./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3a1b0d13ed57f2c287b7c5c279f90464e92ac535bf47194a470e4f6c38d6c07a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:23:11,132 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:23:11,215 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 05:23:11,221 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:23:11,221 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:23:11,259 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:23:11,259 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:23:11,259 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:23:11,260 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:23:11,260 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:23:11,260 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:23:11,260 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:23:11,260 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:23:11,262 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 05:23:11,263 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:23:11,263 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:23:11,263 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 05:23:11,263 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 05:23:11,263 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:23:11,263 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 05:23:11,263 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 05:23:11,264 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 05:23:11,264 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:23:11,264 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 05:23:11,264 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 05:23:11,264 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 05:23:11,264 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 05:23:11,264 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:23:11,265 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 05:23:11,265 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:23:11,265 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 05:23:11,265 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:23:11,265 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 05:23:11,265 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 05:23:11,265 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:23:11,265 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:23:11,265 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:23:11,266 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:23:11,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:23:11,266 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:23:11,266 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:23:11,266 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 05:23:11,266 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 05:23:11,267 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 05:23:11,267 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:23:11,267 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:23:11,268 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 05:23:11,268 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a1b0d13ed57f2c287b7c5c279f90464e92ac535bf47194a470e4f6c38d6c07a [2024-11-14 05:23:11,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:23:11,669 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:23:11,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:23:11,676 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:23:11,676 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:23:11,678 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c Unable to find full path for "g++" [2024-11-14 05:23:13,715 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:23:14,133 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:23:14,135 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c [2024-11-14 05:23:14,147 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/data/85453187d/f27807aa4e824b4eb87057704c834f56/FLAG9bcbc825a [2024-11-14 05:23:14,163 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/data/85453187d/f27807aa4e824b4eb87057704c834f56 [2024-11-14 05:23:14,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:23:14,168 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:23:14,169 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:23:14,170 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:23:14,175 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:23:14,176 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:23:14" (1/1) ... [2024-11-14 05:23:14,177 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5055435a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:14, skipping insertion in model container [2024-11-14 05:23:14,178 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:23:14" (1/1) ... [2024-11-14 05:23:14,204 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:23:14,444 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_aa413c62-b6e2-42ed-b817-a847f929554d/sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c[1995,2008] [2024-11-14 05:23:14,451 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_aa413c62-b6e2-42ed-b817-a847f929554d/sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c[2364,2377] [2024-11-14 05:23:14,541 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:23:14,553 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:23:14,568 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_aa413c62-b6e2-42ed-b817-a847f929554d/sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c[1995,2008] [2024-11-14 05:23:14,570 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_aa413c62-b6e2-42ed-b817-a847f929554d/sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c[2364,2377] [2024-11-14 05:23:14,602 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:23:14,620 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:23:14,621 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:14 WrapperNode [2024-11-14 05:23:14,621 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:23:14,622 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:23:14,622 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:23:14,622 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:23:14,629 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:14" (1/1) ... [2024-11-14 05:23:14,643 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:14" (1/1) ... [2024-11-14 05:23:14,685 INFO L138 Inliner]: procedures = 27, calls = 20, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 77 [2024-11-14 05:23:14,685 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:23:14,686 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:23:14,686 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:23:14,686 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:23:14,696 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:14" (1/1) ... [2024-11-14 05:23:14,697 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:14" (1/1) ... [2024-11-14 05:23:14,703 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:14" (1/1) ... [2024-11-14 05:23:14,704 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:14" (1/1) ... [2024-11-14 05:23:14,719 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:14" (1/1) ... [2024-11-14 05:23:14,728 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:14" (1/1) ... [2024-11-14 05:23:14,730 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:14" (1/1) ... [2024-11-14 05:23:14,731 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:14" (1/1) ... [2024-11-14 05:23:14,738 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:23:14,739 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:23:14,739 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:23:14,739 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:23:14,740 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:14" (1/1) ... [2024-11-14 05:23:14,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:23:14,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:23:14,781 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:23:14,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:23:14,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 05:23:14,814 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-11-14 05:23:14,815 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-11-14 05:23:14,815 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2024-11-14 05:23:14,815 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2024-11-14 05:23:14,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 05:23:14,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:23:14,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:23:14,816 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-14 05:23:14,816 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-14 05:23:14,928 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:23:14,930 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:23:15,416 INFO L? ?]: Removed 60 outVars from TransFormulas that were not future-live. [2024-11-14 05:23:15,416 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:23:15,642 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:23:15,642 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-14 05:23:15,642 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:23:15 BoogieIcfgContainer [2024-11-14 05:23:15,642 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:23:15,645 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:23:15,645 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:23:15,649 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:23:15,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:23:14" (1/3) ... [2024-11-14 05:23:15,650 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d5fa39a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:23:15, skipping insertion in model container [2024-11-14 05:23:15,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:14" (2/3) ... [2024-11-14 05:23:15,651 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d5fa39a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:23:15, skipping insertion in model container [2024-11-14 05:23:15,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:23:15" (3/3) ... [2024-11-14 05:23:15,653 INFO L112 eAbstractionObserver]: Analyzing ICFG square_8+soft_float_4-3a.c.cil.c [2024-11-14 05:23:15,670 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:23:15,674 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG square_8+soft_float_4-3a.c.cil.c that has 4 procedures, 51 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-14 05:23:15,736 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:23:15,749 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;@3df8d6da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:23:15,750 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-14 05:23:15,755 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 36 states have (on average 1.4722222222222223) internal successors, (53), 38 states have internal predecessors, (53), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-14 05:23:15,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-14 05:23:15,762 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:23:15,762 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-14 05:23:15,763 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:23:15,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:23:15,769 INFO L85 PathProgramCache]: Analyzing trace with hash 9245170, now seen corresponding path program 1 times [2024-11-14 05:23:15,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:23:15,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714267141] [2024-11-14 05:23:15,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:23:15,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:23:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 05:23:15,889 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-14 05:23:15,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 05:23:15,925 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-14 05:23:15,927 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-14 05:23:15,929 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-11-14 05:23:15,931 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-14 05:23:15,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 05:23:15,940 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-14 05:23:15,957 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 05:23:15,961 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 05:23:15 BoogieIcfgContainer [2024-11-14 05:23:15,961 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 05:23:15,962 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 05:23:15,962 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 05:23:15,962 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 05:23:15,967 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:23:15" (3/4) ... [2024-11-14 05:23:15,970 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-14 05:23:15,971 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 05:23:15,975 INFO L158 Benchmark]: Toolchain (without parser) took 1804.52ms. Allocated memory is still 117.4MB. Free memory was 91.9MB in the beginning and 77.5MB in the end (delta: 14.4MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. [2024-11-14 05:23:15,975 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 83.9MB. Free memory is still 41.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:23:15,976 INFO L158 Benchmark]: CACSL2BoogieTranslator took 452.02ms. Allocated memory is still 117.4MB. Free memory was 91.5MB in the beginning and 77.4MB in the end (delta: 14.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 05:23:15,976 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.45ms. Allocated memory is still 117.4MB. Free memory was 77.4MB in the beginning and 76.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:23:15,977 INFO L158 Benchmark]: Boogie Preprocessor took 51.99ms. Allocated memory is still 117.4MB. Free memory was 76.2MB in the beginning and 74.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:23:15,977 INFO L158 Benchmark]: RCFGBuilder took 903.78ms. Allocated memory is still 117.4MB. Free memory was 74.9MB in the beginning and 90.7MB in the end (delta: -15.8MB). Peak memory consumption was 45.9MB. Max. memory is 16.1GB. [2024-11-14 05:23:15,978 INFO L158 Benchmark]: TraceAbstraction took 316.15ms. Allocated memory is still 117.4MB. Free memory was 90.0MB in the beginning and 77.5MB in the end (delta: 12.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 05:23:15,978 INFO L158 Benchmark]: Witness Printer took 9.24ms. Allocated memory is still 117.4MB. Free memory is still 77.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:23:15,980 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 83.9MB. Free memory is still 41.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 452.02ms. Allocated memory is still 117.4MB. Free memory was 91.5MB in the beginning and 77.4MB in the end (delta: 14.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.45ms. Allocated memory is still 117.4MB. Free memory was 77.4MB in the beginning and 76.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 51.99ms. Allocated memory is still 117.4MB. Free memory was 76.2MB in the beginning and 74.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 903.78ms. Allocated memory is still 117.4MB. Free memory was 74.9MB in the beginning and 90.7MB in the end (delta: -15.8MB). Peak memory consumption was 45.9MB. Max. memory is 16.1GB. * TraceAbstraction took 316.15ms. Allocated memory is still 117.4MB. Free memory was 90.0MB in the beginning and 77.5MB in the end (delta: 12.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Witness Printer took 9.24ms. Allocated memory is still 117.4MB. Free memory is still 77.5MB. 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: 48]: 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 someBinaryFLOATComparisonOperation at line 40, overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L309] COND TRUE __VERIFIER_nondet_int() [L310] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L47] COND TRUE !(result >= 0.0f && result < 1.5f) [L48] reach_error() - UnprovableResult [Line: 60]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 51 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, 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=51occurred 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: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 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 [2024-11-14 05:23:16,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3a1b0d13ed57f2c287b7c5c279f90464e92ac535bf47194a470e4f6c38d6c07a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:23:19,209 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:23:19,333 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2024-11-14 05:23:19,339 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:23:19,339 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:23:19,414 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:23:19,415 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:23:19,420 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:23:19,421 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:23:19,421 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:23:19,421 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:23:19,421 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:23:19,422 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:23:19,422 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:23:19,422 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:23:19,422 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:23:19,422 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:23:19,423 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 05:23:19,423 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 05:23:19,423 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 05:23:19,423 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:23:19,423 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 05:23:19,429 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:23:19,430 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 05:23:19,430 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 05:23:19,430 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-14 05:23:19,430 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:23:19,430 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-14 05:23:19,430 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 05:23:19,430 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 05:23:19,430 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:23:19,431 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:23:19,431 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-14 05:23:19,431 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:23:19,431 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:23:19,431 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:23:19,431 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:23:19,431 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:23:19,431 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 05:23:19,431 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-14 05:23:19,432 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-14 05:23:19,432 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:23:19,432 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:23:19,432 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a1b0d13ed57f2c287b7c5c279f90464e92ac535bf47194a470e4f6c38d6c07a [2024-11-14 05:23:19,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:23:19,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:23:19,834 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:23:19,836 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:23:19,836 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:23:19,838 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c Unable to find full path for "g++" [2024-11-14 05:23:22,270 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:23:22,598 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:23:22,599 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c [2024-11-14 05:23:22,617 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/data/f527a1bbd/4ab070220ddb4e04b241d9999c161a7e/FLAG2e7ca7d0e [2024-11-14 05:23:22,648 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/data/f527a1bbd/4ab070220ddb4e04b241d9999c161a7e [2024-11-14 05:23:22,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:23:22,655 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:23:22,657 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:23:22,657 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:23:22,663 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:23:22,664 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:23:22" (1/1) ... [2024-11-14 05:23:22,668 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62277546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:22, skipping insertion in model container [2024-11-14 05:23:22,668 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:23:22" (1/1) ... [2024-11-14 05:23:22,706 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:23:22,943 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_aa413c62-b6e2-42ed-b817-a847f929554d/sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c[1995,2008] [2024-11-14 05:23:22,953 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_aa413c62-b6e2-42ed-b817-a847f929554d/sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c[2364,2377] [2024-11-14 05:23:23,047 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:23:23,078 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:23:23,100 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_aa413c62-b6e2-42ed-b817-a847f929554d/sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c[1995,2008] [2024-11-14 05:23:23,104 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_aa413c62-b6e2-42ed-b817-a847f929554d/sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c[2364,2377] [2024-11-14 05:23:23,158 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:23:23,181 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:23:23,181 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:23 WrapperNode [2024-11-14 05:23:23,182 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:23:23,183 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:23:23,183 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:23:23,183 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:23:23,189 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:23" (1/1) ... [2024-11-14 05:23:23,201 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:23" (1/1) ... [2024-11-14 05:23:23,223 INFO L138 Inliner]: procedures = 28, calls = 20, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2024-11-14 05:23:23,223 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:23:23,224 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:23:23,224 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:23:23,224 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:23:23,233 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:23" (1/1) ... [2024-11-14 05:23:23,233 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:23" (1/1) ... [2024-11-14 05:23:23,236 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:23" (1/1) ... [2024-11-14 05:23:23,237 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:23" (1/1) ... [2024-11-14 05:23:23,247 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:23" (1/1) ... [2024-11-14 05:23:23,252 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:23" (1/1) ... [2024-11-14 05:23:23,256 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:23" (1/1) ... [2024-11-14 05:23:23,257 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:23" (1/1) ... [2024-11-14 05:23:23,264 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:23:23,265 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:23:23,265 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:23:23,265 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:23:23,266 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:23" (1/1) ... [2024-11-14 05:23:23,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:23:23,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:23:23,310 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:23:23,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:23:23,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 05:23:23,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-14 05:23:23,345 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-11-14 05:23:23,345 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-11-14 05:23:23,345 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2024-11-14 05:23:23,346 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2024-11-14 05:23:23,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:23:23,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:23:23,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-14 05:23:23,346 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-14 05:23:23,452 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:23:23,454 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:23:26,122 INFO L? ?]: Removed 44 outVars from TransFormulas that were not future-live. [2024-11-14 05:23:26,123 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:23:26,140 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:23:26,140 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-14 05:23:26,141 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:23:26 BoogieIcfgContainer [2024-11-14 05:23:26,141 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:23:26,144 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:23:26,144 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:23:26,151 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:23:26,151 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:23:22" (1/3) ... [2024-11-14 05:23:26,152 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e8e81d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:23:26, skipping insertion in model container [2024-11-14 05:23:26,152 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:23" (2/3) ... [2024-11-14 05:23:26,152 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e8e81d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:23:26, skipping insertion in model container [2024-11-14 05:23:26,152 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:23:26" (3/3) ... [2024-11-14 05:23:26,154 INFO L112 eAbstractionObserver]: Analyzing ICFG square_8+soft_float_4-3a.c.cil.c [2024-11-14 05:23:26,174 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:23:26,176 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG square_8+soft_float_4-3a.c.cil.c that has 4 procedures, 63 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-14 05:23:26,262 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:23:26,278 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;@35125a96, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:23:26,279 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-14 05:23:26,286 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 50 states have internal predecessors, (71), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-14 05:23:26,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-14 05:23:26,295 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:23:26,296 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:23:26,297 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:23:26,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:23:26,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1912677092, now seen corresponding path program 1 times [2024-11-14 05:23:26,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:23:26,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [516841809] [2024-11-14 05:23:26,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:23:26,320 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 [2024-11-14 05:23:26,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:23:26,323 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:23:26,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-14 05:23:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:23:26,894 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-14 05:23:26,897 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:23:26,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:23:26,915 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:23:26,916 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:23:26,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [516841809] [2024-11-14 05:23:26,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [516841809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:23:26,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:23:26,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:23:26,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552589281] [2024-11-14 05:23:26,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:23:26,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-14 05:23:26,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:23:26,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-14 05:23:26,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 05:23:26,970 INFO L87 Difference]: Start difference. First operand has 63 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 50 states have internal predecessors, (71), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:23:27,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:23:27,002 INFO L93 Difference]: Finished difference Result 121 states and 179 transitions. [2024-11-14 05:23:27,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-14 05:23:27,004 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-14 05:23:27,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:23:27,013 INFO L225 Difference]: With dead ends: 121 [2024-11-14 05:23:27,013 INFO L226 Difference]: Without dead ends: 56 [2024-11-14 05:23:27,017 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 05:23:27,021 INFO L432 NwaCegarLoop]: 82 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, 82 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 [2024-11-14 05:23:27,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 05:23:27,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-14 05:23:27,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-11-14 05:23:27,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 44 states have internal predecessors, (57), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-14 05:23:27,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 74 transitions. [2024-11-14 05:23:27,068 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 74 transitions. Word has length 7 [2024-11-14 05:23:27,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:23:27,069 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 74 transitions. [2024-11-14 05:23:27,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:23:27,070 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 74 transitions. [2024-11-14 05:23:27,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-14 05:23:27,070 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:23:27,070 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:23:27,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-11-14 05:23:27,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:23:27,271 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:23:27,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:23:27,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1912736674, now seen corresponding path program 1 times [2024-11-14 05:23:27,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:23:27,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [716136834] [2024-11-14 05:23:27,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:23:27,273 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 [2024-11-14 05:23:27,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:23:27,276 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:23:27,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-14 05:24:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:24:29,439 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:24:29,444 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:24:44,831 WARN L851 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (= (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) |c_ULTIMATE.start_main1_~result~0#1|)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2024-11-14 05:25:18,449 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)))) (or (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))))) (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (_ +zero 8 24))))))) is different from false [2024-11-14 05:25:20,511 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)))) (or (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))))) (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (_ +zero 8 24))))))) is different from true [2024-11-14 05:25:20,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:25:20,512 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:25:20,512 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:25:20,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [716136834] [2024-11-14 05:25:20,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [716136834] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:25:20,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:25:20,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 05:25:20,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424077430] [2024-11-14 05:25:20,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:25:20,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 05:25:20,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:25:20,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 05:25:20,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=12, Unknown=3, NotChecked=14, Total=42 [2024-11-14 05:25:20,518 INFO L87 Difference]: Start difference. First operand 56 states and 74 transitions. Second operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:25:22,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:25:24,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:25:26,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:25:27,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:25:27,392 INFO L93 Difference]: Finished difference Result 56 states and 74 transitions. [2024-11-14 05:25:27,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 05:25:27,393 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-14 05:25:27,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:25:27,395 INFO L225 Difference]: With dead ends: 56 [2024-11-14 05:25:27,395 INFO L226 Difference]: Without dead ends: 51 [2024-11-14 05:25:27,395 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=13, Invalid=12, Unknown=3, NotChecked=14, Total=42 [2024-11-14 05:25:27,396 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 68 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 148 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2024-11-14 05:25:27,397 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 171 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 3 Unknown, 148 Unchecked, 6.8s Time] [2024-11-14 05:25:27,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-14 05:25:27,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-14 05:25:27,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 38 states have (on average 1.368421052631579) internal successors, (52), 39 states have internal predecessors, (52), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-14 05:25:27,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 69 transitions. [2024-11-14 05:25:27,407 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 69 transitions. Word has length 7 [2024-11-14 05:25:27,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:25:27,407 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 69 transitions. [2024-11-14 05:25:27,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:25:27,408 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 69 transitions. [2024-11-14 05:25:27,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-14 05:25:27,409 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:25:27,409 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:25:27,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-11-14 05:25:27,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:25:27,610 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:25:27,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:25:27,611 INFO L85 PathProgramCache]: Analyzing trace with hash -873152889, now seen corresponding path program 1 times [2024-11-14 05:25:27,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:25:27,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1463127272] [2024-11-14 05:25:27,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:25:27,612 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 [2024-11-14 05:25:27,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:25:27,614 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:25:27,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-14 05:25:27,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:25:27,710 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:25:27,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:25:28,645 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 05:25:28,645 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:25:28,646 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:25:28,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1463127272] [2024-11-14 05:25:28,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1463127272] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:25:28,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:25:28,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-14 05:25:28,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105879081] [2024-11-14 05:25:28,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:25:28,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 05:25:28,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:25:28,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 05:25:28,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-14 05:25:28,653 INFO L87 Difference]: Start difference. First operand 51 states and 69 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:25:29,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:25:29,353 INFO L93 Difference]: Finished difference Result 97 states and 132 transitions. [2024-11-14 05:25:29,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 05:25:29,355 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 32 [2024-11-14 05:25:29,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:25:29,360 INFO L225 Difference]: With dead ends: 97 [2024-11-14 05:25:29,360 INFO L226 Difference]: Without dead ends: 69 [2024-11-14 05:25:29,361 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-14 05:25:29,362 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 13 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 05:25:29,363 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 433 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 05:25:29,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-14 05:25:29,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 62. [2024-11-14 05:25:29,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 46 states have (on average 1.3043478260869565) internal successors, (60), 48 states have internal predecessors, (60), 10 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-14 05:25:29,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 82 transitions. [2024-11-14 05:25:29,391 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 82 transitions. Word has length 32 [2024-11-14 05:25:29,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:25:29,392 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 82 transitions. [2024-11-14 05:25:29,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:25:29,393 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 82 transitions. [2024-11-14 05:25:29,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-14 05:25:29,394 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:25:29,394 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-11-14 05:25:29,399 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-11-14 05:25:29,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:25:29,595 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:25:29,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:25:29,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1027059241, now seen corresponding path program 1 times [2024-11-14 05:25:29,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:25:29,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182896482] [2024-11-14 05:25:29,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:25:29,597 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 [2024-11-14 05:25:29,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:25:29,602 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:25:29,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-14 05:25:29,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:25:29,694 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 05:25:29,697 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:25:30,819 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 05:25:30,820 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:25:31,477 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 05:25:31,478 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:25:31,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182896482] [2024-11-14 05:25:31,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [182896482] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:25:31,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1133562537] [2024-11-14 05:25:31,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:25:31,478 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:25:31,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:25:31,491 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:25:31,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-14 05:25:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:25:31,612 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 05:25:31,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:25:31,924 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 05:25:31,924 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:25:32,358 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 05:25:32,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1133562537] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:25:32,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378405028] [2024-11-14 05:25:32,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:25:32,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:25:32,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:25:32,362 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:25:32,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-14 05:25:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:25:32,436 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 05:25:32,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:25:32,691 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 05:25:32,691 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:25:33,213 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 05:25:33,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378405028] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:25:33,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:25:33,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 9 [2024-11-14 05:25:33,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106587696] [2024-11-14 05:25:33,214 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:25:33,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 05:25:33,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:25:33,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 05:25:33,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-14 05:25:33,217 INFO L87 Difference]: Start difference. First operand 62 states and 82 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 05:25:34,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:25:34,351 INFO L93 Difference]: Finished difference Result 116 states and 154 transitions. [2024-11-14 05:25:34,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 05:25:34,352 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2024-11-14 05:25:34,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:25:34,354 INFO L225 Difference]: With dead ends: 116 [2024-11-14 05:25:34,356 INFO L226 Difference]: Without dead ends: 88 [2024-11-14 05:25:34,356 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-14 05:25:34,357 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 15 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:25:34,358 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 493 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 05:25:34,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-14 05:25:34,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 72. [2024-11-14 05:25:34,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 53 states have (on average 1.2830188679245282) internal successors, (68), 55 states have internal predecessors, (68), 12 states have call successors, (12), 5 states have call predecessors, (12), 6 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2024-11-14 05:25:34,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 95 transitions. [2024-11-14 05:25:34,388 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 95 transitions. Word has length 36 [2024-11-14 05:25:34,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:25:34,388 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 95 transitions. [2024-11-14 05:25:34,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 05:25:34,391 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 95 transitions. [2024-11-14 05:25:34,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-14 05:25:34,395 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:25:34,395 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2024-11-14 05:25:34,398 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2024-11-14 05:25:34,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-14 05:25:34,799 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-11-14 05:25:34,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:25:34,997 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:25:34,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:25:34,998 INFO L85 PathProgramCache]: Analyzing trace with hash 56288294, now seen corresponding path program 1 times [2024-11-14 05:25:34,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:25:34,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1290927119] [2024-11-14 05:25:34,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:25:34,999 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 [2024-11-14 05:25:34,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:25:35,006 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:25:35,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-11-14 05:25:35,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:25:35,086 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:25:35,088 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:25:36,046 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 05:25:36,046 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:25:36,634 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 05:25:36,635 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:25:36,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1290927119] [2024-11-14 05:25:36,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1290927119] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:25:36,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [222243128] [2024-11-14 05:25:36,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:25:36,635 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:25:36,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:25:36,640 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:25:36,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2024-11-14 05:25:36,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:25:36,770 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 05:25:36,772 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:25:37,966 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 05:25:37,966 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:25:37,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [222243128] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:25:37,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-14 05:25:37,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8, 8] total 12 [2024-11-14 05:25:37,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075058222] [2024-11-14 05:25:37,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:25:37,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 05:25:37,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:25:37,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 05:25:37,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-14 05:25:37,970 INFO L87 Difference]: Start difference. First operand 72 states and 95 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-14 05:25:39,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:25:39,470 INFO L93 Difference]: Finished difference Result 109 states and 144 transitions. [2024-11-14 05:25:39,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 05:25:39,473 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2024-11-14 05:25:39,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:25:39,475 INFO L225 Difference]: With dead ends: 109 [2024-11-14 05:25:39,475 INFO L226 Difference]: Without dead ends: 86 [2024-11-14 05:25:39,475 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-14 05:25:39,479 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 13 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:25:39,480 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 517 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-14 05:25:39,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-14 05:25:39,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 80. [2024-11-14 05:25:39,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 59 states have (on average 1.271186440677966) internal successors, (75), 61 states have internal predecessors, (75), 13 states have call successors, (13), 6 states have call predecessors, (13), 7 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) [2024-11-14 05:25:39,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 104 transitions. [2024-11-14 05:25:39,502 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 104 transitions. Word has length 40 [2024-11-14 05:25:39,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:25:39,502 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 104 transitions. [2024-11-14 05:25:39,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-14 05:25:39,506 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 104 transitions. [2024-11-14 05:25:39,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-14 05:25:39,507 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:25:39,508 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-11-14 05:25:39,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2024-11-14 05:25:39,712 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-11-14 05:25:39,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:25:39,909 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:25:39,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:25:39,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1627612665, now seen corresponding path program 2 times [2024-11-14 05:25:39,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:25:39,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [223443603] [2024-11-14 05:25:39,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 05:25:39,911 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 [2024-11-14 05:25:39,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:25:39,913 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:25:39,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-11-14 05:25:39,979 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-14 05:25:39,979 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:25:39,981 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 05:25:39,984 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:25:41,972 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-14 05:25:41,974 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:25:41,974 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:25:41,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [223443603] [2024-11-14 05:25:41,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [223443603] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:25:41,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:25:41,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-14 05:25:41,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010456954] [2024-11-14 05:25:41,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:25:41,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-14 05:25:41,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:25:41,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-14 05:25:41,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-14 05:25:41,978 INFO L87 Difference]: Start difference. First operand 80 states and 104 transitions. Second operand has 12 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:25:45,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:25:45,287 INFO L93 Difference]: Finished difference Result 155 states and 205 transitions. [2024-11-14 05:25:45,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-14 05:25:45,288 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2024-11-14 05:25:45,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:25:45,290 INFO L225 Difference]: With dead ends: 155 [2024-11-14 05:25:45,290 INFO L226 Difference]: Without dead ends: 123 [2024-11-14 05:25:45,291 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-11-14 05:25:45,292 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 38 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:25:45,293 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 1011 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-14 05:25:45,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-14 05:25:45,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 113. [2024-11-14 05:25:45,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 83 states have (on average 1.2530120481927711) internal successors, (104), 86 states have internal predecessors, (104), 18 states have call successors, (18), 9 states have call predecessors, (18), 11 states have return successors, (25), 17 states have call predecessors, (25), 17 states have call successors, (25) [2024-11-14 05:25:45,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 147 transitions. [2024-11-14 05:25:45,332 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 147 transitions. Word has length 40 [2024-11-14 05:25:45,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:25:45,332 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 147 transitions. [2024-11-14 05:25:45,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:25:45,335 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 147 transitions. [2024-11-14 05:25:45,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-14 05:25:45,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:25:45,337 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-11-14 05:25:45,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2024-11-14 05:25:45,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:25:45,541 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:25:45,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:25:45,541 INFO L85 PathProgramCache]: Analyzing trace with hash -104180661, now seen corresponding path program 1 times [2024-11-14 05:25:45,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:25:45,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1208603382] [2024-11-14 05:25:45,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:25:45,542 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 [2024-11-14 05:25:45,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:25:45,544 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:25:45,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-11-14 05:25:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:25:45,626 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-14 05:25:45,629 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:25:46,651 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 05:25:46,652 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:25:47,930 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-14 05:25:47,931 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:25:47,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1208603382] [2024-11-14 05:25:47,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1208603382] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-14 05:25:47,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:25:47,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2024-11-14 05:25:47,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642207647] [2024-11-14 05:25:47,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:25:47,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:25:47,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:25:47,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:25:47,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-11-14 05:25:47,934 INFO L87 Difference]: Start difference. First operand 113 states and 147 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:25:48,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:25:48,611 INFO L93 Difference]: Finished difference Result 119 states and 152 transitions. [2024-11-14 05:25:48,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:25:48,612 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2024-11-14 05:25:48,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:25:48,614 INFO L225 Difference]: With dead ends: 119 [2024-11-14 05:25:48,615 INFO L226 Difference]: Without dead ends: 117 [2024-11-14 05:25:48,615 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-11-14 05:25:48,616 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 3 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:25:48,617 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 313 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 05:25:48,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-14 05:25:48,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2024-11-14 05:25:48,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 86 states have (on average 1.244186046511628) internal successors, (107), 89 states have internal predecessors, (107), 18 states have call successors, (18), 10 states have call predecessors, (18), 12 states have return successors, (25), 17 states have call predecessors, (25), 17 states have call successors, (25) [2024-11-14 05:25:48,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 150 transitions. [2024-11-14 05:25:48,649 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 150 transitions. Word has length 40 [2024-11-14 05:25:48,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:25:48,649 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 150 transitions. [2024-11-14 05:25:48,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:25:48,649 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 150 transitions. [2024-11-14 05:25:48,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-14 05:25:48,651 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:25:48,654 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2024-11-14 05:25:48,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2024-11-14 05:25:48,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:25:48,860 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:25:48,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:25:48,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1458145500, now seen corresponding path program 1 times [2024-11-14 05:25:48,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:25:48,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [11104266] [2024-11-14 05:25:48,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:25:48,861 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 [2024-11-14 05:25:48,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:25:48,864 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:25:48,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-11-14 05:25:48,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:25:48,968 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:25:48,970 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:25:50,155 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-14 05:25:50,155 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:25:51,392 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-14 05:25:51,393 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:25:51,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [11104266] [2024-11-14 05:25:51,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [11104266] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:25:51,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [665975162] [2024-11-14 05:25:51,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:25:51,393 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:25:51,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:25:51,396 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:25:51,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2024-11-14 05:25:51,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:25:51,491 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:25:51,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:25:51,890 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-14 05:25:51,890 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:25:52,717 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-14 05:25:52,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [665975162] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:25:52,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297910393] [2024-11-14 05:25:52,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:25:52,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:25:52,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:25:52,720 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:25:52,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-14 05:25:52,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:25:52,801 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:25:52,803 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:25:53,178 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-14 05:25:53,179 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:25:54,150 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-14 05:25:54,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297910393] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:25:54,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:25:54,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 9 [2024-11-14 05:25:54,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279856582] [2024-11-14 05:25:54,151 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:25:54,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 05:25:54,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:25:54,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 05:25:54,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-14 05:25:54,153 INFO L87 Difference]: Start difference. First operand 117 states and 150 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-14 05:25:55,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:25:55,122 INFO L93 Difference]: Finished difference Result 151 states and 194 transitions. [2024-11-14 05:25:55,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 05:25:55,125 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 45 [2024-11-14 05:25:55,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:25:55,127 INFO L225 Difference]: With dead ends: 151 [2024-11-14 05:25:55,127 INFO L226 Difference]: Without dead ends: 140 [2024-11-14 05:25:55,128 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-14 05:25:55,130 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 17 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-14 05:25:55,131 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 481 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-14 05:25:55,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-14 05:25:55,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 131. [2024-11-14 05:25:55,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 95 states have (on average 1.231578947368421) internal successors, (117), 100 states have internal predecessors, (117), 21 states have call successors, (21), 10 states have call predecessors, (21), 14 states have return successors, (31), 20 states have call predecessors, (31), 20 states have call successors, (31) [2024-11-14 05:25:55,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 169 transitions. [2024-11-14 05:25:55,182 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 169 transitions. Word has length 45 [2024-11-14 05:25:55,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:25:55,185 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 169 transitions. [2024-11-14 05:25:55,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-14 05:25:55,185 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 169 transitions. [2024-11-14 05:25:55,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-14 05:25:55,188 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:25:55,188 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2024-11-14 05:25:55,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-14 05:25:55,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2024-11-14 05:25:55,591 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2024-11-14 05:25:55,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 05:25:55,790 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:25:55,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:25:55,790 INFO L85 PathProgramCache]: Analyzing trace with hash -757080922, now seen corresponding path program 1 times [2024-11-14 05:25:55,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:25:55,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [625451877] [2024-11-14 05:25:55,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:25:55,791 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 [2024-11-14 05:25:55,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:25:55,793 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:25:55,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-11-14 05:25:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:25:55,871 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 05:25:55,873 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:25:57,579 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-14 05:25:57,580 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:25:57,580 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:25:57,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [625451877] [2024-11-14 05:25:57,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [625451877] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:25:57,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:25:57,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-14 05:25:57,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743528909] [2024-11-14 05:25:57,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:25:57,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-14 05:25:57,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:25:57,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-14 05:25:57,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-14 05:25:57,583 INFO L87 Difference]: Start difference. First operand 131 states and 169 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 9 states have internal predecessors, (29), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-14 05:25:59,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:25:59,954 INFO L93 Difference]: Finished difference Result 180 states and 235 transitions. [2024-11-14 05:25:59,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 05:25:59,954 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 9 states have internal predecessors, (29), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 45 [2024-11-14 05:25:59,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:25:59,957 INFO L225 Difference]: With dead ends: 180 [2024-11-14 05:25:59,957 INFO L226 Difference]: Without dead ends: 173 [2024-11-14 05:25:59,958 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-14 05:25:59,958 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 22 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:25:59,959 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 697 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-14 05:25:59,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-14 05:25:59,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 133. [2024-11-14 05:25:59,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 97 states have (on average 1.2268041237113403) internal successors, (119), 101 states have internal predecessors, (119), 21 states have call successors, (21), 10 states have call predecessors, (21), 14 states have return successors, (31), 21 states have call predecessors, (31), 20 states have call successors, (31) [2024-11-14 05:25:59,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 171 transitions. [2024-11-14 05:25:59,997 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 171 transitions. Word has length 45 [2024-11-14 05:25:59,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:25:59,997 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 171 transitions. [2024-11-14 05:25:59,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 9 states have internal predecessors, (29), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-14 05:25:59,997 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 171 transitions. [2024-11-14 05:25:59,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-14 05:25:59,999 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:25:59,999 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-11-14 05:26:00,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2024-11-14 05:26:00,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:26:00,203 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:26:00,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:26:00,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1425276000, now seen corresponding path program 1 times [2024-11-14 05:26:00,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:26:00,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2143605663] [2024-11-14 05:26:00,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:26:00,204 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 [2024-11-14 05:26:00,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:26:00,206 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:26:00,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-11-14 05:26:00,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:26:00,262 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-14 05:26:00,263 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:26:01,598 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-14 05:26:01,598 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:26:01,598 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:26:01,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2143605663] [2024-11-14 05:26:01,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2143605663] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:26:01,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:26:01,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-14 05:26:01,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097734926] [2024-11-14 05:26:01,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:26:01,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 05:26:01,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:26:01,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 05:26:01,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-14 05:26:01,601 INFO L87 Difference]: Start difference. First operand 133 states and 171 transitions. Second operand has 10 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 05:26:02,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:26:02,766 INFO L93 Difference]: Finished difference Result 242 states and 326 transitions. [2024-11-14 05:26:02,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 05:26:02,767 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 46 [2024-11-14 05:26:02,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:26:02,771 INFO L225 Difference]: With dead ends: 242 [2024-11-14 05:26:02,771 INFO L226 Difference]: Without dead ends: 189 [2024-11-14 05:26:02,771 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-14 05:26:02,773 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 30 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:26:02,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 773 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-14 05:26:02,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-14 05:26:02,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 169. [2024-11-14 05:26:02,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 122 states have (on average 1.2295081967213115) internal successors, (150), 126 states have internal predecessors, (150), 30 states have call successors, (30), 12 states have call predecessors, (30), 16 states have return successors, (42), 30 states have call predecessors, (42), 29 states have call successors, (42) [2024-11-14 05:26:02,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 222 transitions. [2024-11-14 05:26:02,818 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 222 transitions. Word has length 46 [2024-11-14 05:26:02,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:26:02,818 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 222 transitions. [2024-11-14 05:26:02,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 05:26:02,819 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 222 transitions. [2024-11-14 05:26:02,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-14 05:26:02,821 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:26:02,821 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-11-14 05:26:02,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2024-11-14 05:26:03,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:26:03,022 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:26:03,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:26:03,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1167110562, now seen corresponding path program 1 times [2024-11-14 05:26:03,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:26:03,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1599448658] [2024-11-14 05:26:03,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:26:03,023 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 [2024-11-14 05:26:03,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:26:03,025 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:26:03,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2024-11-14 05:26:03,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:26:03,095 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:26:03,097 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:26:05,889 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-14 05:26:05,889 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:26:05,889 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:26:05,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1599448658] [2024-11-14 05:26:05,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1599448658] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:26:05,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:26:05,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-14 05:26:05,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742169153] [2024-11-14 05:26:05,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:26:05,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-14 05:26:05,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:26:05,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-14 05:26:05,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-11-14 05:26:05,892 INFO L87 Difference]: Start difference. First operand 169 states and 222 transitions. Second operand has 14 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 05:26:08,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:26:08,789 INFO L93 Difference]: Finished difference Result 203 states and 264 transitions. [2024-11-14 05:26:08,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-14 05:26:08,790 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 46 [2024-11-14 05:26:08,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:26:08,792 INFO L225 Difference]: With dead ends: 203 [2024-11-14 05:26:08,792 INFO L226 Difference]: Without dead ends: 201 [2024-11-14 05:26:08,793 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2024-11-14 05:26:08,793 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 39 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:26:08,794 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 1153 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-14 05:26:08,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-14 05:26:08,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 181. [2024-11-14 05:26:08,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 131 states have (on average 1.213740458015267) internal successors, (159), 135 states have internal predecessors, (159), 30 states have call successors, (30), 15 states have call predecessors, (30), 19 states have return successors, (42), 30 states have call predecessors, (42), 29 states have call successors, (42) [2024-11-14 05:26:08,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 231 transitions. [2024-11-14 05:26:08,832 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 231 transitions. Word has length 46 [2024-11-14 05:26:08,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:26:08,833 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 231 transitions. [2024-11-14 05:26:08,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 05:26:08,833 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 231 transitions. [2024-11-14 05:26:08,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-14 05:26:08,834 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:26:08,835 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-11-14 05:26:08,840 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2024-11-14 05:26:09,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:26:09,035 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:26:09,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:26:09,036 INFO L85 PathProgramCache]: Analyzing trace with hash 315610385, now seen corresponding path program 1 times [2024-11-14 05:26:09,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:26:09,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [242391921] [2024-11-14 05:26:09,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:26:09,036 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 [2024-11-14 05:26:09,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:26:09,038 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:26:09,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2024-11-14 05:26:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:26:09,122 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-14 05:26:09,124 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:26:10,892 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-14 05:26:10,893 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:26:12,476 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 05:26:12,476 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:26:12,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [242391921] [2024-11-14 05:26:12,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [242391921] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-14 05:26:12,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:26:12,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 16 [2024-11-14 05:26:12,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621178500] [2024-11-14 05:26:12,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:26:12,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 05:26:12,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:26:12,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 05:26:12,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-11-14 05:26:12,478 INFO L87 Difference]: Start difference. First operand 181 states and 231 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-14 05:26:13,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:26:13,473 INFO L93 Difference]: Finished difference Result 236 states and 304 transitions. [2024-11-14 05:26:13,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 05:26:13,474 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 50 [2024-11-14 05:26:13,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:26:13,476 INFO L225 Difference]: With dead ends: 236 [2024-11-14 05:26:13,476 INFO L226 Difference]: Without dead ends: 208 [2024-11-14 05:26:13,477 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2024-11-14 05:26:13,478 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 21 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-14 05:26:13,478 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 559 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-14 05:26:13,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-14 05:26:13,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 203. [2024-11-14 05:26:13,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 146 states have (on average 1.2191780821917808) internal successors, (178), 151 states have internal predecessors, (178), 35 states have call successors, (35), 16 states have call predecessors, (35), 21 states have return successors, (48), 35 states have call predecessors, (48), 34 states have call successors, (48) [2024-11-14 05:26:13,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 261 transitions. [2024-11-14 05:26:13,508 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 261 transitions. Word has length 50 [2024-11-14 05:26:13,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:26:13,508 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 261 transitions. [2024-11-14 05:26:13,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-14 05:26:13,509 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 261 transitions. [2024-11-14 05:26:13,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-14 05:26:13,510 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:26:13,510 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-11-14 05:26:13,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2024-11-14 05:26:13,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:26:13,715 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:26:13,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:26:13,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1280854101, now seen corresponding path program 1 times [2024-11-14 05:26:13,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:26:13,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [28012231] [2024-11-14 05:26:13,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:26:13,715 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 [2024-11-14 05:26:13,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:26:13,718 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:26:13,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2024-11-14 05:26:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:26:13,786 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:26:13,787 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:26:14,622 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-14 05:26:14,622 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:26:15,143 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 05:26:15,144 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:26:15,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [28012231] [2024-11-14 05:26:15,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [28012231] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:26:15,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [719244269] [2024-11-14 05:26:15,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:26:15,144 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:26:15,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:26:15,147 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:26:15,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2024-11-14 05:26:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:26:15,251 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 05:26:15,252 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:26:16,733 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-14 05:26:16,733 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:26:18,950 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-14 05:26:18,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [719244269] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-14 05:26:18,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:26:18,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 8, 7] total 18 [2024-11-14 05:26:18,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033123253] [2024-11-14 05:26:18,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:26:18,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 05:26:18,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:26:18,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 05:26:18,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2024-11-14 05:26:18,952 INFO L87 Difference]: Start difference. First operand 203 states and 261 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-14 05:26:20,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:26:20,390 INFO L93 Difference]: Finished difference Result 306 states and 402 transitions. [2024-11-14 05:26:20,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 05:26:20,391 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 50 [2024-11-14 05:26:20,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:26:20,393 INFO L225 Difference]: With dead ends: 306 [2024-11-14 05:26:20,394 INFO L226 Difference]: Without dead ends: 278 [2024-11-14 05:26:20,394 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2024-11-14 05:26:20,395 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 31 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:26:20,396 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 496 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-14 05:26:20,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2024-11-14 05:26:20,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 270. [2024-11-14 05:26:20,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 192 states have (on average 1.2395833333333333) internal successors, (238), 201 states have internal predecessors, (238), 50 states have call successors, (50), 18 states have call predecessors, (50), 27 states have return successors, (68), 50 states have call predecessors, (68), 49 states have call successors, (68) [2024-11-14 05:26:20,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 356 transitions. [2024-11-14 05:26:20,447 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 356 transitions. Word has length 50 [2024-11-14 05:26:20,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:26:20,447 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 356 transitions. [2024-11-14 05:26:20,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-14 05:26:20,447 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 356 transitions. [2024-11-14 05:26:20,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-14 05:26:20,449 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:26:20,450 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1] [2024-11-14 05:26:20,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2024-11-14 05:26:20,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2024-11-14 05:26:20,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:26:20,854 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:26:20,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:26:20,854 INFO L85 PathProgramCache]: Analyzing trace with hash 463205651, now seen corresponding path program 1 times [2024-11-14 05:26:20,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:26:20,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [313260648] [2024-11-14 05:26:20,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:26:20,855 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 [2024-11-14 05:26:20,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:26:20,858 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:26:20,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2024-11-14 05:26:20,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:26:20,934 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:26:20,936 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:26:21,750 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-14 05:26:21,750 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:26:22,309 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 05:26:22,310 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:26:22,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [313260648] [2024-11-14 05:26:22,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [313260648] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:26:22,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2102301874] [2024-11-14 05:26:22,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:26:22,310 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:26:22,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:26:22,313 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:26:22,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2024-11-14 05:26:22,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:26:22,430 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:26:22,434 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:26:23,600 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-14 05:26:23,600 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:26:24,460 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-14 05:26:24,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2102301874] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:26:24,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587436564] [2024-11-14 05:26:24,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:26:24,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:26:24,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:26:24,464 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:26:24,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-14 05:26:24,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:26:24,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:26:24,545 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:26:24,768 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-14 05:26:24,768 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:26:25,381 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-14 05:26:25,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587436564] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:26:25,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:26:25,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 13 [2024-11-14 05:26:25,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370181233] [2024-11-14 05:26:25,382 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:26:25,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-14 05:26:25,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:26:25,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-14 05:26:25,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-14 05:26:25,385 INFO L87 Difference]: Start difference. First operand 270 states and 356 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 11 states have internal predecessors, (50), 4 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-14 05:26:27,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:26:27,681 INFO L93 Difference]: Finished difference Result 384 states and 504 transitions. [2024-11-14 05:26:27,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-14 05:26:27,682 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 11 states have internal predecessors, (50), 4 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) Word has length 50 [2024-11-14 05:26:27,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:26:27,685 INFO L225 Difference]: With dead ends: 384 [2024-11-14 05:26:27,685 INFO L226 Difference]: Without dead ends: 316 [2024-11-14 05:26:27,686 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2024-11-14 05:26:27,687 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 37 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:26:27,688 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 603 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-14 05:26:27,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2024-11-14 05:26:27,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 273. [2024-11-14 05:26:27,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 198 states have (on average 1.2171717171717171) internal successors, (241), 204 states have internal predecessors, (241), 46 states have call successors, (46), 22 states have call predecessors, (46), 28 states have return successors, (64), 46 states have call predecessors, (64), 45 states have call successors, (64) [2024-11-14 05:26:27,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 351 transitions. [2024-11-14 05:26:27,725 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 351 transitions. Word has length 50 [2024-11-14 05:26:27,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:26:27,725 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 351 transitions. [2024-11-14 05:26:27,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 11 states have internal predecessors, (50), 4 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-14 05:26:27,726 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 351 transitions. [2024-11-14 05:26:27,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-14 05:26:27,728 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:26:27,728 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-11-14 05:26:27,731 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (22)] Ended with exit code 0 [2024-11-14 05:26:27,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-14 05:26:28,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2024-11-14 05:26:28,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:26:28,329 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:26:28,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:26:28,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1280178916, now seen corresponding path program 1 times [2024-11-14 05:26:28,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:26:28,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [6383070] [2024-11-14 05:26:28,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:26:28,330 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 [2024-11-14 05:26:28,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:26:28,333 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:26:28,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2024-11-14 05:26:28,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:26:28,405 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-14 05:26:28,407 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:26:29,233 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-14 05:26:29,233 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:26:35,193 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:26:35,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [6383070] [2024-11-14 05:26:35,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [6383070] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:26:35,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1640556526] [2024-11-14 05:26:35,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:26:35,194 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:26:35,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:26:35,196 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:26:35,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2024-11-14 05:26:35,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:26:35,285 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:26:35,286 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:26:35,471 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-14 05:26:35,471 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:26:35,909 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 05:26:35,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1640556526] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:26:35,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278669768] [2024-11-14 05:26:35,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:26:35,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:26:35,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:26:35,912 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:26:35,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-14 05:26:35,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:26:35,972 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:26:35,973 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:26:36,147 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-14 05:26:36,147 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:26:36,538 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 05:26:36,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278669768] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:26:36,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2024-11-14 05:26:36,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8] total 8 [2024-11-14 05:26:36,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131906783] [2024-11-14 05:26:36,538 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2024-11-14 05:26:36,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 05:26:36,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:26:36,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 05:26:36,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2024-11-14 05:26:36,539 INFO L87 Difference]: Start difference. First operand 273 states and 351 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-14 05:26:37,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:26:37,398 INFO L93 Difference]: Finished difference Result 368 states and 477 transitions. [2024-11-14 05:26:37,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 05:26:37,399 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 46 [2024-11-14 05:26:37,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:26:37,401 INFO L225 Difference]: With dead ends: 368 [2024-11-14 05:26:37,401 INFO L226 Difference]: Without dead ends: 320 [2024-11-14 05:26:37,402 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2024-11-14 05:26:37,403 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 34 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:26:37,403 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 593 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 05:26:37,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-11-14 05:26:37,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 293. [2024-11-14 05:26:37,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 212 states have (on average 1.221698113207547) internal successors, (259), 219 states have internal predecessors, (259), 50 states have call successors, (50), 23 states have call predecessors, (50), 30 states have return successors, (69), 50 states have call predecessors, (69), 49 states have call successors, (69) [2024-11-14 05:26:37,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 378 transitions. [2024-11-14 05:26:37,455 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 378 transitions. Word has length 46 [2024-11-14 05:26:37,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:26:37,455 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 378 transitions. [2024-11-14 05:26:37,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-14 05:26:37,456 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 378 transitions. [2024-11-14 05:26:37,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-14 05:26:37,457 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:26:37,457 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-11-14 05:26:37,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (25)] Ended with exit code 0 [2024-11-14 05:26:37,670 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-14 05:26:37,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2024-11-14 05:26:38,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:26:38,058 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:26:38,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:26:38,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1538344354, now seen corresponding path program 1 times [2024-11-14 05:26:38,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:26:38,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [935101512] [2024-11-14 05:26:38,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:26:38,059 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 [2024-11-14 05:26:38,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:26:38,061 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:26:38,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2024-11-14 05:26:38,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 05:26:38,121 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-14 05:26:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 05:26:38,200 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2024-11-14 05:26:38,200 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-14 05:26:38,202 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-11-14 05:26:38,205 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-14 05:26:38,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2024-11-14 05:26:38,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:26:38,409 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:26:38,442 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 05:26:38,445 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 05:26:38 BoogieIcfgContainer [2024-11-14 05:26:38,445 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 05:26:38,446 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 05:26:38,446 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 05:26:38,446 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 05:26:38,447 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:23:26" (3/4) ... [2024-11-14 05:26:38,448 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-14 05:26:38,494 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/witness.graphml [2024-11-14 05:26:38,494 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 05:26:38,495 INFO L158 Benchmark]: Toolchain (without parser) took 195840.60ms. Allocated memory is still 117.4MB. Free memory was 92.2MB in the beginning and 60.7MB in the end (delta: 31.6MB). Peak memory consumption was 32.6MB. Max. memory is 16.1GB. [2024-11-14 05:26:38,495 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 117.4MB. Free memory is still 83.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:26:38,495 INFO L158 Benchmark]: CACSL2BoogieTranslator took 524.90ms. Allocated memory is still 117.4MB. Free memory was 92.1MB in the beginning and 77.6MB in the end (delta: 14.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 05:26:38,496 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.41ms. Allocated memory is still 117.4MB. Free memory was 77.6MB in the beginning and 76.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:26:38,496 INFO L158 Benchmark]: Boogie Preprocessor took 40.26ms. Allocated memory is still 117.4MB. Free memory was 76.2MB in the beginning and 74.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:26:38,496 INFO L158 Benchmark]: RCFGBuilder took 2876.04ms. Allocated memory is still 117.4MB. Free memory was 74.8MB in the beginning and 57.4MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 05:26:38,496 INFO L158 Benchmark]: TraceAbstraction took 192301.26ms. Allocated memory is still 117.4MB. Free memory was 56.8MB in the beginning and 63.0MB in the end (delta: -6.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:26:38,497 INFO L158 Benchmark]: Witness Printer took 48.05ms. Allocated memory is still 117.4MB. Free memory was 63.0MB in the beginning and 60.7MB in the end (delta: 2.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 05:26:38,498 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 117.4MB. Free memory is still 83.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 524.90ms. Allocated memory is still 117.4MB. Free memory was 92.1MB in the beginning and 77.6MB in the end (delta: 14.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.41ms. Allocated memory is still 117.4MB. Free memory was 77.6MB in the beginning and 76.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 40.26ms. Allocated memory is still 117.4MB. Free memory was 76.2MB in the beginning and 74.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 2876.04ms. Allocated memory is still 117.4MB. Free memory was 74.8MB in the beginning and 57.4MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 192301.26ms. Allocated memory is still 117.4MB. Free memory was 56.8MB in the beginning and 63.0MB in the end (delta: -6.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 48.05ms. Allocated memory is still 117.4MB. Free memory was 63.0MB in the beginning and 60.7MB in the end (delta: 2.3MB). Peak memory consumption was 8.4MB. 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 - CounterExampleResult [Line: 60]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L309] COND FALSE !(__VERIFIER_nondet_int()) [L312] CALL main2() [L269] unsigned int a ; [L270] unsigned int ma = __VERIFIER_nondet_uint(); [L271] signed char ea = __VERIFIER_nondet_char(); [L272] unsigned int b ; [L273] unsigned int mb = __VERIFIER_nondet_uint(); [L274] signed char eb = __VERIFIER_nondet_char(); [L275] unsigned int r_add1 ; [L276] unsigned int r_add2 ; [L277] unsigned int zero ; [L278] int tmp ; [L279] int tmp___0 ; [L280] int __retres14 ; [L284] CALL, EXPR base2flt(0, 0) VAL [\old(e)=0, \old(m)=0] [L68] unsigned int res ; [L69] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=0, e=0, m=0] [L72] COND TRUE ! m [L73] __retres4 = 0U VAL [\old(e)=0, \old(m)=0, __retres4=0, e=0] [L123] return (__retres4); VAL [\old(e)=0, \old(m)=0, \result=0, e=0] [L284] RET, EXPR base2flt(0, 0) [L284] zero = base2flt(0, 0) [L285] CALL, EXPR base2flt(ma, ea) VAL [\old(e)=127, \old(m)=-2147483648] [L68] unsigned int res ; [L69] unsigned int __retres4 ; VAL [\old(e)=127, \old(m)=-2147483648, e=127, m=-2147483648] [L72] COND FALSE !(! m) VAL [\old(e)=127, \old(m)=-2147483648, e=127, m=-2147483648] [L78] COND FALSE !(m < 1U << 24U) VAL [\old(e)=127, \old(m)=-2147483648, e=127, m=-2147483648] [L100] COND TRUE 1 VAL [\old(e)=127, \old(m)=-2147483648, e=127, m=-2147483648] [L102] COND TRUE m >= 1U << 25U VAL [\old(e)=127, \old(m)=-2147483648, e=127, m=-2147483648] [L107] COND TRUE e >= 127 [L108] __retres4 = 4294967295U VAL [\old(e)=127, \old(m)=-2147483648, __retres4=-1, m=-2147483648] [L123] return (__retres4); VAL [\old(e)=127, \old(m)=-2147483648, \result=-1, m=-2147483648] [L285] RET, EXPR base2flt(ma, ea) VAL [ea=127, ma=-2147483648] [L285] a = base2flt(ma, ea) [L286] CALL, EXPR base2flt(mb, eb) VAL [\old(e)=0, \old(m)=16777216] [L68] unsigned int res ; [L69] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L72] COND FALSE !(! m) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L78] COND FALSE !(m < 1U << 24U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L100] COND TRUE 1 VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L102] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L119] m = m & ~ (1U << 24U) [L120] res = m | ((unsigned int )(e + 128) << 24U) [L121] __retres4 = res VAL [\old(e)=0, \old(m)=16777216, __retres4=-2147483648] [L123] return (__retres4); VAL [\old(e)=0, \old(m)=16777216, \result=-2147483648] [L286] RET, EXPR base2flt(mb, eb) VAL [a=-1, ea=127, eb=0, ma=-2147483648, mb=16777216] [L286] b = base2flt(mb, eb) [L287] CALL addflt(a, b) VAL [\old(a)=-1, \old(b)=-2147483648] [L127] unsigned int res ; [L128] unsigned int ma ; [L129] unsigned int mb ; [L130] unsigned int delta ; [L131] int ea ; [L132] int eb ; [L133] unsigned int tmp ; [L134] unsigned int __retres10 ; VAL [\old(a)=-1, \old(b)=-2147483648, a=-1, b=-2147483648] [L137] COND FALSE !(a < b) VAL [\old(a)=-1, \old(b)=-2147483648, a=-1, b=-2147483648] [L144] COND FALSE !(! b) [L151] ma = a & ((1U << 24U) - 1U) [L152] ea = (int )(a >> 24U) - 128 [L153] ma = ma | (1U << 24U) [L154] mb = b & ((1U << 24U) - 1U) [L155] eb = (int )(b >> 24U) - 128 [L156] mb = mb | (1U << 24U) VAL [\old(a)=-1, \old(b)=-2147483648, a=-1, ea=127, eb=0, ma=33554431, mb=16777216] [L157] CALL __VERIFIER_assert(ea >= eb) VAL [\old(cond)=1] [L59] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L157] RET __VERIFIER_assert(ea >= eb) VAL [\old(a)=-1, \old(b)=-2147483648, a=-1, ea=127, eb=0, ma=33554431, mb=16777216] [L158] delta = ea - eb VAL [\old(a)=-1, \old(b)=-2147483648, a=-1, delta=127, ea=127, ma=33554431, mb=16777216] [L159] CALL __VERIFIER_assert(delta < sizeof(mb) * 8) VAL [\old(cond)=0] [L59] COND TRUE !(cond) VAL [\old(cond)=0] [L60] reach_error() VAL [\old(cond)=0] - UnprovableResult [Line: 48]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 63 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 192.2s, OverallIterations: 16, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 27.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 427 SdHoareTripleChecker+Valid, 21.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 381 mSDsluCounter, 8375 SdHoareTripleChecker+Invalid, 21.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 148 IncrementalHoareTripleChecker+Unchecked, 7176 mSDsCounter, 47 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1325 IncrementalHoareTripleChecker+Invalid, 1523 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 47 mSolverCounterUnsat, 1199 mSDtfsCounter, 1325 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1747 GetRequests, 1576 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 36.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=293occurred in iteration=15, InterpolantAutomatonStates: 141, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 15 MinimizatonAttempts, 211 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 63.3s SatisfiabilityAnalysisTime, 94.0s InterpolantComputationTime, 1070 NumberOfCodeBlocks, 1052 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 1698 ConstructedInterpolants, 3 QuantifiedInterpolants, 3174 SizeOfPredicates, 41 NumberOfNonLiveVariables, 1982 ConjunctsInSsa, 234 ConjunctsInUnsatCore, 41 InterpolantComputations, 11 PerfectInterpolantSequences, 659/743 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 proved your program to be incorrect! [2024-11-14 05:26:38,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa413c62-b6e2-42ed-b817-a847f929554d/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE