-11-09 06:53:23,335 INFO L87 Difference]: Start difference. First operand 974 states and 1232 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 06:53:28,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:53:28,826 INFO L93 Difference]: Finished difference Result 1762 states and 2228 transitions. [2024-11-09 06:53:28,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:53:28,830 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 118 [2024-11-09 06:53:28,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:53:28,834 INFO L225 Difference]: With dead ends: 1762 [2024-11-09 06:53:28,835 INFO L226 Difference]: Without dead ends: 966 [2024-11-09 06:53:28,836 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 20.5s TimeCoverageRelationStatistics Valid=90, Invalid=208, Unknown=8, NotChecked=0, Total=306 [2024-11-09 06:53:28,837 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 54 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:53:28,837 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 406 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-09 06:53:28,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2024-11-09 06:53:29,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 964. [2024-11-09 06:53:29,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 788 states have (on average 1.234771573604061) internal successors, (973), 796 states have internal predecessors, (973), 122 states have call successors, (122), 53 states have call predecessors, (122), 53 states have return successors, (122), 114 states have call predecessors, (122), 122 states have call successors, (122) [2024-11-09 06:53:29,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1217 transitions. [2024-11-09 06:53:29,086 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1217 transitions. Word has length 118 [2024-11-09 06:53:29,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:53:29,087 INFO L471 AbstractCegarLoop]: Abstraction has 964 states and 1217 transitions. [2024-11-09 06:53:29,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 06:53:29,088 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1217 transitions. [2024-11-09 06:53:29,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-09 06:53:29,089 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:53:29,089 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:53:29,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:53:29,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:53:29,291 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:53:29,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:53:29,293 INFO L85 PathProgramCache]: Analyzing trace with hash -88965294, now seen corresponding path program 1 times [2024-11-09 06:53:29,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:53:29,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1090567749] [2024-11-09 06:53:29,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:53:29,294 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 [2024-11-09 06:53:29,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:53:29,298 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:53:29,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:53:29,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:53:29,648 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-09 06:53:29,654 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:53:29,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:53:29,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:53:29,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:53:29,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:53:29,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:53:29,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:53:29,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:53:29,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:53:29,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:53:29,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:53:29,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:53:29,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:53:29,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:53:29,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:53:29,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:53:29,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:53:29,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:53:29,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:53:29,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:53:29,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:53:29,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:53:29,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 21 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 91 [2024-11-09 06:53:30,100 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:53:30,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 121 treesize of output 118 [2024-11-09 06:53:30,774 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:53:30,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 105 treesize of output 119 [2024-11-09 06:53:32,462 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:53:32,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 110 treesize of output 109 [2024-11-09 06:53:33,472 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:53:33,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 95 treesize of output 106 [2024-11-09 06:53:34,509 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:53:34,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 100 treesize of output 96 [2024-11-09 06:53:35,481 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:53:35,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 85 treesize of output 93 [2024-11-09 06:53:36,260 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:53:36,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 90 treesize of output 83 [2024-11-09 06:53:37,721 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:53:37,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 96 treesize of output 87 [2024-11-09 06:53:38,074 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:53:38,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 140 treesize of output 94 [2024-11-09 06:53:38,723 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:53:38,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 116 treesize of output 56 [2024-11-09 06:53:38,865 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 332 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 06:53:38,865 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:53:39,451 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-09 06:53:39,451 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:53:39,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1090567749] [2024-11-09 06:53:39,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1090567749] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 06:53:39,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:53:39,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 17 [2024-11-09 06:53:39,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834571936] [2024-11-09 06:53:39,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:53:39,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:53:39,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:53:39,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:53:39,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2024-11-09 06:53:39,455 INFO L87 Difference]: Start difference. First operand 964 states and 1217 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 06:53:40,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:53:40,838 INFO L93 Difference]: Finished difference Result 1679 states and 2121 transitions. [2024-11-09 06:53:40,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:53:40,840 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 118 [2024-11-09 06:53:40,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:53:40,845 INFO L225 Difference]: With dead ends: 1679 [2024-11-09 06:53:40,845 INFO L226 Difference]: Without dead ends: 962 [2024-11-09 06:53:40,847 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2024-11-09 06:53:40,848 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 49 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:53:40,849 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 425 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 06:53:40,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2024-11-09 06:53:41,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 958. [2024-11-09 06:53:41,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 782 states have (on average 1.2314578005115089) internal successors, (963), 790 states have internal predecessors, (963), 122 states have call successors, (122), 53 states have call predecessors, (122), 53 states have return successors, (122), 114 states have call predecessors, (122), 122 states have call successors, (122) [2024-11-09 06:53:41,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1207 transitions. [2024-11-09 06:53:41,140 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1207 transitions. Word has length 118 [2024-11-09 06:53:41,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:53:41,140 INFO L471 AbstractCegarLoop]: Abstraction has 958 states and 1207 transitions. [2024-11-09 06:53:41,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 06:53:41,141 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1207 transitions. [2024-11-09 06:53:41,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-09 06:53:41,143 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:53:41,143 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:53:41,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:53:41,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:53:41,347 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:53:41,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:53:41,348 INFO L85 PathProgramCache]: Analyzing trace with hash -924498335, now seen corresponding path program 1 times [2024-11-09 06:53:41,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:53:41,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [748184815] [2024-11-09 06:53:41,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:53:41,349 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 [2024-11-09 06:53:41,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:53:41,353 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:53:41,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 (20)] Waiting until timeout for monitored process [2024-11-09 06:53:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:53:41,842 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-09 06:53:41,850 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:53:41,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:53:41,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:53:41,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:53:41,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:53:41,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:53:41,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:53:41,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 41 [2024-11-09 06:53:42,072 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:53:42,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 71 treesize of output 53 [2024-11-09 06:53:42,320 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:53:42,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 53 [2024-11-09 06:53:43,233 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:53:43,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 67 treesize of output 78 [2024-11-09 06:53:43,938 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:53:43,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 77 treesize of output 82 [2024-11-09 06:53:44,582 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:53:44,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 77 treesize of output 91 [2024-11-09 06:53:45,354 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:53:45,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 92 treesize of output 85 [2024-11-09 06:53:45,986 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:53:45,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 77 treesize of output 82 [2024-11-09 06:53:46,876 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:53:46,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 78 treesize of output 81 [2024-11-09 06:53:46,964 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:53:46,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 82 treesize of output 81 [2024-11-09 06:53:47,392 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:53:47,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 105 treesize of output 45 [2024-11-09 06:53:47,583 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 51 proven. 278 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-09 06:53:47,583 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:53:57,066 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:53:57,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [748184815] [2024-11-09 06:53:57,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [748184815] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:53:57,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1767384085] [2024-11-09 06:53:57,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:53:57,066 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:53:57,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:53:57,068 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:53:57,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2024-11-09 06:53:58,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:53:58,361 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-09 06:53:58,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:53:58,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:53:58,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:53:58,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:53:58,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:53:58,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:53:58,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:53:58,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:53:58,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:53:58,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:53:58,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:53:58,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:53:58,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:53:58,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:53:58,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:53:58,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:53:58,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 51 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 49 [2024-11-09 06:53:58,824 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:53:58,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 28 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 65 treesize of output 83 [2024-11-09 06:54:01,601 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:54:01,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 80 treesize of output 82 [2024-11-09 06:54:04,758 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:54:04,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 72 treesize of output 78 [2024-11-09 06:54:05,320 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:54:05,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 69 treesize of output 79 [2024-11-09 06:54:08,152 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:54:08,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 69 treesize of output 86 [2024-11-09 06:54:09,124 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:54:09,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 80 treesize of output 89 [2024-11-09 06:54:09,796 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:54:09,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 80 treesize of output 82 [2024-11-09 06:54:10,813 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:54:10,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 72 treesize of output 78 [2024-11-09 06:54:10,903 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:54:10,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 72 treesize of output 71 [2024-11-09 06:54:11,865 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:54:11,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 83 treesize of output 43 [2024-11-09 06:54:12,216 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 32 proven. 260 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 06:54:12,216 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:54:16,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1767384085] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:54:16,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537095116] [2024-11-09 06:54:16,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:54:16,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:54:16,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:54:16,959 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:54:16,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-09 06:54:17,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:54:17,373 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-09 06:54:17,379 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:54:17,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:54:17,395 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 97 treesize of output 21 [2024-11-09 06:54:18,196 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:54:18,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 61 treesize of output 31 [2024-11-09 06:54:18,736 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:54:18,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 50 treesize of output 31 [2024-11-09 06:54:19,169 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:54:19,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 45 treesize of output 41 [2024-11-09 06:54:19,922 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:54:19,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 60 treesize of output 44 [2024-11-09 06:54:20,626 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:54:20,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 60 treesize of output 44 [2024-11-09 06:54:21,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 44 [2024-11-09 06:54:23,479 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:54:23,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 71 treesize of output 58 [2024-11-09 06:54:28,554 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:54:28,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 87 treesize of output 75 [2024-11-09 06:54:30,387 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:54:30,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 91 treesize of output 66 [2024-11-09 06:54:32,407 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:54:32,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 87 treesize of output 39 [2024-11-09 06:54:33,614 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 253 proven. 9 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-09 06:54:33,615 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:54:50,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537095116] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:54:50,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:54:50,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 12] total 35 [2024-11-09 06:54:50,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477901731] [2024-11-09 06:54:50,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:54:50,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-09 06:54:50,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:54:50,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-09 06:54:50,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1925, Unknown=3, NotChecked=0, Total=2550 [2024-11-09 06:54:50,424 INFO L87 Difference]: Start difference. First operand 958 states and 1207 transitions. Second operand has 36 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 16 states have call successors, (42), 14 states have call predecessors, (42), 16 states have return successors, (42), 15 states have call predecessors, (42), 16 states have call successors, (42) [2024-11-09 06:55:17,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:55:22,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:55:25,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:55:28,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:55:37,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:56:04,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:56:04,086 INFO L93 Difference]: Finished difference Result 2226 states and 2814 transitions. [2024-11-09 06:56:04,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-09 06:56:04,087 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 16 states have call successors, (42), 14 states have call predecessors, (42), 16 states have return successors, (42), 15 states have call predecessors, (42), 16 states have call successors, (42) Word has length 118 [2024-11-09 06:56:04,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:56:04,095 INFO L225 Difference]: With dead ends: 2226 [2024-11-09 06:56:04,096 INFO L226 Difference]: Without dead ends: 1438 [2024-11-09 06:56:04,100 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 653 GetRequests, 561 SyntacticMatches, 5 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2558 ImplicationChecksByTransitivity, 63.0s TimeCoverageRelationStatistics Valid=1850, Invalid=5979, Unknown=3, NotChecked=0, Total=7832 [2024-11-09 06:56:04,100 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 606 mSDsluCounter, 1386 mSDsCounter, 0 mSdLazyCounter, 2871 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 1451 SdHoareTripleChecker+Invalid, 3072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 2871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.9s IncrementalHoareTripleChecker+Time [2024-11-09 06:56:04,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [606 Valid, 1451 Invalid, 3072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 2871 Invalid, 0 Unknown, 0 Unchecked, 52.9s Time] [2024-11-09 06:56:04,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2024-11-09 06:56:04,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 1209. [2024-11-09 06:56:04,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1209 states, 988 states have (on average 1.236842105263158) internal successors, (1222), 997 states have internal predecessors, (1222), 154 states have call successors, (154), 66 states have call predecessors, (154), 66 states have return successors, (154), 145 states have call predecessors, (154), 154 states have call successors, (154) [2024-11-09 06:56:04,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1530 transitions. [2024-11-09 06:56:04,466 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1530 transitions. Word has length 118 [2024-11-09 06:56:04,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:56:04,467 INFO L471 AbstractCegarLoop]: Abstraction has 1209 states and 1530 transitions. [2024-11-09 06:56:04,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 16 states have call successors, (42), 14 states have call predecessors, (42), 16 states have return successors, (42), 15 states have call predecessors, (42), 16 states have call successors, (42) [2024-11-09 06:56:04,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1530 transitions. [2024-11-09 06:56:04,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-09 06:56:04,470 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:56:04,470 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:56:04,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 (20)] Forceful destruction successful, exit code 0 [2024-11-09 06:56:04,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2024-11-09 06:56:04,893 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-09 06:56:05,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:56:05,072 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:56:05,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:56:05,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1468487688, now seen corresponding path program 1 times [2024-11-09 06:56:05,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:56:05,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [665558864] [2024-11-09 06:56:05,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:56:05,073 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 [2024-11-09 06:56:05,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:56:05,077 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:56:05,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 (23)] Waiting until timeout for monitored process [2024-11-09 06:56:05,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:56:05,542 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 06:56:05,549 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:56:05,653 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 25 treesize of output 10 [2024-11-09 06:56:06,041 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:56:06,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 81 treesize of output 53 [2024-11-09 06:56:06,764 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:56:06,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 91 treesize of output 66 [2024-11-09 06:56:07,336 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:56:07,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 91 treesize of output 72 [2024-11-09 06:56:07,808 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:56:07,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 86 treesize of output 82 [2024-11-09 06:56:08,508 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:56:08,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 101 treesize of output 85 [2024-11-09 06:56:09,065 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:56:09,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 101 treesize of output 85 [2024-11-09 06:56:10,090 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:56:10,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 152 treesize of output 104 [2024-11-09 06:56:10,450 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:56:10,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 147 treesize of output 131 [2024-11-09 06:56:10,917 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:56:10,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 194 treesize of output 86 [2024-11-09 06:56:18,441 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 268 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-09 06:56:18,441 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:56:18,441 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:56:18,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [665558864] [2024-11-09 06:56:18,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [665558864] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:56:18,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:56:18,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-09 06:56:18,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195794040] [2024-11-09 06:56:18,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:56:18,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 06:56:18,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:56:18,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 06:56:18,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2024-11-09 06:56:18,444 INFO L87 Difference]: Start difference. First operand 1209 states and 1530 transitions. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-09 06:56:20,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:56:26,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:56:30,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:56:35,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:56:38,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:56:40,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:56:41,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:56:44,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:56:48,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:56:49,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:56:52,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:56:54,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:56:56,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:56:58,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:57:00,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:57:02,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:57:06,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:57:08,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:57:10,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:57:13,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:57:15,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:57:18,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:57:21,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:57:28,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:57:31,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:57:31,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:57:31,875 INFO L93 Difference]: Finished difference Result 3691 states and 4621 transitions. [2024-11-09 06:57:31,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 06:57:31,877 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 119 [2024-11-09 06:57:31,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:57:31,887 INFO L225 Difference]: With dead ends: 3691 [2024-11-09 06:57:31,887 INFO L226 Difference]: Without dead ends: 2606 [2024-11-09 06:57:31,889 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2024-11-09 06:57:31,890 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 398 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 27 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:57:31,890 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 378 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 605 Invalid, 14 Unknown, 0 Unchecked, 72.4s Time] [2024-11-09 06:57:31,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2606 states. [2024-11-09 06:57:32,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2606 to 1753. [2024-11-09 06:57:32,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1753 states, 1371 states have (on average 1.2035010940919038) internal successors, (1650), 1384 states have internal predecessors, (1650), 262 states have call successors, (262), 119 states have call predecessors, (262), 119 states have return successors, (262), 249 states have call predecessors, (262), 262 states have call successors, (262) [2024-11-09 06:57:32,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1753 states to 1753 states and 2174 transitions. [2024-11-09 06:57:32,410 INFO L78 Accepts]: Start accepts. Automaton has 1753 states and 2174 transitions. Word has length 119 [2024-11-09 06:57:32,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:57:32,411 INFO L471 AbstractCegarLoop]: Abstraction has 1753 states and 2174 transitions. [2024-11-09 06:57:32,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-09 06:57:32,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1753 states and 2174 transitions. [2024-11-09 06:57:32,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-09 06:57:32,413 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:57:32,413 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:57:32,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 (23)] Ended with exit code 0 [2024-11-09 06:57:32,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:57:32,617 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:57:32,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:57:32,617 INFO L85 PathProgramCache]: Analyzing trace with hash -824593338, now seen corresponding path program 1 times [2024-11-09 06:57:32,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:57:32,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [272840454] [2024-11-09 06:57:32,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:57:32,618 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 [2024-11-09 06:57:32,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:57:32,621 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:57:32,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 (24)] Waiting until timeout for monitored process [2024-11-09 06:57:32,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:57:32,927 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 06:57:32,929 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:57:32,957 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-09 06:57:32,957 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:57:32,957 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:57:32,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [272840454] [2024-11-09 06:57:32,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [272840454] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:57:32,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:57:32,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:57:32,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239018320] [2024-11-09 06:57:32,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:57:32,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:57:32,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:57:32,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:57:32,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:57:32,959 INFO L87 Difference]: Start difference. First operand 1753 states and 2174 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 06:57:33,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:57:33,397 INFO L93 Difference]: Finished difference Result 3407 states and 4229 transitions. [2024-11-09 06:57:33,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:57:33,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 119 [2024-11-09 06:57:33,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:57:33,405 INFO L225 Difference]: With dead ends: 3407 [2024-11-09 06:57:33,405 INFO L226 Difference]: Without dead ends: 1753 [2024-11-09 06:57:33,407 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:57:33,407 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 0 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:57:33,408 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 368 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:57:33,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2024-11-09 06:57:33,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 1753. [2024-11-09 06:57:33,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1753 states, 1371 states have (on average 1.1940189642596646) internal successors, (1637), 1384 states have internal predecessors, (1637), 262 states have call successors, (262), 119 states have call predecessors, (262), 119 states have return successors, (262), 249 states have call predecessors, (262), 262 states have call successors, (262) [2024-11-09 06:57:33,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1753 states to 1753 states and 2161 transitions. [2024-11-09 06:57:33,992 INFO L78 Accepts]: Start accepts. Automaton has 1753 states and 2161 transitions. Word has length 119 [2024-11-09 06:57:33,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:57:33,993 INFO L471 AbstractCegarLoop]: Abstraction has 1753 states and 2161 transitions. [2024-11-09 06:57:33,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 06:57:33,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1753 states and 2161 transitions. [2024-11-09 06:57:33,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-09 06:57:33,995 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:57:33,995 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:57:34,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 (24)] Forceful destruction successful, exit code 0 [2024-11-09 06:57:34,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:57:34,196 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:57:34,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:57:34,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1652171424, now seen corresponding path program 1 times [2024-11-09 06:57:34,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:57:34,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1424321414] [2024-11-09 06:57:34,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:57:34,198 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 [2024-11-09 06:57:34,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:57:34,201 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:57:34,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:57:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:57:34,519 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 06:57:34,522 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:57:34,617 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-09 06:57:34,617 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:57:34,618 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:57:34,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1424321414] [2024-11-09 06:57:34,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1424321414] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:57:34,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:57:34,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 06:57:34,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319536370] [2024-11-09 06:57:34,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:57:34,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:57:34,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:57:34,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:57:34,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:57:34,620 INFO L87 Difference]: Start difference. First operand 1753 states and 2161 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 06:57:35,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:57:35,278 INFO L93 Difference]: Finished difference Result 1803 states and 2222 transitions. [2024-11-09 06:57:35,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:57:35,279 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 120 [2024-11-09 06:57:35,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:57:35,285 INFO L225 Difference]: With dead ends: 1803 [2024-11-09 06:57:35,285 INFO L226 Difference]: Without dead ends: 1801 [2024-11-09 06:57:35,286 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:57:35,286 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 0 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:57:35,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 605 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:57:35,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1801 states. [2024-11-09 06:57:35,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1801 to 1801. [2024-11-09 06:57:35,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1801 states, 1419 states have (on average 1.1874559548978154) internal successors, (1685), 1432 states have internal predecessors, (1685), 262 states have call successors, (262), 119 states have call predecessors, (262), 119 states have return successors, (262), 249 states have call predecessors, (262), 262 states have call successors, (262) [2024-11-09 06:57:35,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1801 states to 1801 states and 2209 transitions. [2024-11-09 06:57:35,759 INFO L78 Accepts]: Start accepts. Automaton has 1801 states and 2209 transitions. Word has length 120 [2024-11-09 06:57:35,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:57:35,760 INFO L471 AbstractCegarLoop]: Abstraction has 1801 states and 2209 transitions. [2024-11-09 06:57:35,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 06:57:35,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1801 states and 2209 transitions. [2024-11-09 06:57:35,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-09 06:57:35,764 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:57:35,764 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:57:35,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:57:35,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:57:35,965 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:57:35,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:57:35,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1467321825, now seen corresponding path program 1 times [2024-11-09 06:57:35,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:57:35,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1734205161] [2024-11-09 06:57:35,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:57:35,966 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 [2024-11-09 06:57:35,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:57:35,970 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:57:35,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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)] Waiting until timeout for monitored process [2024-11-09 06:57:36,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:57:36,327 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 06:57:36,330 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:57:36,335 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 14 treesize of output 10 [2024-11-09 06:57:36,547 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 0 case distinctions, treesize of input 41 treesize of output 19 [2024-11-09 06:57:36,740 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 0 case distinctions, treesize of input 41 treesize of output 19 [2024-11-09 06:57:36,941 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 0 case distinctions, treesize of input 41 treesize of output 19 [2024-11-09 06:57:37,103 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 0 case distinctions, treesize of input 36 treesize of output 29 [2024-11-09 06:57:37,583 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:57:37,583 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 31 treesize of output 13 [2024-11-09 06:57:37,635 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 251 proven. 24 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2024-11-09 06:57:37,636 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:57:38,243 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 15 proven. 24 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 06:57:38,243 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:57:38,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1734205161] [2024-11-09 06:57:38,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1734205161] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:57:38,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1312711674] [2024-11-09 06:57:38,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:57:38,244 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:57:38,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:57:38,246 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:57:38,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2024-11-09 06:57:39,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:57:39,610 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 06:57:39,616 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:57:39,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 8 [2024-11-09 06:57:39,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 12 [2024-11-09 06:57:39,895 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 12 [2024-11-09 06:57:40,163 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 20 [2024-11-09 06:57:40,470 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:57:40,470 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 1 case distinctions, treesize of input 29 treesize of output 31 [2024-11-09 06:57:40,854 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:57:40,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 42 [2024-11-09 06:57:41,333 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:57:41,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 45 [2024-11-09 06:57:41,702 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:57:41,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 53 [2024-11-09 06:57:44,071 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:57:44,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 81 treesize of output 41 [2024-11-09 06:57:44,561 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 304 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-09 06:57:44,562 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:57:44,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1312711674] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:57:44,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:57:44,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9, 7] total 23 [2024-11-09 06:57:44,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232064763] [2024-11-09 06:57:44,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:57:44,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 06:57:44,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:57:44,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 06:57:44,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2024-11-09 06:57:44,564 INFO L87 Difference]: Start difference. First operand 1801 states and 2209 transitions. Second operand has 11 states, 11 states have (on average 6.0) internal successors, (66), 10 states have internal predecessors, (66), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-09 06:57:51,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:57:51,836 INFO L93 Difference]: Finished difference Result 3522 states and 4314 transitions. [2024-11-09 06:57:51,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 06:57:51,841 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 10 states have internal predecessors, (66), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 121 [2024-11-09 06:57:51,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:57:51,850 INFO L225 Difference]: With dead ends: 3522 [2024-11-09 06:57:51,850 INFO L226 Difference]: Without dead ends: 2059 [2024-11-09 06:57:51,853 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 337 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2024-11-09 06:57:51,854 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 337 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-11-09 06:57:51,855 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 428 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2024-11-09 06:57:51,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2059 states. [2024-11-09 06:57:52,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2059 to 1798. [2024-11-09 06:57:52,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1798 states, 1416 states have (on average 1.1836158192090396) internal successors, (1676), 1429 states have internal predecessors, (1676), 262 states have call successors, (262), 119 states have call predecessors, (262), 119 states have return successors, (262), 249 states have call predecessors, (262), 262 states have call successors, (262) [2024-11-09 06:57:52,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 2200 transitions. [2024-11-09 06:57:52,345 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 2200 transitions. Word has length 121 [2024-11-09 06:57:52,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:57:52,345 INFO L471 AbstractCegarLoop]: Abstraction has 1798 states and 2200 transitions. [2024-11-09 06:57:52,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 10 states have internal predecessors, (66), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-09 06:57:52,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 2200 transitions. [2024-11-09 06:57:52,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-09 06:57:52,347 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:57:52,348 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:57:52,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2024-11-09 06:57:52,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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)] Ended with exit code 0 [2024-11-09 06:57:52,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:57:52,749 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:57:52,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:57:52,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1842120703, now seen corresponding path program 1 times [2024-11-09 06:57:52,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:57:52,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1951512580] [2024-11-09 06:57:52,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:57:52,755 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 [2024-11-09 06:57:52,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:57:52,756 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:57:52,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:57:53,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:57:53,138 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 06:57:53,141 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:57:53,151 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 12 treesize of output 8 [2024-11-09 06:57:53,189 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:57:53,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 34 treesize of output 36 [2024-11-09 06:57:53,316 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:57:53,316 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 58 treesize of output 34 [2024-11-09 06:57:53,424 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-09 06:57:53,424 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:57:53,424 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:57:53,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1951512580] [2024-11-09 06:57:53,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1951512580] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:57:53,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:57:53,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 06:57:53,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501558649] [2024-11-09 06:57:53,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:57:53,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 06:57:53,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:57:53,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 06:57:53,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:57:53,427 INFO L87 Difference]: Start difference. First operand 1798 states and 2200 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 06:57:56,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:57:56,551 INFO L93 Difference]: Finished difference Result 4954 states and 6050 transitions. [2024-11-09 06:57:56,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 06:57:56,552 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 121 [2024-11-09 06:57:56,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:57:56,563 INFO L225 Difference]: With dead ends: 4954 [2024-11-09 06:57:56,564 INFO L226 Difference]: Without dead ends: 3384 [2024-11-09 06:57:56,567 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-11-09 06:57:56,568 INFO L432 NwaCegarLoop]: 227 mSDtfsCounter, 200 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:57:56,568 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 1198 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-09 06:57:56,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3384 states. [2024-11-09 06:57:57,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3384 to 1910. [2024-11-09 06:57:57,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1910 states, 1528 states have (on average 1.1943717277486912) internal successors, (1825), 1541 states have internal predecessors, (1825), 262 states have call successors, (262), 119 states have call predecessors, (262), 119 states have return successors, (262), 249 states have call predecessors, (262), 262 states have call successors, (262) [2024-11-09 06:57:57,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1910 states to 1910 states and 2349 transitions. [2024-11-09 06:57:57,040 INFO L78 Accepts]: Start accepts. Automaton has 1910 states and 2349 transitions. Word has length 121 [2024-11-09 06:57:57,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:57:57,040 INFO L471 AbstractCegarLoop]: Abstraction has 1910 states and 2349 transitions. [2024-11-09 06:57:57,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 06:57:57,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1910 states and 2349 transitions. [2024-11-09 06:57:57,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-09 06:57:57,042 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:57:57,043 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:57:57,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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)] Forceful destruction successful, exit code 0 [2024-11-09 06:57:57,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:57:57,243 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:57:57,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:57:57,244 INFO L85 PathProgramCache]: Analyzing trace with hash 2072036635, now seen corresponding path program 1 times [2024-11-09 06:57:57,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:57:57,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712738633] [2024-11-09 06:57:57,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:57:57,244 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 [2024-11-09 06:57:57,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:57:57,245 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:57:57,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 (29)] Waiting until timeout for monitored process [2024-11-09 06:57:57,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:57:57,608 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 06:57:57,611 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:57:57,616 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 [2024-11-09 06:57:57,713 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 0 case distinctions, treesize of input 31 treesize of output 15 [2024-11-09 06:57:57,789 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 0 case distinctions, treesize of input 26 treesize of output 25 [2024-11-09 06:57:57,998 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:57:57,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 36 treesize of output 38 [2024-11-09 06:57:58,320 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:57:58,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 51 treesize of output 41 [2024-11-09 06:57:58,713 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:57:58,713 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 42 treesize of output 18 [2024-11-09 06:57:58,777 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 263 proven. 24 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-09 06:57:58,778 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:57:59,443 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 15 proven. 24 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 06:57:59,443 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:57:59,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1712738633] [2024-11-09 06:57:59,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1712738633] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:57:59,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [762148814] [2024-11-09 06:57:59,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:57:59,444 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:57:59,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:57:59,445 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:57:59,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2024-11-09 06:58:00,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:58:00,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 06:58:00,811 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:58:00,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 8 [2024-11-09 06:58:00,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2024-11-09 06:58:03,211 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:58:03,211 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 1 case distinctions, treesize of input 29 treesize of output 31 [2024-11-09 06:58:03,851 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:58:03,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 34 [2024-11-09 06:58:04,184 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:58:04,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 34 [2024-11-09 06:58:04,538 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:58:04,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 42 [2024-11-09 06:58:05,144 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:58:05,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 53 [2024-11-09 06:58:05,852 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:58:05,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 56 treesize of output 56 [2024-11-09 06:58:07,885 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:58:07,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 66 treesize of output 34 [2024-11-09 06:58:08,449 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 252 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-09 06:58:08,449 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:58:08,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [762148814] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:58:08,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:58:08,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 7] total 20 [2024-11-09 06:58:08,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739453634] [2024-11-09 06:58:08,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:58:08,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 06:58:08,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:58:08,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 06:58:08,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=308, Unknown=1, NotChecked=0, Total=380 [2024-11-09 06:58:08,452 INFO L87 Difference]: Start difference. First operand 1910 states and 2349 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-09 06:58:17,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:58:17,915 INFO L93 Difference]: Finished difference Result 3594 states and 4417 transitions. [2024-11-09 06:58:17,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:58:17,915 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 121 [2024-11-09 06:58:17,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:58:17,922 INFO L225 Difference]: With dead ends: 3594 [2024-11-09 06:58:17,922 INFO L226 Difference]: Without dead ends: 1910 [2024-11-09 06:58:17,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 341 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=80, Invalid=339, Unknown=1, NotChecked=0, Total=420 [2024-11-09 06:58:17,926 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 225 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:58:17,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 338 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2024-11-09 06:58:17,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1910 states. [2024-11-09 06:58:18,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1910 to 1906. [2024-11-09 06:58:18,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1906 states, 1524 states have (on average 1.1896325459317585) internal successors, (1813), 1537 states have internal predecessors, (1813), 262 states have call successors, (262), 119 states have call predecessors, (262), 119 states have return successors, (262), 249 states have call predecessors, (262), 262 states have call successors, (262) [2024-11-09 06:58:18,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1906 states to 1906 states and 2337 transitions. [2024-11-09 06:58:18,561 INFO L78 Accepts]: Start accepts. Automaton has 1906 states and 2337 transitions. Word has length 121 [2024-11-09 06:58:18,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:58:18,562 INFO L471 AbstractCegarLoop]: Abstraction has 1906 states and 2337 transitions. [2024-11-09 06:58:18,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-09 06:58:18,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1906 states and 2337 transitions. [2024-11-09 06:58:18,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-09 06:58:18,563 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:58:18,563 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:58:18,572 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (30)] Ended with exit code 0 [2024-11-09 06:58:18,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 (29)] Forceful destruction successful, exit code 0 [2024-11-09 06:58:18,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:58:18,964 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:58:18,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:58:18,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1267191418, now seen corresponding path program 1 times [2024-11-09 06:58:18,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:58:18,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1219124077] [2024-11-09 06:58:18,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:58:18,965 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 [2024-11-09 06:58:18,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:58:18,966 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:58:18,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:58:19,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:58:19,365 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 06:58:19,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:58:19,377 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 8 treesize of output 1 [2024-11-09 06:58:19,475 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 0 case distinctions, treesize of input 26 treesize of output 25 [2024-11-09 06:58:19,665 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:58:19,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 41 treesize of output 28 [2024-11-09 06:58:19,813 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:58:19,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 41 treesize of output 28 [2024-11-09 06:58:19,964 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:58:19,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 41 treesize of output 28 [2024-11-09 06:58:20,159 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:58:20,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 43 treesize of output 48 [2024-11-09 06:58:20,326 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:58:20,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 19 [2024-11-09 06:58:20,385 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 183 proven. 24 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-11-09 06:58:20,386 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:58:20,899 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 15 proven. 24 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 06:58:20,899 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:58:20,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1219124077] [2024-11-09 06:58:20,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1219124077] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:58:20,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [921656933] [2024-11-09 06:58:20,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:58:20,900 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:58:20,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:58:20,901 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:58:20,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2024-11-09 06:58:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:58:22,201 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 06:58:22,205 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:58:22,398 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 [2024-11-09 06:58:22,454 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 [2024-11-09 06:58:22,509 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 12 treesize of output 8 [2024-11-09 06:58:22,756 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 20 [2024-11-09 06:58:23,025 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:58:23,025 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 1 case distinctions, treesize of input 29 treesize of output 31 [2024-11-09 06:58:23,430 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:58:23,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 43 [2024-11-09 06:58:23,825 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:58:23,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 59 treesize of output 59 [2024-11-09 06:58:24,018 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:58:24,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 59 treesize of output 59 [2024-11-09 06:58:24,194 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:58:24,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 52 treesize of output 28 [2024-11-09 06:58:24,756 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 240 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-09 06:58:24,757 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:58:24,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [921656933] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:58:24,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:58:24,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 7] total 21 [2024-11-09 06:58:24,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057607573] [2024-11-09 06:58:24,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:58:24,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 06:58:24,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:58:24,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 06:58:24,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2024-11-09 06:58:24,759 INFO L87 Difference]: Start difference. First operand 1906 states and 2337 transitions. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 9 states have internal predecessors, (63), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-09 06:58:30,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:58:36,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:58:36,341 INFO L93 Difference]: Finished difference Result 3095 states and 3803 transitions. [2024-11-09 06:58:36,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 06:58:36,342 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 9 states have internal predecessors, (63), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 121 [2024-11-09 06:58:36,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:58:36,351 INFO L225 Difference]: With dead ends: 3095 [2024-11-09 06:58:36,352 INFO L226 Difference]: Without dead ends: 2615 [2024-11-09 06:58:36,353 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 340 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2024-11-09 06:58:36,358 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 354 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2024-11-09 06:58:36,358 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 464 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2024-11-09 06:58:36,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2615 states. [2024-11-09 06:58:37,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2615 to 2019. [2024-11-09 06:58:37,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2019 states, 1631 states have (on average 1.1986511342734518) internal successors, (1955), 1645 states have internal predecessors, (1955), 266 states have call successors, (266), 121 states have call predecessors, (266), 121 states have return successors, (266), 252 states have call predecessors, (266), 266 states have call successors, (266) [2024-11-09 06:58:37,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 2487 transitions. [2024-11-09 06:58:37,230 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 2487 transitions. Word has length 121 [2024-11-09 06:58:37,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:58:37,231 INFO L471 AbstractCegarLoop]: Abstraction has 2019 states and 2487 transitions. [2024-11-09 06:58:37,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 9 states have internal predecessors, (63), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-09 06:58:37,231 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 2487 transitions. [2024-11-09 06:58:37,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-09 06:58:37,233 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:58:37,233 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:58:37,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:58:37,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (32)] Forceful destruction successful, exit code 0 [2024-11-09 06:58:37,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 06:58:37,634 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:58:37,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:58:37,634 INFO L85 PathProgramCache]: Analyzing trace with hash -844489592, now seen corresponding path program 1 times [2024-11-09 06:58:37,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:58:37,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [533857348] [2024-11-09 06:58:37,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:58:37,635 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 [2024-11-09 06:58:37,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:58:37,636 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:58:37,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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)] Waiting until timeout for monitored process [2024-11-09 06:58:38,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:58:38,046 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 06:58:38,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:58:38,056 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 [2024-11-09 06:58:38,175 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 0 case distinctions, treesize of input 26 treesize of output 25 [2024-11-09 06:58:38,492 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:58:38,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 41 treesize of output 28 [2024-11-09 06:58:38,738 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:58:38,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 41 treesize of output 28 [2024-11-09 06:58:38,987 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:58:38,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 43 treesize of output 48 [2024-11-09 06:58:39,250 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:58:39,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 60 [2024-11-09 06:58:39,433 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:58:39,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 73 treesize of output 63 [2024-11-09 06:58:39,685 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:58:39,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 98 treesize of output 44 [2024-11-09 06:58:39,936 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 195 proven. 18 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-11-09 06:58:39,937 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:58:40,515 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-09 06:58:40,515 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:58:40,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [533857348] [2024-11-09 06:58:40,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [533857348] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 06:58:40,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:58:40,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 17 [2024-11-09 06:58:40,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879812907] [2024-11-09 06:58:40,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:58:40,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:58:40,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:58:40,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:58:40,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2024-11-09 06:58:40,518 INFO L87 Difference]: Start difference. First operand 2019 states and 2487 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 06:58:42,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:58:42,453 INFO L93 Difference]: Finished difference Result 2982 states and 3683 transitions. [2024-11-09 06:58:42,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 06:58:42,454 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 121 [2024-11-09 06:58:42,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:58:42,461 INFO L225 Difference]: With dead ends: 2982 [2024-11-09 06:58:42,461 INFO L226 Difference]: Without dead ends: 2391 [2024-11-09 06:58:42,462 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2024-11-09 06:58:42,462 INFO L432 NwaCegarLoop]: 167 mSDtfsCounter, 69 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:58:42,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 871 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 06:58:42,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2391 states. [2024-11-09 06:58:43,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2391 to 2035. [2024-11-09 06:58:43,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2035 states, 1647 states have (on average 1.1997571341833637) internal successors, (1976), 1661 states have internal predecessors, (1976), 266 states have call successors, (266), 121 states have call predecessors, (266), 121 states have return successors, (266), 252 states have call predecessors, (266), 266 states have call successors, (266) [2024-11-09 06:58:43,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 2508 transitions. [2024-11-09 06:58:43,023 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 2508 transitions. Word has length 121 [2024-11-09 06:58:43,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:58:43,023 INFO L471 AbstractCegarLoop]: Abstraction has 2035 states and 2508 transitions. [2024-11-09 06:58:43,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 06:58:43,024 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 2508 transitions. [2024-11-09 06:58:43,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-09 06:58:43,025 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:58:43,025 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:58:43,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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)] Ended with exit code 0 [2024-11-09 06:58:43,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:58:43,226 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:58:43,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:58:43,227 INFO L85 PathProgramCache]: Analyzing trace with hash 363585446, now seen corresponding path program 1 times [2024-11-09 06:58:43,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:58:43,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [998101591] [2024-11-09 06:58:43,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:58:43,228 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 [2024-11-09 06:58:43,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:58:43,231 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:58:43,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:58:43,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:58:43,704 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 06:58:43,707 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:58:43,712 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 [2024-11-09 06:58:43,803 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 0 case distinctions, treesize of input 26 treesize of output 25 [2024-11-09 06:58:43,991 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:58:43,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 41 treesize of output 28 [2024-11-09 06:58:44,150 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:58:44,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 41 treesize of output 28 [2024-11-09 06:58:44,335 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:58:44,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 43 treesize of output 48 [2024-11-09 06:58:44,524 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:58:44,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 59 [2024-11-09 06:58:44,658 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:58:44,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 66 treesize of output 62 [2024-11-09 06:58:44,831 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:58:44,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 91 treesize of output 43 [2024-11-09 06:58:45,021 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 195 proven. 18 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-11-09 06:58:45,021 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:58:45,861 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 21 proven. 18 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 06:58:45,861 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:58:45,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [998101591] [2024-11-09 06:58:45,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [998101591] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:58:45,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [229415764] [2024-11-09 06:58:45,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:58:45,862 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:58:45,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:58:45,863 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:58:45,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2024-11-09 06:58:47,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:58:47,145 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 06:58:47,149 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:58:47,410 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 [2024-11-09 06:58:47,798 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 22 treesize of output 21 [2024-11-09 06:58:48,105 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:58:48,105 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 1 case distinctions, treesize of input 33 treesize of output 24 [2024-11-09 06:58:48,309 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:58:48,309 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 1 case distinctions, treesize of input 33 treesize of output 24 [2024-11-09 06:58:48,571 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:58:48,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 40 [2024-11-09 06:58:48,858 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:58:48,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 51 [2024-11-09 06:58:49,080 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:58:49,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 54 treesize of output 54 [2024-11-09 06:58:49,274 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:58:49,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 79 treesize of output 43 [2024-11-09 06:58:49,303 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 195 proven. 18 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-11-09 06:58:49,303 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:58:49,753 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 21 proven. 18 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 06:58:49,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [229415764] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:58:49,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654918343] [2024-11-09 06:58:49,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:58:49,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:58:49,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:58:49,755 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:58:49,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-09 06:58:50,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:58:50,093 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 06:58:50,096 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:58:50,241 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 0 case distinctions, treesize of input 26 treesize of output 25 [2024-11-09 06:58:50,483 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:58:50,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 36 treesize of output 38 [2024-11-09 06:58:50,957 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:58:50,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 46 treesize of output 51 [2024-11-09 06:58:51,558 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:58:51,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 65 [2024-11-09 06:58:52,015 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:58:52,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 66 treesize of output 77 [2024-11-09 06:58:52,360 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:58:52,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 81 treesize of output 80 [2024-11-09 06:58:52,679 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:58:52,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 106 treesize of output 52 [2024-11-09 06:58:52,713 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 222 proven. 54 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-09 06:58:52,713 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:58:53,248 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 21 proven. 18 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 06:58:53,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654918343] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:58:53,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 06:58:53,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 13, 11, 16, 11] total 33 [2024-11-09 06:58:53,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502833807] [2024-11-09 06:58:53,250 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 06:58:53,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-09 06:58:53,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:58:53,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-09 06:58:53,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=893, Unknown=0, NotChecked=0, Total=1056 [2024-11-09 06:58:53,253 INFO L87 Difference]: Start difference. First operand 2035 states and 2508 transitions. Second operand has 33 states, 29 states have (on average 5.793103448275862) internal successors, (168), 32 states have internal predecessors, (168), 11 states have call successors, (40), 6 states have call predecessors, (40), 9 states have return successors, (40), 8 states have call predecessors, (40), 11 states have call successors, (40) [2024-11-09 06:59:11,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:59:11,520 INFO L93 Difference]: Finished difference Result 5155 states and 6236 transitions. [2024-11-09 06:59:11,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-09 06:59:11,521 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 29 states have (on average 5.793103448275862) internal successors, (168), 32 states have internal predecessors, (168), 11 states have call successors, (40), 6 states have call predecessors, (40), 9 states have return successors, (40), 8 states have call predecessors, (40), 11 states have call successors, (40) Word has length 121 [2024-11-09 06:59:11,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:59:11,534 INFO L225 Difference]: With dead ends: 5155 [2024-11-09 06:59:11,534 INFO L226 Difference]: Without dead ends: 3998 [2024-11-09 06:59:11,538 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 760 GetRequests, 690 SyntacticMatches, 4 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1039 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=891, Invalid=3665, Unknown=0, NotChecked=0, Total=4556 [2024-11-09 06:59:11,539 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 575 mSDsluCounter, 1566 mSDsCounter, 0 mSdLazyCounter, 2910 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 3101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 2910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2024-11-09 06:59:11,539 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 1694 Invalid, 3101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 2910 Invalid, 0 Unknown, 0 Unchecked, 12.9s Time] [2024-11-09 06:59:11,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3998 states. [2024-11-09 06:59:12,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3998 to 1504. [2024-11-09 06:59:12,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1504 states, 1255 states have (on average 1.2151394422310757) internal successors, (1525), 1261 states have internal predecessors, (1525), 166 states have call successors, (166), 82 states have call predecessors, (166), 82 states have return successors, (166), 160 states have call predecessors, (166), 166 states have call successors, (166) [2024-11-09 06:59:12,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 1857 transitions. [2024-11-09 06:59:12,258 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 1857 transitions. Word has length 121 [2024-11-09 06:59:12,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:59:12,259 INFO L471 AbstractCegarLoop]: Abstraction has 1504 states and 1857 transitions. [2024-11-09 06:59:12,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 29 states have (on average 5.793103448275862) internal successors, (168), 32 states have internal predecessors, (168), 11 states have call successors, (40), 6 states have call predecessors, (40), 9 states have return successors, (40), 8 states have call predecessors, (40), 11 states have call successors, (40) [2024-11-09 06:59:12,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 1857 transitions. [2024-11-09 06:59:12,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-09 06:59:12,261 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:59:12,261 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:59:12,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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)] Ended with exit code 0 [2024-11-09 06:59:12,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (35)] Forceful destruction successful, exit code 0 [2024-11-09 06:59:12,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-11-09 06:59:12,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:59:12,862 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:59:12,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:59:12,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1430423520, now seen corresponding path program 1 times [2024-11-09 06:59:12,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:59:12,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [773276725] [2024-11-09 06:59:12,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:59:12,863 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 [2024-11-09 06:59:12,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:59:12,868 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:59:12,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:59:13,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:59:13,191 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 06:59:13,193 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:59:13,403 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:59:13,403 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 175 treesize of output 67 [2024-11-09 06:59:13,533 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-09 06:59:13,534 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:59:13,534 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:59:13,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [773276725] [2024-11-09 06:59:13,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [773276725] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:59:13,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:59:13,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-09 06:59:13,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206873384] [2024-11-09 06:59:13,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:59:13,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 06:59:13,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:59:13,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 06:59:13,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 06:59:13,536 INFO L87 Difference]: Start difference. First operand 1504 states and 1857 transitions. Second operand has 9 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-09 06:59:15,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:59:15,669 INFO L93 Difference]: Finished difference Result 2548 states and 3154 transitions. [2024-11-09 06:59:15,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 06:59:15,670 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 121 [2024-11-09 06:59:15,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:59:15,673 INFO L225 Difference]: With dead ends: 2548 [2024-11-09 06:59:15,674 INFO L226 Difference]: Without dead ends: 970 [2024-11-09 06:59:15,676 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2024-11-09 06:59:15,677 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 115 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:59:15,677 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 574 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 06:59:15,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2024-11-09 06:59:15,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 761. [2024-11-09 06:59:15,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 675 states have (on average 1.2385185185185186) internal successors, (836), 675 states have internal predecessors, (836), 56 states have call successors, (56), 29 states have call predecessors, (56), 29 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-09 06:59:15,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 948 transitions. [2024-11-09 06:59:15,952 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 948 transitions. Word has length 121 [2024-11-09 06:59:15,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:59:15,952 INFO L471 AbstractCegarLoop]: Abstraction has 761 states and 948 transitions. [2024-11-09 06:59:15,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-09 06:59:15,952 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 948 transitions. [2024-11-09 06:59:15,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-09 06:59:15,953 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:59:15,953 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:59:15,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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)] Forceful destruction successful, exit code 0 [2024-11-09 06:59:16,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:59:16,154 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:59:16,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:59:16,155 INFO L85 PathProgramCache]: Analyzing trace with hash -144045595, now seen corresponding path program 1 times [2024-11-09 06:59:16,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:59:16,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [627276846] [2024-11-09 06:59:16,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:59:16,155 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 [2024-11-09 06:59:16,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:59:16,156 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:59:16,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 (38)] Waiting until timeout for monitored process [2024-11-09 06:59:16,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:59:16,644 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 06:59:16,651 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:59:16,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:59:16,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:59:16,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:59:16,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:59:16,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:59:16,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:59:16,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:59:16,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:59:16,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:59:16,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:59:16,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:59:16,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:59:16,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:59:16,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:59:16,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:59:16,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 81 [2024-11-09 06:59:17,165 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:59:17,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 91 treesize of output 37 [2024-11-09 06:59:17,255 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 [2024-11-09 06:59:17,359 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 14 treesize of output 10 [2024-11-09 06:59:17,590 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 0 case distinctions, treesize of input 30 treesize of output 14 [2024-11-09 06:59:17,766 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 0 case distinctions, treesize of input 25 treesize of output 24 [2024-11-09 06:59:18,105 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:59:18,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 40 treesize of output 27 [2024-11-09 06:59:18,375 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:59:18,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 40 treesize of output 27 [2024-11-09 06:59:20,223 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:59:20,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 56 [2024-11-09 06:59:20,606 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:59:20,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 71 [2024-11-09 06:59:24,636 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:59:24,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 85 treesize of output 37 [2024-11-09 06:59:25,446 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 256 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-11-09 06:59:25,447 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:59:25,447 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:59:25,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [627276846] [2024-11-09 06:59:25,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [627276846] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:59:25,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:59:25,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-09 06:59:25,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662286668] [2024-11-09 06:59:25,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:59:25,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 06:59:25,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:59:25,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 06:59:25,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-09 06:59:25,449 INFO L87 Difference]: Start difference. First operand 761 states and 948 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-09 06:59:34,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:59:36,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:59:38,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:59:44,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:59:47,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:59:47,720 INFO L93 Difference]: Finished difference Result 1867 states and 2340 transitions. [2024-11-09 06:59:47,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 06:59:47,721 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 122 [2024-11-09 06:59:47,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:59:47,725 INFO L225 Difference]: With dead ends: 1867 [2024-11-09 06:59:47,725 INFO L226 Difference]: Without dead ends: 1215 [2024-11-09 06:59:47,727 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2024-11-09 06:59:47,727 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 210 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:59:47,728 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 453 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 19.6s Time] [2024-11-09 06:59:47,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2024-11-09 06:59:48,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 843. [2024-11-09 06:59:48,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 757 states have (on average 1.236459709379128) internal successors, (936), 757 states have internal predecessors, (936), 56 states have call successors, (56), 29 states have call predecessors, (56), 29 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-09 06:59:48,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1048 transitions. [2024-11-09 06:59:48,069 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1048 transitions. Word has length 122 [2024-11-09 06:59:48,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:59:48,070 INFO L471 AbstractCegarLoop]: Abstraction has 843 states and 1048 transitions. [2024-11-09 06:59:48,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-09 06:59:48,070 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1048 transitions. [2024-11-09 06:59:48,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-09 06:59:48,072 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:59:48,072 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:59:48,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 (38)] Ended with exit code 0 [2024-11-09 06:59:48,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:59:48,273 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:59:48,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:59:48,274 INFO L85 PathProgramCache]: Analyzing trace with hash 477419457, now seen corresponding path program 1 times [2024-11-09 06:59:48,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:59:48,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1404071129] [2024-11-09 06:59:48,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:59:48,275 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 [2024-11-09 06:59:48,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:59:48,279 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:59:48,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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)] Waiting until timeout for monitored process [2024-11-09 06:59:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:59:48,844 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 06:59:48,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:59:48,858 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 14 treesize of output 10 [2024-11-09 06:59:49,176 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 0 case distinctions, treesize of input 36 treesize of output 29 [2024-11-09 06:59:49,560 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:59:49,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 40 treesize of output 27 [2024-11-09 06:59:49,887 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:59:49,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 35 treesize of output 37 [2024-11-09 06:59:50,351 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:59:50,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 45 treesize of output 50 [2024-11-09 06:59:51,038 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:59:51,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 64 [2024-11-09 06:59:51,405 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:59:51,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 63 treesize of output 27 [2024-11-09 06:59:51,472 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 283 proven. 24 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-09 06:59:51,472 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:59:52,116 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 15 proven. 24 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 06:59:52,116 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:59:52,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1404071129] [2024-11-09 06:59:52,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1404071129] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:59:52,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [911163171] [2024-11-09 06:59:52,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:59:52,117 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:59:52,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:59:52,118 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:59:52,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (40)] Waiting until timeout for monitored process [2024-11-09 06:59:53,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:59:53,761 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 06:59:53,765 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:59:53,993 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 [2024-11-09 06:59:54,401 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 22 treesize of output 21 [2024-11-09 06:59:54,778 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:59:54,778 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 1 case distinctions, treesize of input 30 treesize of output 32 [2024-11-09 06:59:55,199 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:59:55,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 35 [2024-11-09 06:59:55,498 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:59:55,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 35 [2024-11-09 06:59:55,900 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:59:55,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 51 [2024-11-09 06:59:56,273 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:59:56,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 23 [2024-11-09 06:59:56,351 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 231 proven. 24 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-09 06:59:56,351 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:59:56,710 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 15 proven. 24 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 06:59:56,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [911163171] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:59:56,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954233711] [2024-11-09 06:59:56,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:59:56,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:59:56,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:59:56,712 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:59:56,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-09 06:59:57,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:59:57,050 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 06:59:57,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:59:57,364 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 0 case distinctions, treesize of input 30 treesize of output 14 [2024-11-09 06:59:57,439 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 0 case distinctions, treesize of input 25 treesize of output 24 [2024-11-09 06:59:57,710 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:59:57,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 40 treesize of output 27 [2024-11-09 06:59:57,873 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:59:57,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 35 treesize of output 37 [2024-11-09 06:59:58,304 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:59:58,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 52 treesize of output 51 [2024-11-09 06:59:58,604 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 263 proven. 24 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-09 06:59:58,605 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:59:58,975 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 15 proven. 24 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 06:59:58,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954233711] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:59:58,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 06:59:58,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 10, 7, 10, 7] total 31 [2024-11-09 06:59:58,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886655344] [2024-11-09 06:59:58,976 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 06:59:58,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-09 06:59:58,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:59:58,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-09 06:59:58,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=763, Unknown=0, NotChecked=0, Total=930 [2024-11-09 06:59:58,979 INFO L87 Difference]: Start difference. First operand 843 states and 1048 transitions. Second operand has 31 states, 27 states have (on average 6.037037037037037) internal successors, (163), 29 states have internal predecessors, (163), 15 states have call successors, (47), 11 states have call predecessors, (47), 15 states have return successors, (47), 13 states have call predecessors, (47), 15 states have call successors, (47) [2024-11-09 07:00:09,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:00:09,710 INFO L93 Difference]: Finished difference Result 1284 states and 1602 transitions. [2024-11-09 07:00:09,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-09 07:00:09,712 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 27 states have (on average 6.037037037037037) internal successors, (163), 29 states have internal predecessors, (163), 15 states have call successors, (47), 11 states have call predecessors, (47), 15 states have return successors, (47), 13 states have call predecessors, (47), 15 states have call successors, (47) Word has length 122 [2024-11-09 07:00:09,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:00:09,715 INFO L225 Difference]: With dead ends: 1284 [2024-11-09 07:00:09,715 INFO L226 Difference]: Without dead ends: 1037 [2024-11-09 07:00:09,716 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 757 GetRequests, 700 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 809 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=743, Invalid=2449, Unknown=0, NotChecked=0, Total=3192 [2024-11-09 07:00:09,717 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 791 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 1053 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 1053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2024-11-09 07:00:09,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 560 Invalid, 1248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 1053 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2024-11-09 07:00:09,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2024-11-09 07:00:09,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 825. [2024-11-09 07:00:09,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 739 states have (on average 1.2313937753721245) internal successors, (910), 739 states have internal predecessors, (910), 56 states have call successors, (56), 29 states have call predecessors, (56), 29 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-09 07:00:09,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 1022 transitions. [2024-11-09 07:00:09,930 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 1022 transitions. Word has length 122 [2024-11-09 07:00:09,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:00:09,931 INFO L471 AbstractCegarLoop]: Abstraction has 825 states and 1022 transitions. [2024-11-09 07:00:09,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 27 states have (on average 6.037037037037037) internal successors, (163), 29 states have internal predecessors, (163), 15 states have call successors, (47), 11 states have call predecessors, (47), 15 states have return successors, (47), 13 states have call predecessors, (47), 15 states have call successors, (47) [2024-11-09 07:00:09,931 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 1022 transitions. [2024-11-09 07:00:09,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-09 07:00:09,933 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:00:09,933 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:00:09,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (40)] Forceful destruction successful, exit code 0 [2024-11-09 07:00:10,161 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-11-09 07:00:10,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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)] Ended with exit code 0 [2024-11-09 07:00:10,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:00:10,534 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:00:10,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:00:10,535 INFO L85 PathProgramCache]: Analyzing trace with hash 696274175, now seen corresponding path program 1 times [2024-11-09 07:00:10,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:00:10,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480008968] [2024-11-09 07:00:10,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:00:10,535 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 [2024-11-09 07:00:10,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:00:10,537 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:00:10,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 (42)] Waiting until timeout for monitored process [2024-11-09 07:00:10,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:00:11,000 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 07:00:11,005 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:00:11,010 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 [2024-11-09 07:00:11,108 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 0 case distinctions, treesize of input 26 treesize of output 25 [2024-11-09 07:00:11,319 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:00:11,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 41 treesize of output 28 [2024-11-09 07:00:11,483 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:00:11,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 41 treesize of output 28 [2024-11-09 07:00:11,695 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:00:11,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 43 treesize of output 48 [2024-11-09 07:00:11,901 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:00:11,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 60 [2024-11-09 07:00:12,049 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:00:12,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 73 treesize of output 63 [2024-11-09 07:00:12,119 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:00:12,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 75 treesize of output 74 [2024-11-09 07:00:12,420 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:00:12,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 94 treesize of output 46 [2024-11-09 07:00:12,693 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 195 proven. 18 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-11-09 07:00:12,694 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:00:13,659 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 21 proven. 18 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 07:00:13,659 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:00:13,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1480008968] [2024-11-09 07:00:13,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1480008968] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:00:13,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [952523185] [2024-11-09 07:00:13,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:00:13,660 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 07:00:13,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 07:00:13,663 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 07:00:13,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (43)] Waiting until timeout for monitored process [2024-11-09 07:00:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:00:15,293 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 07:00:15,297 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:00:15,578 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 12 treesize of output 8 [2024-11-09 07:00:16,312 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 30 treesize of output 25 [2024-11-09 07:00:16,790 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:00:16,790 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 1 case distinctions, treesize of input 29 treesize of output 31 [2024-11-09 07:00:17,350 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:00:17,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 42 [2024-11-09 07:00:18,104 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:00:18,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 54 [2024-11-09 07:00:18,668 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:00:18,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 60 treesize of output 67 [2024-11-09 07:00:19,043 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:00:19,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 71 treesize of output 70 [2024-11-09 07:00:19,173 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:00:19,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 73 treesize of output 79 [2024-11-09 07:00:19,771 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:00:19,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 94 treesize of output 54 [2024-11-09 07:00:19,798 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 273 proven. 18 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-09 07:00:19,798 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:00:20,241 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 21 proven. 18 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 07:00:20,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [952523185] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:00:20,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796628599] [2024-11-09 07:00:20,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:00:20,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:00:20,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:00:20,245 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:00:20,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-09 07:00:20,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:00:20,669 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-09 07:00:20,673 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:00:20,830 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 0 case distinctions, treesize of input 31 treesize of output 15 [2024-11-09 07:00:20,909 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 0 case distinctions, treesize of input 26 treesize of output 25 [2024-11-09 07:00:21,282 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:00:21,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 41 treesize of output 28 [2024-11-09 07:00:21,495 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:00:21,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 43 treesize of output 48 [2024-11-09 07:00:21,845 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:00:21,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 60 [2024-11-09 07:00:22,139 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:00:22,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 73 treesize of output 63 [2024-11-09 07:00:22,205 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:00:22,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 75 treesize of output 83 [2024-11-09 07:00:22,781 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:00:22,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 99 treesize of output 45 [2024-11-09 07:00:22,815 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 206 proven. 54 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-09 07:00:22,815 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:00:23,357 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 21 proven. 18 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 07:00:23,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796628599] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:00:23,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 07:00:23,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 17, 11, 15, 11] total 38 [2024-11-09 07:00:23,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033493398] [2024-11-09 07:00:23,358 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 07:00:23,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-09 07:00:23,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:00:23,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-09 07:00:23,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=1172, Unknown=0, NotChecked=0, Total=1406 [2024-11-09 07:00:23,360 INFO L87 Difference]: Start difference. First operand 825 states and 1022 transitions. Second operand has 38 states, 34 states have (on average 5.323529411764706) internal successors, (181), 37 states have internal predecessors, (181), 13 states have call successors, (42), 9 states have call predecessors, (42), 12 states have return successors, (42), 10 states have call predecessors, (42), 13 states have call successors, (42) [2024-11-09 07:00:50,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:00:50,458 INFO L93 Difference]: Finished difference Result 2017 states and 2479 transitions. [2024-11-09 07:00:50,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-09 07:00:50,459 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 34 states have (on average 5.323529411764706) internal successors, (181), 37 states have internal predecessors, (181), 13 states have call successors, (42), 9 states have call predecessors, (42), 12 states have return successors, (42), 10 states have call predecessors, (42), 13 states have call successors, (42) Word has length 122 [2024-11-09 07:00:50,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:00:50,463 INFO L225 Difference]: With dead ends: 2017 [2024-11-09 07:00:50,464 INFO L226 Difference]: Without dead ends: 1780 [2024-11-09 07:00:50,467 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 781 GetRequests, 690 SyntacticMatches, 3 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2198 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=1479, Invalid=6531, Unknown=0, NotChecked=0, Total=8010 [2024-11-09 07:00:50,468 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 516 mSDsluCounter, 2042 mSDsCounter, 0 mSdLazyCounter, 4345 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 2204 SdHoareTripleChecker+Invalid, 4470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 4345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:00:50,468 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 2204 Invalid, 4470 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [125 Valid, 4345 Invalid, 0 Unknown, 0 Unchecked, 20.2s Time] [2024-11-09 07:00:50,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1780 states. [2024-11-09 07:00:50,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1780 to 813. [2024-11-09 07:00:50,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 727 states have (on average 1.2283356258596974) internal successors, (893), 727 states have internal predecessors, (893), 56 states have call successors, (56), 29 states have call predecessors, (56), 29 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-09 07:00:50,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1005 transitions. [2024-11-09 07:00:50,720 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1005 transitions. Word has length 122 [2024-11-09 07:00:50,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:00:50,720 INFO L471 AbstractCegarLoop]: Abstraction has 813 states and 1005 transitions. [2024-11-09 07:00:50,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 34 states have (on average 5.323529411764706) internal successors, (181), 37 states have internal predecessors, (181), 13 states have call successors, (42), 9 states have call predecessors, (42), 12 states have return successors, (42), 10 states have call predecessors, (42), 13 states have call successors, (42) [2024-11-09 07:00:50,721 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1005 transitions. [2024-11-09 07:00:50,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 07:00:50,722 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:00:50,722 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:00:50,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2024-11-09 07:00:50,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 (42)] Forceful destruction successful, exit code 0 [2024-11-09 07:00:51,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (43)] Ended with exit code 0 [2024-11-09 07:00:51,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 07:00:51,324 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:00:51,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:00:51,324 INFO L85 PathProgramCache]: Analyzing trace with hash 367885541, now seen corresponding path program 1 times [2024-11-09 07:00:51,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:00:51,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [376863170] [2024-11-09 07:00:51,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:00:51,326 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 [2024-11-09 07:00:51,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:00:51,329 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:00:51,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 (45)] Waiting until timeout for monitored process [2024-11-09 07:00:51,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:00:51,890 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 07:00:51,894 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:00:51,905 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 14 treesize of output 10 [2024-11-09 07:00:52,079 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 0 case distinctions, treesize of input 30 treesize of output 14 [2024-11-09 07:00:52,178 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 0 case distinctions, treesize of input 25 treesize of output 24 [2024-11-09 07:00:52,416 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:00:52,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 35 treesize of output 37 [2024-11-09 07:00:52,759 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:00:52,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 50 treesize of output 40 [2024-11-09 07:00:53,003 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:00:53,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 50 treesize of output 40 [2024-11-09 07:00:53,562 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:00:53,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 54 treesize of output 53 [2024-11-09 07:00:53,731 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:00:53,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 64 treesize of output 75 [2024-11-09 07:00:54,150 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:00:54,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 71 treesize of output 31 [2024-11-09 07:00:54,220 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-09 07:00:54,220 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:00:54,220 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:00:54,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [376863170] [2024-11-09 07:00:54,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [376863170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:00:54,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:00:54,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 07:00:54,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147637607] [2024-11-09 07:00:54,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:00:54,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 07:00:54,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:00:54,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 07:00:54,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-09 07:00:54,223 INFO L87 Difference]: Start difference. First operand 813 states and 1005 transitions. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-09 07:00:58,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:00:58,127 INFO L93 Difference]: Finished difference Result 1791 states and 2215 transitions. [2024-11-09 07:00:58,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 07:00:58,128 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 123 [2024-11-09 07:00:58,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:00:58,131 INFO L225 Difference]: With dead ends: 1791 [2024-11-09 07:00:58,131 INFO L226 Difference]: Without dead ends: 1148 [2024-11-09 07:00:58,132 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2024-11-09 07:00:58,133 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 320 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:00:58,133 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 386 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-09 07:00:58,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2024-11-09 07:00:58,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 867. [2024-11-09 07:00:58,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 781 states have (on average 1.234314980793854) internal successors, (964), 781 states have internal predecessors, (964), 56 states have call successors, (56), 29 states have call predecessors, (56), 29 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-09 07:00:58,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1076 transitions. [2024-11-09 07:00:58,571 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1076 transitions. Word has length 123 [2024-11-09 07:00:58,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:00:58,572 INFO L471 AbstractCegarLoop]: Abstraction has 867 states and 1076 transitions. [2024-11-09 07:00:58,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-09 07:00:58,572 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1076 transitions. [2024-11-09 07:00:58,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 07:00:58,574 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:00:58,574 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:00:58,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 (45)] Ended with exit code 0 [2024-11-09 07:00:58,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:00:58,779 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:00:58,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:00:58,780 INFO L85 PathProgramCache]: Analyzing trace with hash -653182813, now seen corresponding path program 1 times [2024-11-09 07:00:58,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:00:58,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1985510020] [2024-11-09 07:00:58,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:00:58,781 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 [2024-11-09 07:00:58,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:00:58,785 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:00:58,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:00:59,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:00:59,308 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 07:00:59,314 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:00:59,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:00:59,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:00:59,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:00:59,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:00:59,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:00:59,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:00:59,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:00:59,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:00:59,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:00:59,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:00:59,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:00:59,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:00:59,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:00:59,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:00:59,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:00:59,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 81 [2024-11-09 07:00:59,765 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:00:59,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 101 treesize of output 125 [2024-11-09 07:01:02,926 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:01:02,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 115 treesize of output 141 [2024-11-09 07:01:05,112 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:01:05,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 125 treesize of output 145 [2024-11-09 07:01:06,545 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:01:06,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 125 treesize of output 145 [2024-11-09 07:01:07,929 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:01:07,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 125 treesize of output 145 [2024-11-09 07:01:09,303 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:01:09,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 130 treesize of output 135 [2024-11-09 07:01:10,523 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:01:10,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 120 treesize of output 122 [2024-11-09 07:01:12,230 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:01:12,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 103 treesize of output 126 [2024-11-09 07:01:12,577 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:01:12,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 124 treesize of output 144 [2024-11-09 07:01:13,405 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:01:13,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 121 treesize of output 51 [2024-11-09 07:01:13,527 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 12 proven. 320 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 07:01:13,528 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:01:14,172 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-09 07:01:14,172 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:01:14,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1985510020] [2024-11-09 07:01:14,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1985510020] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 07:01:14,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:01:14,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 15 [2024-11-09 07:01:14,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643905264] [2024-11-09 07:01:14,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:01:14,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:01:14,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:01:14,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:01:14,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=152, Unknown=1, NotChecked=0, Total=210 [2024-11-09 07:01:14,174 INFO L87 Difference]: Start difference. First operand 867 states and 1076 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 07:01:15,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:01:15,439 INFO L93 Difference]: Finished difference Result 1586 states and 1986 transitions. [2024-11-09 07:01:15,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:01:15,440 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 123 [2024-11-09 07:01:15,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:01:15,443 INFO L225 Difference]: With dead ends: 1586 [2024-11-09 07:01:15,443 INFO L226 Difference]: Without dead ends: 880 [2024-11-09 07:01:15,445 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=61, Invalid=178, Unknown=1, NotChecked=0, Total=240 [2024-11-09 07:01:15,445 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 66 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 07:01:15,446 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 212 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 07:01:15,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2024-11-09 07:01:15,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 871. [2024-11-09 07:01:15,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 871 states, 785 states have (on average 1.2292993630573248) internal successors, (965), 785 states have internal predecessors, (965), 56 states have call successors, (56), 29 states have call predecessors, (56), 29 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-09 07:01:15,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 1077 transitions. [2024-11-09 07:01:15,733 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 1077 transitions. Word has length 123 [2024-11-09 07:01:15,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:01:15,733 INFO L471 AbstractCegarLoop]: Abstraction has 871 states and 1077 transitions. [2024-11-09 07:01:15,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 07:01:15,734 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 1077 transitions. [2024-11-09 07:01:15,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 07:01:15,734 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:01:15,735 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:01:15,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:01:15,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:01:15,935 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:01:15,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:01:15,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1544449991, now seen corresponding path program 1 times [2024-11-09 07:01:15,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:01:15,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1700499811] [2024-11-09 07:01:15,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:01:15,937 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 [2024-11-09 07:01:15,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:01:15,938 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:01:15,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 (47)] Waiting until timeout for monitored process [2024-11-09 07:01:16,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:01:16,487 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 07:01:16,491 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:01:16,501 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 [2024-11-09 07:01:16,643 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 0 case distinctions, treesize of input 26 treesize of output 25 [2024-11-09 07:01:16,946 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:01:16,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 41 treesize of output 28 [2024-11-09 07:01:17,131 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:01:17,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 41 treesize of output 28 [2024-11-09 07:01:17,315 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:01:17,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 41 treesize of output 28 [2024-11-09 07:01:17,597 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:01:17,598 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 49 treesize of output 25 [2024-11-09 07:01:17,637 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 183 proven. 24 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-11-09 07:01:17,637 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:01:18,197 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 15 proven. 24 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 07:01:18,197 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:01:18,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1700499811] [2024-11-09 07:01:18,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1700499811] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:01:18,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [268081204] [2024-11-09 07:01:18,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:01:18,198 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 07:01:18,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 07:01:18,200 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 07:01:18,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (48)] Waiting until timeout for monitored process [2024-11-09 07:01:19,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:01:19,813 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-09 07:01:19,820 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:01:19,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:01:19,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:01:19,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:01:19,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:01:19,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:01:19,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:01:19,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:01:19,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:01:19,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:01:19,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:01:19,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:01:19,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:01:19,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:01:19,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:01:19,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:01:19,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:01:19,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:01:19,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:01:19,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:01:19,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:01:19,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:01:19,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 57 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 65 [2024-11-09 07:01:20,417 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:01:20,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 45 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 81 treesize of output 105 [2024-11-09 07:01:23,396 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:01:23,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 96 treesize of output 104 [2024-11-09 07:01:26,879 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:01:26,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 88 treesize of output 93 [2024-11-09 07:01:29,819 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:01:29,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 80 treesize of output 89 [2024-11-09 07:01:30,633 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:01:30,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 77 treesize of output 90 [2024-11-09 07:01:33,607 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:01:33,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 77 treesize of output 90 [2024-11-09 07:01:36,529 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:01:36,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 77 treesize of output 90 [2024-11-09 07:01:40,625 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:01:40,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 90 treesize of output 102 [2024-11-09 07:01:40,797 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:01:40,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 96 treesize of output 108 [2024-11-09 07:01:41,679 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:01:41,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 108 treesize of output 56 [2024-11-09 07:01:41,824 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 316 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-09 07:01:41,824 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:01:42,848 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-09 07:01:42,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [268081204] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 07:01:42,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:01:42,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7, 14] total 29 [2024-11-09 07:01:42,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030191028] [2024-11-09 07:01:42,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:01:42,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 07:01:42,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:01:42,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 07:01:42,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=684, Unknown=6, NotChecked=0, Total=812 [2024-11-09 07:01:42,850 INFO L87 Difference]: Start difference. First operand 871 states and 1077 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 07:01:44,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:01:44,815 INFO L93 Difference]: Finished difference Result 1971 states and 2433 transitions. [2024-11-09 07:01:44,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 07:01:44,816 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 123 [2024-11-09 07:01:44,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:01:44,819 INFO L225 Difference]: With dead ends: 1971 [2024-11-09 07:01:44,819 INFO L226 Difference]: Without dead ends: 1269 [2024-11-09 07:01:44,821 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 460 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=139, Invalid=785, Unknown=6, NotChecked=0, Total=930 [2024-11-09 07:01:44,821 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 204 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:01:44,821 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 485 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 07:01:44,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2024-11-09 07:01:45,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 873. [2024-11-09 07:01:45,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 787 states have (on average 1.218551461245235) internal successors, (959), 787 states have internal predecessors, (959), 56 states have call successors, (56), 29 states have call predecessors, (56), 29 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-09 07:01:45,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1071 transitions. [2024-11-09 07:01:45,176 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1071 transitions. Word has length 123 [2024-11-09 07:01:45,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:01:45,177 INFO L471 AbstractCegarLoop]: Abstraction has 873 states and 1071 transitions. [2024-11-09 07:01:45,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 07:01:45,177 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1071 transitions. [2024-11-09 07:01:45,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 07:01:45,179 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:01:45,179 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:01:45,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 (47)] Ended with exit code 0 [2024-11-09 07:01:45,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (48)] Ended with exit code 0 [2024-11-09 07:01:45,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 07:01:45,581 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:01:45,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:01:45,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1739400055, now seen corresponding path program 1 times [2024-11-09 07:01:45,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:01:45,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1102832973] [2024-11-09 07:01:45,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:01:45,583 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 [2024-11-09 07:01:45,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:01:45,586 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:01:45,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:01:46,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:01:46,098 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 07:01:46,102 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:01:46,107 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 14 treesize of output 10 [2024-11-09 07:01:46,396 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 0 case distinctions, treesize of input 41 treesize of output 19 [2024-11-09 07:01:46,607 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 0 case distinctions, treesize of input 41 treesize of output 19 [2024-11-09 07:01:46,869 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 0 case distinctions, treesize of input 36 treesize of output 29 [2024-11-09 07:01:47,227 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:01:47,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 51 treesize of output 32 [2024-11-09 07:01:47,658 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:01:47,659 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 59 treesize of output 29 [2024-11-09 07:01:47,706 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 267 proven. 24 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-09 07:01:47,706 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:01:48,308 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 15 proven. 24 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 07:01:48,308 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:01:48,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1102832973] [2024-11-09 07:01:48,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1102832973] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:01:48,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [911265856] [2024-11-09 07:01:48,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:01:48,309 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 07:01:48,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 07:01:48,313 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 07:01:48,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (50)] Waiting until timeout for monitored process [2024-11-09 07:01:49,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:01:50,024 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-09 07:01:50,030 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:01:50,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:01:50,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:01:50,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:01:50,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:01:50,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:01:50,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:01:50,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 42 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 33 [2024-11-09 07:01:50,285 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:01:50,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 53 [2024-11-09 07:01:52,705 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:01:52,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 56 treesize of output 56 [2024-11-09 07:01:53,362 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:01:53,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 53 treesize of output 64 [2024-11-09 07:01:54,135 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:01:54,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 64 treesize of output 60 [2024-11-09 07:01:54,895 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:01:54,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 53 treesize of output 64 [2024-11-09 07:01:55,529 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:01:55,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 61 treesize of output 68 [2024-11-09 07:01:56,184 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:01:56,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 61 treesize of output 68 [2024-11-09 07:01:57,839 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:01:57,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 74 treesize of output 80 [2024-11-09 07:01:57,967 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:01:57,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 80 treesize of output 93 [2024-11-09 07:01:58,858 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:01:58,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 98 treesize of output 54 [2024-11-09 07:01:58,867 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 48 proven. 272 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-09 07:01:58,867 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:01:59,884 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-09 07:01:59,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [911265856] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 07:01:59,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:01:59,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 7, 13] total 30 [2024-11-09 07:01:59,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422111282] [2024-11-09 07:01:59,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:01:59,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 07:01:59,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:01:59,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 07:01:59,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=750, Unknown=1, NotChecked=0, Total=870 [2024-11-09 07:01:59,887 INFO L87 Difference]: Start difference. First operand 873 states and 1071 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 07:02:01,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:02:01,709 INFO L93 Difference]: Finished difference Result 1868 states and 2292 transitions. [2024-11-09 07:02:01,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 07:02:01,710 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 123 [2024-11-09 07:02:01,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:02:01,713 INFO L225 Difference]: With dead ends: 1868 [2024-11-09 07:02:01,713 INFO L226 Difference]: Without dead ends: 1156 [2024-11-09 07:02:01,714 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 458 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=134, Invalid=857, Unknown=1, NotChecked=0, Total=992 [2024-11-09 07:02:01,714 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 133 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:02:01,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 544 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 07:02:01,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2024-11-09 07:02:02,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 853. [2024-11-09 07:02:02,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 767 states have (on average 1.2073011734028682) internal successors, (926), 767 states have internal predecessors, (926), 56 states have call successors, (56), 29 states have call predecessors, (56), 29 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-09 07:02:02,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1038 transitions. [2024-11-09 07:02:02,048 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1038 transitions. Word has length 123 [2024-11-09 07:02:02,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:02:02,048 INFO L471 AbstractCegarLoop]: Abstraction has 853 states and 1038 transitions. [2024-11-09 07:02:02,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 07:02:02,049 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1038 transitions. [2024-11-09 07:02:02,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 07:02:02,049 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:02:02,050 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:02:02,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:02:02,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (50)] Forceful destruction successful, exit code 0 [2024-11-09 07:02:02,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 07:02:02,450 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:02:02,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:02:02,451 INFO L85 PathProgramCache]: Analyzing trace with hash 77267169, now seen corresponding path program 1 times [2024-11-09 07:02:02,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:02:02,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [851675519] [2024-11-09 07:02:02,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:02:02,452 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 [2024-11-09 07:02:02,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:02:02,455 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:02:02,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 (51)] Waiting until timeout for monitored process [2024-11-09 07:02:02,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:02:02,940 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-09 07:02:02,946 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:02:02,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:02:02,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:02:02,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:02:02,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:02:02,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:02:02,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:02:02,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 41 [2024-11-09 07:02:03,167 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:02:03,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 61 treesize of output 73 [2024-11-09 07:02:05,711 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:02:05,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 75 treesize of output 89 [2024-11-09 07:02:07,089 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:02:07,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 90 treesize of output 92 [2024-11-09 07:02:07,865 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:02:07,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 85 treesize of output 93 [2024-11-09 07:02:08,732 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:02:08,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 90 treesize of output 92 [2024-11-09 07:02:09,466 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:02:09,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 90 treesize of output 92 [2024-11-09 07:02:10,270 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:02:10,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 85 treesize of output 102 [2024-11-09 07:02:12,186 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:02:12,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 113 treesize of output 121 [2024-11-09 07:02:12,592 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:02:12,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 108 treesize of output 107 [2024-11-09 07:02:13,188 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:02:13,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 90 treesize of output 38 [2024-11-09 07:02:13,332 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 68 proven. 192 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-09 07:02:13,332 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:02:14,690 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:02:14,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [851675519] [2024-11-09 07:02:14,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [851675519] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:02:14,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1370385505] [2024-11-09 07:02:14,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:02:14,691 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 07:02:14,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 07:02:14,693 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 07:02:14,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (52)] Waiting until timeout for monitored process [2024-11-09 07:02:16,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:02:16,555 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-09 07:02:16,561 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:02:16,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:02:16,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:02:16,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:02:16,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 39 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 25 [2024-11-09 07:02:16,809 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:02:16,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 42 [2024-11-09 07:02:19,245 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:02:19,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 53 [2024-11-09 07:02:20,229 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:02:20,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 53 treesize of output 64 [2024-11-09 07:02:21,030 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:02:21,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 61 treesize of output 75 [2024-11-09 07:02:21,936 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:02:21,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 72 treesize of output 71 [2024-11-09 07:02:22,787 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:02:22,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 64 treesize of output 67 [2024-11-09 07:02:23,380 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:02:23,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 64 treesize of output 67 [2024-11-09 07:02:25,141 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:02:25,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 86 treesize of output 88 [2024-11-09 07:02:25,849 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:02:25,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 117 treesize of output 96 [2024-11-09 07:02:26,455 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:02:26,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 58 treesize of output 30 [2024-11-09 07:02:26,662 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 92 proven. 192 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-09 07:02:26,662 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:02:27,022 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-09 07:02:27,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1370385505] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 07:02:27,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:02:27,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11, 14] total 28 [2024-11-09 07:02:27,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015840281] [2024-11-09 07:02:27,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:02:27,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:02:27,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:02:27,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:02:27,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=764, Unknown=2, NotChecked=0, Total=930 [2024-11-09 07:02:27,025 INFO L87 Difference]: Start difference. First operand 853 states and 1038 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 07:02:27,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:02:27,980 INFO L93 Difference]: Finished difference Result 1603 states and 1948 transitions. [2024-11-09 07:02:27,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 07:02:27,982 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 123 [2024-11-09 07:02:27,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:02:27,985 INFO L225 Difference]: With dead ends: 1603 [2024-11-09 07:02:27,985 INFO L226 Difference]: Without dead ends: 903 [2024-11-09 07:02:27,987 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=171, Invalid=819, Unknown=2, NotChecked=0, Total=992 [2024-11-09 07:02:27,987 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 106 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 07:02:27,988 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 329 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 07:02:27,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2024-11-09 07:02:28,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 785. [2024-11-09 07:02:28,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 785 states, 699 states have (on average 1.190271816881259) internal successors, (832), 699 states have internal predecessors, (832), 56 states have call successors, (56), 29 states have call predecessors, (56), 29 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-09 07:02:28,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 944 transitions. [2024-11-09 07:02:28,315 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 944 transitions. Word has length 123 [2024-11-09 07:02:28,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:02:28,315 INFO L471 AbstractCegarLoop]: Abstraction has 785 states and 944 transitions. [2024-11-09 07:02:28,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 07:02:28,315 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 944 transitions. [2024-11-09 07:02:28,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 07:02:28,316 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:02:28,316 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:02:28,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (52)] Forceful destruction successful, exit code 0 [2024-11-09 07:02:28,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 (51)] Forceful destruction successful, exit code 0 [2024-11-09 07:02:28,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:02:28,717 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:02:28,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:02:28,718 INFO L85 PathProgramCache]: Analyzing trace with hash -141587549, now seen corresponding path program 1 times [2024-11-09 07:02:28,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:02:28,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1976449491] [2024-11-09 07:02:28,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:02:28,718 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 [2024-11-09 07:02:28,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:02:28,722 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:02:28,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 (53)] Waiting until timeout for monitored process [2024-11-09 07:02:29,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:02:29,243 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 07:02:29,249 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:02:29,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:02:29,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:02:29,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:02:29,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:02:29,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:02:29,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:02:29,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:02:29,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:02:29,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:02:29,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:02:29,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:02:29,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:02:29,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:02:29,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:02:29,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:02:29,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:02:29,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:02:29,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:02:29,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:02:29,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:02:29,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:02:29,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 21 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 91 [2024-11-09 07:02:29,820 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:02:29,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 116 treesize of output 128 [2024-11-09 07:02:32,968 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:02:32,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 115 treesize of output 132 [2024-11-09 07:02:37,048 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:02:37,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 120 treesize of output 122 [2024-11-09 07:02:40,247 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:02:40,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 105 treesize of output 119 [2024-11-09 07:02:43,526 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:02:43,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 110 treesize of output 109 [2024-11-09 07:02:46,570 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:02:46,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 100 treesize of output 96 [2024-11-09 07:02:49,429 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:02:49,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 90 treesize of output 83 [2024-11-09 07:02:54,877 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:02:54,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 93 treesize of output 95 [2024-11-09 07:02:55,183 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:02:55,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 109 treesize of output 114 [2024-11-09 07:02:55,792 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:02:55,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 91 treesize of output 39 [2024-11-09 07:02:55,971 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 332 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 07:02:55,972 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:02:57,285 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:02:57,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1976449491] [2024-11-09 07:02:57,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1976449491] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:02:57,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [875275437] [2024-11-09 07:02:57,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:02:57,286 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 07:02:57,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 07:02:57,287 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 07:02:57,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (54)] Waiting until timeout for monitored process [2024-11-09 07:02:58,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:02:58,988 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-09 07:02:58,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:02:59,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:02:59,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:02:59,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:02:59,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 39 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 25 [2024-11-09 07:02:59,246 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:02:59,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 34 [2024-11-09 07:02:59,473 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:02:59,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 42 [2024-11-09 07:03:00,184 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:03:00,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 45 [2024-11-09 07:03:00,561 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:03:00,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 53 [2024-11-09 07:03:01,143 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:03:01,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 53 treesize of output 64 [2024-11-09 07:03:01,870 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:03:01,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 64 treesize of output 67 [2024-11-09 07:03:02,406 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:03:02,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 64 treesize of output 60 [2024-11-09 07:03:04,117 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:03:04,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 78 treesize of output 77 [2024-11-09 07:03:04,469 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:03:04,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 86 treesize of output 95 [2024-11-09 07:03:07,054 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:03:07,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 88 treesize of output 48 [2024-11-09 07:03:07,145 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 196 proven. 96 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 07:03:07,145 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:03:07,683 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-09 07:03:07,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [875275437] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 07:03:07,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:03:07,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14, 12] total 30 [2024-11-09 07:03:07,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683792951] [2024-11-09 07:03:07,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:03:07,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 07:03:07,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:03:07,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 07:03:07,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=843, Unknown=9, NotChecked=0, Total=1056 [2024-11-09 07:03:07,685 INFO L87 Difference]: Start difference. First operand 785 states and 944 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 07:03:09,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:03:09,203 INFO L93 Difference]: Finished difference Result 1649 states and 1976 transitions. [2024-11-09 07:03:09,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 07:03:09,205 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 123 [2024-11-09 07:03:09,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:03:09,208 INFO L225 Difference]: With dead ends: 1649 [2024-11-09 07:03:09,208 INFO L226 Difference]: Without dead ends: 1014 [2024-11-09 07:03:09,209 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 445 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 22.7s TimeCoverageRelationStatistics Valid=228, Invalid=953, Unknown=9, NotChecked=0, Total=1190 [2024-11-09 07:03:09,210 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 58 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:03:09,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 502 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 07:03:09,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2024-11-09 07:03:09,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 760. [2024-11-09 07:03:09,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 674 states have (on average 1.1795252225519288) internal successors, (795), 674 states have internal predecessors, (795), 56 states have call successors, (56), 29 states have call predecessors, (56), 29 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-09 07:03:09,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 907 transitions. [2024-11-09 07:03:09,562 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 907 transitions. Word has length 123 [2024-11-09 07:03:09,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:03:09,563 INFO L471 AbstractCegarLoop]: Abstraction has 760 states and 907 transitions. [2024-11-09 07:03:09,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 07:03:09,563 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 907 transitions. [2024-11-09 07:03:09,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 07:03:09,563 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:03:09,564 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:03:09,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (54)] Forceful destruction successful, exit code 0 [2024-11-09 07:03:09,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 (53)] Ended with exit code 0 [2024-11-09 07:03:09,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:03:09,964 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:03:09,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:03:09,965 INFO L85 PathProgramCache]: Analyzing trace with hash -712050171, now seen corresponding path program 1 times [2024-11-09 07:03:09,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:03:09,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [719248266] [2024-11-09 07:03:09,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:03:09,966 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 [2024-11-09 07:03:09,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:03:09,969 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:03:09,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:03:10,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:03:10,354 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 07:03:10,356 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:03:10,458 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-09 07:03:10,459 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:03:10,459 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:03:10,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [719248266] [2024-11-09 07:03:10,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [719248266] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:03:10,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:03:10,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:03:10,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699020769] [2024-11-09 07:03:10,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:03:10,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:03:10,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:03:10,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:03:10,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:03:10,461 INFO L87 Difference]: Start difference. First operand 760 states and 907 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 07:03:10,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:03:10,754 INFO L93 Difference]: Finished difference Result 1749 states and 2106 transitions. [2024-11-09 07:03:10,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:03:10,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 123 [2024-11-09 07:03:10,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:03:10,758 INFO L225 Difference]: With dead ends: 1749 [2024-11-09 07:03:10,758 INFO L226 Difference]: Without dead ends: 1157 [2024-11-09 07:03:10,759 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:03:10,759 INFO L432 NwaCegarLoop]: 179 mSDtfsCounter, 41 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:03:10,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 297 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:03:10,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2024-11-09 07:03:11,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1122. [2024-11-09 07:03:11,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 1036 states have (on average 1.1988416988416988) internal successors, (1242), 1036 states have internal predecessors, (1242), 56 states have call successors, (56), 29 states have call predecessors, (56), 29 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-09 07:03:11,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1354 transitions. [2024-11-09 07:03:11,032 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1354 transitions. Word has length 123 [2024-11-09 07:03:11,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:03:11,033 INFO L471 AbstractCegarLoop]: Abstraction has 1122 states and 1354 transitions. [2024-11-09 07:03:11,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 07:03:11,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1354 transitions. [2024-11-09 07:03:11,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 07:03:11,035 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:03:11,035 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:03:11,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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)] Forceful destruction successful, exit code 0 [2024-11-09 07:03:11,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:03:11,236 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:03:11,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:03:11,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1062957191, now seen corresponding path program 1 times [2024-11-09 07:03:11,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:03:11,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [497199961] [2024-11-09 07:03:11,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:03:11,238 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 [2024-11-09 07:03:11,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:03:11,241 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:03:11,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 (56)] Waiting until timeout for monitored process [2024-11-09 07:03:11,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:03:11,718 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 07:03:11,721 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:03:11,870 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-09 07:03:11,870 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:03:11,870 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:03:11,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [497199961] [2024-11-09 07:03:11,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [497199961] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:03:11,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:03:11,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 07:03:11,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919567769] [2024-11-09 07:03:11,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:03:11,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 07:03:11,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:03:11,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 07:03:11,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:03:11,874 INFO L87 Difference]: Start difference. First operand 1122 states and 1354 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 07:03:12,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:03:12,414 INFO L93 Difference]: Finished difference Result 1139 states and 1373 transitions. [2024-11-09 07:03:12,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 07:03:12,415 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 123 [2024-11-09 07:03:12,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:03:12,418 INFO L225 Difference]: With dead ends: 1139 [2024-11-09 07:03:12,418 INFO L226 Difference]: Without dead ends: 1137 [2024-11-09 07:03:12,419 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:03:12,419 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 0 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:03:12,419 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 702 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:03:12,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2024-11-09 07:03:12,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1125. [2024-11-09 07:03:12,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1125 states, 1039 states have (on average 1.1982675649663137) internal successors, (1245), 1039 states have internal predecessors, (1245), 56 states have call successors, (56), 29 states have call predecessors, (56), 29 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-09 07:03:12,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1357 transitions. [2024-11-09 07:03:12,842 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1357 transitions. Word has length 123 [2024-11-09 07:03:12,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:03:12,845 INFO L471 AbstractCegarLoop]: Abstraction has 1125 states and 1357 transitions. [2024-11-09 07:03:12,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 07:03:12,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1357 transitions. [2024-11-09 07:03:12,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 07:03:12,846 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:03:12,847 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:03:12,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 (56)] Ended with exit code 0 [2024-11-09 07:03:13,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:03:13,051 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:03:13,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:03:13,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1247807363, now seen corresponding path program 1 times [2024-11-09 07:03:13,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:03:13,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [101858754] [2024-11-09 07:03:13,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:03:13,052 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 [2024-11-09 07:03:13,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:03:13,053 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:03:13,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 (57)] Waiting until timeout for monitored process [2024-11-09 07:03:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:03:13,672 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-09 07:03:13,677 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:03:13,682 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 14 treesize of output 10 [2024-11-09 07:03:13,842 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 0 case distinctions, treesize of input 30 treesize of output 14 [2024-11-09 07:03:13,935 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 0 case distinctions, treesize of input 25 treesize of output 24 [2024-11-09 07:03:14,148 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:03:14,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 35 treesize of output 37 [2024-11-09 07:03:14,454 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:03:14,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 45 treesize of output 50 [2024-11-09 07:03:14,850 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:03:14,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 53 [2024-11-09 07:03:15,283 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:03:15,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 62 treesize of output 73 [2024-11-09 07:03:15,812 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:03:15,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 92 treesize of output 83 [2024-11-09 07:03:15,927 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:03:15,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 96 treesize of output 83 [2024-11-09 07:03:16,184 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:03:16,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 101 treesize of output 97 [2024-11-09 07:03:17,414 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:03:17,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 147 treesize of output 63 [2024-11-09 07:03:17,771 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 07:03:17,771 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:03:17,772 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:03:17,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [101858754] [2024-11-09 07:03:17,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [101858754] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:03:17,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:03:17,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-09 07:03:17,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083433170] [2024-11-09 07:03:17,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:03:17,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 07:03:17,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:03:17,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 07:03:17,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2024-11-09 07:03:17,774 INFO L87 Difference]: Start difference. First operand 1125 states and 1357 transitions. Second operand has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-09 07:03:27,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:03:27,738 INFO L93 Difference]: Finished difference Result 1568 states and 1897 transitions. [2024-11-09 07:03:27,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-09 07:03:27,739 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 123 [2024-11-09 07:03:27,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:03:27,743 INFO L225 Difference]: With dead ends: 1568 [2024-11-09 07:03:27,743 INFO L226 Difference]: Without dead ends: 1566 [2024-11-09 07:03:27,744 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=261, Invalid=999, Unknown=0, NotChecked=0, Total=1260 [2024-11-09 07:03:27,744 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 437 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:03:27,744 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 859 Invalid, 1212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1139 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2024-11-09 07:03:27,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2024-11-09 07:03:28,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1274. [2024-11-09 07:03:28,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 1188 states have (on average 1.2079124579124578) internal successors, (1435), 1188 states have internal predecessors, (1435), 56 states have call successors, (56), 29 states have call predecessors, (56), 29 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-09 07:03:28,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 1547 transitions. [2024-11-09 07:03:28,195 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 1547 transitions. Word has length 123 [2024-11-09 07:03:28,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:03:28,196 INFO L471 AbstractCegarLoop]: Abstraction has 1274 states and 1547 transitions. [2024-11-09 07:03:28,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-09 07:03:28,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 1547 transitions. [2024-11-09 07:03:28,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 07:03:28,197 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:03:28,198 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:03:28,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 (57)] Forceful destruction successful, exit code 0 [2024-11-09 07:03:28,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:03:28,398 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:03:28,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:03:28,399 INFO L85 PathProgramCache]: Analyzing trace with hash -62080852, now seen corresponding path program 1 times [2024-11-09 07:03:28,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:03:28,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1269286553] [2024-11-09 07:03:28,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:03:28,400 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 [2024-11-09 07:03:28,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:03:28,404 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:03:28,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 (58)] Waiting until timeout for monitored process [2024-11-09 07:03:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:03:28,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 07:03:28,889 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:03:28,895 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-09 07:03:29,002 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 0 case distinctions, treesize of input 31 treesize of output 15 [2024-11-09 07:03:29,085 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 0 case distinctions, treesize of input 26 treesize of output 25 [2024-11-09 07:03:29,314 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:03:29,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 36 treesize of output 38 [2024-11-09 07:03:29,664 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:03:29,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 46 treesize of output 51 [2024-11-09 07:03:30,209 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:03:30,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 65 [2024-11-09 07:03:30,566 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:03:30,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 81 treesize of output 39 [2024-11-09 07:03:30,619 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 279 proven. 24 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-09 07:03:30,619 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:03:31,169 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 15 proven. 24 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 07:03:31,169 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:03:31,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1269286553] [2024-11-09 07:03:31,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1269286553] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:03:31,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1544569495] [2024-11-09 07:03:31,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:03:31,169 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 07:03:31,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 07:03:31,171 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 07:03:31,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (59)] Waiting until timeout for monitored process [2024-11-09 07:03:33,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:03:33,021 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 07:03:33,026 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:03:33,233 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 [2024-11-09 07:03:33,294 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 12 treesize of output 8 [2024-11-09 07:03:33,527 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 20 [2024-11-09 07:03:33,790 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:03:33,790 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 1 case distinctions, treesize of input 29 treesize of output 31 [2024-11-09 07:03:34,121 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:03:34,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 42 [2024-11-09 07:03:34,594 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:03:34,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 54 [2024-11-09 07:03:35,320 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:03:35,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 67 treesize of output 70 [2024-11-09 07:03:35,432 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:03:35,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 67 treesize of output 70 [2024-11-09 07:03:35,668 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:03:35,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 32 [2024-11-09 07:03:35,795 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-09 07:03:35,795 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:03:35,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1544569495] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:03:35,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:03:35,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11, 7] total 23 [2024-11-09 07:03:35,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34806931] [2024-11-09 07:03:35,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:03:35,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 07:03:35,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:03:35,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 07:03:35,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2024-11-09 07:03:35,798 INFO L87 Difference]: Start difference. First operand 1274 states and 1547 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 10 states have internal predecessors, (68), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-09 07:03:38,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:03:50,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:03:50,027 INFO L93 Difference]: Finished difference Result 1975 states and 2409 transitions. [2024-11-09 07:03:50,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 07:03:50,028 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 10 states have internal predecessors, (68), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 123 [2024-11-09 07:03:50,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:03:50,031 INFO L225 Difference]: With dead ends: 1975 [2024-11-09 07:03:50,031 INFO L226 Difference]: Without dead ends: 1447 [2024-11-09 07:03:50,032 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 344 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2024-11-09 07:03:50,032 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 344 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:03:50,033 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 445 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 13.4s Time] [2024-11-09 07:03:50,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1447 states. [2024-11-09 07:03:50,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1447 to 1287. [2024-11-09 07:03:50,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 1201 states have (on average 1.2081598667776852) internal successors, (1451), 1201 states have internal predecessors, (1451), 56 states have call successors, (56), 29 states have call predecessors, (56), 29 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-09 07:03:50,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1563 transitions. [2024-11-09 07:03:50,307 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1563 transitions. Word has length 123 [2024-11-09 07:03:50,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:03:50,308 INFO L471 AbstractCegarLoop]: Abstraction has 1287 states and 1563 transitions. [2024-11-09 07:03:50,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 10 states have internal predecessors, (68), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-09 07:03:50,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1563 transitions. [2024-11-09 07:03:50,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 07:03:50,309 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:03:50,309 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:03:50,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 (58)] Ended with exit code 0 [2024-11-09 07:03:50,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (59)] Forceful destruction successful, exit code 0 [2024-11-09 07:03:50,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 07:03:50,710 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:03:50,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:03:50,711 INFO L85 PathProgramCache]: Analyzing trace with hash 156773866, now seen corresponding path program 1 times [2024-11-09 07:03:50,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:03:50,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2088667493] [2024-11-09 07:03:50,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:03:50,711 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 [2024-11-09 07:03:50,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:03:50,713 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:03:50,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 (60)] Waiting until timeout for monitored process [2024-11-09 07:03:51,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:03:51,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 07:03:51,260 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:03:51,266 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 [2024-11-09 07:03:51,373 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 0 case distinctions, treesize of input 26 treesize of output 25 [2024-11-09 07:03:51,593 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:03:51,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 41 treesize of output 28 [2024-11-09 07:03:51,770 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:03:51,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 36 treesize of output 38 [2024-11-09 07:03:52,159 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:03:52,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 53 treesize of output 52 [2024-11-09 07:03:52,620 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:03:52,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 61 treesize of output 63 [2024-11-09 07:03:52,820 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:03:52,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 76 treesize of output 66 [2024-11-09 07:03:53,156 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:03:53,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 101 treesize of output 47 [2024-11-09 07:03:53,395 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 227 proven. 18 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-11-09 07:03:53,396 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:03:54,760 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 21 proven. 18 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 07:03:54,760 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:03:54,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2088667493] [2024-11-09 07:03:54,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2088667493] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:03:54,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1309222011] [2024-11-09 07:03:54,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:03:54,761 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 07:03:54,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 07:03:54,762 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 07:03:54,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (61)] Waiting until timeout for monitored process [2024-11-09 07:03:56,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:03:56,636 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 07:03:56,641 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:03:56,783 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2024-11-09 07:03:57,091 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 20 [2024-11-09 07:03:57,441 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:03:57,441 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 1 case distinctions, treesize of input 32 treesize of output 23 [2024-11-09 07:03:57,654 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:03:57,654 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 1 case distinctions, treesize of input 29 treesize of output 31 [2024-11-09 07:03:58,137 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:03:58,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 34 [2024-11-09 07:03:58,450 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:03:58,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 42 [2024-11-09 07:03:59,071 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:03:59,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 54 [2024-11-09 07:04:00,259 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:04:00,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 68 treesize of output 64 [2024-11-09 07:04:00,317 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:04:00,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 85 treesize of output 45 [2024-11-09 07:04:00,509 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 300 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-09 07:04:00,509 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:04:00,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1309222011] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:04:00,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:04:00,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [15, 12] total 34 [2024-11-09 07:04:00,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762451280] [2024-11-09 07:04:00,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:04:00,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 07:04:00,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:04:00,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 07:04:00,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=969, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 07:04:00,511 INFO L87 Difference]: Start difference. First operand 1287 states and 1563 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-09 07:04:05,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:04:05,625 INFO L93 Difference]: Finished difference Result 1992 states and 2434 transitions. [2024-11-09 07:04:05,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 07:04:05,626 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 123 [2024-11-09 07:04:05,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:04:05,630 INFO L225 Difference]: With dead ends: 1992 [2024-11-09 07:04:05,630 INFO L226 Difference]: Without dead ends: 1453 [2024-11-09 07:04:05,631 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 333 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=163, Invalid=1027, Unknown=0, NotChecked=0, Total=1190 [2024-11-09 07:04:05,631 INFO L432 NwaCegarLoop]: 148 mSDtfsCounter, 370 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:04:05,632 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 492 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-09 07:04:05,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2024-11-09 07:04:05,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1298. [2024-11-09 07:04:05,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1298 states, 1212 states have (on average 1.2095709570957096) internal successors, (1466), 1212 states have internal predecessors, (1466), 56 states have call successors, (56), 29 states have call predecessors, (56), 29 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-09 07:04:05,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 1578 transitions. [2024-11-09 07:04:06,000 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 1578 transitions. Word has length 123 [2024-11-09 07:04:06,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:04:06,000 INFO L471 AbstractCegarLoop]: Abstraction has 1298 states and 1578 transitions. [2024-11-09 07:04:06,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-09 07:04:06,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 1578 transitions. [2024-11-09 07:04:06,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 07:04:06,001 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:04:06,002 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:04:06,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 (60)] Forceful destruction successful, exit code 0 [2024-11-09 07:04:06,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (61)] Forceful destruction successful, exit code 0 [2024-11-09 07:04:06,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 07:04:06,402 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:04:06,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:04:06,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1845717608, now seen corresponding path program 1 times [2024-11-09 07:04:06,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:04:06,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1946587611] [2024-11-09 07:04:06,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:04:06,404 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 [2024-11-09 07:04:06,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:04:06,405 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:04:06,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 (62)] Waiting until timeout for monitored process [2024-11-09 07:04:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:04:06,946 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 07:04:06,950 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:04:06,956 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 [2024-11-09 07:04:07,053 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 0 case distinctions, treesize of input 26 treesize of output 25 [2024-11-09 07:04:07,259 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:04:07,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 41 treesize of output 28 [2024-11-09 07:04:07,426 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:04:07,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 41 treesize of output 28 [2024-11-09 07:04:07,637 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:04:07,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 43 treesize of output 48 [2024-11-09 07:04:08,001 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:04:08,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 59 [2024-11-09 07:04:08,167 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:04:08,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 72 treesize of output 86 [2024-11-09 07:04:08,580 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:04:08,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 112 treesize of output 52 [2024-11-09 07:04:08,828 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 195 proven. 18 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-11-09 07:04:08,828 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:04:10,332 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 21 proven. 18 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 07:04:10,332 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:04:10,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1946587611] [2024-11-09 07:04:10,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1946587611] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:04:10,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [485861187] [2024-11-09 07:04:10,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:04:10,333 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 07:04:10,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 07:04:10,334 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 07:04:10,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (63)] Waiting until timeout for monitored process [2024-11-09 07:04:11,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:04:11,937 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-09 07:04:11,941 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:04:12,170 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 [2024-11-09 07:04:12,644 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 22 treesize of output 21 [2024-11-09 07:04:12,983 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:04:12,983 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 1 case distinctions, treesize of input 33 treesize of output 24 [2024-11-09 07:04:13,160 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:04:13,160 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 1 case distinctions, treesize of input 33 treesize of output 24 [2024-11-09 07:04:13,382 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:04:13,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 40 [2024-11-09 07:04:13,846 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:04:13,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 51 [2024-11-09 07:04:14,067 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:04:14,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 74 [2024-11-09 07:04:14,503 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:04:14,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 96 treesize of output 52 [2024-11-09 07:04:14,531 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 195 proven. 18 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-11-09 07:04:14,531 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:04:15,122 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 21 proven. 18 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 07:04:15,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [485861187] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:04:15,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260890094] [2024-11-09 07:04:15,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:04:15,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:04:15,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:04:15,124 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:04:15,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2024-11-09 07:04:15,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:04:15,538 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 07:04:15,542 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:04:15,689 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 0 case distinctions, treesize of input 26 treesize of output 25 [2024-11-09 07:04:15,884 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:04:15,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 41 treesize of output 28 [2024-11-09 07:04:16,034 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:04:16,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 36 treesize of output 38 [2024-11-09 07:04:16,523 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:04:16,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 53 treesize of output 52 [2024-11-09 07:04:17,176 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:04:17,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 61 treesize of output 63 [2024-11-09 07:04:17,506 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:04:17,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 77 treesize of output 91 [2024-11-09 07:04:18,048 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:04:18,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 117 treesize of output 57 [2024-11-09 07:04:18,072 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 206 proven. 54 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-09 07:04:18,073 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:04:18,601 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 21 proven. 18 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 07:04:18,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260890094] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:04:18,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 07:04:18,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 15, 12, 17, 12] total 40 [2024-11-09 07:04:18,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847131881] [2024-11-09 07:04:18,602 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 07:04:18,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-09 07:04:18,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:04:18,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-09 07:04:18,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=1304, Unknown=0, NotChecked=0, Total=1560 [2024-11-09 07:04:18,604 INFO L87 Difference]: Start difference. First operand 1298 states and 1578 transitions. Second operand has 40 states, 36 states have (on average 4.75) internal successors, (171), 38 states have internal predecessors, (171), 10 states have call successors, (38), 5 states have call predecessors, (38), 8 states have return successors, (38), 8 states have call predecessors, (38), 10 states have call successors, (38) [2024-11-09 07:04:41,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:04:41,357 INFO L93 Difference]: Finished difference Result 3065 states and 3686 transitions. [2024-11-09 07:04:41,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-09 07:04:41,358 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 36 states have (on average 4.75) internal successors, (171), 38 states have internal predecessors, (171), 10 states have call successors, (38), 5 states have call predecessors, (38), 8 states have return successors, (38), 8 states have call predecessors, (38), 10 states have call successors, (38) Word has length 123 [2024-11-09 07:04:41,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:04:41,362 INFO L225 Difference]: With dead ends: 3065 [2024-11-09 07:04:41,363 INFO L226 Difference]: Without dead ends: 2180 [2024-11-09 07:04:41,365 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 780 GetRequests, 698 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1646 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=1235, Invalid=5571, Unknown=0, NotChecked=0, Total=6806 [2024-11-09 07:04:41,366 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 875 mSDsluCounter, 2141 mSDsCounter, 0 mSdLazyCounter, 4161 mSolverCounterSat, 301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 2286 SdHoareTripleChecker+Invalid, 4462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 301 IncrementalHoareTripleChecker+Valid, 4161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2024-11-09 07:04:41,366 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 2286 Invalid, 4462 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [301 Valid, 4161 Invalid, 0 Unknown, 0 Unchecked, 16.9s Time] [2024-11-09 07:04:41,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2180 states. [2024-11-09 07:04:41,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2180 to 1352. [2024-11-09 07:04:41,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1266 states have (on average 1.2132701421800949) internal successors, (1536), 1266 states have internal predecessors, (1536), 56 states have call successors, (56), 29 states have call predecessors, (56), 29 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-09 07:04:41,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1648 transitions. [2024-11-09 07:04:41,716 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1648 transitions. Word has length 123 [2024-11-09 07:04:41,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:04:41,716 INFO L471 AbstractCegarLoop]: Abstraction has 1352 states and 1648 transitions. [2024-11-09 07:04:41,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 36 states have (on average 4.75) internal successors, (171), 38 states have internal predecessors, (171), 10 states have call successors, (38), 5 states have call predecessors, (38), 8 states have return successors, (38), 8 states have call predecessors, (38), 10 states have call successors, (38) [2024-11-09 07:04:41,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1648 transitions. [2024-11-09 07:04:41,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-09 07:04:41,718 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:04:41,718 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:04:41,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (63)] Ended with exit code 0 [2024-11-09 07:04:41,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 (62)] Forceful destruction successful, exit code 0 [2024-11-09 07:04:42,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2024-11-09 07:04:42,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:04:42,320 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:04:42,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:04:42,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1994898851, now seen corresponding path program 1 times [2024-11-09 07:04:42,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:04:42,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1984514495] [2024-11-09 07:04:42,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:04:42,321 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 [2024-11-09 07:04:42,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:04:42,323 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:04:42,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 (65)] Waiting until timeout for monitored process [2024-11-09 07:04:43,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:04:43,039 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-09 07:04:43,043 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:04:43,048 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 [2024-11-09 07:04:43,054 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 14 treesize of output 10 [2024-11-09 07:04:43,156 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 0 case distinctions, treesize of input 30 treesize of output 14 [2024-11-09 07:04:43,248 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 0 case distinctions, treesize of input 30 treesize of output 14 [2024-11-09 07:04:43,335 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 0 case distinctions, treesize of input 25 treesize of output 24 [2024-11-09 07:04:43,554 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:04:43,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 35 treesize of output 37 [2024-11-09 07:04:43,924 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:04:43,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 52 treesize of output 51 [2024-11-09 07:04:44,428 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:04:44,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 81 treesize of output 89 [2024-11-09 07:04:44,665 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:04:44,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 93 treesize of output 95 [2024-11-09 07:04:44,941 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:04:44,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 90 treesize of output 110 [2024-11-09 07:04:45,461 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:04:45,461 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 97 treesize of output 39 [2024-11-09 07:04:45,574 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-09 07:04:45,574 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:04:45,574 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:04:45,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1984514495] [2024-11-09 07:04:45,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1984514495] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:04:45,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:04:45,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-09 07:04:45,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264815956] [2024-11-09 07:04:45,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:04:45,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 07:04:45,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:04:45,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 07:04:45,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2024-11-09 07:04:45,577 INFO L87 Difference]: Start difference. First operand 1352 states and 1648 transitions. Second operand has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-09 07:04:52,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:04:52,466 INFO L93 Difference]: Finished difference Result 2281 states and 2792 transitions. [2024-11-09 07:04:52,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 07:04:52,467 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 124 [2024-11-09 07:04:52,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:04:52,472 INFO L225 Difference]: With dead ends: 2281 [2024-11-09 07:04:52,472 INFO L226 Difference]: Without dead ends: 1708 [2024-11-09 07:04:52,473 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2024-11-09 07:04:52,473 INFO L432 NwaCegarLoop]: 172 mSDtfsCounter, 545 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:04:52,474 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [545 Valid, 696 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2024-11-09 07:04:52,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1708 states. [2024-11-09 07:04:52,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1708 to 1367. [2024-11-09 07:04:52,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1367 states, 1281 states have (on average 1.213895394223263) internal successors, (1555), 1281 states have internal predecessors, (1555), 56 states have call successors, (56), 29 states have call predecessors, (56), 29 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-09 07:04:52,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1367 states to 1367 states and 1667 transitions. [2024-11-09 07:04:52,910 INFO L78 Accepts]: Start accepts. Automaton has 1367 states and 1667 transitions. Word has length 124 [2024-11-09 07:04:52,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:04:52,910 INFO L471 AbstractCegarLoop]: Abstraction has 1367 states and 1667 transitions. [2024-11-09 07:04:52,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-09 07:04:52,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1367 states and 1667 transitions. [2024-11-09 07:04:52,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-09 07:04:52,912 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:04:52,912 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:04:52,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 (65)] Forceful destruction successful, exit code 0 [2024-11-09 07:04:53,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:04:53,113 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:04:53,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:04:53,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1177250401, now seen corresponding path program 1 times [2024-11-09 07:04:53,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:04:53,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [462755868] [2024-11-09 07:04:53,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:04:53,114 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 [2024-11-09 07:04:53,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:04:53,116 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:04:53,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 (66)] Waiting until timeout for monitored process [2024-11-09 07:04:53,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:04:53,604 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 07:04:53,608 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:04:53,613 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 [2024-11-09 07:04:53,709 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 0 case distinctions, treesize of input 26 treesize of output 25 [2024-11-09 07:04:53,908 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:04:53,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 41 treesize of output 28 [2024-11-09 07:04:54,064 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:04:54,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 36 treesize of output 38 [2024-11-09 07:04:54,376 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:04:54,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 51 treesize of output 41 [2024-11-09 07:04:54,671 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:04:54,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 61 [2024-11-09 07:04:54,930 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:04:54,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 68 treesize of output 73 [2024-11-09 07:04:55,105 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:04:55,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 83 treesize of output 76 [2024-11-09 07:04:55,450 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:04:55,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 91 treesize of output 39 [2024-11-09 07:04:55,498 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 247 proven. 24 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-11-09 07:04:55,499 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:04:56,055 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 15 proven. 24 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 07:04:56,055 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:04:56,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [462755868] [2024-11-09 07:04:56,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [462755868] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:04:56,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [401355083] [2024-11-09 07:04:56,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:04:56,056 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 07:04:56,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 07:04:56,057 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 07:04:56,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (67)] Waiting until timeout for monitored process [2024-11-09 07:04:57,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:04:57,800 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 07:04:57,805 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:04:58,003 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 [2024-11-09 07:04:58,064 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 12 treesize of output 8 [2024-11-09 07:04:58,277 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 20 [2024-11-09 07:04:58,592 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:04:58,593 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 1 case distinctions, treesize of input 29 treesize of output 31 [2024-11-09 07:04:59,007 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:04:59,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 34 [2024-11-09 07:04:59,303 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:04:59,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 50 [2024-11-09 07:04:59,724 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:04:59,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 63 treesize of output 73 [2024-11-09 07:05:00,003 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:05:00,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 74 treesize of output 76 [2024-11-09 07:05:00,399 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-09 07:05:00,399 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:05:00,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [401355083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:05:00,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:05:00,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11, 7] total 21 [2024-11-09 07:05:00,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93613976] [2024-11-09 07:05:00,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:05:00,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 07:05:00,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:05:00,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 07:05:00,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2024-11-09 07:05:00,402 INFO L87 Difference]: Start difference. First operand 1367 states and 1667 transitions. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 9 states have internal predecessors, (66), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-09 07:05:05,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:05:05,103 INFO L93 Difference]: Finished difference Result 2136 states and 2619 transitions. [2024-11-09 07:05:05,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 07:05:05,104 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 9 states have internal predecessors, (66), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 124 [2024-11-09 07:05:05,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:05:05,107 INFO L225 Difference]: With dead ends: 2136 [2024-11-09 07:05:05,107 INFO L226 Difference]: Without dead ends: 1549 [2024-11-09 07:05:05,108 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 348 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2024-11-09 07:05:05,108 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 253 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:05:05,108 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 452 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-09 07:05:05,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1549 states. [2024-11-09 07:05:05,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1549 to 1389. [2024-11-09 07:05:05,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1389 states, 1303 states have (on average 1.2164236377590176) internal successors, (1585), 1303 states have internal predecessors, (1585), 56 states have call successors, (56), 29 states have call predecessors, (56), 29 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-09 07:05:05,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 1697 transitions. [2024-11-09 07:05:05,394 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 1697 transitions. Word has length 124 [2024-11-09 07:05:05,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:05:05,394 INFO L471 AbstractCegarLoop]: Abstraction has 1389 states and 1697 transitions. [2024-11-09 07:05:05,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 9 states have internal predecessors, (66), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-09 07:05:05,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 1697 transitions. [2024-11-09 07:05:05,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-09 07:05:05,396 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:05:05,396 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:05:05,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 (66)] Forceful destruction successful, exit code 0 [2024-11-09 07:05:05,607 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (67)] Ended with exit code 0 [2024-11-09 07:05:05,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 07:05:05,797 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:05:05,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:05:05,797 INFO L85 PathProgramCache]: Analyzing trace with hash 166133151, now seen corresponding path program 1 times [2024-11-09 07:05:05,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:05:05,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1114241577] [2024-11-09 07:05:05,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:05:05,798 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 [2024-11-09 07:05:05,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:05:05,799 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:05:05,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/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 (68)] Waiting until timeout for monitored process [2024-11-09 07:05:06,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:05:06,297 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 07:05:06,300 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:05:06,305 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 [2024-11-09 07:05:06,399 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 0 case distinctions, treesize of input 31 treesize of output 15 [2024-11-09 07:05:06,471 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 0 case distinctions, treesize of input 26 treesize of output 25 [2024-11-09 07:05:06,667 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:05:06,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 41 treesize of output 28 [2024-11-09 07:05:06,857 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:05:06,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 43 treesize of output 48 [2024-11-09 07:05:07,039 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:05:07,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 60 [2024-11-09 07:05:07,170 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:05:07,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 73 treesize of output 63 [2024-11-09 07:05:07,474 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:05:07,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 39 [2024-11-09 07:05:07,742 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 227 proven. 18 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-11-09 07:05:07,742 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:05:09,146 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 21 proven. 18 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 07:05:09,146 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:05:09,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1114241577] [2024-11-09 07:05:09,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1114241577] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:05:09,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [132869038] [2024-11-09 07:05:09,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:05:09,147 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 07:05:09,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 07:05:09,149 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 07:05:09,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f824608-40a3-4b9c-a538-283e5aa6c5d3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (69)] Waiting until timeout for monitored process [2024-11-09 07:05:10,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:05:10,854 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 07:05:10,857 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:05:11,339 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 17 treesize of output 17