./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-9.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_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-9.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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_14746287-e88d-45f8-a271-e2e9b6074256/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 68b0cda5422c6df9a05dd00f43cb56ae62ac5ef3a6cb82099875e56a3f490744 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:31:12,405 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:31:12,511 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 05:31:12,520 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:31:12,520 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:31:12,556 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:31:12,557 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:31:12,558 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:31:12,559 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:31:12,560 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:31:12,560 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:31:12,571 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:31:12,572 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:31:12,572 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:31:12,573 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:31:12,573 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:31:12,573 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:31:12,574 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:31:12,574 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:31:12,577 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:31:12,577 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:31:12,581 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:31:12,582 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:31:12,582 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:31:12,583 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:31:12,583 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:31:12,583 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:31:12,583 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:31:12,584 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:31:12,584 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:31:12,584 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:31:12,585 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:31:12,586 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:31:12,587 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:31:12,587 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:31:12,588 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:31:12,589 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:31:12,589 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:31:12,590 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:31:12,590 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:31:12,590 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:31:12,591 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:31:12,591 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:31:12,592 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:31:12,593 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:31:12,593 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:31:12,593 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:31:12,594 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_14746287-e88d-45f8-a271-e2e9b6074256/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68b0cda5422c6df9a05dd00f43cb56ae62ac5ef3a6cb82099875e56a3f490744 [2024-11-09 05:31:12,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:31:12,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:31:12,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:31:12,956 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:31:12,957 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:31:12,959 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-9.i Unable to find full path for "g++" [2024-11-09 05:31:15,114 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:31:15,370 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:31:15,371 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-9.i [2024-11-09 05:31:15,382 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/data/9add7e520/aa8a9e16594c4dd09fb41d55c1f8ec16/FLAGd04a80e48 [2024-11-09 05:31:15,400 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/data/9add7e520/aa8a9e16594c4dd09fb41d55c1f8ec16 [2024-11-09 05:31:15,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:31:15,405 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:31:15,407 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:31:15,407 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:31:15,414 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:31:15,415 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:31:15" (1/1) ... [2024-11-09 05:31:15,417 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cef39d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:31:15, skipping insertion in model container [2024-11-09 05:31:15,417 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:31:15" (1/1) ... [2024-11-09 05:31:15,450 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:31:15,660 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_14746287-e88d-45f8-a271-e2e9b6074256/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-9.i[915,928] [2024-11-09 05:31:15,725 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:31:15,744 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:31:15,758 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_14746287-e88d-45f8-a271-e2e9b6074256/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-9.i[915,928] [2024-11-09 05:31:15,795 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:31:15,818 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:31:15,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:31:15 WrapperNode [2024-11-09 05:31:15,819 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:31:15,820 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:31:15,820 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:31:15,821 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:31:15,828 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:31:15" (1/1) ... [2024-11-09 05:31:15,840 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:31:15" (1/1) ... [2024-11-09 05:31:15,889 INFO L138 Inliner]: procedures = 29, calls = 103, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 341 [2024-11-09 05:31:15,890 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:31:15,891 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:31:15,891 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:31:15,891 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:31:15,904 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:31:15" (1/1) ... [2024-11-09 05:31:15,904 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:31:15" (1/1) ... [2024-11-09 05:31:15,910 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:31:15" (1/1) ... [2024-11-09 05:31:15,910 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:31:15" (1/1) ... [2024-11-09 05:31:15,939 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:31:15" (1/1) ... [2024-11-09 05:31:15,949 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:31:15" (1/1) ... [2024-11-09 05:31:15,954 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:31:15" (1/1) ... [2024-11-09 05:31:15,961 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:31:15" (1/1) ... [2024-11-09 05:31:15,965 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:31:15,973 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:31:15,973 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:31:15,974 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:31:15,975 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:31:15" (1/1) ... [2024-11-09 05:31:15,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:31:15,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:31:16,020 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:31:16,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:31:16,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:31:16,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2024-11-09 05:31:16,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 05:31:16,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2024-11-09 05:31:16,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 05:31:16,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2024-11-09 05:31:16,079 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 05:31:16,079 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 05:31:16,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:31:16,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:31:16,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:31:16,248 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:31:16,251 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:31:16,774 INFO L? ?]: Removed 81 outVars from TransFormulas that were not future-live. [2024-11-09 05:31:16,775 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:31:17,404 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:31:17,405 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 05:31:17,406 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:31:17 BoogieIcfgContainer [2024-11-09 05:31:17,406 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:31:17,410 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:31:17,411 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:31:17,415 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:31:17,417 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:31:15" (1/3) ... [2024-11-09 05:31:17,418 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bdeb6ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:31:17, skipping insertion in model container [2024-11-09 05:31:17,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:31:15" (2/3) ... [2024-11-09 05:31:17,419 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bdeb6ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:31:17, skipping insertion in model container [2024-11-09 05:31:17,420 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:31:17" (3/3) ... [2024-11-09 05:31:17,423 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-9.i [2024-11-09 05:31:17,447 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:31:17,447 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:31:17,537 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:31:17,545 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;@78470d7a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:31:17,546 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:31:17,551 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 05:31:17,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-09 05:31:17,561 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:31:17,562 INFO L215 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:31:17,563 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:31:17,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:31:17,569 INFO L85 PathProgramCache]: Analyzing trace with hash -202000091, now seen corresponding path program 1 times [2024-11-09 05:31:17,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:31:17,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765324792] [2024-11-09 05:31:17,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:31:17,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:31:18,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 05:31:18,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2084981346] [2024-11-09 05:31:18,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:31:18,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:31:18,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:31:18,573 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:31:18,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:31:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 05:31:19,079 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 05:31:19,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 05:31:19,420 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-09 05:31:19,424 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 05:31:19,425 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 05:31:19,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 05:31:19,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-09 05:31:19,635 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-09 05:31:19,695 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 05:31:19,700 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 05:31:19 BoogieIcfgContainer [2024-11-09 05:31:19,701 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 05:31:19,703 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 05:31:19,703 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 05:31:19,704 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 05:31:19,704 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:31:17" (3/4) ... [2024-11-09 05:31:19,708 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-09 05:31:19,709 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 05:31:19,712 INFO L158 Benchmark]: Toolchain (without parser) took 4305.75ms. Allocated memory was 169.9MB in the beginning and 207.6MB in the end (delta: 37.7MB). Free memory was 130.1MB in the beginning and 94.1MB in the end (delta: 36.0MB). Peak memory consumption was 74.8MB. Max. memory is 16.1GB. [2024-11-09 05:31:19,713 INFO L158 Benchmark]: CDTParser took 0.44ms. Allocated memory is still 169.9MB. Free memory is still 138.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 05:31:19,714 INFO L158 Benchmark]: CACSL2BoogieTranslator took 412.63ms. Allocated memory is still 169.9MB. Free memory was 130.1MB in the beginning and 114.4MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-09 05:31:19,715 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.82ms. Allocated memory is still 169.9MB. Free memory was 114.4MB in the beginning and 110.7MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 05:31:19,716 INFO L158 Benchmark]: Boogie Preprocessor took 80.10ms. Allocated memory is still 169.9MB. Free memory was 110.7MB in the beginning and 108.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 05:31:19,718 INFO L158 Benchmark]: RCFGBuilder took 1432.91ms. Allocated memory was 169.9MB in the beginning and 207.6MB in the end (delta: 37.7MB). Free memory was 108.1MB in the beginning and 138.8MB in the end (delta: -30.7MB). Peak memory consumption was 58.5MB. Max. memory is 16.1GB. [2024-11-09 05:31:19,719 INFO L158 Benchmark]: TraceAbstraction took 2291.33ms. Allocated memory is still 207.6MB. Free memory was 138.8MB in the beginning and 94.1MB in the end (delta: 44.6MB). Peak memory consumption was 43.6MB. Max. memory is 16.1GB. [2024-11-09 05:31:19,720 INFO L158 Benchmark]: Witness Printer took 6.77ms. Allocated memory is still 207.6MB. Free memory is still 94.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 05:31:19,725 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44ms. Allocated memory is still 169.9MB. Free memory is still 138.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 412.63ms. Allocated memory is still 169.9MB. Free memory was 130.1MB in the beginning and 114.4MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.82ms. Allocated memory is still 169.9MB. Free memory was 114.4MB in the beginning and 110.7MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 80.10ms. Allocated memory is still 169.9MB. Free memory was 110.7MB in the beginning and 108.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1432.91ms. Allocated memory was 169.9MB in the beginning and 207.6MB in the end (delta: 37.7MB). Free memory was 108.1MB in the beginning and 138.8MB in the end (delta: -30.7MB). Peak memory consumption was 58.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2291.33ms. Allocated memory is still 207.6MB. Free memory was 138.8MB in the beginning and 94.1MB in the end (delta: 44.6MB). Peak memory consumption was 43.6MB. Max. memory is 16.1GB. * Witness Printer took 6.77ms. Allocated memory is still 207.6MB. Free memory is still 94.1MB. There was no memory consumed. 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 52, overapproximation of shiftLeft at line 59. Possible FailurePath: [L33] unsigned char isInitial = 0; [L34-L44] struct WrapperStruct0 WrapperStruct0 = { 10, 4, 0, 100, 32, 9.2, 0.975, 1, -16 }; [L45] unsigned char last_1_WrapperStruct0_var_1_1 = 10; [L46] double last_1_WrapperStruct0_var_1_10 = 9.2; [L47] signed short int last_1_WrapperStruct0_var_1_12 = 1; [L48] signed long int last_1_WrapperStruct0_var_1_14 = -16; [L99] isInitial = 1 [L100] FCALL initially() [L101] COND TRUE 1 [L102] CALL updateLastVariables() [L89] EXPR WrapperStruct0.var_1_1 [L89] last_1_WrapperStruct0_var_1_1 = WrapperStruct0.var_1_1 [L90] EXPR WrapperStruct0.var_1_10 [L90] last_1_WrapperStruct0_var_1_10 = WrapperStruct0.var_1_10 [L91] EXPR WrapperStruct0.var_1_12 [L91] last_1_WrapperStruct0_var_1_12 = WrapperStruct0.var_1_12 [L92] EXPR WrapperStruct0.var_1_14 [L92] last_1_WrapperStruct0_var_1_14 = WrapperStruct0.var_1_14 [L102] RET updateLastVariables() [L103] CALL updateVariables() [L79] WrapperStruct0.var_1_3 = __VERIFIER_nondet_uchar() [L80] EXPR WrapperStruct0.var_1_3 VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_10=46/5, last_1_WrapperStruct0_var_1_12=1, last_1_WrapperStruct0_var_1_14=-16, last_1_WrapperStruct0_var_1_1=10] [L80] CALL assume_abort_if_not(WrapperStruct0.var_1_3 >= 0) VAL [WrapperStruct0={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct0_var_1_10=46/5, last_1_WrapperStruct0_var_1_12=1, last_1_WrapperStruct0_var_1_14=-16, last_1_WrapperStruct0_var_1_1=10] [L20] COND FALSE !(!cond) [L80] RET assume_abort_if_not(WrapperStruct0.var_1_3 >= 0) VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_10=46/5, last_1_WrapperStruct0_var_1_12=1, last_1_WrapperStruct0_var_1_14=-16, last_1_WrapperStruct0_var_1_1=10] [L81] EXPR WrapperStruct0.var_1_3 VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_10=46/5, last_1_WrapperStruct0_var_1_12=1, last_1_WrapperStruct0_var_1_14=-16, last_1_WrapperStruct0_var_1_1=10] [L81] CALL assume_abort_if_not(WrapperStruct0.var_1_3 <= 254) VAL [WrapperStruct0={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct0_var_1_10=46/5, last_1_WrapperStruct0_var_1_12=1, last_1_WrapperStruct0_var_1_14=-16, last_1_WrapperStruct0_var_1_1=10] [L20] COND FALSE !(!cond) [L81] RET assume_abort_if_not(WrapperStruct0.var_1_3 <= 254) VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_10=46/5, last_1_WrapperStruct0_var_1_12=1, last_1_WrapperStruct0_var_1_14=-16, last_1_WrapperStruct0_var_1_1=10] [L82] WrapperStruct0.var_1_7 = __VERIFIER_nondet_uchar() [L83] EXPR WrapperStruct0.var_1_7 VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_10=46/5, last_1_WrapperStruct0_var_1_12=1, last_1_WrapperStruct0_var_1_14=-16, last_1_WrapperStruct0_var_1_1=10] [L83] CALL assume_abort_if_not(WrapperStruct0.var_1_7 >= 0) VAL [WrapperStruct0={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct0_var_1_10=46/5, last_1_WrapperStruct0_var_1_12=1, last_1_WrapperStruct0_var_1_14=-16, last_1_WrapperStruct0_var_1_1=10] [L20] COND FALSE !(!cond) [L83] RET assume_abort_if_not(WrapperStruct0.var_1_7 >= 0) VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_10=46/5, last_1_WrapperStruct0_var_1_12=1, last_1_WrapperStruct0_var_1_14=-16, last_1_WrapperStruct0_var_1_1=10] [L84] EXPR WrapperStruct0.var_1_7 VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_10=46/5, last_1_WrapperStruct0_var_1_12=1, last_1_WrapperStruct0_var_1_14=-16, last_1_WrapperStruct0_var_1_1=10] [L84] CALL assume_abort_if_not(WrapperStruct0.var_1_7 <= 1) VAL [WrapperStruct0={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct0_var_1_10=46/5, last_1_WrapperStruct0_var_1_12=1, last_1_WrapperStruct0_var_1_14=-16, last_1_WrapperStruct0_var_1_1=10] [L20] COND FALSE !(!cond) [L84] RET assume_abort_if_not(WrapperStruct0.var_1_7 <= 1) VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_10=46/5, last_1_WrapperStruct0_var_1_12=1, last_1_WrapperStruct0_var_1_14=-16, last_1_WrapperStruct0_var_1_1=10] [L85] WrapperStruct0.var_1_11 = __VERIFIER_nondet_double() [L86] EXPR WrapperStruct0.var_1_11 [L86] EXPR WrapperStruct0.var_1_11 >= -922337.2036854765600e+13F && WrapperStruct0.var_1_11 <= -1.0e-20F [L86] EXPR (WrapperStruct0.var_1_11 >= -922337.2036854765600e+13F && WrapperStruct0.var_1_11 <= -1.0e-20F) || (WrapperStruct0.var_1_11 <= 9223372.036854765600e+12F && WrapperStruct0.var_1_11 >= 1.0e-20F ) [L86] EXPR WrapperStruct0.var_1_11 [L86] EXPR WrapperStruct0.var_1_11 <= 9223372.036854765600e+12F && WrapperStruct0.var_1_11 >= 1.0e-20F [L86] EXPR WrapperStruct0.var_1_11 [L86] EXPR WrapperStruct0.var_1_11 <= 9223372.036854765600e+12F && WrapperStruct0.var_1_11 >= 1.0e-20F [L86] EXPR (WrapperStruct0.var_1_11 >= -922337.2036854765600e+13F && WrapperStruct0.var_1_11 <= -1.0e-20F) || (WrapperStruct0.var_1_11 <= 9223372.036854765600e+12F && WrapperStruct0.var_1_11 >= 1.0e-20F ) VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_10=46/5, last_1_WrapperStruct0_var_1_12=1, last_1_WrapperStruct0_var_1_14=-16, last_1_WrapperStruct0_var_1_1=10] [L86] CALL assume_abort_if_not((WrapperStruct0.var_1_11 >= -922337.2036854765600e+13F && WrapperStruct0.var_1_11 <= -1.0e-20F) || (WrapperStruct0.var_1_11 <= 9223372.036854765600e+12F && WrapperStruct0.var_1_11 >= 1.0e-20F )) VAL [WrapperStruct0={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct0_var_1_10=46/5, last_1_WrapperStruct0_var_1_12=1, last_1_WrapperStruct0_var_1_14=-16, last_1_WrapperStruct0_var_1_1=10] [L20] COND FALSE !(!cond) [L86] RET assume_abort_if_not((WrapperStruct0.var_1_11 >= -922337.2036854765600e+13F && WrapperStruct0.var_1_11 <= -1.0e-20F) || (WrapperStruct0.var_1_11 <= 9223372.036854765600e+12F && WrapperStruct0.var_1_11 >= 1.0e-20F )) VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_10=46/5, last_1_WrapperStruct0_var_1_12=1, last_1_WrapperStruct0_var_1_14=-16, last_1_WrapperStruct0_var_1_1=10] [L103] RET updateVariables() [L104] CALL step() [L52] unsigned char stepLocal_0 = last_1_WrapperStruct0_var_1_10 > last_1_WrapperStruct0_var_1_10; [L53] COND FALSE !(((last_1_WrapperStruct0_var_1_12 + last_1_WrapperStruct0_var_1_1) < 10) || stepLocal_0) [L56] WrapperStruct0.var_1_12 = last_1_WrapperStruct0_var_1_12 [L58] EXPR WrapperStruct0.var_1_12 [L58] WrapperStruct0.var_1_14 = WrapperStruct0.var_1_12 [L59] EXPR WrapperStruct0.var_1_12 [L59] EXPR 10 << WrapperStruct0.var_1_12 [L59] EXPR WrapperStruct0.var_1_3 [L59] EXPR WrapperStruct0.var_1_14 [L59] COND FALSE !((10 << WrapperStruct0.var_1_12) < (WrapperStruct0.var_1_3 * WrapperStruct0.var_1_14)) [L62] WrapperStruct0.var_1_9 = 64 [L63] EXPR WrapperStruct0.var_1_11 [L63] WrapperStruct0.var_1_10 = WrapperStruct0.var_1_11 [L64] EXPR WrapperStruct0.var_1_12 [L64] COND TRUE WrapperStruct0.var_1_12 <= 16 [L65] EXPR WrapperStruct0.var_1_3 [L65] WrapperStruct0.var_1_1 = WrapperStruct0.var_1_3 [L104] RET step() [L105] CALL, EXPR property() [L95] EXPR WrapperStruct0.var_1_12 [L95] EXPR (WrapperStruct0.var_1_12 <= 16) ? (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3)) : ((((((WrapperStruct0.var_1_10) > (WrapperStruct0.var_1_10)) ? (WrapperStruct0.var_1_10) : (WrapperStruct0.var_1_10))) < WrapperStruct0.var_1_10) ? (WrapperStruct0.var_1_7 ? (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3)) : (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3))) : (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3))) [L95] EXPR WrapperStruct0.var_1_1 [L95] EXPR WrapperStruct0.var_1_3 [L95] EXPR (WrapperStruct0.var_1_12 <= 16) ? (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3)) : ((((((WrapperStruct0.var_1_10) > (WrapperStruct0.var_1_10)) ? (WrapperStruct0.var_1_10) : (WrapperStruct0.var_1_10))) < WrapperStruct0.var_1_10) ? (WrapperStruct0.var_1_7 ? (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3)) : (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3))) : (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3))) [L95] EXPR ((WrapperStruct0.var_1_12 <= 16) ? (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3)) : ((((((WrapperStruct0.var_1_10) > (WrapperStruct0.var_1_10)) ? (WrapperStruct0.var_1_10) : (WrapperStruct0.var_1_10))) < WrapperStruct0.var_1_10) ? (WrapperStruct0.var_1_7 ? (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3)) : (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3))) : (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3)))) && (((10 << WrapperStruct0.var_1_12) < (WrapperStruct0.var_1_3 * WrapperStruct0.var_1_14)) ? (WrapperStruct0.var_1_8 == ((signed short int) (WrapperStruct0.var_1_12 + WrapperStruct0.var_1_14))) : 1) [L95] EXPR WrapperStruct0.var_1_12 [L95] EXPR 10 << WrapperStruct0.var_1_12 [L95] EXPR WrapperStruct0.var_1_3 [L95] EXPR WrapperStruct0.var_1_14 [L95] EXPR ((10 << WrapperStruct0.var_1_12) < (WrapperStruct0.var_1_3 * WrapperStruct0.var_1_14)) ? (WrapperStruct0.var_1_8 == ((signed short int) (WrapperStruct0.var_1_12 + WrapperStruct0.var_1_14))) : 1 [L95] EXPR ((WrapperStruct0.var_1_12 <= 16) ? (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3)) : ((((((WrapperStruct0.var_1_10) > (WrapperStruct0.var_1_10)) ? (WrapperStruct0.var_1_10) : (WrapperStruct0.var_1_10))) < WrapperStruct0.var_1_10) ? (WrapperStruct0.var_1_7 ? (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3)) : (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3))) : (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3)))) && (((10 << WrapperStruct0.var_1_12) < (WrapperStruct0.var_1_3 * WrapperStruct0.var_1_14)) ? (WrapperStruct0.var_1_8 == ((signed short int) (WrapperStruct0.var_1_12 + WrapperStruct0.var_1_14))) : 1) [L95] EXPR (((WrapperStruct0.var_1_12 <= 16) ? (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3)) : ((((((WrapperStruct0.var_1_10) > (WrapperStruct0.var_1_10)) ? (WrapperStruct0.var_1_10) : (WrapperStruct0.var_1_10))) < WrapperStruct0.var_1_10) ? (WrapperStruct0.var_1_7 ? (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3)) : (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3))) : (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3)))) && (((10 << WrapperStruct0.var_1_12) < (WrapperStruct0.var_1_3 * WrapperStruct0.var_1_14)) ? (WrapperStruct0.var_1_8 == ((signed short int) (WrapperStruct0.var_1_12 + WrapperStruct0.var_1_14))) : 1)) && (WrapperStruct0.var_1_9 == ((unsigned char) 64)) [L95] EXPR WrapperStruct0.var_1_9 [L95] EXPR (((WrapperStruct0.var_1_12 <= 16) ? (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3)) : ((((((WrapperStruct0.var_1_10) > (WrapperStruct0.var_1_10)) ? (WrapperStruct0.var_1_10) : (WrapperStruct0.var_1_10))) < WrapperStruct0.var_1_10) ? (WrapperStruct0.var_1_7 ? (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3)) : (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3))) : (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3)))) && (((10 << WrapperStruct0.var_1_12) < (WrapperStruct0.var_1_3 * WrapperStruct0.var_1_14)) ? (WrapperStruct0.var_1_8 == ((signed short int) (WrapperStruct0.var_1_12 + WrapperStruct0.var_1_14))) : 1)) && (WrapperStruct0.var_1_9 == ((unsigned char) 64)) [L95] EXPR ((((WrapperStruct0.var_1_12 <= 16) ? (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3)) : ((((((WrapperStruct0.var_1_10) > (WrapperStruct0.var_1_10)) ? (WrapperStruct0.var_1_10) : (WrapperStruct0.var_1_10))) < WrapperStruct0.var_1_10) ? (WrapperStruct0.var_1_7 ? (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3)) : (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3))) : (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3)))) && (((10 << WrapperStruct0.var_1_12) < (WrapperStruct0.var_1_3 * WrapperStruct0.var_1_14)) ? (WrapperStruct0.var_1_8 == ((signed short int) (WrapperStruct0.var_1_12 + WrapperStruct0.var_1_14))) : 1)) && (WrapperStruct0.var_1_9 == ((unsigned char) 64))) && (WrapperStruct0.var_1_10 == ((double) WrapperStruct0.var_1_11)) [L95] EXPR WrapperStruct0.var_1_10 [L95] EXPR WrapperStruct0.var_1_11 [L95] EXPR ((((WrapperStruct0.var_1_12 <= 16) ? (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3)) : ((((((WrapperStruct0.var_1_10) > (WrapperStruct0.var_1_10)) ? (WrapperStruct0.var_1_10) : (WrapperStruct0.var_1_10))) < WrapperStruct0.var_1_10) ? (WrapperStruct0.var_1_7 ? (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3)) : (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3))) : (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3)))) && (((10 << WrapperStruct0.var_1_12) < (WrapperStruct0.var_1_3 * WrapperStruct0.var_1_14)) ? (WrapperStruct0.var_1_8 == ((signed short int) (WrapperStruct0.var_1_12 + WrapperStruct0.var_1_14))) : 1)) && (WrapperStruct0.var_1_9 == ((unsigned char) 64))) && (WrapperStruct0.var_1_10 == ((double) WrapperStruct0.var_1_11)) [L95] EXPR (((((WrapperStruct0.var_1_12 <= 16) ? (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3)) : ((((((WrapperStruct0.var_1_10) > (WrapperStruct0.var_1_10)) ? (WrapperStruct0.var_1_10) : (WrapperStruct0.var_1_10))) < WrapperStruct0.var_1_10) ? (WrapperStruct0.var_1_7 ? (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3)) : (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3))) : (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3)))) && (((10 << WrapperStruct0.var_1_12) < (WrapperStruct0.var_1_3 * WrapperStruct0.var_1_14)) ? (WrapperStruct0.var_1_8 == ((signed short int) (WrapperStruct0.var_1_12 + WrapperStruct0.var_1_14))) : 1)) && (WrapperStruct0.var_1_9 == ((unsigned char) 64))) && (WrapperStruct0.var_1_10 == ((double) WrapperStruct0.var_1_11))) && ((((last_1_WrapperStruct0_var_1_12 + last_1_WrapperStruct0_var_1_1) < 10) || (last_1_WrapperStruct0_var_1_10 > last_1_WrapperStruct0_var_1_10)) ? (WrapperStruct0.var_1_12 == ((signed short int) ((((((WrapperStruct0.var_1_3 + last_1_WrapperStruct0_var_1_12) - ((((last_1_WrapperStruct0_var_1_14) > (last_1_WrapperStruct0_var_1_12)) ? (last_1_WrapperStruct0_var_1_14) : (last_1_WrapperStruct0_var_1_12))))) > (last_1_WrapperStruct0_var_1_1)) ? (((WrapperStruct0.var_1_3 + last_1_WrapperStruct0_var_1_12) - ((((last_1_WrapperStruct0_var_1_14) > (last_1_WrapperStruct0_var_1_12)) ? (last_1_WrapperStruct0_var_1_14) : (last_1_WrapperStruct0_var_1_12))))) : (last_1_WrapperStruct0_var_1_1))))) : (WrapperStruct0.var_1_12 == ((signed short int) last_1_WrapperStruct0_var_1_12))) [L95] EXPR (((last_1_WrapperStruct0_var_1_12 + last_1_WrapperStruct0_var_1_1) < 10) || (last_1_WrapperStruct0_var_1_10 > last_1_WrapperStruct0_var_1_10)) ? (WrapperStruct0.var_1_12 == ((signed short int) ((((((WrapperStruct0.var_1_3 + last_1_WrapperStruct0_var_1_12) - ((((last_1_WrapperStruct0_var_1_14) > (last_1_WrapperStruct0_var_1_12)) ? (last_1_WrapperStruct0_var_1_14) : (last_1_WrapperStruct0_var_1_12))))) > (last_1_WrapperStruct0_var_1_1)) ? (((WrapperStruct0.var_1_3 + last_1_WrapperStruct0_var_1_12) - ((((last_1_WrapperStruct0_var_1_14) > (last_1_WrapperStruct0_var_1_12)) ? (last_1_WrapperStruct0_var_1_14) : (last_1_WrapperStruct0_var_1_12))))) : (last_1_WrapperStruct0_var_1_1))))) : (WrapperStruct0.var_1_12 == ((signed short int) last_1_WrapperStruct0_var_1_12)) [L95] EXPR WrapperStruct0.var_1_12 [L95] EXPR WrapperStruct0.var_1_3 [L95] EXPR ((((WrapperStruct0.var_1_3 + last_1_WrapperStruct0_var_1_12) - ((((last_1_WrapperStruct0_var_1_14) > (last_1_WrapperStruct0_var_1_12)) ? (last_1_WrapperStruct0_var_1_14) : (last_1_WrapperStruct0_var_1_12))))) > (last_1_WrapperStruct0_var_1_1)) ? (((WrapperStruct0.var_1_3 + last_1_WrapperStruct0_var_1_12) - ((((last_1_WrapperStruct0_var_1_14) > (last_1_WrapperStruct0_var_1_12)) ? (last_1_WrapperStruct0_var_1_14) : (last_1_WrapperStruct0_var_1_12))))) : (last_1_WrapperStruct0_var_1_1) [L95] EXPR (((last_1_WrapperStruct0_var_1_12 + last_1_WrapperStruct0_var_1_1) < 10) || (last_1_WrapperStruct0_var_1_10 > last_1_WrapperStruct0_var_1_10)) ? (WrapperStruct0.var_1_12 == ((signed short int) ((((((WrapperStruct0.var_1_3 + last_1_WrapperStruct0_var_1_12) - ((((last_1_WrapperStruct0_var_1_14) > (last_1_WrapperStruct0_var_1_12)) ? (last_1_WrapperStruct0_var_1_14) : (last_1_WrapperStruct0_var_1_12))))) > (last_1_WrapperStruct0_var_1_1)) ? (((WrapperStruct0.var_1_3 + last_1_WrapperStruct0_var_1_12) - ((((last_1_WrapperStruct0_var_1_14) > (last_1_WrapperStruct0_var_1_12)) ? (last_1_WrapperStruct0_var_1_14) : (last_1_WrapperStruct0_var_1_12))))) : (last_1_WrapperStruct0_var_1_1))))) : (WrapperStruct0.var_1_12 == ((signed short int) last_1_WrapperStruct0_var_1_12)) [L95] EXPR (((((WrapperStruct0.var_1_12 <= 16) ? (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3)) : ((((((WrapperStruct0.var_1_10) > (WrapperStruct0.var_1_10)) ? (WrapperStruct0.var_1_10) : (WrapperStruct0.var_1_10))) < WrapperStruct0.var_1_10) ? (WrapperStruct0.var_1_7 ? (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3)) : (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3))) : (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3)))) && (((10 << WrapperStruct0.var_1_12) < (WrapperStruct0.var_1_3 * WrapperStruct0.var_1_14)) ? (WrapperStruct0.var_1_8 == ((signed short int) (WrapperStruct0.var_1_12 + WrapperStruct0.var_1_14))) : 1)) && (WrapperStruct0.var_1_9 == ((unsigned char) 64))) && (WrapperStruct0.var_1_10 == ((double) WrapperStruct0.var_1_11))) && ((((last_1_WrapperStruct0_var_1_12 + last_1_WrapperStruct0_var_1_1) < 10) || (last_1_WrapperStruct0_var_1_10 > last_1_WrapperStruct0_var_1_10)) ? (WrapperStruct0.var_1_12 == ((signed short int) ((((((WrapperStruct0.var_1_3 + last_1_WrapperStruct0_var_1_12) - ((((last_1_WrapperStruct0_var_1_14) > (last_1_WrapperStruct0_var_1_12)) ? (last_1_WrapperStruct0_var_1_14) : (last_1_WrapperStruct0_var_1_12))))) > (last_1_WrapperStruct0_var_1_1)) ? (((WrapperStruct0.var_1_3 + last_1_WrapperStruct0_var_1_12) - ((((last_1_WrapperStruct0_var_1_14) > (last_1_WrapperStruct0_var_1_12)) ? (last_1_WrapperStruct0_var_1_14) : (last_1_WrapperStruct0_var_1_12))))) : (last_1_WrapperStruct0_var_1_1))))) : (WrapperStruct0.var_1_12 == ((signed short int) last_1_WrapperStruct0_var_1_12))) [L95] EXPR ((((((WrapperStruct0.var_1_12 <= 16) ? (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3)) : ((((((WrapperStruct0.var_1_10) > (WrapperStruct0.var_1_10)) ? (WrapperStruct0.var_1_10) : (WrapperStruct0.var_1_10))) < WrapperStruct0.var_1_10) ? (WrapperStruct0.var_1_7 ? (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3)) : (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3))) : (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3)))) && (((10 << WrapperStruct0.var_1_12) < (WrapperStruct0.var_1_3 * WrapperStruct0.var_1_14)) ? (WrapperStruct0.var_1_8 == ((signed short int) (WrapperStruct0.var_1_12 + WrapperStruct0.var_1_14))) : 1)) && (WrapperStruct0.var_1_9 == ((unsigned char) 64))) && (WrapperStruct0.var_1_10 == ((double) WrapperStruct0.var_1_11))) && ((((last_1_WrapperStruct0_var_1_12 + last_1_WrapperStruct0_var_1_1) < 10) || (last_1_WrapperStruct0_var_1_10 > last_1_WrapperStruct0_var_1_10)) ? (WrapperStruct0.var_1_12 == ((signed short int) ((((((WrapperStruct0.var_1_3 + last_1_WrapperStruct0_var_1_12) - ((((last_1_WrapperStruct0_var_1_14) > (last_1_WrapperStruct0_var_1_12)) ? (last_1_WrapperStruct0_var_1_14) : (last_1_WrapperStruct0_var_1_12))))) > (last_1_WrapperStruct0_var_1_1)) ? (((WrapperStruct0.var_1_3 + last_1_WrapperStruct0_var_1_12) - ((((last_1_WrapperStruct0_var_1_14) > (last_1_WrapperStruct0_var_1_12)) ? (last_1_WrapperStruct0_var_1_14) : (last_1_WrapperStruct0_var_1_12))))) : (last_1_WrapperStruct0_var_1_1))))) : (WrapperStruct0.var_1_12 == ((signed short int) last_1_WrapperStruct0_var_1_12)))) && (WrapperStruct0.var_1_14 == ((signed long int) WrapperStruct0.var_1_12)) [L95-L96] return ((((((WrapperStruct0.var_1_12 <= 16) ? (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3)) : ((((((WrapperStruct0.var_1_10) > (WrapperStruct0.var_1_10)) ? (WrapperStruct0.var_1_10) : (WrapperStruct0.var_1_10))) < WrapperStruct0.var_1_10) ? (WrapperStruct0.var_1_7 ? (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3)) : (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3))) : (WrapperStruct0.var_1_1 == ((unsigned char) WrapperStruct0.var_1_3)))) && (((10 << WrapperStruct0.var_1_12) < (WrapperStruct0.var_1_3 * WrapperStruct0.var_1_14)) ? (WrapperStruct0.var_1_8 == ((signed short int) (WrapperStruct0.var_1_12 + WrapperStruct0.var_1_14))) : 1)) && (WrapperStruct0.var_1_9 == ((unsigned char) 64))) && (WrapperStruct0.var_1_10 == ((double) WrapperStruct0.var_1_11))) && ((((last_1_WrapperStruct0_var_1_12 + last_1_WrapperStruct0_var_1_1) < 10) || (last_1_WrapperStruct0_var_1_10 > last_1_WrapperStruct0_var_1_10)) ? (WrapperStruct0.var_1_12 == ((signed short int) ((((((WrapperStruct0.var_1_3 + last_1_WrapperStruct0_var_1_12) - ((((last_1_WrapperStruct0_var_1_14) > (last_1_WrapperStruct0_var_1_12)) ? (last_1_WrapperStruct0_var_1_14) : (last_1_WrapperStruct0_var_1_12))))) > (last_1_WrapperStruct0_var_1_1)) ? (((WrapperStruct0.var_1_3 + last_1_WrapperStruct0_var_1_12) - ((((last_1_WrapperStruct0_var_1_14) > (last_1_WrapperStruct0_var_1_12)) ? (last_1_WrapperStruct0_var_1_14) : (last_1_WrapperStruct0_var_1_12))))) : (last_1_WrapperStruct0_var_1_1))))) : (WrapperStruct0.var_1_12 == ((signed short int) last_1_WrapperStruct0_var_1_12)))) && (WrapperStruct0.var_1_14 == ((signed long int) WrapperStruct0.var_1_12)) ; [L105] RET, EXPR property() [L105] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_10=46/5, last_1_WrapperStruct0_var_1_12=1, last_1_WrapperStruct0_var_1_14=-16, last_1_WrapperStruct0_var_1_1=10] [L19] reach_error() VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_10=46/5, last_1_WrapperStruct0_var_1_12=1, last_1_WrapperStruct0_var_1_14=-16, last_1_WrapperStruct0_var_1_1=10] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, OverallIterations: 1, TraceHistogramMax: 5, 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=19occurred 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, 1.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 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 05:31:19,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, 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_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-9.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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_14746287-e88d-45f8-a271-e2e9b6074256/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 68b0cda5422c6df9a05dd00f43cb56ae62ac5ef3a6cb82099875e56a3f490744 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:31:22,399 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:31:22,512 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2024-11-09 05:31:22,523 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:31:22,526 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:31:22,568 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:31:22,570 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:31:22,571 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:31:22,572 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:31:22,577 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:31:22,578 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:31:22,578 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:31:22,578 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:31:22,579 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:31:22,579 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:31:22,579 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:31:22,580 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:31:22,580 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:31:22,580 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:31:22,581 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:31:22,581 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:31:22,583 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:31:22,584 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:31:22,584 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:31:22,584 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 05:31:22,585 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-09 05:31:22,585 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:31:22,585 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-09 05:31:22,585 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:31:22,586 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:31:22,586 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:31:22,586 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:31:22,587 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 05:31:22,587 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:31:22,587 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:31:22,587 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:31:22,589 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:31:22,589 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:31:22,590 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:31:22,590 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-09 05:31:22,590 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-09 05:31:22,592 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:31:22,593 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:31:22,593 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_14746287-e88d-45f8-a271-e2e9b6074256/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68b0cda5422c6df9a05dd00f43cb56ae62ac5ef3a6cb82099875e56a3f490744 [2024-11-09 05:31:23,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:31:23,094 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:31:23,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:31:23,099 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:31:23,103 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:31:23,105 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-9.i Unable to find full path for "g++" [2024-11-09 05:31:25,660 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:31:25,946 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:31:25,948 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-9.i [2024-11-09 05:31:25,961 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/data/7f836c007/d1d262aee0064048804fd6993d3ba8c9/FLAG1760af15d [2024-11-09 05:31:26,269 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/data/7f836c007/d1d262aee0064048804fd6993d3ba8c9 [2024-11-09 05:31:26,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:31:26,276 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:31:26,279 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:31:26,281 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:31:26,289 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:31:26,290 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:31:26" (1/1) ... [2024-11-09 05:31:26,292 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@120acfcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:31:26, skipping insertion in model container [2024-11-09 05:31:26,292 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:31:26" (1/1) ... [2024-11-09 05:31:26,341 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:31:26,643 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_14746287-e88d-45f8-a271-e2e9b6074256/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-9.i[915,928] [2024-11-09 05:31:26,709 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:31:26,727 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:31:26,743 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_14746287-e88d-45f8-a271-e2e9b6074256/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-9.i[915,928] [2024-11-09 05:31:26,783 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:31:26,829 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:31:26,831 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:31:26 WrapperNode [2024-11-09 05:31:26,832 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:31:26,834 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:31:26,834 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:31:26,835 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:31:26,845 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:31:26" (1/1) ... [2024-11-09 05:31:26,875 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:31:26" (1/1) ... [2024-11-09 05:31:26,940 INFO L138 Inliner]: procedures = 36, calls = 103, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 327 [2024-11-09 05:31:26,940 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:31:26,941 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:31:26,941 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:31:26,941 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:31:26,966 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:31:26" (1/1) ... [2024-11-09 05:31:26,966 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:31:26" (1/1) ... [2024-11-09 05:31:26,982 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:31:26" (1/1) ... [2024-11-09 05:31:26,983 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:31:26" (1/1) ... [2024-11-09 05:31:27,018 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:31:26" (1/1) ... [2024-11-09 05:31:27,023 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:31:26" (1/1) ... [2024-11-09 05:31:27,027 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:31:26" (1/1) ... [2024-11-09 05:31:27,030 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:31:26" (1/1) ... [2024-11-09 05:31:27,035 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:31:27,037 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:31:27,037 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:31:27,037 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:31:27,038 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:31:26" (1/1) ... [2024-11-09 05:31:27,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:31:27,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:31:27,109 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:31:27,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:31:27,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:31:27,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2024-11-09 05:31:27,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2024-11-09 05:31:27,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2024-11-09 05:31:27,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2024-11-09 05:31:27,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-09 05:31:27,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2024-11-09 05:31:27,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2024-11-09 05:31:27,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2024-11-09 05:31:27,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2024-11-09 05:31:27,196 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 05:31:27,196 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 05:31:27,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:31:27,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:31:27,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2024-11-09 05:31:27,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2024-11-09 05:31:27,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2024-11-09 05:31:27,383 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:31:27,386 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:31:28,302 INFO L? ?]: Removed 79 outVars from TransFormulas that were not future-live. [2024-11-09 05:31:28,303 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:31:28,324 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:31:28,325 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 05:31:28,325 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:31:28 BoogieIcfgContainer [2024-11-09 05:31:28,326 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:31:28,328 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:31:28,328 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:31:28,333 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:31:28,333 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:31:26" (1/3) ... [2024-11-09 05:31:28,334 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d02e517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:31:28, skipping insertion in model container [2024-11-09 05:31:28,335 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:31:26" (2/3) ... [2024-11-09 05:31:28,335 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d02e517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:31:28, skipping insertion in model container [2024-11-09 05:31:28,336 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:31:28" (3/3) ... [2024-11-09 05:31:28,337 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-9.i [2024-11-09 05:31:28,362 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:31:28,362 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:31:28,451 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:31:28,458 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;@5e5aa1c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:31:28,458 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:31:28,466 INFO L276 IsEmpty]: Start isEmpty. Operand has 70 states, 62 states have (on average 1.435483870967742) internal successors, (89), 63 states have internal predecessors, (89), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 05:31:28,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-09 05:31:28,478 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:31:28,479 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:31:28,479 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:31:28,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:31:28,485 INFO L85 PathProgramCache]: Analyzing trace with hash 800847055, now seen corresponding path program 1 times [2024-11-09 05:31:28,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:31:28,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1711689057] [2024-11-09 05:31:28,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:31:28,501 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 05:31:28,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:31:28,503 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:31:28,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:31:28,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:31:28,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-09 05:31:28,835 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:31:28,901 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 05:31:28,901 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:31:28,902 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:31:28,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1711689057] [2024-11-09 05:31:28,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1711689057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:31:28,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:31:28,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:31:28,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416037972] [2024-11-09 05:31:28,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:31:28,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 05:31:28,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:31:28,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 05:31:28,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 05:31:28,949 INFO L87 Difference]: Start difference. First operand has 70 states, 62 states have (on average 1.435483870967742) internal successors, (89), 63 states have internal predecessors, (89), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:31:28,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:31:28,994 INFO L93 Difference]: Finished difference Result 133 states and 197 transitions. [2024-11-09 05:31:28,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 05:31:28,997 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 60 [2024-11-09 05:31:28,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:31:29,009 INFO L225 Difference]: With dead ends: 133 [2024-11-09 05:31:29,010 INFO L226 Difference]: Without dead ends: 66 [2024-11-09 05:31:29,016 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 59 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 05:31:29,022 INFO L432 NwaCegarLoop]: 92 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, 92 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 05:31:29,024 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:31:29,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-09 05:31:29,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-11-09 05:31:29,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 59 states have (on average 1.3898305084745763) internal successors, (82), 59 states have internal predecessors, (82), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 05:31:29,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 92 transitions. [2024-11-09 05:31:29,091 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 92 transitions. Word has length 60 [2024-11-09 05:31:29,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:31:29,092 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 92 transitions. [2024-11-09 05:31:29,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:31:29,093 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 92 transitions. [2024-11-09 05:31:29,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-09 05:31:29,097 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:31:29,097 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:31:29,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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)] Forceful destruction successful, exit code 0 [2024-11-09 05:31:29,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:31:29,302 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:31:29,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:31:29,304 INFO L85 PathProgramCache]: Analyzing trace with hash 533340181, now seen corresponding path program 1 times [2024-11-09 05:31:29,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:31:29,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1992488673] [2024-11-09 05:31:29,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:31:29,306 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 05:31:29,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:31:29,308 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:31:29,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:31:29,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:31:29,591 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:31:29,595 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:31:29,666 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-09 05:31:29,666 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:31:29,667 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:31:29,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1992488673] [2024-11-09 05:31:29,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1992488673] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:31:29,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:31:29,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:31:29,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79969372] [2024-11-09 05:31:29,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:31:29,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:31:29,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:31:29,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:31:29,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:31:29,673 INFO L87 Difference]: Start difference. First operand 66 states and 92 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:31:29,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:31:29,736 INFO L93 Difference]: Finished difference Result 132 states and 185 transitions. [2024-11-09 05:31:29,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:31:29,737 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 60 [2024-11-09 05:31:29,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:31:29,739 INFO L225 Difference]: With dead ends: 132 [2024-11-09 05:31:29,739 INFO L226 Difference]: Without dead ends: 69 [2024-11-09 05:31:29,740 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 57 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 05:31:29,742 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 1 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:31:29,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 256 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:31:29,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-09 05:31:29,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2024-11-09 05:31:29,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 61 states have (on average 1.3770491803278688) internal successors, (84), 61 states have internal predecessors, (84), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 05:31:29,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2024-11-09 05:31:29,754 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 60 [2024-11-09 05:31:29,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:31:29,756 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2024-11-09 05:31:29,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:31:29,757 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2024-11-09 05:31:29,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-09 05:31:29,759 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:31:29,759 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:31:29,770 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:31:29,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:31:29,961 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:31:29,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:31:29,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1234404759, now seen corresponding path program 1 times [2024-11-09 05:31:29,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:31:29,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2061323390] [2024-11-09 05:31:29,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:31:29,965 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 05:31:29,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:31:29,968 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:31:29,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:31:30,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:31:30,257 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:31:30,262 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:31:30,304 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-09 05:31:30,305 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:31:30,305 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:31:30,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2061323390] [2024-11-09 05:31:30,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2061323390] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:31:30,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:31:30,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:31:30,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658962986] [2024-11-09 05:31:30,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:31:30,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:31:30,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:31:30,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:31:30,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:31:30,310 INFO L87 Difference]: Start difference. First operand 68 states and 94 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:31:30,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:31:30,389 INFO L93 Difference]: Finished difference Result 136 states and 189 transitions. [2024-11-09 05:31:30,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:31:30,391 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 60 [2024-11-09 05:31:30,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:31:30,393 INFO L225 Difference]: With dead ends: 136 [2024-11-09 05:31:30,393 INFO L226 Difference]: Without dead ends: 71 [2024-11-09 05:31:30,394 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 56 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 05:31:30,395 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 1 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:31:30,396 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 333 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:31:30,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-09 05:31:30,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2024-11-09 05:31:30,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 63 states have (on average 1.3650793650793651) internal successors, (86), 63 states have internal predecessors, (86), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 05:31:30,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 96 transitions. [2024-11-09 05:31:30,406 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 96 transitions. Word has length 60 [2024-11-09 05:31:30,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:31:30,407 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 96 transitions. [2024-11-09 05:31:30,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:31:30,408 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 96 transitions. [2024-11-09 05:31:30,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-09 05:31:30,410 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:31:30,410 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:31:30,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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)] Forceful destruction successful, exit code 0 [2024-11-09 05:31:30,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:31:30,613 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:31:30,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:31:30,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1914463129, now seen corresponding path program 1 times [2024-11-09 05:31:30,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:31:30,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878011503] [2024-11-09 05:31:30,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:31:30,616 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 05:31:30,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:31:30,620 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:31:30,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:31:30,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:31:30,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 05:31:30,926 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:31:31,008 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-09 05:31:31,009 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:31:31,011 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:31:31,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878011503] [2024-11-09 05:31:31,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1878011503] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:31:31,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:31:31,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 05:31:31,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119357147] [2024-11-09 05:31:31,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:31:31,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 05:31:31,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:31:31,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 05:31:31,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:31:31,015 INFO L87 Difference]: Start difference. First operand 70 states and 96 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:31:31,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:31:31,150 INFO L93 Difference]: Finished difference Result 142 states and 196 transitions. [2024-11-09 05:31:31,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:31:31,155 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 60 [2024-11-09 05:31:31,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:31:31,159 INFO L225 Difference]: With dead ends: 142 [2024-11-09 05:31:31,161 INFO L226 Difference]: Without dead ends: 75 [2024-11-09 05:31:31,162 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:31:31,163 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 1 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:31:31,166 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 479 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:31:31,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-09 05:31:31,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2024-11-09 05:31:31,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 67 states have (on average 1.3432835820895523) internal successors, (90), 67 states have internal predecessors, (90), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 05:31:31,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 100 transitions. [2024-11-09 05:31:31,176 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 100 transitions. Word has length 60 [2024-11-09 05:31:31,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:31:31,177 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 100 transitions. [2024-11-09 05:31:31,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:31:31,178 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 100 transitions. [2024-11-09 05:31:31,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-09 05:31:31,179 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:31:31,180 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:31:31,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:31:31,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:31:31,381 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:31:31,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:31:31,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1916310171, now seen corresponding path program 1 times [2024-11-09 05:31:31,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:31:31,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1700612875] [2024-11-09 05:31:31,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:31:31,383 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 05:31:31,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:31:31,387 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:31:31,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:31:31,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:31:31,715 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 05:31:31,723 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:31:31,771 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 05:31:31,782 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 05:31:31,940 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 24 [2024-11-09 05:31:34,240 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:31:34,241 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 05:31:34,274 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:31:34,275 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 05:31:34,311 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:31:34,312 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 52 treesize of output 60 [2024-11-09 05:31:34,443 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:31:34,443 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 84 treesize of output 73 [2024-11-09 05:31:36,582 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:31:36,583 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 77 treesize of output 94 [2024-11-09 05:31:36,834 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:31:36,834 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 117 treesize of output 51 [2024-11-09 05:31:36,911 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 05:31:36,912 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:31:36,912 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:31:36,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1700612875] [2024-11-09 05:31:36,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1700612875] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:31:36,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:31:36,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-09 05:31:36,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252977676] [2024-11-09 05:31:36,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:31:36,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 05:31:36,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:31:36,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 05:31:36,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=45, Unknown=2, NotChecked=0, Total=72 [2024-11-09 05:31:36,915 INFO L87 Difference]: Start difference. First operand 74 states and 100 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-09 05:31:39,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:31:41,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:31:41,646 INFO L93 Difference]: Finished difference Result 216 states and 294 transitions. [2024-11-09 05:31:41,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 05:31:41,649 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 60 [2024-11-09 05:31:41,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:31:41,650 INFO L225 Difference]: With dead ends: 216 [2024-11-09 05:31:41,651 INFO L226 Difference]: Without dead ends: 145 [2024-11-09 05:31:41,651 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=41, Invalid=67, Unknown=2, NotChecked=0, Total=110 [2024-11-09 05:31:41,652 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 304 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 46 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:31:41,657 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 287 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 268 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2024-11-09 05:31:41,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-09 05:31:41,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 84. [2024-11-09 05:31:41,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 77 states have (on average 1.3636363636363635) internal successors, (105), 77 states have internal predecessors, (105), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 05:31:41,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 115 transitions. [2024-11-09 05:31:41,685 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 115 transitions. Word has length 60 [2024-11-09 05:31:41,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:31:41,687 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 115 transitions. [2024-11-09 05:31:41,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-09 05:31:41,689 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 115 transitions. [2024-11-09 05:31:41,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-09 05:31:41,691 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:31:41,691 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:31:41,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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)] Forceful destruction successful, exit code 0 [2024-11-09 05:31:41,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:31:41,896 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:31:41,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:31:41,897 INFO L85 PathProgramCache]: Analyzing trace with hash 227366429, now seen corresponding path program 1 times [2024-11-09 05:31:41,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:31:41,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1792632401] [2024-11-09 05:31:41,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:31:41,899 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 05:31:41,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:31:41,902 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:31:41,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:31:42,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:31:42,210 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 05:31:42,217 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:31:42,302 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 29 treesize of output 17 [2024-11-09 05:31:42,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-09 05:31:42,362 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 05:31:42,545 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 14 [2024-11-09 05:31:42,673 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 27 treesize of output 26 [2024-11-09 05:31:42,778 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 0 case distinctions, treesize of input 44 treesize of output 40 [2024-11-09 05:31:43,082 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:31:43,083 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 106 treesize of output 74 [2024-11-09 05:31:45,286 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:31:45,287 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 88 [2024-11-09 05:31:45,627 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:31:45,627 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 141 treesize of output 63 [2024-11-09 05:31:45,747 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 05:31:45,747 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:31:45,748 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:31:45,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1792632401] [2024-11-09 05:31:45,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1792632401] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:31:45,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:31:45,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-09 05:31:45,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496170194] [2024-11-09 05:31:45,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:31:45,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 05:31:45,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:31:45,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 05:31:45,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=117, Unknown=1, NotChecked=0, Total=156 [2024-11-09 05:31:45,751 INFO L87 Difference]: Start difference. First operand 84 states and 115 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 05:31:48,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:31:55,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:31:58,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:31:58,446 INFO L93 Difference]: Finished difference Result 343 states and 470 transitions. [2024-11-09 05:31:58,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 05:31:58,447 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 60 [2024-11-09 05:31:58,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:31:58,449 INFO L225 Difference]: With dead ends: 343 [2024-11-09 05:31:58,449 INFO L226 Difference]: Without dead ends: 262 [2024-11-09 05:31:58,450 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=117, Invalid=260, Unknown=3, NotChecked=0, Total=380 [2024-11-09 05:31:58,451 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 384 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 74 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2024-11-09 05:31:58,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 539 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 591 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2024-11-09 05:31:58,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2024-11-09 05:31:58,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 153. [2024-11-09 05:31:58,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 140 states have (on average 1.3571428571428572) internal successors, (190), 140 states have internal predecessors, (190), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-09 05:31:58,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 210 transitions. [2024-11-09 05:31:58,484 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 210 transitions. Word has length 60 [2024-11-09 05:31:58,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:31:58,485 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 210 transitions. [2024-11-09 05:31:58,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 05:31:58,485 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 210 transitions. [2024-11-09 05:31:58,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-09 05:31:58,487 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:31:58,487 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:31:58,503 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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)] Ended with exit code 0 [2024-11-09 05:31:58,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:31:58,692 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:31:58,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:31:58,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1239458734, now seen corresponding path program 1 times [2024-11-09 05:31:58,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:31:58,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [532673418] [2024-11-09 05:31:58,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:31:58,694 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 05:31:58,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:31:58,698 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:31:58,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:31:58,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:31:59,007 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 05:31:59,013 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:31:59,122 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 05:31:59,817 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:31:59,817 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 142 treesize of output 63 [2024-11-09 05:31:59,933 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:31:59,934 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 142 treesize of output 63 [2024-11-09 05:32:00,036 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:32:00,036 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 154 treesize of output 96 [2024-11-09 05:32:00,223 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:32:00,224 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 238 treesize of output 140 [2024-11-09 05:32:00,547 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:32:00,548 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 246 treesize of output 164 [2024-11-09 05:32:01,721 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:32:01,722 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 402 treesize of output 158 [2024-11-09 05:32:01,860 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 05:32:01,864 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:32:02,281 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:32:02,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [532673418] [2024-11-09 05:32:02,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [532673418] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:32:02,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [407037468] [2024-11-09 05:32:02,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:32:02,286 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:32:02,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:32:02,290 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:32:02,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2024-11-09 05:32:03,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:32:03,600 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-09 05:32:03,605 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:32:03,885 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 16 treesize of output 17 [2024-11-09 05:32:05,201 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:32:05,201 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 120 treesize of output 63 [2024-11-09 05:32:05,379 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:32:05,379 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 120 treesize of output 63 [2024-11-09 05:32:05,585 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:32:05,585 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 130 treesize of output 90 [2024-11-09 05:32:05,839 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:32:05,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 28 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 103 treesize of output 98 [2024-11-09 05:32:06,210 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:32:06,211 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 115 treesize of output 126 [2024-11-09 05:32:07,629 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:32:07,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 232 treesize of output 96 [2024-11-09 05:32:07,660 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 05:32:07,660 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:32:07,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [407037468] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:32:07,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215234663] [2024-11-09 05:32:07,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:32:07,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:32:07,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:32:07,906 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:32:07,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 05:32:09,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:32:09,429 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 05:32:09,433 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:32:18,275 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:32:18,275 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 132 treesize of output 59 [2024-11-09 05:32:18,292 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:32:18,292 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 132 treesize of output 59 [2024-11-09 05:32:18,310 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:32:18,310 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 144 treesize of output 92 [2024-11-09 05:32:22,500 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:32:22,501 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 228 treesize of output 136 [2024-11-09 05:32:22,785 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:32:22,785 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 246 treesize of output 164 [2024-11-09 05:32:23,652 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:32:23,653 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 402 treesize of output 158 [2024-11-09 05:32:23,704 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 05:32:23,704 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:32:23,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215234663] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:32:23,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:32:23,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2024-11-09 05:32:23,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796871947] [2024-11-09 05:32:23,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:32:23,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 05:32:23,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:32:23,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 05:32:23,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=573, Unknown=6, NotChecked=0, Total=702 [2024-11-09 05:32:23,964 INFO L87 Difference]: Start difference. First operand 153 states and 210 transitions. Second operand has 25 states, 25 states have (on average 3.64) internal successors, (91), 24 states have internal predecessors, (91), 5 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2024-11-09 05:32:34,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:32:34,210 INFO L93 Difference]: Finished difference Result 555 states and 756 transitions. [2024-11-09 05:32:34,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 05:32:34,212 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.64) internal successors, (91), 24 states have internal predecessors, (91), 5 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 62 [2024-11-09 05:32:34,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:32:34,215 INFO L225 Difference]: With dead ends: 555 [2024-11-09 05:32:34,215 INFO L226 Difference]: Without dead ends: 405 [2024-11-09 05:32:34,217 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 229 SyntacticMatches, 7 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 17.5s TimeCoverageRelationStatistics Valid=249, Invalid=1005, Unknown=6, NotChecked=0, Total=1260 [2024-11-09 05:32:34,218 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 458 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2024-11-09 05:32:34,218 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 535 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2024-11-09 05:32:34,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2024-11-09 05:32:34,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 397. [2024-11-09 05:32:34,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 362 states have (on average 1.339779005524862) internal successors, (485), 366 states have internal predecessors, (485), 28 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (28), 24 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-09 05:32:34,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 541 transitions. [2024-11-09 05:32:34,308 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 541 transitions. Word has length 62 [2024-11-09 05:32:34,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:32:34,309 INFO L471 AbstractCegarLoop]: Abstraction has 397 states and 541 transitions. [2024-11-09 05:32:34,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.64) internal successors, (91), 24 states have internal predecessors, (91), 5 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2024-11-09 05:32:34,310 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 541 transitions. [2024-11-09 05:32:34,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-09 05:32:34,312 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:32:34,313 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:32:34,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2024-11-09 05:32:34,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 05:32:34,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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)] Forceful destruction successful, exit code 0 [2024-11-09 05:32:34,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:32:34,918 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:32:34,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:32:34,919 INFO L85 PathProgramCache]: Analyzing trace with hash -559400364, now seen corresponding path program 1 times [2024-11-09 05:32:34,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:32:34,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [698692051] [2024-11-09 05:32:34,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:32:34,920 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 05:32:34,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:32:34,921 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:32:34,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:32:35,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:32:35,200 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 05:32:35,203 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:32:35,210 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 26 treesize of output 31 [2024-11-09 05:32:35,260 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:32:35,260 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 50 treesize of output 58 [2024-11-09 05:32:35,535 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:32:35,536 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 75 treesize of output 35 [2024-11-09 05:32:35,580 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-09 05:32:35,581 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:32:35,581 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:32:35,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [698692051] [2024-11-09 05:32:35,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [698692051] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:32:35,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:32:35,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 05:32:35,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343252099] [2024-11-09 05:32:35,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:32:35,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:32:35,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:32:35,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:32:35,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:32:35,584 INFO L87 Difference]: Start difference. First operand 397 states and 541 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:32:36,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:32:36,614 INFO L93 Difference]: Finished difference Result 843 states and 1147 transitions. [2024-11-09 05:32:36,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:32:36,615 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 62 [2024-11-09 05:32:36,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:32:36,620 INFO L225 Difference]: With dead ends: 843 [2024-11-09 05:32:36,621 INFO L226 Difference]: Without dead ends: 449 [2024-11-09 05:32:36,622 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:32:36,623 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 108 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 05:32:36,623 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 286 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 05:32:36,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2024-11-09 05:32:36,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 424. [2024-11-09 05:32:36,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 381 states have (on average 1.3175853018372703) internal successors, (502), 387 states have internal predecessors, (502), 34 states have call successors, (34), 8 states have call predecessors, (34), 8 states have return successors, (34), 28 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-09 05:32:36,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 570 transitions. [2024-11-09 05:32:36,716 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 570 transitions. Word has length 62 [2024-11-09 05:32:36,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:32:36,717 INFO L471 AbstractCegarLoop]: Abstraction has 424 states and 570 transitions. [2024-11-09 05:32:36,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:32:36,717 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 570 transitions. [2024-11-09 05:32:36,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-09 05:32:36,719 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:32:36,720 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:32:36,730 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:32:36,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:32:36,921 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:32:36,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:32:36,921 INFO L85 PathProgramCache]: Analyzing trace with hash 141664214, now seen corresponding path program 1 times [2024-11-09 05:32:36,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:32:36,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1981249945] [2024-11-09 05:32:36,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:32:36,922 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 05:32:36,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:32:36,926 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:32:36,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:32:37,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:32:37,244 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 05:32:37,249 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:32:37,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-09 05:32:37,368 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 16 treesize of output 12 [2024-11-09 05:32:37,385 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 32 treesize of output 25 [2024-11-09 05:32:37,431 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:32:37,432 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 05:32:37,518 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:32:37,519 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 86 treesize of output 48 [2024-11-09 05:32:37,556 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:32:37,557 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 64 treesize of output 66 [2024-11-09 05:32:37,776 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:32:37,776 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 128 treesize of output 58 [2024-11-09 05:32:37,848 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-09 05:32:37,848 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:32:37,848 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:32:37,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1981249945] [2024-11-09 05:32:37,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1981249945] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:32:37,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:32:37,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-09 05:32:37,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952297546] [2024-11-09 05:32:37,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:32:37,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 05:32:37,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:32:37,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 05:32:37,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-09 05:32:37,858 INFO L87 Difference]: Start difference. First operand 424 states and 570 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 states have internal predecessors, (40), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:32:40,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:32:40,549 INFO L93 Difference]: Finished difference Result 1147 states and 1546 transitions. [2024-11-09 05:32:40,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 05:32:40,550 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 states have internal predecessors, (40), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 62 [2024-11-09 05:32:40,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:32:40,555 INFO L225 Difference]: With dead ends: 1147 [2024-11-09 05:32:40,555 INFO L226 Difference]: Without dead ends: 753 [2024-11-09 05:32:40,556 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=132, Invalid=374, Unknown=0, NotChecked=0, Total=506 [2024-11-09 05:32:40,557 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 401 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:32:40,558 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 587 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-09 05:32:40,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2024-11-09 05:32:40,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 573. [2024-11-09 05:32:40,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 518 states have (on average 1.305019305019305) internal successors, (676), 525 states have internal predecessors, (676), 44 states have call successors, (44), 10 states have call predecessors, (44), 10 states have return successors, (44), 37 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-09 05:32:40,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 764 transitions. [2024-11-09 05:32:40,687 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 764 transitions. Word has length 62 [2024-11-09 05:32:40,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:32:40,688 INFO L471 AbstractCegarLoop]: Abstraction has 573 states and 764 transitions. [2024-11-09 05:32:40,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 states have internal predecessors, (40), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:32:40,689 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 764 transitions. [2024-11-09 05:32:40,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-09 05:32:40,690 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:32:40,692 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:32:40,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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)] Ended with exit code 0 [2024-11-09 05:32:40,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:32:40,893 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:32:40,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:32:40,894 INFO L85 PathProgramCache]: Analyzing trace with hash -816756908, now seen corresponding path program 1 times [2024-11-09 05:32:40,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:32:40,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [627437126] [2024-11-09 05:32:40,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:32:40,894 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 05:32:40,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:32:40,896 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:32:40,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 (13)] Waiting until timeout for monitored process [2024-11-09 05:32:41,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:32:41,158 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-09 05:32:41,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:32:41,276 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:32:41,276 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 05:32:41,480 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:32:41,480 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 05:32:41,658 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:32:41,659 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 51 [2024-11-09 05:32:44,056 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:32:44,057 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 56 [2024-11-09 05:32:48,133 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:32:48,134 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 64 treesize of output 66 [2024-11-09 05:32:48,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 28 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 89 [2024-11-09 05:32:48,507 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:32:48,508 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 110 treesize of output 118 [2024-11-09 05:32:49,018 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:32:49,019 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 160 treesize of output 72 [2024-11-09 05:32:49,112 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 05:32:49,113 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:32:49,113 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:32:49,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [627437126] [2024-11-09 05:32:49,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [627437126] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:32:49,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:32:49,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-09 05:32:49,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956010502] [2024-11-09 05:32:49,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:32:49,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 05:32:49,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:32:49,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 05:32:49,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=95, Unknown=3, NotChecked=0, Total=132 [2024-11-09 05:32:49,115 INFO L87 Difference]: Start difference. First operand 573 states and 764 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 05:32:52,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:32:52,104 INFO L93 Difference]: Finished difference Result 1126 states and 1499 transitions. [2024-11-09 05:32:52,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 05:32:52,106 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 62 [2024-11-09 05:32:52,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:32:52,110 INFO L225 Difference]: With dead ends: 1126 [2024-11-09 05:32:52,111 INFO L226 Difference]: Without dead ends: 583 [2024-11-09 05:32:52,112 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=92, Invalid=211, Unknown=3, NotChecked=0, Total=306 [2024-11-09 05:32:52,113 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 170 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:32:52,114 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 602 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-09 05:32:52,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2024-11-09 05:32:52,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 561. [2024-11-09 05:32:52,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 506 states have (on average 1.2924901185770752) internal successors, (654), 513 states have internal predecessors, (654), 44 states have call successors, (44), 10 states have call predecessors, (44), 10 states have return successors, (44), 37 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-09 05:32:52,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 742 transitions. [2024-11-09 05:32:52,224 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 742 transitions. Word has length 62 [2024-11-09 05:32:52,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:32:52,227 INFO L471 AbstractCegarLoop]: Abstraction has 561 states and 742 transitions. [2024-11-09 05:32:52,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 05:32:52,227 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 742 transitions. [2024-11-09 05:32:52,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-09 05:32:52,229 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:32:52,229 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:32:52,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 (13)] Forceful destruction successful, exit code 0 [2024-11-09 05:32:52,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:32:52,430 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:32:52,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:32:52,431 INFO L85 PathProgramCache]: Analyzing trace with hash 564366040, now seen corresponding path program 1 times [2024-11-09 05:32:52,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:32:52,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1956176850] [2024-11-09 05:32:52,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:32:52,432 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 05:32:52,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:32:52,434 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:32:52,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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)] Waiting until timeout for monitored process [2024-11-09 05:32:52,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:32:52,758 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 05:32:52,764 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:32:52,846 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 40 treesize of output 18 [2024-11-09 05:32:53,026 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 40 treesize of output 18 [2024-11-09 05:32:53,179 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 46 treesize of output 28 [2024-11-09 05:32:55,376 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:32:55,377 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 42 treesize of output 29 [2024-11-09 05:32:59,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 40 [2024-11-09 05:32:59,651 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:32:59,651 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 101 treesize of output 84 [2024-11-09 05:33:01,832 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:33:01,832 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 109 treesize of output 99 [2024-11-09 05:33:02,193 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:33:02,194 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 128 treesize of output 58 [2024-11-09 05:33:02,282 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 05:33:02,283 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:33:02,283 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:33:02,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1956176850] [2024-11-09 05:33:02,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1956176850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:33:02,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:33:02,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 05:33:02,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707186369] [2024-11-09 05:33:02,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:33:02,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 05:33:02,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:33:02,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 05:33:02,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=71, Unknown=4, NotChecked=0, Total=110 [2024-11-09 05:33:02,286 INFO L87 Difference]: Start difference. First operand 561 states and 742 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 05:33:05,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:33:12,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:33:12,833 INFO L93 Difference]: Finished difference Result 1144 states and 1513 transitions. [2024-11-09 05:33:12,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 05:33:12,834 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 62 [2024-11-09 05:33:12,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:33:12,837 INFO L225 Difference]: With dead ends: 1144 [2024-11-09 05:33:12,838 INFO L226 Difference]: Without dead ends: 613 [2024-11-09 05:33:12,839 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=82, Invalid=152, Unknown=6, NotChecked=0, Total=240 [2024-11-09 05:33:12,840 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 121 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2024-11-09 05:33:12,840 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 481 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 598 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2024-11-09 05:33:12,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2024-11-09 05:33:12,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 578. [2024-11-09 05:33:12,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 523 states have (on average 1.2944550669216062) internal successors, (677), 530 states have internal predecessors, (677), 44 states have call successors, (44), 10 states have call predecessors, (44), 10 states have return successors, (44), 37 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-09 05:33:12,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 765 transitions. [2024-11-09 05:33:12,945 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 765 transitions. Word has length 62 [2024-11-09 05:33:12,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:33:12,945 INFO L471 AbstractCegarLoop]: Abstraction has 578 states and 765 transitions. [2024-11-09 05:33:12,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 05:33:12,946 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 765 transitions. [2024-11-09 05:33:12,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-09 05:33:12,948 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:33:12,948 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:33:12,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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)] Ended with exit code 0 [2024-11-09 05:33:13,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:33:13,153 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:33:13,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:33:13,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1827874158, now seen corresponding path program 1 times [2024-11-09 05:33:13,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:33:13,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1345447576] [2024-11-09 05:33:13,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:33:13,155 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 05:33:13,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:33:13,158 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:33:13,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:33:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:33:13,465 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 05:33:13,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:33:13,538 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 05:33:14,055 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:33:14,055 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 142 treesize of output 63 [2024-11-09 05:33:14,138 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:33:14,139 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 142 treesize of output 63 [2024-11-09 05:33:14,217 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:33:14,217 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 211 treesize of output 104 [2024-11-09 05:33:14,362 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:33:14,362 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 174 treesize of output 137 [2024-11-09 05:33:14,991 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:33:14,991 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 375 treesize of output 149 [2024-11-09 05:33:15,084 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 05:33:15,084 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:33:15,734 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:33:15,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1345447576] [2024-11-09 05:33:15,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1345447576] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:33:15,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1951448718] [2024-11-09 05:33:15,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:33:15,735 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:33:15,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:33:15,736 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:33:15,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2024-11-09 05:33:16,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:33:16,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 05:33:16,942 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:33:17,144 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 16 treesize of output 17 [2024-11-09 05:33:18,008 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:33:18,009 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 120 treesize of output 63 [2024-11-09 05:33:18,136 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:33:18,137 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 120 treesize of output 63 [2024-11-09 05:33:18,195 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:33:18,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 170 treesize of output 108 [2024-11-09 05:33:18,415 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:33:18,416 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 191 treesize of output 133 [2024-11-09 05:33:19,421 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:33:19,422 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 344 treesize of output 148 [2024-11-09 05:33:19,465 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 05:33:19,466 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:33:19,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1951448718] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:33:19,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817568150] [2024-11-09 05:33:19,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:33:19,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:33:19,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:33:19,722 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:33:19,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 05:33:20,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:33:20,545 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 05:33:20,549 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:33:20,553 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 05:33:22,573 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_skolemized_q#valueAsBitvector_73| (_ BitVec 64))) (let ((.cse0 (select |c_#memory_int| |c_~#WrapperStruct0~0.base|))) (and (= ((_ extract 31 0) |v_skolemized_q#valueAsBitvector_73|) (select .cse0 (bvadd |c_~#WrapperStruct0~0.offset| (_ bv14 32)))) (= (select .cse0 (bvadd |c_~#WrapperStruct0~0.offset| (_ bv18 32))) ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_73|))))) is different from true [2024-11-09 05:33:29,998 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:33:29,999 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 96 treesize of output 47 [2024-11-09 05:33:30,029 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:33:30,029 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 96 treesize of output 47 [2024-11-09 05:33:32,326 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:33:32,327 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 165 treesize of output 88 [2024-11-09 05:33:32,933 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:33:32,934 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 143 treesize of output 118 [2024-11-09 05:33:34,176 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:33:34,177 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 344 treesize of output 130 [2024-11-09 05:33:34,225 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 05:33:34,225 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:33:34,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817568150] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:33:34,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 05:33:34,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10, 10] total 24 [2024-11-09 05:33:34,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574662519] [2024-11-09 05:33:34,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:33:34,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 05:33:34,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:33:34,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 05:33:34,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=496, Unknown=4, NotChecked=46, Total=650 [2024-11-09 05:33:34,228 INFO L87 Difference]: Start difference. First operand 578 states and 765 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 05:33:40,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:33:40,528 INFO L93 Difference]: Finished difference Result 1143 states and 1505 transitions. [2024-11-09 05:33:40,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 05:33:40,532 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 62 [2024-11-09 05:33:40,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:33:40,535 INFO L225 Difference]: With dead ends: 1143 [2024-11-09 05:33:40,536 INFO L226 Difference]: Without dead ends: 595 [2024-11-09 05:33:40,537 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 206 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=125, Invalid=631, Unknown=4, NotChecked=52, Total=812 [2024-11-09 05:33:40,538 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 134 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 192 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-11-09 05:33:40,539 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 330 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 349 Invalid, 0 Unknown, 192 Unchecked, 5.6s Time] [2024-11-09 05:33:40,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2024-11-09 05:33:40,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 475. [2024-11-09 05:33:40,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 435 states have (on average 1.3057471264367817) internal successors, (568), 438 states have internal predecessors, (568), 30 states have call successors, (30), 9 states have call predecessors, (30), 9 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-09 05:33:40,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 628 transitions. [2024-11-09 05:33:40,645 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 628 transitions. Word has length 62 [2024-11-09 05:33:40,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:33:40,646 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 628 transitions. [2024-11-09 05:33:40,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 05:33:40,646 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 628 transitions. [2024-11-09 05:33:40,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-09 05:33:40,648 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:33:40,648 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:33:40,670 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-09 05:33:40,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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)] Forceful destruction successful, exit code 0 [2024-11-09 05:33:41,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2024-11-09 05:33:41,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 05:33:41,250 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:33:41,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:33:41,250 INFO L85 PathProgramCache]: Analyzing trace with hash -2053138344, now seen corresponding path program 1 times [2024-11-09 05:33:41,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:33:41,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1553660644] [2024-11-09 05:33:41,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:33:41,251 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 05:33:41,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:33:41,252 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:33:41,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:33:41,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:33:41,517 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 05:33:41,520 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:33:41,564 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:33:41,564 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 37 treesize of output 17 [2024-11-09 05:33:41,831 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-09 05:33:41,831 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:33:41,831 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:33:41,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1553660644] [2024-11-09 05:33:41,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1553660644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:33:41,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:33:41,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:33:41,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8988934] [2024-11-09 05:33:41,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:33:41,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:33:41,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:33:41,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:33:41,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:33:41,834 INFO L87 Difference]: Start difference. First operand 475 states and 628 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:33:42,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:33:42,576 INFO L93 Difference]: Finished difference Result 1150 states and 1511 transitions. [2024-11-09 05:33:42,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:33:42,577 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 62 [2024-11-09 05:33:42,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:33:42,580 INFO L225 Difference]: With dead ends: 1150 [2024-11-09 05:33:42,580 INFO L226 Difference]: Without dead ends: 678 [2024-11-09 05:33:42,581 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:33:42,582 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 81 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 05:33:42,583 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 243 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 05:33:42,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2024-11-09 05:33:42,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 612. [2024-11-09 05:33:42,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 564 states have (on average 1.303191489361702) internal successors, (735), 567 states have internal predecessors, (735), 36 states have call successors, (36), 11 states have call predecessors, (36), 11 states have return successors, (36), 33 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-09 05:33:42,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 807 transitions. [2024-11-09 05:33:42,711 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 807 transitions. Word has length 62 [2024-11-09 05:33:42,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:33:42,711 INFO L471 AbstractCegarLoop]: Abstraction has 612 states and 807 transitions. [2024-11-09 05:33:42,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:33:42,712 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 807 transitions. [2024-11-09 05:33:42,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-09 05:33:42,713 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:33:42,713 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:33:42,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:33:42,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:33:42,914 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:33:42,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:33:42,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1311845292, now seen corresponding path program 1 times [2024-11-09 05:33:42,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:33:42,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1796582946] [2024-11-09 05:33:42,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:33:42,915 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 05:33:42,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:33:42,917 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:33:42,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:33:43,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:33:43,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:33:43,154 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:33:43,167 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 05:33:43,168 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:33:43,168 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:33:43,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1796582946] [2024-11-09 05:33:43,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1796582946] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:33:43,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:33:43,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:33:43,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86456727] [2024-11-09 05:33:43,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:33:43,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:33:43,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:33:43,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:33:43,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:33:43,170 INFO L87 Difference]: Start difference. First operand 612 states and 807 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 05:33:43,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:33:43,310 INFO L93 Difference]: Finished difference Result 1144 states and 1510 transitions. [2024-11-09 05:33:43,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:33:43,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 62 [2024-11-09 05:33:43,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:33:43,314 INFO L225 Difference]: With dead ends: 1144 [2024-11-09 05:33:43,314 INFO L226 Difference]: Without dead ends: 612 [2024-11-09 05:33:43,315 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 59 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 05:33:43,315 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 0 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:33:43,316 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 262 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:33:43,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2024-11-09 05:33:43,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 612. [2024-11-09 05:33:43,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 564 states have (on average 1.2960992907801419) internal successors, (731), 567 states have internal predecessors, (731), 36 states have call successors, (36), 11 states have call predecessors, (36), 11 states have return successors, (36), 33 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-09 05:33:43,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 803 transitions. [2024-11-09 05:33:43,428 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 803 transitions. Word has length 62 [2024-11-09 05:33:43,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:33:43,428 INFO L471 AbstractCegarLoop]: Abstraction has 612 states and 803 transitions. [2024-11-09 05:33:43,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 05:33:43,428 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 803 transitions. [2024-11-09 05:33:43,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-09 05:33:43,429 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:33:43,429 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:33:43,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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)] Forceful destruction successful, exit code 0 [2024-11-09 05:33:43,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:33:43,630 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:33:43,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:33:43,630 INFO L85 PathProgramCache]: Analyzing trace with hash 264946402, now seen corresponding path program 1 times [2024-11-09 05:33:43,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:33:43,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1163551820] [2024-11-09 05:33:43,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:33:43,631 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 05:33:43,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:33:43,634 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:33:43,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:33:43,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:33:43,936 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-09 05:33:43,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:33:43,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-09 05:33:44,028 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 16 treesize of output 12 [2024-11-09 05:33:44,039 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 32 treesize of output 25 [2024-11-09 05:33:44,067 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:33:44,068 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 05:33:44,124 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:33:44,125 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 47 [2024-11-09 05:33:44,173 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:33:44,173 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 65 [2024-11-09 05:33:44,940 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:33:44,941 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 95 treesize of output 43 [2024-11-09 05:33:45,033 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-09 05:33:45,034 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:33:45,034 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:33:45,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1163551820] [2024-11-09 05:33:45,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1163551820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:33:45,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:33:45,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-09 05:33:45,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220627948] [2024-11-09 05:33:45,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:33:45,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 05:33:45,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:33:45,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 05:33:45,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-09 05:33:45,037 INFO L87 Difference]: Start difference. First operand 612 states and 803 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 12 states have internal predecessors, (42), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:33:48,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:33:48,633 INFO L93 Difference]: Finished difference Result 756 states and 994 transitions. [2024-11-09 05:33:48,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 05:33:48,635 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 12 states have internal predecessors, (42), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 64 [2024-11-09 05:33:48,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:33:48,638 INFO L225 Difference]: With dead ends: 756 [2024-11-09 05:33:48,639 INFO L226 Difference]: Without dead ends: 754 [2024-11-09 05:33:48,640 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=168, Invalid=482, Unknown=0, NotChecked=0, Total=650 [2024-11-09 05:33:48,640 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 414 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-09 05:33:48,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 581 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-09 05:33:48,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2024-11-09 05:33:48,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 624. [2024-11-09 05:33:48,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 576 states have (on average 1.2899305555555556) internal successors, (743), 579 states have internal predecessors, (743), 36 states have call successors, (36), 11 states have call predecessors, (36), 11 states have return successors, (36), 33 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-09 05:33:48,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 815 transitions. [2024-11-09 05:33:48,749 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 815 transitions. Word has length 64 [2024-11-09 05:33:48,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:33:48,750 INFO L471 AbstractCegarLoop]: Abstraction has 624 states and 815 transitions. [2024-11-09 05:33:48,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 12 states have internal predecessors, (42), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:33:48,750 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 815 transitions. [2024-11-09 05:33:48,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-09 05:33:48,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:33:48,751 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:33:48,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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)] Ended with exit code 0 [2024-11-09 05:33:48,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:33:48,953 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:33:48,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:33:48,953 INFO L85 PathProgramCache]: Analyzing trace with hash 266793444, now seen corresponding path program 1 times [2024-11-09 05:33:48,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:33:48,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [502847339] [2024-11-09 05:33:48,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:33:48,954 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 05:33:48,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:33:48,957 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:33:48,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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)] Waiting until timeout for monitored process [2024-11-09 05:33:49,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:33:49,324 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 05:33:49,328 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:33:49,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-09 05:33:49,462 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 05:33:49,501 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 32 treesize of output 25 [2024-11-09 05:33:49,552 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:33:49,552 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 05:33:49,622 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:33:49,623 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 70 treesize of output 68 [2024-11-09 05:33:51,734 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:33:51,734 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 92 [2024-11-09 05:33:52,955 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:33:52,956 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 118 treesize of output 66 [2024-11-09 05:33:53,086 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-09 05:33:53,086 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:33:53,086 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:33:53,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [502847339] [2024-11-09 05:33:53,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [502847339] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:33:53,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:33:53,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-09 05:33:53,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076697036] [2024-11-09 05:33:53,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:33:53,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 05:33:53,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:33:53,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 05:33:53,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=141, Unknown=1, NotChecked=0, Total=210 [2024-11-09 05:33:53,088 INFO L87 Difference]: Start difference. First operand 624 states and 815 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 14 states have internal predecessors, (42), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:33:55,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:33:58,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:33:58,223 INFO L93 Difference]: Finished difference Result 1252 states and 1641 transitions. [2024-11-09 05:33:58,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 05:33:58,224 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 14 states have internal predecessors, (42), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 64 [2024-11-09 05:33:58,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:33:58,227 INFO L225 Difference]: With dead ends: 1252 [2024-11-09 05:33:58,227 INFO L226 Difference]: Without dead ends: 768 [2024-11-09 05:33:58,228 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=122, Invalid=297, Unknown=1, NotChecked=0, Total=420 [2024-11-09 05:33:58,229 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 352 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 37 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-09 05:33:58,229 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 579 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 673 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2024-11-09 05:33:58,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2024-11-09 05:33:58,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 636. [2024-11-09 05:33:58,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 588 states have (on average 1.284013605442177) internal successors, (755), 591 states have internal predecessors, (755), 36 states have call successors, (36), 11 states have call predecessors, (36), 11 states have return successors, (36), 33 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-09 05:33:58,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 827 transitions. [2024-11-09 05:33:58,358 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 827 transitions. Word has length 64 [2024-11-09 05:33:58,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:33:58,359 INFO L471 AbstractCegarLoop]: Abstraction has 636 states and 827 transitions. [2024-11-09 05:33:58,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 14 states have internal predecessors, (42), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:33:58,359 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 827 transitions. [2024-11-09 05:33:58,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-09 05:33:58,360 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:33:58,361 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:33:58,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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)] Forceful destruction successful, exit code 0 [2024-11-09 05:33:58,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:33:58,565 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:33:58,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:33:58,565 INFO L85 PathProgramCache]: Analyzing trace with hash -327265501, now seen corresponding path program 1 times [2024-11-09 05:33:58,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:33:58,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [791194505] [2024-11-09 05:33:58,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:33:58,566 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 05:33:58,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:33:58,567 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:33:58,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 (22)] Waiting until timeout for monitored process [2024-11-09 05:33:58,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:33:58,799 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:33:58,800 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:33:58,807 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:33:58,807 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 103 treesize of output 31 [2024-11-09 05:33:58,833 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-09 05:33:58,833 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:33:58,833 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:33:58,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [791194505] [2024-11-09 05:33:58,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [791194505] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:33:58,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:33:58,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:33:58,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242602271] [2024-11-09 05:33:58,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:33:58,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:33:58,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:33:58,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:33:58,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:33:58,835 INFO L87 Difference]: Start difference. First operand 636 states and 827 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:33:58,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:33:58,920 INFO L93 Difference]: Finished difference Result 1196 states and 1553 transitions. [2024-11-09 05:33:58,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:33:58,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 64 [2024-11-09 05:33:58,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:33:58,923 INFO L225 Difference]: With dead ends: 1196 [2024-11-09 05:33:58,923 INFO L226 Difference]: Without dead ends: 636 [2024-11-09 05:33:58,924 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:33:58,925 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 0 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:33:58,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 176 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:33:58,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2024-11-09 05:33:59,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 636. [2024-11-09 05:33:59,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 588 states have (on average 1.2636054421768708) internal successors, (743), 591 states have internal predecessors, (743), 36 states have call successors, (36), 11 states have call predecessors, (36), 11 states have return successors, (36), 33 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-09 05:33:59,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 815 transitions. [2024-11-09 05:33:59,036 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 815 transitions. Word has length 64 [2024-11-09 05:33:59,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:33:59,036 INFO L471 AbstractCegarLoop]: Abstraction has 636 states and 815 transitions. [2024-11-09 05:33:59,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:33:59,037 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 815 transitions. [2024-11-09 05:33:59,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-09 05:33:59,038 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:33:59,038 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:33:59,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 (22)] Forceful destruction successful, exit code 0 [2024-11-09 05:33:59,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:33:59,239 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:33:59,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:33:59,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1973557089, now seen corresponding path program 1 times [2024-11-09 05:33:59,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:33:59,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243019365] [2024-11-09 05:33:59,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:33:59,240 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 05:33:59,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:33:59,241 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:33:59,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:33:59,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:33:59,483 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 05:33:59,485 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:33:59,494 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 05:33:59,507 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:33:59,507 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 31 treesize of output 33 [2024-11-09 05:33:59,536 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:33:59,536 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 37 treesize of output 15 [2024-11-09 05:33:59,577 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-09 05:33:59,578 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:33:59,578 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:33:59,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243019365] [2024-11-09 05:33:59,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1243019365] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:33:59,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:33:59,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:33:59,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098411220] [2024-11-09 05:33:59,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:33:59,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:33:59,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:33:59,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:33:59,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:33:59,580 INFO L87 Difference]: Start difference. First operand 636 states and 815 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:34:00,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:34:00,234 INFO L93 Difference]: Finished difference Result 1332 states and 1695 transitions. [2024-11-09 05:34:00,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:34:00,236 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 64 [2024-11-09 05:34:00,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:34:00,238 INFO L225 Difference]: With dead ends: 1332 [2024-11-09 05:34:00,238 INFO L226 Difference]: Without dead ends: 768 [2024-11-09 05:34:00,238 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 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 05:34:00,239 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 33 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 05:34:00,239 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 271 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 05:34:00,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2024-11-09 05:34:00,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 610. [2024-11-09 05:34:00,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 562 states have (on average 1.2473309608540926) internal successors, (701), 565 states have internal predecessors, (701), 36 states have call successors, (36), 11 states have call predecessors, (36), 11 states have return successors, (36), 33 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-09 05:34:00,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 773 transitions. [2024-11-09 05:34:00,340 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 773 transitions. Word has length 64 [2024-11-09 05:34:00,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:34:00,340 INFO L471 AbstractCegarLoop]: Abstraction has 610 states and 773 transitions. [2024-11-09 05:34:00,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:34:00,341 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 773 transitions. [2024-11-09 05:34:00,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-09 05:34:00,342 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:34:00,342 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:34:00,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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)] Forceful destruction successful, exit code 0 [2024-11-09 05:34:00,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:34:00,543 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:34:00,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:34:00,544 INFO L85 PathProgramCache]: Analyzing trace with hash 196043960, now seen corresponding path program 1 times [2024-11-09 05:34:00,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:34:00,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1549216188] [2024-11-09 05:34:00,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:34:00,544 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 05:34:00,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:34:00,545 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:34:00,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:34:00,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:34:00,887 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-09 05:34:00,891 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:34:00,976 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 05:34:03,717 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:34:03,717 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 150 treesize of output 65 [2024-11-09 05:34:03,844 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:34:03,844 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 150 treesize of output 65 [2024-11-09 05:34:03,954 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:34:03,954 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 162 treesize of output 98 [2024-11-09 05:34:04,102 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:34:04,102 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 241 treesize of output 152 [2024-11-09 05:34:04,459 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:34:04,459 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 97 treesize of output 120 [2024-11-09 05:34:05,498 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:34:05,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 298 treesize of output 96 [2024-11-09 05:34:05,612 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 05:34:05,612 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:34:06,502 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:34:06,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1549216188] [2024-11-09 05:34:06,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1549216188] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:34:06,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1206490825] [2024-11-09 05:34:06,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:34:06,502 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:34:06,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:34:06,506 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:34:06,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2024-11-09 05:34:08,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:34:08,061 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-09 05:34:08,067 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:34:10,332 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 16 treesize of output 17 [2024-11-09 05:34:16,597 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:34:16,598 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 118 treesize of output 61 [2024-11-09 05:34:16,637 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:34:16,637 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 118 treesize of output 61 [2024-11-09 05:34:16,850 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:34:16,851 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 128 treesize of output 88 [2024-11-09 05:34:17,137 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:34:17,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 28 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 174 treesize of output 134 [2024-11-09 05:34:17,610 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:34:17,610 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 107 treesize of output 115 [2024-11-09 05:34:19,009 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:34:19,009 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 224 treesize of output 92 [2024-11-09 05:34:19,039 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 05:34:19,040 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:34:19,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1206490825] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:34:19,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644749078] [2024-11-09 05:34:19,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:34:19,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:34:19,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:34:19,673 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:34:19,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-09 05:34:20,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:34:20,212 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 05:34:20,218 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:34:20,228 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 10 treesize of output 4 [2024-11-09 05:34:27,992 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:34:27,993 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 75 treesize of output 38 [2024-11-09 05:34:28,008 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:34:28,009 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 75 treesize of output 38 [2024-11-09 05:34:28,023 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:34:28,024 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 87 treesize of output 71 [2024-11-09 05:34:28,210 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:34:28,211 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 171 treesize of output 115 [2024-11-09 05:34:28,627 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:34:28,627 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 179 treesize of output 139 [2024-11-09 05:34:29,491 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:34:29,492 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 380 treesize of output 124 [2024-11-09 05:34:29,518 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 05:34:29,518 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:34:31,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644749078] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:34:31,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:34:31,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 16] total 39 [2024-11-09 05:34:31,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695955214] [2024-11-09 05:34:31,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:34:31,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-09 05:34:31,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:34:31,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-09 05:34:31,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=1556, Unknown=6, NotChecked=0, Total=1806 [2024-11-09 05:34:31,783 INFO L87 Difference]: Start difference. First operand 610 states and 773 transitions. Second operand has 40 states, 37 states have (on average 2.918918918918919) internal successors, (108), 36 states have internal predecessors, (108), 5 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2024-11-09 05:34:56,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:34:56,241 INFO L93 Difference]: Finished difference Result 1437 states and 1807 transitions. [2024-11-09 05:34:56,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-09 05:34:56,242 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 37 states have (on average 2.918918918918919) internal successors, (108), 36 states have internal predecessors, (108), 5 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 64 [2024-11-09 05:34:56,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:34:56,247 INFO L225 Difference]: With dead ends: 1437 [2024-11-09 05:34:56,247 INFO L226 Difference]: Without dead ends: 1067 [2024-11-09 05:34:56,250 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 219 SyntacticMatches, 7 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1625 ImplicationChecksByTransitivity, 30.5s TimeCoverageRelationStatistics Valid=885, Invalid=4659, Unknown=6, NotChecked=0, Total=5550 [2024-11-09 05:34:56,251 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 773 mSDsluCounter, 1220 mSDsCounter, 0 mSdLazyCounter, 2425 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 1295 SdHoareTripleChecker+Invalid, 2651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 2425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:34:56,251 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [773 Valid, 1295 Invalid, 2651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 2425 Invalid, 0 Unknown, 0 Unchecked, 17.4s Time] [2024-11-09 05:34:56,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2024-11-09 05:34:56,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 747. [2024-11-09 05:34:56,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 690 states have (on average 1.2449275362318841) internal successors, (859), 693 states have internal predecessors, (859), 40 states have call successors, (40), 16 states have call predecessors, (40), 16 states have return successors, (40), 37 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-09 05:34:56,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 939 transitions. [2024-11-09 05:34:56,415 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 939 transitions. Word has length 64 [2024-11-09 05:34:56,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:34:56,416 INFO L471 AbstractCegarLoop]: Abstraction has 747 states and 939 transitions. [2024-11-09 05:34:56,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 37 states have (on average 2.918918918918919) internal successors, (108), 36 states have internal predecessors, (108), 5 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2024-11-09 05:34:56,417 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 939 transitions. [2024-11-09 05:34:56,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-09 05:34:56,418 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:34:56,418 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:34:56,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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)] Ended with exit code 0 [2024-11-09 05:34:56,648 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-09 05:34:56,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2024-11-09 05:34:57,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 05:34:57,019 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:34:57,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:34:57,020 INFO L85 PathProgramCache]: Analyzing trace with hash -392371464, now seen corresponding path program 1 times [2024-11-09 05:34:57,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:34:57,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [896623370] [2024-11-09 05:34:57,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:34:57,021 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 05:34:57,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:34:57,024 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:34:57,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 (27)] Waiting until timeout for monitored process [2024-11-09 05:34:57,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:34:57,448 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-09 05:34:57,453 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:34:57,528 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 25 treesize of output 10 [2024-11-09 05:35:00,124 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:35:00,125 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 140 treesize of output 61 [2024-11-09 05:35:00,220 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:35:00,220 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 140 treesize of output 61 [2024-11-09 05:35:00,326 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:35:00,326 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 209 treesize of output 102 [2024-11-09 05:35:00,494 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:35:00,494 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 172 treesize of output 135 [2024-11-09 05:35:01,351 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:35:01,352 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 373 treesize of output 147 [2024-11-09 05:35:01,468 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 05:35:01,468 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:35:03,932 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:35:03,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [896623370] [2024-11-09 05:35:03,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [896623370] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:35:03,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [425553980] [2024-11-09 05:35:03,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:35:03,933 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:35:03,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:35:03,936 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:35:03,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2024-11-09 05:35:05,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:35:05,237 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-09 05:35:05,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:35:07,476 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 16 treesize of output 17 [2024-11-09 05:35:13,220 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:35:13,221 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 118 treesize of output 61 [2024-11-09 05:35:13,373 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:35:13,374 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 118 treesize of output 61 [2024-11-09 05:35:13,584 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:35:13,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 171 treesize of output 98 [2024-11-09 05:35:13,872 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:35:13,872 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 181 treesize of output 120 [2024-11-09 05:35:14,786 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:35:14,786 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 334 treesize of output 142 [2024-11-09 05:35:14,808 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 05:35:14,809 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:35:17,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [425553980] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:35:17,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498066332] [2024-11-09 05:35:17,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:35:17,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:35:17,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:35:17,052 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:35:17,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-09 05:35:17,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:35:17,474 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 05:35:17,478 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:35:18,089 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:35:18,090 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 75 treesize of output 38 [2024-11-09 05:35:18,101 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:35:18,102 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 75 treesize of output 38 [2024-11-09 05:35:18,124 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:35:18,125 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 144 treesize of output 79 [2024-11-09 05:35:18,367 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:35:18,367 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 103 [2024-11-09 05:35:19,006 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:35:19,006 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 353 treesize of output 115 [2024-11-09 05:35:19,032 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 05:35:19,032 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:35:21,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498066332] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:35:21,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:35:21,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 33 [2024-11-09 05:35:21,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587063810] [2024-11-09 05:35:21,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:35:21,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-09 05:35:21,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:35:21,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-09 05:35:21,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1066, Unknown=4, NotChecked=0, Total=1260 [2024-11-09 05:35:21,276 INFO L87 Difference]: Start difference. First operand 747 states and 939 transitions. Second operand has 33 states, 30 states have (on average 3.6) internal successors, (108), 30 states have internal predecessors, (108), 5 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2024-11-09 05:35:29,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result VALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:35:34,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:35:34,142 INFO L93 Difference]: Finished difference Result 1546 states and 1948 transitions. [2024-11-09 05:35:34,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 05:35:34,145 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 30 states have (on average 3.6) internal successors, (108), 30 states have internal predecessors, (108), 5 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 64 [2024-11-09 05:35:34,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:35:34,148 INFO L225 Difference]: With dead ends: 1546 [2024-11-09 05:35:34,148 INFO L226 Difference]: Without dead ends: 956 [2024-11-09 05:35:34,149 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 226 SyntacticMatches, 7 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 885 ImplicationChecksByTransitivity, 20.4s TimeCoverageRelationStatistics Valid=563, Invalid=2513, Unknown=4, NotChecked=0, Total=3080 [2024-11-09 05:35:34,150 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 347 mSDsluCounter, 990 mSDsCounter, 0 mSdLazyCounter, 2007 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 2101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2024-11-09 05:35:34,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 1062 Invalid, 2101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 2007 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2024-11-09 05:35:34,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2024-11-09 05:35:34,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 618. [2024-11-09 05:35:34,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 569 states have (on average 1.2442882249560632) internal successors, (708), 572 states have internal predecessors, (708), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (36), 33 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-09 05:35:34,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 780 transitions. [2024-11-09 05:35:34,251 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 780 transitions. Word has length 64 [2024-11-09 05:35:34,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:35:34,252 INFO L471 AbstractCegarLoop]: Abstraction has 618 states and 780 transitions. [2024-11-09 05:35:34,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 30 states have (on average 3.6) internal successors, (108), 30 states have internal predecessors, (108), 5 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2024-11-09 05:35:34,252 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 780 transitions. [2024-11-09 05:35:34,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-09 05:35:34,253 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:35:34,254 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:35:34,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (28)] Ended with exit code 0 [2024-11-09 05:35:34,470 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-09 05:35:34,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 (27)] Forceful destruction successful, exit code 0 [2024-11-09 05:35:34,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:35:34,855 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:35:34,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:35:34,855 INFO L85 PathProgramCache]: Analyzing trace with hash 470803574, now seen corresponding path program 1 times [2024-11-09 05:35:34,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:35:34,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [570615367] [2024-11-09 05:35:34,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:35:34,856 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 05:35:34,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:35:34,857 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:35:34,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 (30)] Waiting until timeout for monitored process [2024-11-09 05:35:35,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:35:35,087 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 05:35:35,089 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:35:35,122 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-09 05:35:35,122 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:35:35,122 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:35:35,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [570615367] [2024-11-09 05:35:35,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [570615367] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:35:35,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:35:35,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 05:35:35,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861826543] [2024-11-09 05:35:35,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:35:35,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:35:35,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:35:35,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:35:35,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:35:35,125 INFO L87 Difference]: Start difference. First operand 618 states and 780 transitions. Second operand has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 05:35:35,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:35:35,295 INFO L93 Difference]: Finished difference Result 903 states and 1133 transitions. [2024-11-09 05:35:35,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:35:35,296 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 64 [2024-11-09 05:35:35,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:35:35,298 INFO L225 Difference]: With dead ends: 903 [2024-11-09 05:35:35,298 INFO L226 Difference]: Without dead ends: 345 [2024-11-09 05:35:35,299 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:35:35,299 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 1 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:35:35,299 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 398 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:35:35,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2024-11-09 05:35:35,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 337. [2024-11-09 05:35:35,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 308 states have (on average 1.224025974025974) internal successors, (377), 308 states have internal predecessors, (377), 20 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-09 05:35:35,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 417 transitions. [2024-11-09 05:35:35,393 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 417 transitions. Word has length 64 [2024-11-09 05:35:35,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:35:35,393 INFO L471 AbstractCegarLoop]: Abstraction has 337 states and 417 transitions. [2024-11-09 05:35:35,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 05:35:35,394 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 417 transitions. [2024-11-09 05:35:35,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-09 05:35:35,394 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:35:35,395 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:35:35,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 (30)] Ended with exit code 0 [2024-11-09 05:35:35,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:35:35,595 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:35:35,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:35:35,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1789383983, now seen corresponding path program 1 times [2024-11-09 05:35:35,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:35:35,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2055484392] [2024-11-09 05:35:35,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:35:35,597 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 05:35:35,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:35:35,598 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:35:35,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:35:35,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:35:35,916 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:35:35,917 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:35:35,923 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:35:35,923 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 103 treesize of output 31 [2024-11-09 05:35:35,948 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-09 05:35:35,948 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:35:35,948 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:35:35,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2055484392] [2024-11-09 05:35:35,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2055484392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:35:35,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:35:35,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:35:35,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717517638] [2024-11-09 05:35:35,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:35:35,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:35:35,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:35:35,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:35:35,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:35:35,950 INFO L87 Difference]: Start difference. First operand 337 states and 417 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:35:36,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:35:36,051 INFO L93 Difference]: Finished difference Result 559 states and 700 transitions. [2024-11-09 05:35:36,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:35:36,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 67 [2024-11-09 05:35:36,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:35:36,054 INFO L225 Difference]: With dead ends: 559 [2024-11-09 05:35:36,054 INFO L226 Difference]: Without dead ends: 337 [2024-11-09 05:35:36,055 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:35:36,055 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 0 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:35:36,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 171 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:35:36,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2024-11-09 05:35:36,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2024-11-09 05:35:36,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 308 states have (on average 1.2077922077922079) internal successors, (372), 308 states have internal predecessors, (372), 20 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-09 05:35:36,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 412 transitions. [2024-11-09 05:35:36,150 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 412 transitions. Word has length 67 [2024-11-09 05:35:36,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:35:36,150 INFO L471 AbstractCegarLoop]: Abstraction has 337 states and 412 transitions. [2024-11-09 05:35:36,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:35:36,151 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 412 transitions. [2024-11-09 05:35:36,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-09 05:35:36,152 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:35:36,152 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:35:36,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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)] Forceful destruction successful, exit code 0 [2024-11-09 05:35:36,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:35:36,353 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:35:36,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:35:36,353 INFO L85 PathProgramCache]: Analyzing trace with hash 700144979, now seen corresponding path program 1 times [2024-11-09 05:35:36,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:35:36,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [280836158] [2024-11-09 05:35:36,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:35:36,354 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:35:36,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:35:36,357 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:35:36,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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)] Waiting until timeout for monitored process [2024-11-09 05:35:36,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:35:36,711 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 05:35:36,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:35:36,719 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 05:35:36,787 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 05:35:36,924 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:35:36,924 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 46 treesize of output 37 [2024-11-09 05:35:39,107 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:35:39,108 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 05:35:39,134 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:35:39,135 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 05:35:39,155 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:35:39,156 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 05:35:39,242 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:35:39,243 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 99 treesize of output 76 [2024-11-09 05:35:39,346 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:35:39,347 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 85 [2024-11-09 05:35:39,592 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:35:39,592 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 05:35:39,691 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 05:35:39,691 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:35:39,692 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:35:39,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [280836158] [2024-11-09 05:35:39,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [280836158] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:35:39,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:35:39,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 05:35:39,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499085645] [2024-11-09 05:35:39,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:35:39,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 05:35:39,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:35:39,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 05:35:39,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=62, Unknown=1, NotChecked=0, Total=90 [2024-11-09 05:35:39,694 INFO L87 Difference]: Start difference. First operand 337 states and 412 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-09 05:35:41,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:35:41,606 INFO L93 Difference]: Finished difference Result 674 states and 827 transitions. [2024-11-09 05:35:41,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 05:35:41,607 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 67 [2024-11-09 05:35:41,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:35:41,608 INFO L225 Difference]: With dead ends: 674 [2024-11-09 05:35:41,608 INFO L226 Difference]: Without dead ends: 476 [2024-11-09 05:35:41,609 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=51, Invalid=104, Unknown=1, NotChecked=0, Total=156 [2024-11-09 05:35:41,609 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 233 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-09 05:35:41,609 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 297 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-09 05:35:41,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2024-11-09 05:35:41,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 343. [2024-11-09 05:35:41,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 314 states have (on average 1.2070063694267517) internal successors, (379), 314 states have internal predecessors, (379), 20 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-09 05:35:41,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 419 transitions. [2024-11-09 05:35:41,678 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 419 transitions. Word has length 67 [2024-11-09 05:35:41,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:35:41,678 INFO L471 AbstractCegarLoop]: Abstraction has 343 states and 419 transitions. [2024-11-09 05:35:41,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-09 05:35:41,679 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 419 transitions. [2024-11-09 05:35:41,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-09 05:35:41,679 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:35:41,680 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:35:41,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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)] Forceful destruction successful, exit code 0 [2024-11-09 05:35:41,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:35:41,881 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:35:41,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:35:41,881 INFO L85 PathProgramCache]: Analyzing trace with hash 52151864, now seen corresponding path program 1 times [2024-11-09 05:35:41,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:35:41,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1306973659] [2024-11-09 05:35:41,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:35:41,882 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 05:35:41,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:35:41,883 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:35:41,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:35:42,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:35:42,161 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:35:42,163 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:35:42,192 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:35:42,193 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 103 treesize of output 31 [2024-11-09 05:35:42,235 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-09 05:35:42,235 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:35:42,236 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:35:42,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1306973659] [2024-11-09 05:35:42,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1306973659] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:35:42,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:35:42,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:35:42,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139367069] [2024-11-09 05:35:42,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:35:42,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:35:42,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:35:42,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:35:42,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:35:42,238 INFO L87 Difference]: Start difference. First operand 343 states and 419 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:35:42,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:35:42,760 INFO L93 Difference]: Finished difference Result 546 states and 670 transitions. [2024-11-09 05:35:42,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:35:42,762 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 69 [2024-11-09 05:35:42,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:35:42,763 INFO L225 Difference]: With dead ends: 546 [2024-11-09 05:35:42,763 INFO L226 Difference]: Without dead ends: 329 [2024-11-09 05:35:42,763 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:35:42,764 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 1 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:35:42,764 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 206 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:35:42,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2024-11-09 05:35:42,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2024-11-09 05:35:42,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 300 states have (on average 1.18) internal successors, (354), 300 states have internal predecessors, (354), 20 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-09 05:35:42,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 394 transitions. [2024-11-09 05:35:42,861 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 394 transitions. Word has length 69 [2024-11-09 05:35:42,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:35:42,862 INFO L471 AbstractCegarLoop]: Abstraction has 329 states and 394 transitions. [2024-11-09 05:35:42,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:35:42,862 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 394 transitions. [2024-11-09 05:35:42,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 05:35:42,865 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:35:42,865 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 05:35:42,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:35:43,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:35:43,066 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:35:43,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:35:43,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1629960254, now seen corresponding path program 1 times [2024-11-09 05:35:43,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:35:43,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [434966290] [2024-11-09 05:35:43,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:35:43,068 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 05:35:43,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:35:43,069 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:35:43,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:35:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:35:43,381 INFO L255 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-09 05:35:43,384 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:35:43,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-09 05:35:45,675 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:35:45,675 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 96 treesize of output 40 [2024-11-09 05:35:47,628 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 135 proven. 1 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-09 05:35:47,629 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:35:51,515 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:35:51,516 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 100 treesize of output 1 [2024-11-09 05:35:51,543 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-09 05:35:51,544 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:35:51,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [434966290] [2024-11-09 05:35:51,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [434966290] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 05:35:51,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:35:51,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [16] total 30 [2024-11-09 05:35:51,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407011312] [2024-11-09 05:35:51,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:35:51,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 05:35:51,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:35:51,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 05:35:51,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=720, Unknown=0, NotChecked=0, Total=870 [2024-11-09 05:35:51,547 INFO L87 Difference]: Start difference. First operand 329 states and 394 transitions. Second operand has 15 states, 15 states have (on average 5.066666666666666) internal successors, (76), 15 states have internal predecessors, (76), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-09 05:36:01,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:36:01,548 INFO L93 Difference]: Finished difference Result 842 states and 1005 transitions. [2024-11-09 05:36:01,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-09 05:36:01,549 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.066666666666666) internal successors, (76), 15 states have internal predecessors, (76), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 123 [2024-11-09 05:36:01,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:36:01,552 INFO L225 Difference]: With dead ends: 842 [2024-11-09 05:36:01,552 INFO L226 Difference]: Without dead ends: 587 [2024-11-09 05:36:01,554 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=555, Invalid=2751, Unknown=0, NotChecked=0, Total=3306 [2024-11-09 05:36:01,554 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 351 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-09 05:36:01,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 539 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-09 05:36:01,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2024-11-09 05:36:01,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 429. [2024-11-09 05:36:01,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 386 states have (on average 1.1735751295336787) internal successors, (453), 386 states have internal predecessors, (453), 30 states have call successors, (30), 12 states have call predecessors, (30), 12 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-09 05:36:01,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 513 transitions. [2024-11-09 05:36:01,653 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 513 transitions. Word has length 123 [2024-11-09 05:36:01,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:36:01,653 INFO L471 AbstractCegarLoop]: Abstraction has 429 states and 513 transitions. [2024-11-09 05:36:01,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.066666666666666) internal successors, (76), 15 states have internal predecessors, (76), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-09 05:36:01,654 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 513 transitions. [2024-11-09 05:36:01,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 05:36:01,655 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:36:01,656 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 05:36:01,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:36:01,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:36:01,856 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:36:01,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:36:01,857 INFO L85 PathProgramCache]: Analyzing trace with hash -930902592, now seen corresponding path program 1 times [2024-11-09 05:36:01,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:36:01,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [428227926] [2024-11-09 05:36:01,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:36:01,857 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 05:36:01,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:36:01,859 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:36:01,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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)] Waiting until timeout for monitored process [2024-11-09 05:36:02,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:36:02,323 INFO L255 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-09 05:36:02,329 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:36:02,366 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 29 treesize of output 17 [2024-11-09 05:36:02,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-09 05:36:02,400 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 05:36:02,502 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 36 treesize of output 24 [2024-11-09 05:36:04,661 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:36:04,661 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 05:36:04,737 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 52 treesize of output 51 [2024-11-09 05:36:04,846 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:36:04,846 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 108 treesize of output 89 [2024-11-09 05:36:05,045 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:36:05,046 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 141 treesize of output 94 [2024-11-09 05:36:05,112 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:36:05,113 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 119 treesize of output 103 [2024-11-09 05:36:08,086 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:36:08,086 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 135 treesize of output 55 [2024-11-09 05:36:08,655 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 96 proven. 72 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-09 05:36:08,656 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:36:10,916 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-09 05:36:10,916 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:36:10,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [428227926] [2024-11-09 05:36:10,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [428227926] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 05:36:10,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:36:10,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [18] total 31 [2024-11-09 05:36:10,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542641851] [2024-11-09 05:36:10,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:36:10,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 05:36:10,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:36:10,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 05:36:10,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=722, Unknown=1, NotChecked=0, Total=930 [2024-11-09 05:36:10,919 INFO L87 Difference]: Start difference. First operand 429 states and 513 transitions. Second operand has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-09 05:36:15,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:36:15,093 INFO L93 Difference]: Finished difference Result 883 states and 1055 transitions. [2024-11-09 05:36:15,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 05:36:15,096 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 123 [2024-11-09 05:36:15,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:36:15,099 INFO L225 Difference]: With dead ends: 883 [2024-11-09 05:36:15,099 INFO L226 Difference]: Without dead ends: 679 [2024-11-09 05:36:15,100 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 669 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=397, Invalid=1672, Unknown=1, NotChecked=0, Total=2070 [2024-11-09 05:36:15,101 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 262 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-09 05:36:15,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 515 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-09 05:36:15,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2024-11-09 05:36:15,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 430. [2024-11-09 05:36:15,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 387 states have (on average 1.1757105943152455) internal successors, (455), 387 states have internal predecessors, (455), 30 states have call successors, (30), 12 states have call predecessors, (30), 12 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-09 05:36:15,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 515 transitions. [2024-11-09 05:36:15,207 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 515 transitions. Word has length 123 [2024-11-09 05:36:15,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:36:15,207 INFO L471 AbstractCegarLoop]: Abstraction has 430 states and 515 transitions. [2024-11-09 05:36:15,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-09 05:36:15,208 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 515 transitions. [2024-11-09 05:36:15,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 05:36:15,209 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:36:15,210 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 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 05:36:15,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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)] Forceful destruction successful, exit code 0 [2024-11-09 05:36:15,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:36:15,410 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:36:15,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:36:15,411 INFO L85 PathProgramCache]: Analyzing trace with hash 635855358, now seen corresponding path program 1 times [2024-11-09 05:36:15,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:36:15,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1973433655] [2024-11-09 05:36:15,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:36:15,412 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 05:36:15,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:36:15,413 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:36:15,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 (36)] Waiting until timeout for monitored process [2024-11-09 05:36:15,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:36:15,928 INFO L255 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 05:36:15,930 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:36:15,936 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 05:36:15,938 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 19 treesize of output 19 [2024-11-09 05:36:15,960 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:36:15,960 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 60 treesize of output 30 [2024-11-09 05:36:15,987 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2024-11-09 05:36:15,987 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:36:15,987 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:36:15,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1973433655] [2024-11-09 05:36:15,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1973433655] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:36:15,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:36:15,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:36:15,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208074565] [2024-11-09 05:36:15,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:36:15,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:36:15,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:36:15,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:36:15,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:36:15,991 INFO L87 Difference]: Start difference. First operand 430 states and 515 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:36:16,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:36:16,403 INFO L93 Difference]: Finished difference Result 644 states and 779 transitions. [2024-11-09 05:36:16,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:36:16,405 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 123 [2024-11-09 05:36:16,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:36:16,407 INFO L225 Difference]: With dead ends: 644 [2024-11-09 05:36:16,408 INFO L226 Difference]: Without dead ends: 436 [2024-11-09 05:36:16,408 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:36:16,409 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 39 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:36:16,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 225 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:36:16,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2024-11-09 05:36:16,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 430. [2024-11-09 05:36:16,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 387 states have (on average 1.1705426356589148) internal successors, (453), 387 states have internal predecessors, (453), 30 states have call successors, (30), 12 states have call predecessors, (30), 12 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-09 05:36:16,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 513 transitions. [2024-11-09 05:36:16,521 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 513 transitions. Word has length 123 [2024-11-09 05:36:16,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:36:16,522 INFO L471 AbstractCegarLoop]: Abstraction has 430 states and 513 transitions. [2024-11-09 05:36:16,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:36:16,522 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 513 transitions. [2024-11-09 05:36:16,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-09 05:36:16,523 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:36:16,523 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 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 05:36:16,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 (36)] Ended with exit code 0 [2024-11-09 05:36:16,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:36:16,724 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:36:16,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:36:16,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1857501047, now seen corresponding path program 1 times [2024-11-09 05:36:16,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:36:16,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [742466830] [2024-11-09 05:36:16,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:36:16,725 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 05:36:16,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:36:16,726 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:36:16,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:36:17,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:36:17,284 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-09 05:36:17,292 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:36:17,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-09 05:36:17,393 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 16 treesize of output 12 [2024-11-09 05:36:17,404 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 05:36:17,415 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 47 treesize of output 24 [2024-11-09 05:36:19,453 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:36:19,453 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 40 treesize of output 45 [2024-11-09 05:36:20,303 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 80 treesize of output 56 [2024-11-09 05:36:20,309 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:36:20,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 56 treesize of output 26 [2024-11-09 05:36:20,410 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 19 treesize of output 1 [2024-11-09 05:36:20,472 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 05:36:24,911 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:36:24,911 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 76 treesize of output 75 [2024-11-09 05:36:25,028 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 0 case distinctions, treesize of input 93 treesize of output 89 [2024-11-09 05:36:25,205 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:36:25,205 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 149 treesize of output 118 [2024-11-09 05:36:25,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 36 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 177 treesize of output 133 [2024-11-09 05:36:26,139 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 150 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-09 05:36:26,139 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:36:35,842 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:36:35,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [742466830] [2024-11-09 05:36:35,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [742466830] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:36:35,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1615453249] [2024-11-09 05:36:35,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:36:35,843 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:36:35,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:36:35,844 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:36:35,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2024-11-09 05:36:37,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:36:37,495 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-09 05:36:37,503 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:36:40,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-09 05:36:47,162 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:36:47,163 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 56 treesize of output 35 [2024-11-09 05:36:49,573 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:36:49,574 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 53 treesize of output 43 [2024-11-09 05:36:52,119 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:36:52,119 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 67 treesize of output 64 [2024-11-09 05:36:55,775 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:36:55,776 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 106 treesize of output 93 [2024-11-09 05:36:56,678 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 0 case distinctions, treesize of input 74 treesize of output 77 [2024-11-09 05:36:57,403 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:36:57,403 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 121 treesize of output 111 [2024-11-09 05:36:58,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 45 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 146 [2024-11-09 05:36:59,583 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:36:59,584 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 175 treesize of output 163 [2024-11-09 05:36:59,613 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 165 proven. 5 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-09 05:36:59,613 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:37:06,345 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2024-11-09 05:37:06,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1615453249] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 05:37:06,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 05:37:06,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [18, 18] total 44 [2024-11-09 05:37:06,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795778979] [2024-11-09 05:37:06,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:37:06,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 05:37:06,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:37:06,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 05:37:06,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=2317, Unknown=7, NotChecked=0, Total=2550 [2024-11-09 05:37:06,348 INFO L87 Difference]: Start difference. First operand 430 states and 513 transitions. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:37:10,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:37:12,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:37:14,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:37:24,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:37:24,259 INFO L93 Difference]: Finished difference Result 743 states and 888 transitions. [2024-11-09 05:37:24,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 05:37:24,261 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 125 [2024-11-09 05:37:24,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:37:24,263 INFO L225 Difference]: With dead ends: 743 [2024-11-09 05:37:24,264 INFO L226 Difference]: Without dead ends: 535 [2024-11-09 05:37:24,265 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 350 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1145 ImplicationChecksByTransitivity, 51.4s TimeCoverageRelationStatistics Valid=331, Invalid=3322, Unknown=7, NotChecked=0, Total=3660 [2024-11-09 05:37:24,265 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 111 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 12 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:37:24,266 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 413 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 273 Invalid, 3 Unknown, 0 Unchecked, 8.3s Time] [2024-11-09 05:37:24,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2024-11-09 05:37:24,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 436. [2024-11-09 05:37:24,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 393 states have (on average 1.173027989821883) internal successors, (461), 393 states have internal predecessors, (461), 30 states have call successors, (30), 12 states have call predecessors, (30), 12 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-09 05:37:24,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 521 transitions. [2024-11-09 05:37:24,350 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 521 transitions. Word has length 125 [2024-11-09 05:37:24,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:37:24,351 INFO L471 AbstractCegarLoop]: Abstraction has 436 states and 521 transitions. [2024-11-09 05:37:24,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:37:24,351 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 521 transitions. [2024-11-09 05:37:24,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-09 05:37:24,353 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:37:24,353 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 05:37:24,364 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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)] Ended with exit code 0 [2024-11-09 05:37:24,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (38)] Forceful destruction successful, exit code 0 [2024-11-09 05:37:24,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 05:37:24,754 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:37:24,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:37:24,754 INFO L85 PathProgramCache]: Analyzing trace with hash -2014764423, now seen corresponding path program 1 times [2024-11-09 05:37:24,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:37:24,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [240064640] [2024-11-09 05:37:24,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:37:24,755 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 05:37:24,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:37:24,756 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:37:24,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:37:25,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:37:25,317 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-09 05:37:25,323 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:37:25,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-09 05:37:25,415 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 16 treesize of output 12 [2024-11-09 05:37:25,426 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 05:37:25,438 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 34 [2024-11-09 05:37:27,486 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:37:27,487 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 50 treesize of output 58 [2024-11-09 05:37:28,505 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 90 treesize of output 64 [2024-11-09 05:37:28,514 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:37:28,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 64 treesize of output 30 [2024-11-09 05:37:28,628 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 05:37:28,712 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 25 treesize of output 10 [2024-11-09 05:37:33,071 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:37:33,072 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 66 treesize of output 62 [2024-11-09 05:37:33,181 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:37:33,182 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 83 treesize of output 76 [2024-11-09 05:37:33,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 21 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 79 [2024-11-09 05:37:33,541 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:37:33,542 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 109 treesize of output 93 [2024-11-09 05:37:33,821 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:37:33,821 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 134 treesize of output 64 [2024-11-09 05:37:33,941 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 145 proven. 9 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-09 05:37:33,941 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:37:46,233 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:37:46,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [240064640] [2024-11-09 05:37:46,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [240064640] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:37:46,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [444720679] [2024-11-09 05:37:46,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:37:46,234 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:37:46,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:37:46,235 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:37:46,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (40)] Waiting until timeout for monitored process [2024-11-09 05:37:47,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:37:47,803 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-09 05:37:47,822 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:37:50,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-09 05:37:58,027 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:37:58,027 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 56 treesize of output 35 [2024-11-09 05:37:58,319 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:37:58,319 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 53 treesize of output 43 [2024-11-09 05:38:00,919 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:38:00,920 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 70 treesize of output 56 [2024-11-09 05:38:04,412 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:38:04,412 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 103 treesize of output 83 [2024-11-09 05:38:05,288 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:38:05,288 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 84 treesize of output 80 [2024-11-09 05:38:06,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 28 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 86 [2024-11-09 05:38:06,885 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:38:06,886 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 117 treesize of output 115 [2024-11-09 05:38:08,012 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:38:08,013 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 148 treesize of output 92 [2024-11-09 05:38:08,142 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 160 proven. 10 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-09 05:38:08,143 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:38:12,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [444720679] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:38:12,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958699965] [2024-11-09 05:38:12,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:38:12,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:38:12,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:38:12,146 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:38:12,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-09 05:38:12,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:38:12,459 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-09 05:38:12,464 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:38:12,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-09 05:38:17,301 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:38:17,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 21 [2024-11-09 05:38:25,189 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 56 treesize of output 49 [2024-11-09 05:38:28,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 63 [2024-11-09 05:38:39,159 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:38:39,159 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 140 treesize of output 78 [2024-11-09 05:38:44,504 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:38:44,504 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 118 treesize of output 87 [2024-11-09 05:39:09,885 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:39:09,885 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 124 treesize of output 60 [2024-11-09 05:39:10,008 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 128 proven. 10 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-09 05:39:10,008 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:39:16,759 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2024-11-09 05:39:16,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958699965] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 05:39:16,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:39:16,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19, 21, 21] total 62 [2024-11-09 05:39:16,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925744460] [2024-11-09 05:39:16,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:39:16,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 05:39:16,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:39:16,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 05:39:16,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=4366, Unknown=25, NotChecked=0, Total=4830 [2024-11-09 05:39:16,763 INFO L87 Difference]: Start difference. First operand 436 states and 521 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:39:20,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:39:22,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:39:30,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:39:33,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:39:35,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:39:37,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:39:39,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:39:41,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:39:43,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:39:45,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:39:47,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:39:47,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:39:47,683 INFO L93 Difference]: Finished difference Result 711 states and 852 transitions. [2024-11-09 05:39:47,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 05:39:47,687 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 125 [2024-11-09 05:39:47,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:39:47,689 INFO L225 Difference]: With dead ends: 711 [2024-11-09 05:39:47,689 INFO L226 Difference]: Without dead ends: 497 [2024-11-09 05:39:47,691 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 559 GetRequests, 479 SyntacticMatches, 6 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2232 ImplicationChecksByTransitivity, 105.4s TimeCoverageRelationStatistics Valid=538, Invalid=5137, Unknown=25, NotChecked=0, Total=5700 [2024-11-09 05:39:47,691 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 80 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 9 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.9s IncrementalHoareTripleChecker+Time [2024-11-09 05:39:47,692 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 451 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 359 Invalid, 11 Unknown, 0 Unchecked, 25.9s Time] [2024-11-09 05:39:47,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2024-11-09 05:39:47,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 442. [2024-11-09 05:39:47,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 399 states have (on average 1.1704260651629073) internal successors, (467), 399 states have internal predecessors, (467), 30 states have call successors, (30), 12 states have call predecessors, (30), 12 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-09 05:39:47,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 527 transitions. [2024-11-09 05:39:47,819 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 527 transitions. Word has length 125 [2024-11-09 05:39:47,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:39:47,820 INFO L471 AbstractCegarLoop]: Abstraction has 442 states and 527 transitions. [2024-11-09 05:39:47,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:39:47,820 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 527 transitions. [2024-11-09 05:39:47,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-09 05:39:47,821 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:39:47,821 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:39:47,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2024-11-09 05:39:48,031 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (40)] Ended with exit code 0 [2024-11-09 05:39:48,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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)] Forceful destruction successful, exit code 0 [2024-11-09 05:39:48,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:39:48,423 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:39:48,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:39:48,424 INFO L85 PathProgramCache]: Analyzing trace with hash -83298749, now seen corresponding path program 1 times [2024-11-09 05:39:48,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:39:48,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [337459792] [2024-11-09 05:39:48,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:39:48,425 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 05:39:48,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:39:48,426 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:39:48,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:39:48,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:39:48,889 INFO L255 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:39:48,892 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:39:49,007 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-11-09 05:39:49,008 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:39:49,008 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:39:49,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [337459792] [2024-11-09 05:39:49,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [337459792] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:39:49,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:39:49,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:39:49,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116699240] [2024-11-09 05:39:49,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:39:49,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:39:49,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:39:49,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:39:49,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:39:49,010 INFO L87 Difference]: Start difference. First operand 442 states and 527 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:39:49,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:39:49,210 INFO L93 Difference]: Finished difference Result 685 states and 822 transitions. [2024-11-09 05:39:49,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:39:49,211 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 127 [2024-11-09 05:39:49,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:39:49,213 INFO L225 Difference]: With dead ends: 685 [2024-11-09 05:39:49,213 INFO L226 Difference]: Without dead ends: 465 [2024-11-09 05:39:49,213 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 124 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 05:39:49,214 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 33 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:39:49,214 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 316 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:39:49,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2024-11-09 05:39:49,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 427. [2024-11-09 05:39:49,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 384 states have (on average 1.1640625) internal successors, (447), 384 states have internal predecessors, (447), 30 states have call successors, (30), 12 states have call predecessors, (30), 12 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-09 05:39:49,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 507 transitions. [2024-11-09 05:39:49,326 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 507 transitions. Word has length 127 [2024-11-09 05:39:49,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:39:49,327 INFO L471 AbstractCegarLoop]: Abstraction has 427 states and 507 transitions. [2024-11-09 05:39:49,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:39:49,327 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 507 transitions. [2024-11-09 05:39:49,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-09 05:39:49,328 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:39:49,328 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:49,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:39:49,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:39:49,529 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:39:49,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:39:49,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1229742955, now seen corresponding path program 1 times [2024-11-09 05:39:49,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:39:49,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1516053783] [2024-11-09 05:39:49,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:39:49,530 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 05:39:49,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:39:49,531 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:39:49,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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)] Waiting until timeout for monitored process [2024-11-09 05:39:50,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:39:50,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-09 05:39:50,194 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:39:50,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-09 05:39:50,625 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 33 treesize of output 21 [2024-11-09 05:39:50,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2024-11-09 05:39:50,691 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 05:39:50,839 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 05:39:53,162 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:39:53,162 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 52 [2024-11-09 05:39:53,295 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 0 case distinctions, treesize of input 64 treesize of output 66 [2024-11-09 05:39:53,707 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:39:53,708 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 128 treesize of output 93 [2024-11-09 05:39:53,971 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:39:53,971 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 106 treesize of output 102 [2024-11-09 05:39:54,368 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:39:54,368 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 145 treesize of output 73 [2024-11-09 05:39:54,528 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 115 proven. 9 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-09 05:39:54,528 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:39:54,787 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2024-11-09 05:39:54,788 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:39:54,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1516053783] [2024-11-09 05:39:54,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1516053783] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 05:39:54,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:39:54,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [17] total 21 [2024-11-09 05:39:54,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189685966] [2024-11-09 05:39:54,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:39:54,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:39:54,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:39:54,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:39:54,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=359, Unknown=1, NotChecked=0, Total=420 [2024-11-09 05:39:54,790 INFO L87 Difference]: Start difference. First operand 427 states and 507 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:39:55,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:39:55,475 INFO L93 Difference]: Finished difference Result 756 states and 903 transitions. [2024-11-09 05:39:55,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:39:55,476 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 128 [2024-11-09 05:39:55,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:39:55,478 INFO L225 Difference]: With dead ends: 756 [2024-11-09 05:39:55,478 INFO L226 Difference]: Without dead ends: 414 [2024-11-09 05:39:55,478 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 234 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=72, Invalid=479, Unknown=1, NotChecked=0, Total=552 [2024-11-09 05:39:55,479 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 33 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:39:55,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 287 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:39:55,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2024-11-09 05:39:55,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 400. [2024-11-09 05:39:55,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 357 states have (on average 1.1568627450980393) internal successors, (413), 357 states have internal predecessors, (413), 30 states have call successors, (30), 12 states have call predecessors, (30), 12 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-09 05:39:55,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 473 transitions. [2024-11-09 05:39:55,628 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 473 transitions. Word has length 128 [2024-11-09 05:39:55,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:39:55,628 INFO L471 AbstractCegarLoop]: Abstraction has 400 states and 473 transitions. [2024-11-09 05:39:55,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:39:55,628 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 473 transitions. [2024-11-09 05:39:55,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-09 05:39:55,629 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:39:55,630 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 05:39:55,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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)] Forceful destruction successful, exit code 0 [2024-11-09 05:39:55,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:39:55,830 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:39:55,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:39:55,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1372589305, now seen corresponding path program 1 times [2024-11-09 05:39:55,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:39:55,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1576201169] [2024-11-09 05:39:55,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:39:55,832 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 05:39:55,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:39:55,833 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:39:55,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 (44)] Waiting until timeout for monitored process [2024-11-09 05:39:56,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:39:56,491 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 05:39:56,494 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:39:56,506 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 05:39:56,544 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 28 treesize of output 16 [2024-11-09 05:39:56,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-09 05:39:56,581 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-09 05:39:56,581 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:39:56,581 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:39:56,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1576201169] [2024-11-09 05:39:56,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1576201169] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:39:56,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:39:56,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:39:56,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033832758] [2024-11-09 05:39:56,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:39:56,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:39:56,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:39:56,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:39:56,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:39:56,584 INFO L87 Difference]: Start difference. First operand 400 states and 473 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:39:58,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:39:58,817 INFO L93 Difference]: Finished difference Result 908 states and 1069 transitions. [2024-11-09 05:39:58,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:39:58,818 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 128 [2024-11-09 05:39:58,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:39:58,821 INFO L225 Difference]: With dead ends: 908 [2024-11-09 05:39:58,822 INFO L226 Difference]: Without dead ends: 593 [2024-11-09 05:39:58,823 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 124 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 05:39:58,823 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 64 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:39:58,823 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 326 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 05:39:58,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2024-11-09 05:39:58,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 397. [2024-11-09 05:39:58,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 354 states have (on average 1.1412429378531073) internal successors, (404), 354 states have internal predecessors, (404), 30 states have call successors, (30), 12 states have call predecessors, (30), 12 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-09 05:39:58,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 464 transitions. [2024-11-09 05:39:58,959 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 464 transitions. Word has length 128 [2024-11-09 05:39:58,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:39:58,959 INFO L471 AbstractCegarLoop]: Abstraction has 397 states and 464 transitions. [2024-11-09 05:39:58,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:39:58,960 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 464 transitions. [2024-11-09 05:39:58,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-09 05:39:58,961 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:39:58,961 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:39:58,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 (44)] Forceful destruction successful, exit code 0 [2024-11-09 05:39:59,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:39:59,161 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:39:59,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:39:59,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1716404040, now seen corresponding path program 1 times [2024-11-09 05:39:59,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:39:59,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1745725251] [2024-11-09 05:39:59,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:39:59,163 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 05:39:59,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:39:59,164 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:39:59,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:39:59,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:39:59,842 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-09 05:39:59,849 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:39:59,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-09 05:40:00,614 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 59 treesize of output 41 [2024-11-09 05:40:00,619 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:40:00,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 21 [2024-11-09 05:40:00,846 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 05:40:01,164 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 24 [2024-11-09 05:40:04,096 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:40:04,096 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 68 treesize of output 67 [2024-11-09 05:40:04,332 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 0 case distinctions, treesize of input 85 treesize of output 81 [2024-11-09 05:40:04,638 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:40:04,638 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 141 treesize of output 110 [2024-11-09 05:40:05,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 36 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 203 treesize of output 153 [2024-11-09 05:40:06,220 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:40:06,220 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 213 treesize of output 182 [2024-11-09 05:40:06,254 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 171 proven. 1 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-09 05:40:06,254 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:40:23,632 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:40:23,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1745725251] [2024-11-09 05:40:23,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1745725251] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:40:23,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1339178032] [2024-11-09 05:40:23,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:40:23,633 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:40:23,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:40:23,634 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:40:23,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (46)] Waiting until timeout for monitored process [2024-11-09 05:40:25,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:40:25,375 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-09 05:40:25,382 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:40:25,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-09 05:40:30,095 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:40:30,095 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 56 treesize of output 35 [2024-11-09 05:40:31,308 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:40:31,308 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 65 treesize of output 47 [2024-11-09 05:40:31,838 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:40:31,838 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 72 treesize of output 47 [2024-11-09 05:40:32,786 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:40:32,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 57 [2024-11-09 05:40:33,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 50 [2024-11-09 05:40:33,510 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:40:33,510 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 92 treesize of output 69 [2024-11-09 05:40:34,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 21 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 114 [2024-11-09 05:40:35,444 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:40:35,444 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 152 treesize of output 128 [2024-11-09 05:40:35,457 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 157 proven. 10 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-09 05:40:35,457 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:40:49,494 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2024-11-09 05:40:49,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1339178032] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 05:40:49,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 05:40:49,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [20, 20] total 55 [2024-11-09 05:40:49,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92028172] [2024-11-09 05:40:49,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:40:49,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 05:40:49,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:40:49,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 05:40:49,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=524, Invalid=4587, Unknown=1, NotChecked=0, Total=5112 [2024-11-09 05:40:49,497 INFO L87 Difference]: Start difference. First operand 397 states and 464 transitions. Second operand has 17 states, 17 states have (on average 4.176470588235294) internal successors, (71), 17 states have internal predecessors, (71), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:41:01,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:41:01,583 INFO L93 Difference]: Finished difference Result 406 states and 474 transitions. [2024-11-09 05:41:01,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 05:41:01,584 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.176470588235294) internal successors, (71), 17 states have internal predecessors, (71), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 129 [2024-11-09 05:41:01,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:41:01,586 INFO L225 Difference]: With dead ends: 406 [2024-11-09 05:41:01,586 INFO L226 Difference]: Without dead ends: 404 [2024-11-09 05:41:01,587 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 347 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1950 ImplicationChecksByTransitivity, 47.1s TimeCoverageRelationStatistics Valid=737, Invalid=5742, Unknown=1, NotChecked=0, Total=6480 [2024-11-09 05:41:01,587 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 134 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:41:01,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 512 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2024-11-09 05:41:01,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2024-11-09 05:41:01,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 404. [2024-11-09 05:41:01,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 361 states have (on average 1.1412742382271468) internal successors, (412), 361 states have internal predecessors, (412), 30 states have call successors, (30), 12 states have call predecessors, (30), 12 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-09 05:41:01,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 472 transitions. [2024-11-09 05:41:01,715 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 472 transitions. Word has length 129 [2024-11-09 05:41:01,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:41:01,715 INFO L471 AbstractCegarLoop]: Abstraction has 404 states and 472 transitions. [2024-11-09 05:41:01,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.176470588235294) internal successors, (71), 17 states have internal predecessors, (71), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:41:01,715 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 472 transitions. [2024-11-09 05:41:01,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-09 05:41:01,716 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:41:01,716 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:41:01,727 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (46)] Ended with exit code 0 [2024-11-09 05:41:01,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:41:02,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:41:02,117 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:41:02,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:41:02,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1718251082, now seen corresponding path program 1 times [2024-11-09 05:41:02,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:41:02,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1728429161] [2024-11-09 05:41:02,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:02,118 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 05:41:02,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:41:02,119 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:41:02,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:41:02,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:02,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-09 05:41:02,792 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:41:02,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-09 05:41:03,593 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 59 treesize of output 41 [2024-11-09 05:41:03,599 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:41:03,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 21 [2024-11-09 05:41:03,841 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 05:41:03,989 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 05:41:08,841 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:41:08,841 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 72 treesize of output 71 [2024-11-09 05:41:09,090 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 0 case distinctions, treesize of input 89 treesize of output 85 [2024-11-09 05:41:09,355 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:41:09,355 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 145 treesize of output 114 [2024-11-09 05:41:09,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 36 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 203 treesize of output 183 [2024-11-09 05:41:10,648 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:41:10,649 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 245 treesize of output 220 [2024-11-09 05:41:10,695 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 151 proven. 5 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-09 05:41:10,695 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:41:25,809 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:41:25,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1728429161] [2024-11-09 05:41:25,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1728429161] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:41:25,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2035118988] [2024-11-09 05:41:25,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:25,810 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:41:25,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:41:25,811 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:41:25,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (48)] Waiting until timeout for monitored process [2024-11-09 05:41:28,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:28,070 INFO L255 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-09 05:41:28,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:41:28,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-09 05:41:35,873 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:41:35,873 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 56 treesize of output 35 [2024-11-09 05:41:45,211 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:41:45,212 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 65 treesize of output 47 [2024-11-09 05:41:47,802 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:41:47,803 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 66 treesize of output 63 [2024-11-09 05:41:51,311 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:41:51,312 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 86 treesize of output 74 [2024-11-09 05:41:52,149 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 0 case distinctions, treesize of input 75 treesize of output 71 [2024-11-09 05:41:53,547 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:41:53,548 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 122 treesize of output 105 [2024-11-09 05:41:54,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 36 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 140 [2024-11-09 05:41:54,853 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:41:54,853 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 168 treesize of output 112 [2024-11-09 05:41:55,765 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 161 proven. 14 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-09 05:41:55,765 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:43:09,604 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 58 proven. 9 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-09 05:43:09,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2035118988] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:43:09,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127357042] [2024-11-09 05:43:09,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:43:09,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:43:09,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:43:09,608 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:43:09,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-09 05:43:10,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:43:10,078 INFO L255 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-09 05:43:10,097 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:43:10,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-09 05:43:12,743 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:43:12,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 21 [2024-11-09 05:43:16,148 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 29 treesize of output 29 [2024-11-09 05:43:18,827 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:43:18,827 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 05:43:21,291 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:43:21,292 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 84 treesize of output 71 [2024-11-09 05:43:23,963 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:43:23,964 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 126 treesize of output 94 [2024-11-09 05:43:28,692 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:43:28,693 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 113 treesize of output 106 [2024-11-09 05:43:42,849 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 124 proven. 28 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-09 05:43:42,849 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:44:21,983 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 148 treesize of output 112 [2024-11-09 05:44:22,090 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2024-11-09 05:44:22,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127357042] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 05:44:22,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2024-11-09 05:44:22,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [19, 21, 17, 23] total 81 [2024-11-09 05:44:22,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242878558] [2024-11-09 05:44:22,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:44:22,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 05:44:22,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:44:22,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 05:44:22,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=728, Invalid=7085, Unknown=19, NotChecked=0, Total=7832 [2024-11-09 05:44:22,095 INFO L87 Difference]: Start difference. First operand 404 states and 472 transitions. Second operand has 16 states, 16 states have (on average 4.4375) internal successors, (71), 16 states have internal predecessors, (71), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:44:34,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:44:39,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:44:41,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:44:44,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:44:46,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:44:54,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:44:56,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:44:58,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:45:02,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:45:04,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:45:07,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:45:08,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:45:10,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:45:12,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:45:34,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:45:34,274 INFO L93 Difference]: Finished difference Result 734 states and 859 transitions. [2024-11-09 05:45:34,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-09 05:45:34,278 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.4375) internal successors, (71), 16 states have internal predecessors, (71), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 129 [2024-11-09 05:45:34,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:45:34,280 INFO L225 Difference]: With dead ends: 734 [2024-11-09 05:45:34,280 INFO L226 Difference]: Without dead ends: 539 [2024-11-09 05:45:34,283 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 585 SyntacticMatches, 2 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3540 ImplicationChecksByTransitivity, 212.1s TimeCoverageRelationStatistics Valid=968, Invalid=9315, Unknown=19, NotChecked=0, Total=10302 [2024-11-09 05:45:34,284 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 206 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 16 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:45:34,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 968 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 836 Invalid, 9 Unknown, 0 Unchecked, 39.2s Time] [2024-11-09 05:45:34,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2024-11-09 05:45:34,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 427. [2024-11-09 05:45:34,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 384 states have (on average 1.1432291666666667) internal successors, (439), 384 states have internal predecessors, (439), 30 states have call successors, (30), 12 states have call predecessors, (30), 12 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-09 05:45:34,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 499 transitions. [2024-11-09 05:45:34,390 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 499 transitions. Word has length 129 [2024-11-09 05:45:34,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:45:34,390 INFO L471 AbstractCegarLoop]: Abstraction has 427 states and 499 transitions. [2024-11-09 05:45:34,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.4375) internal successors, (71), 16 states have internal predecessors, (71), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:45:34,391 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 499 transitions. [2024-11-09 05:45:34,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-09 05:45:34,391 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:45:34,392 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:45:34,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-11-09 05:45:34,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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)] Forceful destruction successful, exit code 0 [2024-11-09 05:45:34,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (48)] Forceful destruction successful, exit code 0 [2024-11-09 05:45:34,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 05:45:34,993 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:45:34,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:45:34,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1898504886, now seen corresponding path program 1 times [2024-11-09 05:45:34,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:45:34,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [233472936] [2024-11-09 05:45:34,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:45:34,994 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 05:45:34,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:45:34,997 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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 05:45:34,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14746287-e88d-45f8-a271-e2e9b6074256/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)] Waiting until timeout for monitored process [2024-11-09 05:45:35,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:45:35,622 INFO L255 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-09 05:45:35,628 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:45:35,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-09 05:45:36,259 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 59 treesize of output 41 [2024-11-09 05:45:36,263 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:45:36,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 21 [2024-11-09 05:45:36,439 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 05:45:36,589 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 30 treesize of output 1 [2024-11-09 05:45:37,116 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 48 treesize of output 41 [2024-11-09 05:45:37,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 55 [2024-11-09 05:45:37,500 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:45:37,500 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 124 treesize of output 93 [2024-11-09 05:45:37,842 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:45:37,842 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 171 treesize of output 136 [2024-11-09 05:45:40,295 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:45:40,295 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 185 treesize of output 163 [2024-11-09 05:45:47,231 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:45:47,231 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 212 treesize of output 112 [2024-11-09 05:45:47,665 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 139 proven. 1 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-09 05:45:47,665 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:45:55,050 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2024-11-09 05:45:55,050 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:45:55,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [233472936] [2024-11-09 05:45:55,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [233472936] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 05:45:55,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:45:55,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [26] total 42 [2024-11-09 05:45:55,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326052299] [2024-11-09 05:45:55,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:45:55,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 05:45:55,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:45:55,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 05:45:55,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=1451, Unknown=1, NotChecked=0, Total=1722 [2024-11-09 05:45:55,052 INFO L87 Difference]: Start difference. First operand 427 states and 499 transitions. Second operand has 17 states, 17 states have (on average 4.176470588235294) internal successors, (71), 17 states have internal predecessors, (71), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5)