./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-40.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/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_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-40.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/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_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/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 0300ce453fbcc7b624e880ece9c63a87dd96de28f551375d60d4427eef99d3e8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 02:42:01,765 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 02:42:01,844 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 02:42:01,849 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 02:42:01,849 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 02:42:01,873 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 02:42:01,874 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 02:42:01,874 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 02:42:01,875 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 02:42:01,875 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 02:42:01,875 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 02:42:01,875 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 02:42:01,875 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 02:42:01,875 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 02:42:01,876 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 02:42:01,876 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 02:42:01,876 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 02:42:01,876 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 02:42:01,876 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 02:42:01,876 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 02:42:01,877 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 02:42:01,877 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 02:42:01,877 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 02:42:01,877 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 02:42:01,877 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 02:42:01,878 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 02:42:01,878 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 02:42:01,878 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 02:42:01,878 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 02:42:01,878 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 02:42:01,878 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 02:42:01,879 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 02:42:01,879 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 02:42:01,879 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 02:42:01,879 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 02:42:01,879 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 02:42:01,879 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 02:42:01,879 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 02:42:01,879 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 02:42:01,880 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 02:42:01,880 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 02:42:01,880 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 02:42:01,880 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 02:42:01,880 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 02:42:01,880 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 02:42:01,880 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 02:42:01,880 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 02:42:01,880 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_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/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 -> 0300ce453fbcc7b624e880ece9c63a87dd96de28f551375d60d4427eef99d3e8 [2024-11-14 02:42:02,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 02:42:02,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 02:42:02,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 02:42:02,211 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 02:42:02,212 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 02:42:02,214 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-40.i Unable to find full path for "g++" [2024-11-14 02:42:04,133 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 02:42:04,394 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 02:42:04,395 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-40.i [2024-11-14 02:42:04,412 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/data/17ec40b66/d0e257dca6f44361a97d56999f9eb555/FLAGbc443c47e [2024-11-14 02:42:04,428 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/data/17ec40b66/d0e257dca6f44361a97d56999f9eb555 [2024-11-14 02:42:04,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 02:42:04,432 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 02:42:04,435 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 02:42:04,436 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 02:42:04,441 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 02:42:04,442 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 02:42:04" (1/1) ... [2024-11-14 02:42:04,445 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4338323e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:04, skipping insertion in model container [2024-11-14 02:42:04,446 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 02:42:04" (1/1) ... [2024-11-14 02:42:04,469 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 02:42:04,632 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_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-40.i[916,929] [2024-11-14 02:42:04,670 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 02:42:04,680 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 02:42:04,689 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_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-40.i[916,929] [2024-11-14 02:42:04,709 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 02:42:04,725 INFO L204 MainTranslator]: Completed translation [2024-11-14 02:42:04,725 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:04 WrapperNode [2024-11-14 02:42:04,725 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 02:42:04,726 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 02:42:04,727 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 02:42:04,727 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 02:42:04,733 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:04" (1/1) ... [2024-11-14 02:42:04,744 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:04" (1/1) ... [2024-11-14 02:42:04,780 INFO L138 Inliner]: procedures = 26, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 141 [2024-11-14 02:42:04,780 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 02:42:04,780 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 02:42:04,780 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 02:42:04,781 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 02:42:04,791 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:04" (1/1) ... [2024-11-14 02:42:04,791 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:04" (1/1) ... [2024-11-14 02:42:04,798 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:04" (1/1) ... [2024-11-14 02:42:04,798 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:04" (1/1) ... [2024-11-14 02:42:04,806 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:04" (1/1) ... [2024-11-14 02:42:04,813 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:04" (1/1) ... [2024-11-14 02:42:04,819 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:04" (1/1) ... [2024-11-14 02:42:04,820 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:04" (1/1) ... [2024-11-14 02:42:04,826 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 02:42:04,826 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 02:42:04,826 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 02:42:04,827 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 02:42:04,827 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:04" (1/1) ... [2024-11-14 02:42:04,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 02:42:04,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:42:04,876 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 02:42:04,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 02:42:04,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 02:42:04,904 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-14 02:42:04,904 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-14 02:42:04,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 02:42:04,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 02:42:04,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 02:42:04,993 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 02:42:04,995 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 02:42:05,310 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-14 02:42:05,311 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 02:42:05,521 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 02:42:05,521 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 02:42:05,521 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 02:42:05 BoogieIcfgContainer [2024-11-14 02:42:05,521 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 02:42:05,524 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 02:42:05,524 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 02:42:05,529 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 02:42:05,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 02:42:04" (1/3) ... [2024-11-14 02:42:05,530 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aca703f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 02:42:05, skipping insertion in model container [2024-11-14 02:42:05,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:04" (2/3) ... [2024-11-14 02:42:05,530 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aca703f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 02:42:05, skipping insertion in model container [2024-11-14 02:42:05,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 02:42:05" (3/3) ... [2024-11-14 02:42:05,532 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_no-floats_file-40.i [2024-11-14 02:42:05,550 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 02:42:05,551 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_floatingpointinfluence_no-floats_file-40.i that has 2 procedures, 38 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-14 02:42:05,647 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 02:42:05,663 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;@741fe260, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 02:42:05,664 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 02:42:05,669 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-14 02:42:05,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-14 02:42:05,679 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:05,679 INFO L215 NwaCegarLoop]: trace histogram [20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:42:05,680 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:42:05,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:05,685 INFO L85 PathProgramCache]: Analyzing trace with hash 929015776, now seen corresponding path program 1 times [2024-11-14 02:42:05,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:05,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562619384] [2024-11-14 02:42:05,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:05,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:06,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 02:42:06,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [754988273] [2024-11-14 02:42:06,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:06,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:42:06,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:42:06,073 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:42:06,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 02:42:06,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 02:42:06,303 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-14 02:42:06,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 02:42:06,515 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-14 02:42:06,517 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-14 02:42:06,519 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-14 02:42:06,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 02:42:06,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-14 02:42:06,725 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-14 02:42:06,831 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 02:42:06,834 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 02:42:06 BoogieIcfgContainer [2024-11-14 02:42:06,834 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 02:42:06,835 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 02:42:06,835 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 02:42:06,835 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 02:42:06,837 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 02:42:05" (3/4) ... [2024-11-14 02:42:06,840 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-14 02:42:06,841 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 02:42:06,844 INFO L158 Benchmark]: Toolchain (without parser) took 2410.25ms. Allocated memory is still 142.6MB. Free memory was 118.2MB in the beginning and 74.9MB in the end (delta: 43.3MB). Peak memory consumption was 38.3MB. Max. memory is 16.1GB. [2024-11-14 02:42:06,845 INFO L158 Benchmark]: CDTParser took 1.10ms. Allocated memory is still 142.6MB. Free memory is still 79.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 02:42:06,845 INFO L158 Benchmark]: CACSL2BoogieTranslator took 291.36ms. Allocated memory is still 142.6MB. Free memory was 118.0MB in the beginning and 105.2MB in the end (delta: 12.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 02:42:06,845 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.44ms. Allocated memory is still 142.6MB. Free memory was 105.2MB in the beginning and 103.1MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 02:42:06,846 INFO L158 Benchmark]: Boogie Preprocessor took 45.31ms. Allocated memory is still 142.6MB. Free memory was 103.1MB in the beginning and 101.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 02:42:06,846 INFO L158 Benchmark]: RCFGBuilder took 695.19ms. Allocated memory is still 142.6MB. Free memory was 101.7MB in the beginning and 64.7MB in the end (delta: 37.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-14 02:42:06,846 INFO L158 Benchmark]: TraceAbstraction took 1310.14ms. Allocated memory is still 142.6MB. Free memory was 64.3MB in the beginning and 74.9MB in the end (delta: -10.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 02:42:06,850 INFO L158 Benchmark]: Witness Printer took 5.79ms. Allocated memory is still 142.6MB. Free memory is still 74.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 02:42:06,852 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.10ms. Allocated memory is still 142.6MB. Free memory is still 79.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 291.36ms. Allocated memory is still 142.6MB. Free memory was 118.0MB in the beginning and 105.2MB in the end (delta: 12.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.44ms. Allocated memory is still 142.6MB. Free memory was 105.2MB in the beginning and 103.1MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.31ms. Allocated memory is still 142.6MB. Free memory was 103.1MB in the beginning and 101.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 695.19ms. Allocated memory is still 142.6MB. Free memory was 101.7MB in the beginning and 64.7MB in the end (delta: 37.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1310.14ms. Allocated memory is still 142.6MB. Free memory was 64.3MB in the beginning and 74.9MB in the end (delta: -10.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.79ms. Allocated memory is still 142.6MB. Free memory is still 74.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of to_int at line 63, overapproximation of someBinaryFLOATComparisonOperation at line 49, overapproximation of bitwiseOr at line 57. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] signed long int var_1_1 = -4; [L23] unsigned char var_1_2 = 0; [L24] unsigned char var_1_3 = 0; [L25] unsigned char var_1_7 = 64; [L26] signed long int var_1_8 = -2; [L27] signed long int var_1_9 = -10; [L28] unsigned char var_1_11 = 128; [L29] unsigned char var_1_12 = 1; [L30] signed long int var_1_13 = 8; [L31] signed long int var_1_15 = 49; [L32] signed char var_1_16 = -2; [L33] signed char var_1_17 = 25; [L34] signed char var_1_18 = -5; [L35] signed long int var_1_19 = 7; [L36] signed short int var_1_20 = 1; [L37] signed short int var_1_21 = -256; [L38] signed long int last_1_var_1_13 = 8; [L105] isInitial = 1 [L106] FCALL initially() [L107] COND TRUE 1 [L108] CALL updateLastVariables() [L98] last_1_var_1_13 = var_1_13 [L108] RET updateLastVariables() [L109] CALL updateVariables() [L67] var_1_2 = __VERIFIER_nondet_uchar() [L68] CALL assume_abort_if_not(var_1_2 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=8, var_1_11=128, var_1_12=1, var_1_13=8, var_1_15=49, var_1_16=-2, var_1_17=25, var_1_18=-5, var_1_19=7, var_1_1=-4, var_1_20=1, var_1_21=-256, var_1_3=0, var_1_7=64, var_1_8=-2, var_1_9=-10] [L20] COND FALSE !(!cond) [L68] RET assume_abort_if_not(var_1_2 >= 0) VAL [isInitial=1, last_1_var_1_13=8, var_1_11=128, var_1_12=1, var_1_13=8, var_1_15=49, var_1_16=-2, var_1_17=25, var_1_18=-5, var_1_19=7, var_1_1=-4, var_1_20=1, var_1_21=-256, var_1_3=0, var_1_7=64, var_1_8=-2, var_1_9=-10] [L69] CALL assume_abort_if_not(var_1_2 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=8, var_1_11=128, var_1_12=1, var_1_13=8, var_1_15=49, var_1_16=-2, var_1_17=25, var_1_18=-5, var_1_19=7, var_1_1=-4, var_1_20=1, var_1_21=-256, var_1_2=0, var_1_3=0, var_1_7=64, var_1_8=-2, var_1_9=-10] [L20] COND FALSE !(!cond) [L69] RET assume_abort_if_not(var_1_2 <= 1) VAL [isInitial=1, last_1_var_1_13=8, var_1_11=128, var_1_12=1, var_1_13=8, var_1_15=49, var_1_16=-2, var_1_17=25, var_1_18=-5, var_1_19=7, var_1_1=-4, var_1_20=1, var_1_21=-256, var_1_2=0, var_1_3=0, var_1_7=64, var_1_8=-2, var_1_9=-10] [L70] var_1_3 = __VERIFIER_nondet_uchar() [L71] CALL assume_abort_if_not(var_1_3 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=8, var_1_11=128, var_1_12=1, var_1_13=8, var_1_15=49, var_1_16=-2, var_1_17=25, var_1_18=-5, var_1_19=7, var_1_1=-4, var_1_20=1, var_1_21=-256, var_1_2=0, var_1_7=64, var_1_8=-2, var_1_9=-10] [L20] COND FALSE !(!cond) [L71] RET assume_abort_if_not(var_1_3 >= 0) VAL [isInitial=1, last_1_var_1_13=8, var_1_11=128, var_1_12=1, var_1_13=8, var_1_15=49, var_1_16=-2, var_1_17=25, var_1_18=-5, var_1_19=7, var_1_1=-4, var_1_20=1, var_1_21=-256, var_1_2=0, var_1_7=64, var_1_8=-2, var_1_9=-10] [L72] CALL assume_abort_if_not(var_1_3 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=8, var_1_11=128, var_1_12=1, var_1_13=8, var_1_15=49, var_1_16=-2, var_1_17=25, var_1_18=-5, var_1_19=7, var_1_1=-4, var_1_20=1, var_1_21=-256, var_1_2=0, var_1_3=0, var_1_7=64, var_1_8=-2, var_1_9=-10] [L20] COND FALSE !(!cond) [L72] RET assume_abort_if_not(var_1_3 <= 1) VAL [isInitial=1, last_1_var_1_13=8, var_1_11=128, var_1_12=1, var_1_13=8, var_1_15=49, var_1_16=-2, var_1_17=25, var_1_18=-5, var_1_19=7, var_1_1=-4, var_1_20=1, var_1_21=-256, var_1_2=0, var_1_3=0, var_1_7=64, var_1_8=-2, var_1_9=-10] [L73] var_1_8 = __VERIFIER_nondet_long() [L74] CALL assume_abort_if_not(var_1_8 >= -2147483648) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=8, var_1_11=128, var_1_12=1, var_1_13=8, var_1_15=49, var_1_16=-2, var_1_17=25, var_1_18=-5, var_1_19=7, var_1_1=-4, var_1_20=1, var_1_21=-256, var_1_2=0, var_1_3=0, var_1_7=64, var_1_8=-1, var_1_9=-10] [L20] COND FALSE !(!cond) [L74] RET assume_abort_if_not(var_1_8 >= -2147483648) VAL [isInitial=1, last_1_var_1_13=8, var_1_11=128, var_1_12=1, var_1_13=8, var_1_15=49, var_1_16=-2, var_1_17=25, var_1_18=-5, var_1_19=7, var_1_1=-4, var_1_20=1, var_1_21=-256, var_1_2=0, var_1_3=0, var_1_7=64, var_1_8=-1, var_1_9=-10] [L75] CALL assume_abort_if_not(var_1_8 <= 2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=8, var_1_11=128, var_1_12=1, var_1_13=8, var_1_15=49, var_1_16=-2, var_1_17=25, var_1_18=-5, var_1_19=7, var_1_1=-4, var_1_20=1, var_1_21=-256, var_1_2=0, var_1_3=0, var_1_7=64, var_1_8=-1, var_1_9=-10] [L20] COND FALSE !(!cond) [L75] RET assume_abort_if_not(var_1_8 <= 2147483647) VAL [isInitial=1, last_1_var_1_13=8, var_1_11=128, var_1_12=1, var_1_13=8, var_1_15=49, var_1_16=-2, var_1_17=25, var_1_18=-5, var_1_19=7, var_1_1=-4, var_1_20=1, var_1_21=-256, var_1_2=0, var_1_3=0, var_1_7=64, var_1_8=-1, var_1_9=-10] [L76] CALL assume_abort_if_not(var_1_8 != 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=8, var_1_11=128, var_1_12=1, var_1_13=8, var_1_15=49, var_1_16=-2, var_1_17=25, var_1_18=-5, var_1_19=7, var_1_1=-4, var_1_20=1, var_1_21=-256, var_1_2=0, var_1_3=0, var_1_7=64, var_1_8=-1, var_1_9=-10] [L20] COND FALSE !(!cond) [L76] RET assume_abort_if_not(var_1_8 != 0) VAL [isInitial=1, last_1_var_1_13=8, var_1_11=128, var_1_12=1, var_1_13=8, var_1_15=49, var_1_16=-2, var_1_17=25, var_1_18=-5, var_1_19=7, var_1_1=-4, var_1_20=1, var_1_21=-256, var_1_2=0, var_1_3=0, var_1_7=64, var_1_8=-1, var_1_9=-10] [L77] var_1_9 = __VERIFIER_nondet_long() [L78] CALL assume_abort_if_not(var_1_9 >= -2147483648) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=8, var_1_11=128, var_1_12=1, var_1_13=8, var_1_15=49, var_1_16=-2, var_1_17=25, var_1_18=-5, var_1_19=7, var_1_1=-4, var_1_20=1, var_1_21=-256, var_1_2=0, var_1_3=0, var_1_7=64, var_1_8=-1, var_1_9=-1] [L20] COND FALSE !(!cond) [L78] RET assume_abort_if_not(var_1_9 >= -2147483648) VAL [isInitial=1, last_1_var_1_13=8, var_1_11=128, var_1_12=1, var_1_13=8, var_1_15=49, var_1_16=-2, var_1_17=25, var_1_18=-5, var_1_19=7, var_1_1=-4, var_1_20=1, var_1_21=-256, var_1_2=0, var_1_3=0, var_1_7=64, var_1_8=-1, var_1_9=-1] [L79] CALL assume_abort_if_not(var_1_9 <= 2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=8, var_1_11=128, var_1_12=1, var_1_13=8, var_1_15=49, var_1_16=-2, var_1_17=25, var_1_18=-5, var_1_19=7, var_1_1=-4, var_1_20=1, var_1_21=-256, var_1_2=0, var_1_3=0, var_1_7=64, var_1_8=-1, var_1_9=-1] [L20] COND FALSE !(!cond) [L79] RET assume_abort_if_not(var_1_9 <= 2147483647) VAL [isInitial=1, last_1_var_1_13=8, var_1_11=128, var_1_12=1, var_1_13=8, var_1_15=49, var_1_16=-2, var_1_17=25, var_1_18=-5, var_1_19=7, var_1_1=-4, var_1_20=1, var_1_21=-256, var_1_2=0, var_1_3=0, var_1_7=64, var_1_8=-1, var_1_9=-1] [L80] CALL assume_abort_if_not(var_1_9 != 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=8, var_1_11=128, var_1_12=1, var_1_13=8, var_1_15=49, var_1_16=-2, var_1_17=25, var_1_18=-5, var_1_19=7, var_1_1=-4, var_1_20=1, var_1_21=-256, var_1_2=0, var_1_3=0, var_1_7=64, var_1_8=-1, var_1_9=-1] [L20] COND FALSE !(!cond) [L80] RET assume_abort_if_not(var_1_9 != 0) VAL [isInitial=1, last_1_var_1_13=8, var_1_11=128, var_1_12=1, var_1_13=8, var_1_15=49, var_1_16=-2, var_1_17=25, var_1_18=-5, var_1_19=7, var_1_1=-4, var_1_20=1, var_1_21=-256, var_1_2=0, var_1_3=0, var_1_7=64, var_1_8=-1, var_1_9=-1] [L81] var_1_11 = __VERIFIER_nondet_uchar() [L82] CALL assume_abort_if_not(var_1_11 >= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=8, var_1_11=-129, var_1_12=1, var_1_13=8, var_1_15=49, var_1_16=-2, var_1_17=25, var_1_18=-5, var_1_19=7, var_1_1=-4, var_1_20=1, var_1_21=-256, var_1_2=0, var_1_3=0, var_1_7=64, var_1_8=-1, var_1_9=-1] [L20] COND FALSE !(!cond) [L82] RET assume_abort_if_not(var_1_11 >= 127) VAL [isInitial=1, last_1_var_1_13=8, var_1_11=-129, var_1_12=1, var_1_13=8, var_1_15=49, var_1_16=-2, var_1_17=25, var_1_18=-5, var_1_19=7, var_1_1=-4, var_1_20=1, var_1_21=-256, var_1_2=0, var_1_3=0, var_1_7=64, var_1_8=-1, var_1_9=-1] [L83] CALL assume_abort_if_not(var_1_11 <= 254) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=8, var_1_11=-129, var_1_12=1, var_1_13=8, var_1_15=49, var_1_16=-2, var_1_17=25, var_1_18=-5, var_1_19=7, var_1_1=-4, var_1_20=1, var_1_21=-256, var_1_2=0, var_1_3=0, var_1_7=64, var_1_8=-1, var_1_9=-1] [L20] COND FALSE !(!cond) [L83] RET assume_abort_if_not(var_1_11 <= 254) VAL [isInitial=1, last_1_var_1_13=8, var_1_11=-129, var_1_12=1, var_1_13=8, var_1_15=49, var_1_16=-2, var_1_17=25, var_1_18=-5, var_1_19=7, var_1_1=-4, var_1_20=1, var_1_21=-256, var_1_2=0, var_1_3=0, var_1_7=64, var_1_8=-1, var_1_9=-1] [L84] var_1_12 = __VERIFIER_nondet_uchar() [L85] CALL assume_abort_if_not(var_1_12 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=8, var_1_11=-129, var_1_13=8, var_1_15=49, var_1_16=-2, var_1_17=25, var_1_18=-5, var_1_19=7, var_1_1=-4, var_1_20=1, var_1_21=-256, var_1_2=0, var_1_3=0, var_1_7=64, var_1_8=-1, var_1_9=-1] [L20] COND FALSE !(!cond) [L85] RET assume_abort_if_not(var_1_12 >= 0) VAL [isInitial=1, last_1_var_1_13=8, var_1_11=-129, var_1_13=8, var_1_15=49, var_1_16=-2, var_1_17=25, var_1_18=-5, var_1_19=7, var_1_1=-4, var_1_20=1, var_1_21=-256, var_1_2=0, var_1_3=0, var_1_7=64, var_1_8=-1, var_1_9=-1] [L86] CALL assume_abort_if_not(var_1_12 <= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=8, var_1_11=-129, var_1_12=-129, var_1_13=8, var_1_15=49, var_1_16=-2, var_1_17=25, var_1_18=-5, var_1_19=7, var_1_1=-4, var_1_20=1, var_1_21=-256, var_1_2=0, var_1_3=0, var_1_7=64, var_1_8=-1, var_1_9=-1] [L20] COND FALSE !(!cond) [L86] RET assume_abort_if_not(var_1_12 <= 127) VAL [isInitial=1, last_1_var_1_13=8, var_1_11=-129, var_1_12=-129, var_1_13=8, var_1_15=49, var_1_16=-2, var_1_17=25, var_1_18=-5, var_1_19=7, var_1_1=-4, var_1_20=1, var_1_21=-256, var_1_2=0, var_1_3=0, var_1_7=64, var_1_8=-1, var_1_9=-1] [L87] var_1_15 = __VERIFIER_nondet_long() [L88] CALL assume_abort_if_not(var_1_15 >= -2147483648) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=8, var_1_11=-129, var_1_12=-129, var_1_13=8, var_1_15=-2147483648, var_1_16=-2, var_1_17=25, var_1_18=-5, var_1_19=7, var_1_1=-4, var_1_20=1, var_1_21=-256, var_1_2=0, var_1_3=0, var_1_7=64, var_1_8=-1, var_1_9=-1] [L20] COND FALSE !(!cond) [L88] RET assume_abort_if_not(var_1_15 >= -2147483648) VAL [isInitial=1, last_1_var_1_13=8, var_1_11=-129, var_1_12=-129, var_1_13=8, var_1_15=-2147483648, var_1_16=-2, var_1_17=25, var_1_18=-5, var_1_19=7, var_1_1=-4, var_1_20=1, var_1_21=-256, var_1_2=0, var_1_3=0, var_1_7=64, var_1_8=-1, var_1_9=-1] [L89] CALL assume_abort_if_not(var_1_15 <= 2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=8, var_1_11=-129, var_1_12=-129, var_1_13=8, var_1_15=-2147483648, var_1_16=-2, var_1_17=25, var_1_18=-5, var_1_19=7, var_1_1=-4, var_1_20=1, var_1_21=-256, var_1_2=0, var_1_3=0, var_1_7=64, var_1_8=-1, var_1_9=-1] [L20] COND FALSE !(!cond) [L89] RET assume_abort_if_not(var_1_15 <= 2147483647) VAL [isInitial=1, last_1_var_1_13=8, var_1_11=-129, var_1_12=-129, var_1_13=8, var_1_15=-2147483648, var_1_16=-2, var_1_17=25, var_1_18=-5, var_1_19=7, var_1_1=-4, var_1_20=1, var_1_21=-256, var_1_2=0, var_1_3=0, var_1_7=64, var_1_8=-1, var_1_9=-1] [L90] var_1_17 = __VERIFIER_nondet_char() [L91] CALL assume_abort_if_not(var_1_17 >= -127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=8, var_1_11=-129, var_1_12=-129, var_1_13=8, var_1_15=-2147483648, var_1_16=-2, var_1_17=-127, var_1_18=-5, var_1_19=7, var_1_1=-4, var_1_20=1, var_1_21=-256, var_1_2=0, var_1_3=0, var_1_7=64, var_1_8=-1, var_1_9=-1] [L20] COND FALSE !(!cond) [L91] RET assume_abort_if_not(var_1_17 >= -127) VAL [isInitial=1, last_1_var_1_13=8, var_1_11=-129, var_1_12=-129, var_1_13=8, var_1_15=-2147483648, var_1_16=-2, var_1_17=-127, var_1_18=-5, var_1_19=7, var_1_1=-4, var_1_20=1, var_1_21=-256, var_1_2=0, var_1_3=0, var_1_7=64, var_1_8=-1, var_1_9=-1] [L92] CALL assume_abort_if_not(var_1_17 <= 126) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=8, var_1_11=-129, var_1_12=-129, var_1_13=8, var_1_15=-2147483648, var_1_16=-2, var_1_17=-127, var_1_18=-5, var_1_19=7, var_1_1=-4, var_1_20=1, var_1_21=-256, var_1_2=0, var_1_3=0, var_1_7=64, var_1_8=-1, var_1_9=-1] [L20] COND FALSE !(!cond) [L92] RET assume_abort_if_not(var_1_17 <= 126) VAL [isInitial=1, last_1_var_1_13=8, var_1_11=-129, var_1_12=-129, var_1_13=8, var_1_15=-2147483648, var_1_16=-2, var_1_17=-127, var_1_18=-5, var_1_19=7, var_1_1=-4, var_1_20=1, var_1_21=-256, var_1_2=0, var_1_3=0, var_1_7=64, var_1_8=-1, var_1_9=-1] [L93] var_1_18 = __VERIFIER_nondet_char() [L94] CALL assume_abort_if_not(var_1_18 >= -63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=8, var_1_11=-129, var_1_12=-129, var_1_13=8, var_1_15=-2147483648, var_1_16=-2, var_1_17=-127, var_1_18=1, var_1_19=7, var_1_1=-4, var_1_20=1, var_1_21=-256, var_1_2=0, var_1_3=0, var_1_7=64, var_1_8=-1, var_1_9=-1] [L20] COND FALSE !(!cond) [L94] RET assume_abort_if_not(var_1_18 >= -63) VAL [isInitial=1, last_1_var_1_13=8, var_1_11=-129, var_1_12=-129, var_1_13=8, var_1_15=-2147483648, var_1_16=-2, var_1_17=-127, var_1_18=1, var_1_19=7, var_1_1=-4, var_1_20=1, var_1_21=-256, var_1_2=0, var_1_3=0, var_1_7=64, var_1_8=-1, var_1_9=-1] [L95] CALL assume_abort_if_not(var_1_18 <= 63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=8, var_1_11=-129, var_1_12=-129, var_1_13=8, var_1_15=-2147483648, var_1_16=-2, var_1_17=-127, var_1_18=1, var_1_19=7, var_1_1=-4, var_1_20=1, var_1_21=-256, var_1_2=0, var_1_3=0, var_1_7=64, var_1_8=-1, var_1_9=-1] [L20] COND FALSE !(!cond) [L95] RET assume_abort_if_not(var_1_18 <= 63) VAL [isInitial=1, last_1_var_1_13=8, var_1_11=-129, var_1_12=-129, var_1_13=8, var_1_15=-2147483648, var_1_16=-2, var_1_17=-127, var_1_18=1, var_1_19=7, var_1_1=-4, var_1_20=1, var_1_21=-256, var_1_2=0, var_1_3=0, var_1_7=64, var_1_8=-1, var_1_9=-1] [L109] RET updateVariables() [L110] CALL step() [L42] COND FALSE !(\read(var_1_3)) [L45] var_1_19 = var_1_15 [L46] var_1_20 = var_1_16 [L47] var_1_21 = var_1_18 [L48] COND FALSE !(\read(var_1_2)) [L57] EXPR var_1_21 | var_1_16 [L57] COND FALSE !(((var_1_16 / var_1_8) / var_1_9) >= (var_1_21 | var_1_16)) [L60] var_1_7 = var_1_12 [L62] COND FALSE !(var_1_19 != ((((last_1_var_1_13) < (var_1_19)) ? (last_1_var_1_13) : (var_1_19)))) [L110] RET step() [L111] CALL, EXPR property() [L101] EXPR (var_1_2 ? ((var_1_3 && (var_1_19 <= (- 63.9f))) ? ((var_1_19 >= var_1_19) ? (var_1_3 ? (var_1_1 == ((signed long int) var_1_21)) : 1) : 1) : 1) : 1) && ((((var_1_16 / var_1_8) / var_1_9) >= (var_1_21 | var_1_16)) ? (var_1_7 == ((unsigned char) (var_1_11 - var_1_12))) : (var_1_7 == ((unsigned char) var_1_12))) [L101] EXPR var_1_21 | var_1_16 [L101] EXPR (var_1_2 ? ((var_1_3 && (var_1_19 <= (- 63.9f))) ? ((var_1_19 >= var_1_19) ? (var_1_3 ? (var_1_1 == ((signed long int) var_1_21)) : 1) : 1) : 1) : 1) && ((((var_1_16 / var_1_8) / var_1_9) >= (var_1_21 | var_1_16)) ? (var_1_7 == ((unsigned char) (var_1_11 - var_1_12))) : (var_1_7 == ((unsigned char) var_1_12))) [L101-L102] return ((((((var_1_2 ? ((var_1_3 && (var_1_19 <= (- 63.9f))) ? ((var_1_19 >= var_1_19) ? (var_1_3 ? (var_1_1 == ((signed long int) var_1_21)) : 1) : 1) : 1) : 1) && ((((var_1_16 / var_1_8) / var_1_9) >= (var_1_21 | var_1_16)) ? (var_1_7 == ((unsigned char) (var_1_11 - var_1_12))) : (var_1_7 == ((unsigned char) var_1_12)))) && ((var_1_19 != ((((last_1_var_1_13) < (var_1_19)) ? (last_1_var_1_13) : (var_1_19)))) ? (var_1_13 == ((signed long int) (var_1_15 + (127.4 - 8.25)))) : 1)) && (var_1_3 ? (var_1_16 == ((signed char) ((((var_1_17) > ((-2 + var_1_18))) ? (var_1_17) : ((-2 + var_1_18)))))) : 1)) && (var_1_19 == ((signed long int) var_1_15))) && (var_1_20 == ((signed short int) var_1_16))) && (var_1_21 == ((signed short int) var_1_18)) ; [L111] RET, EXPR property() [L111] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [isInitial=1, last_1_var_1_13=8, var_1_11=-129, var_1_12=-129, var_1_13=8, var_1_15=-2147483648, var_1_16=-2, var_1_17=-127, var_1_18=1, var_1_19=-2147483648, var_1_1=-4, var_1_20=-2, var_1_21=1, var_1_2=0, var_1_3=0, var_1_7=-129, var_1_8=-1, var_1_9=-1] [L19] reach_error() VAL [isInitial=1, last_1_var_1_13=8, var_1_11=-129, var_1_12=-129, var_1_13=8, var_1_15=-2147483648, var_1_16=-2, var_1_17=-127, var_1_18=1, var_1_19=-2147483648, var_1_1=-4, var_1_20=-2, var_1_21=1, var_1_2=0, var_1_3=0, var_1_7=-129, var_1_8=-1, var_1_9=-1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 1, TraceHistogramMax: 20, 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=38occurred 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, 0.4s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-14 02:42:06,885 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/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 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_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/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_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-40.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/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_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/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 0300ce453fbcc7b624e880ece9c63a87dd96de28f551375d60d4427eef99d3e8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 02:42:09,788 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 02:42:09,938 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2024-11-14 02:42:09,953 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 02:42:09,954 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 02:42:10,010 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 02:42:10,012 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 02:42:10,012 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 02:42:10,013 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 02:42:10,013 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 02:42:10,014 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 02:42:10,014 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 02:42:10,014 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 02:42:10,014 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 02:42:10,015 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 02:42:10,015 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 02:42:10,016 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 02:42:10,016 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 02:42:10,016 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 02:42:10,016 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 02:42:10,016 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 02:42:10,017 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 02:42:10,017 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 02:42:10,017 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 02:42:10,017 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 02:42:10,017 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-14 02:42:10,017 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 02:42:10,017 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-14 02:42:10,017 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 02:42:10,018 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 02:42:10,018 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 02:42:10,018 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 02:42:10,018 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-14 02:42:10,018 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 02:42:10,019 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 02:42:10,019 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 02:42:10,019 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 02:42:10,019 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 02:42:10,019 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 02:42:10,020 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-14 02:42:10,020 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-14 02:42:10,020 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 02:42:10,020 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 02:42:10,020 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_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/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 -> 0300ce453fbcc7b624e880ece9c63a87dd96de28f551375d60d4427eef99d3e8 [2024-11-14 02:42:10,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 02:42:10,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 02:42:10,389 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 02:42:10,391 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 02:42:10,391 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 02:42:10,392 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-40.i Unable to find full path for "g++" [2024-11-14 02:42:12,416 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 02:42:12,759 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 02:42:12,760 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-40.i [2024-11-14 02:42:12,775 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/data/1494d53b2/c14af701e1c045d496a644d370ac1eb5/FLAGd523107e1 [2024-11-14 02:42:12,806 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/data/1494d53b2/c14af701e1c045d496a644d370ac1eb5 [2024-11-14 02:42:12,809 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 02:42:12,811 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 02:42:12,813 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 02:42:12,813 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 02:42:12,819 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 02:42:12,820 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 02:42:12" (1/1) ... [2024-11-14 02:42:12,823 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a12abc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:12, skipping insertion in model container [2024-11-14 02:42:12,824 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 02:42:12" (1/1) ... [2024-11-14 02:42:12,847 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 02:42:13,042 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_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-40.i[916,929] [2024-11-14 02:42:13,116 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 02:42:13,140 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 02:42:13,157 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_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-40.i[916,929] [2024-11-14 02:42:13,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 02:42:13,238 INFO L204 MainTranslator]: Completed translation [2024-11-14 02:42:13,240 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:13 WrapperNode [2024-11-14 02:42:13,241 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 02:42:13,243 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 02:42:13,243 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 02:42:13,243 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 02:42:13,251 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:13" (1/1) ... [2024-11-14 02:42:13,267 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:13" (1/1) ... [2024-11-14 02:42:13,302 INFO L138 Inliner]: procedures = 27, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 113 [2024-11-14 02:42:13,304 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 02:42:13,305 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 02:42:13,307 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 02:42:13,307 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 02:42:13,314 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:13" (1/1) ... [2024-11-14 02:42:13,314 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:13" (1/1) ... [2024-11-14 02:42:13,318 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:13" (1/1) ... [2024-11-14 02:42:13,320 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:13" (1/1) ... [2024-11-14 02:42:13,334 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:13" (1/1) ... [2024-11-14 02:42:13,341 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:13" (1/1) ... [2024-11-14 02:42:13,348 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:13" (1/1) ... [2024-11-14 02:42:13,353 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:13" (1/1) ... [2024-11-14 02:42:13,356 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 02:42:13,358 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 02:42:13,358 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 02:42:13,358 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 02:42:13,359 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:13" (1/1) ... [2024-11-14 02:42:13,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 02:42:13,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:42:13,410 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 02:42:13,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 02:42:13,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 02:42:13,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-14 02:42:13,443 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-14 02:42:13,443 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-14 02:42:13,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 02:42:13,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 02:42:13,535 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 02:42:13,537 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 02:42:16,702 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-14 02:42:16,702 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 02:42:16,721 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 02:42:16,722 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 02:42:16,723 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 02:42:16 BoogieIcfgContainer [2024-11-14 02:42:16,723 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 02:42:16,726 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 02:42:16,726 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 02:42:16,732 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 02:42:16,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 02:42:12" (1/3) ... [2024-11-14 02:42:16,733 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13d585df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 02:42:16, skipping insertion in model container [2024-11-14 02:42:16,733 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:13" (2/3) ... [2024-11-14 02:42:16,734 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13d585df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 02:42:16, skipping insertion in model container [2024-11-14 02:42:16,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 02:42:16" (3/3) ... [2024-11-14 02:42:16,735 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_no-floats_file-40.i [2024-11-14 02:42:16,753 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 02:42:16,756 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_floatingpointinfluence_no-floats_file-40.i that has 2 procedures, 56 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-14 02:42:16,839 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 02:42:16,851 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;@4014b376, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 02:42:16,852 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 02:42:16,856 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 34 states have internal predecessors, (45), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-14 02:42:16,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-14 02:42:16,874 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:16,874 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:42:16,875 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:42:16,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:16,883 INFO L85 PathProgramCache]: Analyzing trace with hash -88867520, now seen corresponding path program 1 times [2024-11-14 02:42:16,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:42:16,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [981235027] [2024-11-14 02:42:16,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:16,897 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 02:42:16,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:42:16,900 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/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 02:42:16,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/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 02:42:17,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:17,303 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-14 02:42:17,314 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:42:17,370 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 398 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2024-11-14 02:42:17,370 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:42:17,371 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:42:17,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [981235027] [2024-11-14 02:42:17,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [981235027] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:17,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:42:17,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 02:42:17,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421653864] [2024-11-14 02:42:17,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:17,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-14 02:42:17,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:42:17,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-14 02:42:17,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 02:42:17,411 INFO L87 Difference]: Start difference. First operand has 56 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 34 states have internal predecessors, (45), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-14 02:42:17,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:17,452 INFO L93 Difference]: Finished difference Result 105 states and 184 transitions. [2024-11-14 02:42:17,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-14 02:42:17,456 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 123 [2024-11-14 02:42:17,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:17,463 INFO L225 Difference]: With dead ends: 105 [2024-11-14 02:42:17,463 INFO L226 Difference]: Without dead ends: 52 [2024-11-14 02:42:17,466 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 122 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 02:42:17,469 INFO L432 NwaCegarLoop]: 77 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, 77 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 02:42:17,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 02:42:17,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-14 02:42:17,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-11-14 02:42:17,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 30 states have internal predecessors, (37), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-14 02:42:17,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 77 transitions. [2024-11-14 02:42:17,514 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 77 transitions. Word has length 123 [2024-11-14 02:42:17,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:17,515 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 77 transitions. [2024-11-14 02:42:17,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-14 02:42:17,515 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 77 transitions. [2024-11-14 02:42:17,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-14 02:42:17,519 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:17,519 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:42:17,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-14 02:42:17,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/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 02:42:17,720 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:42:17,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:17,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1849573764, now seen corresponding path program 1 times [2024-11-14 02:42:17,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:42:17,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [816135544] [2024-11-14 02:42:17,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:17,722 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 02:42:17,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:42:17,725 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/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 02:42:17,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/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 02:42:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 02:42:18,237 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-14 02:42:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 02:42:18,730 ERROR L246 FreeRefinementEngine]: Caught known exception: Invalid model [2024-11-14 02:42:18,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1738315148] [2024-11-14 02:42:18,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:18,730 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 02:42:18,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 02:42:18,732 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 02:42:18,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-14 02:42:19,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:19,548 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-14 02:42:19,559 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:43:12,902 WARN L851 $PredicateComparison]: unable to prove that (and (= c_~var_1_19~0 c_~var_1_15~0) (= c_~var_1_12~0 c_~var_1_7~0) (= c_~var_1_13~0 ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode c_~var_1_15~0) (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 637.0 5.0)) ((_ to_fp 11 53) c_currentRoundingMode (/ 33.0 4.0)))))) (bvslt c_~last_1_var_1_13~0 c_~var_1_19~0) (not (let ((.cse0 ((_ sign_extend 24) (_ bv254 8)))) (bvsge (bvsdiv (bvsdiv .cse0 c_~var_1_8~0) c_~var_1_9~0) (bvor .cse0 ((_ sign_extend 16) c_~var_1_21~0))))) (= c_~var_1_3~0 (_ bv0 8)) (= ((_ sign_extend 8) c_~var_1_18~0) c_~var_1_21~0) (= (_ bv0 8) (bvadd (_ bv2 8) c_~var_1_16~0)) (= ((_ sign_extend 8) (_ bv254 8)) c_~var_1_20~0) (= (_ bv0 8) c_~var_1_2~0)) is different from false [2024-11-14 02:43:14,937 WARN L873 $PredicateComparison]: unable to prove that (and (= c_~var_1_19~0 c_~var_1_15~0) (= c_~var_1_12~0 c_~var_1_7~0) (= c_~var_1_13~0 ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode c_~var_1_15~0) (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 637.0 5.0)) ((_ to_fp 11 53) c_currentRoundingMode (/ 33.0 4.0)))))) (bvslt c_~last_1_var_1_13~0 c_~var_1_19~0) (not (let ((.cse0 ((_ sign_extend 24) (_ bv254 8)))) (bvsge (bvsdiv (bvsdiv .cse0 c_~var_1_8~0) c_~var_1_9~0) (bvor .cse0 ((_ sign_extend 16) c_~var_1_21~0))))) (= c_~var_1_3~0 (_ bv0 8)) (= ((_ sign_extend 8) c_~var_1_18~0) c_~var_1_21~0) (= (_ bv0 8) (bvadd (_ bv2 8) c_~var_1_16~0)) (= ((_ sign_extend 8) (_ bv254 8)) c_~var_1_20~0) (= (_ bv0 8) c_~var_1_2~0)) is different from true [2024-11-14 02:43:37,430 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-14 02:43:37,430 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:43:37,430 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:43:37,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [816135544] [2024-11-14 02:43:37,431 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 02:43:37,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1738315148] [2024-11-14 02:43:37,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1738315148] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:43:37,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:43:37,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-14 02:43:37,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082105748] [2024-11-14 02:43:37,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:43:37,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 02:43:37,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:43:37,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 02:43:37,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=47, Unknown=2, NotChecked=14, Total=90 [2024-11-14 02:43:37,436 INFO L87 Difference]: Start difference. First operand 52 states and 77 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-14 02:43:43,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:43:44,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:43:47,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:43:49,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:43:51,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:43:54,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:43:56,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:43:58,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:44:00,081 WARN L539 Checker$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 02:44:02,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:44:04,096 WARN L539 Checker$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 02:44:06,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:44:08,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:44:10,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:44:12,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:44:14,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:44:16,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:44:18,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:44:18,392 INFO L93 Difference]: Finished difference Result 183 states and 261 transitions. [2024-11-14 02:44:18,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 02:44:18,393 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 123 [2024-11-14 02:44:18,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:44:18,396 INFO L225 Difference]: With dead ends: 183 [2024-11-14 02:44:18,396 INFO L226 Difference]: Without dead ends: 134 [2024-11-14 02:44:18,397 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=27, Invalid=47, Unknown=2, NotChecked=14, Total=90 [2024-11-14 02:44:18,399 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 82 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 2 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 191 IncrementalHoareTripleChecker+Unchecked, 40.9s IncrementalHoareTripleChecker+Time [2024-11-14 02:44:18,399 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 368 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 133 Invalid, 15 Unknown, 191 Unchecked, 40.9s Time] [2024-11-14 02:44:18,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-14 02:44:18,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 106. [2024-11-14 02:44:18,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 62 states have (on average 1.2258064516129032) internal successors, (76), 62 states have internal predecessors, (76), 40 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-14 02:44:18,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 156 transitions. [2024-11-14 02:44:18,436 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 156 transitions. Word has length 123 [2024-11-14 02:44:18,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:44:18,437 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 156 transitions. [2024-11-14 02:44:18,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-14 02:44:18,438 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 156 transitions. [2024-11-14 02:44:18,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-14 02:44:18,440 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:44:18,440 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:44:18,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2024-11-14 02:44:18,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/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 02:44:18,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/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 02:44:18,842 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:44:18,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:44:18,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1847726722, now seen corresponding path program 1 times [2024-11-14 02:44:18,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:44:18,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1689320134] [2024-11-14 02:44:18,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:44:18,844 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 02:44:18,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:44:18,848 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/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 02:44:18,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/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 02:44:19,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 02:44:19,368 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-14 02:44:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 02:44:19,962 ERROR L246 FreeRefinementEngine]: Caught known exception: Invalid model [2024-11-14 02:44:19,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2111461466] [2024-11-14 02:44:19,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:44:19,963 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 02:44:19,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 02:44:19,968 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 02:44:19,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-14 02:44:21,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:44:21,033 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-14 02:44:21,049 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:45:33,354 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-14 02:45:33,354 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:45:33,354 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:45:33,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1689320134] [2024-11-14 02:45:33,355 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 02:45:33,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2111461466] [2024-11-14 02:45:33,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2111461466] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:45:33,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:45:33,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-14 02:45:33,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403109923] [2024-11-14 02:45:33,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:45:33,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 02:45:33,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:45:33,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 02:45:33,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-11-14 02:45:33,357 INFO L87 Difference]: Start difference. First operand 106 states and 156 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-14 02:45:38,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:45:40,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:45:42,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:45:44,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:45:46,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:45:47,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:45:50,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:45:52,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:45:55,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:45:57,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:45:59,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:46:00,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:46:03,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:46:04,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:46:10,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:46:12,175 WARN L539 Checker$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 02:46:14,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:46:16,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:46:18,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:46:20,411 WARN L539 Checker$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 02:46:30,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:46:30,577 INFO L93 Difference]: Finished difference Result 252 states and 358 transitions. [2024-11-14 02:46:30,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 02:46:30,589 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 123 [2024-11-14 02:46:30,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:46:30,596 INFO L225 Difference]: With dead ends: 252 [2024-11-14 02:46:30,596 INFO L226 Difference]: Without dead ends: 203 [2024-11-14 02:46:30,597 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 17.3s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2024-11-14 02:46:30,598 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 72 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 2 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.3s IncrementalHoareTripleChecker+Time [2024-11-14 02:46:30,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 369 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 161 Invalid, 15 Unknown, 0 Unchecked, 48.3s Time] [2024-11-14 02:46:30,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2024-11-14 02:46:30,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 160. [2024-11-14 02:46:30,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 94 states have (on average 1.2234042553191489) internal successors, (115), 94 states have internal predecessors, (115), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-14 02:46:30,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 235 transitions. [2024-11-14 02:46:30,643 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 235 transitions. Word has length 123 [2024-11-14 02:46:30,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:46:30,644 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 235 transitions. [2024-11-14 02:46:30,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-14 02:46:30,644 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 235 transitions. [2024-11-14 02:46:30,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-14 02:46:30,647 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:46:30,647 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:46:30,674 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/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 02:46:30,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2024-11-14 02:46:31,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 02:46:31,048 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:46:31,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:46:31,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1906832066, now seen corresponding path program 1 times [2024-11-14 02:46:31,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:46:31,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2115468103] [2024-11-14 02:46:31,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:46:31,051 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 02:46:31,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:46:31,057 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/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 02:46:31,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-11-14 02:46:31,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 02:46:31,359 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-14 02:46:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 02:46:31,604 ERROR L246 FreeRefinementEngine]: Caught known exception: Invalid model [2024-11-14 02:46:31,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [833230289] [2024-11-14 02:46:31,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:46:31,604 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 02:46:31,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 02:46:31,608 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 02:46:31,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-11-14 02:46:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:46:32,418 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-14 02:46:32,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:47:21,101 WARN L851 $PredicateComparison]: unable to prove that (and (= c_~var_1_19~0 c_~var_1_15~0) (let ((.cse0 ((_ sign_extend 24) (_ bv254 8)))) (bvsge (bvsdiv (bvsdiv .cse0 c_~var_1_8~0) c_~var_1_9~0) (bvor .cse0 ((_ sign_extend 16) c_~var_1_21~0)))) (= c_~var_1_13~0 ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode c_~var_1_15~0) (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 637.0 5.0)) ((_ to_fp 11 53) c_currentRoundingMode (/ 33.0 4.0)))))) (bvslt c_~last_1_var_1_13~0 c_~var_1_19~0) (= c_~var_1_3~0 (_ bv0 8)) (= ((_ sign_extend 8) c_~var_1_18~0) c_~var_1_21~0) (= c_~var_1_7~0 ((_ extract 7 0) (bvadd (bvneg ((_ zero_extend 24) c_~var_1_12~0)) ((_ zero_extend 24) c_~var_1_11~0)))) (= (_ bv0 8) (bvadd (_ bv2 8) c_~var_1_16~0)) (= ((_ sign_extend 8) (_ bv254 8)) c_~var_1_20~0) (= (_ bv0 8) c_~var_1_2~0)) is different from false [2024-11-14 02:47:23,134 WARN L873 $PredicateComparison]: unable to prove that (and (= c_~var_1_19~0 c_~var_1_15~0) (let ((.cse0 ((_ sign_extend 24) (_ bv254 8)))) (bvsge (bvsdiv (bvsdiv .cse0 c_~var_1_8~0) c_~var_1_9~0) (bvor .cse0 ((_ sign_extend 16) c_~var_1_21~0)))) (= c_~var_1_13~0 ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode c_~var_1_15~0) (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 637.0 5.0)) ((_ to_fp 11 53) c_currentRoundingMode (/ 33.0 4.0)))))) (bvslt c_~last_1_var_1_13~0 c_~var_1_19~0) (= c_~var_1_3~0 (_ bv0 8)) (= ((_ sign_extend 8) c_~var_1_18~0) c_~var_1_21~0) (= c_~var_1_7~0 ((_ extract 7 0) (bvadd (bvneg ((_ zero_extend 24) c_~var_1_12~0)) ((_ zero_extend 24) c_~var_1_11~0)))) (= (_ bv0 8) (bvadd (_ bv2 8) c_~var_1_16~0)) (= ((_ sign_extend 8) (_ bv254 8)) c_~var_1_20~0) (= (_ bv0 8) c_~var_1_2~0)) is different from true [2024-11-14 02:47:34,764 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-14 02:47:34,765 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:47:34,765 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:47:34,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2115468103] [2024-11-14 02:47:34,765 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 02:47:34,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [833230289] [2024-11-14 02:47:34,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [833230289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:47:34,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:47:34,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-14 02:47:34,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552386120] [2024-11-14 02:47:34,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:47:34,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 02:47:34,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:47:34,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 02:47:34,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=47, Unknown=2, NotChecked=14, Total=90 [2024-11-14 02:47:34,768 INFO L87 Difference]: Start difference. First operand 160 states and 235 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-14 02:47:39,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:47:40,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:47:43,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:47:45,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:47:47,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:47:49,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:47:51,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:47:53,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:47:55,517 WARN L539 Checker$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 02:47:57,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:47:59,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:48:01,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:48:04,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:48:06,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:48:08,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:48:10,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:48:12,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:48:14,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:48:15,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:48:16,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:48:16,430 INFO L93 Difference]: Finished difference Result 314 states and 443 transitions. [2024-11-14 02:48:16,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 02:48:16,431 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 123 [2024-11-14 02:48:16,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:48:16,440 INFO L225 Difference]: With dead ends: 314 [2024-11-14 02:48:16,441 INFO L226 Difference]: Without dead ends: 312 [2024-11-14 02:48:16,441 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=27, Invalid=47, Unknown=2, NotChecked=14, Total=90 [2024-11-14 02:48:16,442 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 66 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 1 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 191 IncrementalHoareTripleChecker+Unchecked, 41.6s IncrementalHoareTripleChecker+Time [2024-11-14 02:48:16,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 376 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 173 Invalid, 16 Unknown, 191 Unchecked, 41.6s Time] [2024-11-14 02:48:16,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-11-14 02:48:16,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 270. [2024-11-14 02:48:16,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 160 states have (on average 1.23125) internal successors, (197), 160 states have internal predecessors, (197), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-14 02:48:16,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 397 transitions. [2024-11-14 02:48:16,523 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 397 transitions. Word has length 123 [2024-11-14 02:48:16,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:48:16,525 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 397 transitions. [2024-11-14 02:48:16,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-14 02:48:16,525 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 397 transitions. [2024-11-14 02:48:16,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-14 02:48:16,531 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:48:16,531 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:48:16,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2024-11-14 02:48:16,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2024-11-14 02:48:16,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 02:48:16,932 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:48:16,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:48:16,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1904985024, now seen corresponding path program 1 times [2024-11-14 02:48:16,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:48:16,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1040133681] [2024-11-14 02:48:16,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:48:16,933 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 02:48:16,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:48:16,935 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/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 02:48:16,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-11-14 02:48:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 02:48:17,214 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-14 02:48:17,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 02:48:17,462 ERROR L246 FreeRefinementEngine]: Caught known exception: Invalid model [2024-11-14 02:48:17,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [847813] [2024-11-14 02:48:17,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:48:17,462 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 02:48:17,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 02:48:17,464 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 02:48:17,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2024-11-14 02:48:18,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:48:18,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-14 02:48:18,344 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:48:56,259 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-14 02:48:56,259 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:48:56,259 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:48:56,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1040133681] [2024-11-14 02:48:56,260 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 02:48:56,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [847813] [2024-11-14 02:48:56,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [847813] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:48:56,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:48:56,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-14 02:48:56,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428282405] [2024-11-14 02:48:56,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:48:56,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 02:48:56,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:48:56,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 02:48:56,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-11-14 02:48:56,262 INFO L87 Difference]: Start difference. First operand 270 states and 397 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-14 02:49:08,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:49:11,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:49:13,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:49:15,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:49:17,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:49:19,452 WARN L539 Checker$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 02:49:21,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:49:23,471 WARN L539 Checker$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 02:49:25,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:49:27,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:49:31,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:49:33,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:49:35,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:49:37,814 WARN L539 Checker$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 02:49:39,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:49:43,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:49:43,211 INFO L93 Difference]: Finished difference Result 347 states and 481 transitions. [2024-11-14 02:49:43,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 02:49:43,220 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 123 [2024-11-14 02:49:43,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:49:43,223 INFO L225 Difference]: With dead ends: 347 [2024-11-14 02:49:43,223 INFO L226 Difference]: Without dead ends: 345 [2024-11-14 02:49:43,224 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2024-11-14 02:49:43,225 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 74 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 1 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.6s IncrementalHoareTripleChecker+Time [2024-11-14 02:49:43,226 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 408 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 269 Invalid, 12 Unknown, 0 Unchecked, 43.6s Time] [2024-11-14 02:49:43,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2024-11-14 02:49:43,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 271. [2024-11-14 02:49:43,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 161 states have (on average 1.236024844720497) internal successors, (199), 161 states have internal predecessors, (199), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-14 02:49:43,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 399 transitions. [2024-11-14 02:49:43,284 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 399 transitions. Word has length 123 [2024-11-14 02:49:43,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:49:43,286 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 399 transitions. [2024-11-14 02:49:43,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-14 02:49:43,287 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 399 transitions. [2024-11-14 02:49:43,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-14 02:49:43,288 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:49:43,288 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:49:43,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2024-11-14 02:49:43,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2024-11-14 02:49:43,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 02:49:43,692 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:49:43,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:49:43,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1765335162, now seen corresponding path program 1 times [2024-11-14 02:49:43,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:49:43,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2017730225] [2024-11-14 02:49:43,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:49:43,694 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:49:43,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:49:43,696 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/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 02:49:43,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/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 02:49:44,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 02:49:44,003 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-14 02:49:44,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 02:49:44,283 ERROR L246 FreeRefinementEngine]: Caught known exception: Invalid model [2024-11-14 02:49:44,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [674591830] [2024-11-14 02:49:44,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:49:44,284 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 02:49:44,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 02:49:44,285 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 02:49:44,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2024-11-14 02:49:45,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:49:45,272 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-14 02:49:45,276 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:50:46,986 WARN L851 $PredicateComparison]: unable to prove that (and (= c_~var_1_19~0 c_~var_1_15~0) (= c_~var_1_12~0 c_~var_1_7~0) (= c_~var_1_20~0 ((_ sign_extend 8) c_~var_1_16~0)) (= c_~var_1_13~0 ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode c_~var_1_15~0) (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 637.0 5.0)) ((_ to_fp 11 53) c_currentRoundingMode (/ 33.0 4.0)))))) (bvslt c_~last_1_var_1_13~0 c_~var_1_19~0) (not (let ((.cse0 ((_ sign_extend 24) c_~var_1_16~0))) (bvsge (bvsdiv (bvsdiv .cse0 c_~var_1_8~0) c_~var_1_9~0) (bvor .cse0 ((_ sign_extend 16) c_~var_1_21~0))))) (not (= c_~var_1_3~0 (_ bv0 8))) (= ((_ sign_extend 8) c_~var_1_18~0) c_~var_1_21~0) (let ((.cse3 ((_ sign_extend 24) c_~var_1_17~0)) (.cse2 (bvadd ((_ sign_extend 24) c_~var_1_18~0) (_ bv4294967294 32)))) (let ((.cse1 (bvsgt .cse3 .cse2))) (or (and (not .cse1) (= c_~var_1_16~0 ((_ extract 7 0) .cse2))) (and .cse1 (= ((_ extract 7 0) .cse3) c_~var_1_16~0))))) (= (_ bv0 8) c_~var_1_2~0)) is different from false [2024-11-14 02:50:49,015 WARN L873 $PredicateComparison]: unable to prove that (and (= c_~var_1_19~0 c_~var_1_15~0) (= c_~var_1_12~0 c_~var_1_7~0) (= c_~var_1_20~0 ((_ sign_extend 8) c_~var_1_16~0)) (= c_~var_1_13~0 ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode c_~var_1_15~0) (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 637.0 5.0)) ((_ to_fp 11 53) c_currentRoundingMode (/ 33.0 4.0)))))) (bvslt c_~last_1_var_1_13~0 c_~var_1_19~0) (not (let ((.cse0 ((_ sign_extend 24) c_~var_1_16~0))) (bvsge (bvsdiv (bvsdiv .cse0 c_~var_1_8~0) c_~var_1_9~0) (bvor .cse0 ((_ sign_extend 16) c_~var_1_21~0))))) (not (= c_~var_1_3~0 (_ bv0 8))) (= ((_ sign_extend 8) c_~var_1_18~0) c_~var_1_21~0) (let ((.cse3 ((_ sign_extend 24) c_~var_1_17~0)) (.cse2 (bvadd ((_ sign_extend 24) c_~var_1_18~0) (_ bv4294967294 32)))) (let ((.cse1 (bvsgt .cse3 .cse2))) (or (and (not .cse1) (= c_~var_1_16~0 ((_ extract 7 0) .cse2))) (and .cse1 (= ((_ extract 7 0) .cse3) c_~var_1_16~0))))) (= (_ bv0 8) c_~var_1_2~0)) is different from true [2024-11-14 02:51:13,213 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-14 02:51:13,213 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:51:13,214 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:51:13,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2017730225] [2024-11-14 02:51:13,214 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 02:51:13,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [674591830] [2024-11-14 02:51:13,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [674591830] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:51:13,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:51:13,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-14 02:51:13,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586853235] [2024-11-14 02:51:13,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:51:13,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 02:51:13,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:51:13,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 02:51:13,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=37, Unknown=2, NotChecked=12, Total=72 [2024-11-14 02:51:13,216 INFO L87 Difference]: Start difference. First operand 271 states and 399 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-14 02:51:16,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:51:18,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:51:20,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:51:23,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:51:24,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:51:26,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:51:28,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:51:30,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:51:32,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:51:34,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:51:36,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:51:39,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:51:40,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:51:40,017 INFO L93 Difference]: Finished difference Result 364 states and 527 transitions. [2024-11-14 02:51:40,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 02:51:40,018 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 123 [2024-11-14 02:51:40,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:51:40,021 INFO L225 Difference]: With dead ends: 364 [2024-11-14 02:51:40,021 INFO L226 Difference]: Without dead ends: 315 [2024-11-14 02:51:40,022 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=21, Invalid=37, Unknown=2, NotChecked=12, Total=72 [2024-11-14 02:51:40,023 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 76 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 5 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 134 IncrementalHoareTripleChecker+Unchecked, 26.8s IncrementalHoareTripleChecker+Time [2024-11-14 02:51:40,024 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 375 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 115 Invalid, 9 Unknown, 134 Unchecked, 26.8s Time] [2024-11-14 02:51:40,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-11-14 02:51:40,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 295. [2024-11-14 02:51:40,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 182 states have (on average 1.2472527472527473) internal successors, (227), 183 states have internal predecessors, (227), 102 states have call successors, (102), 10 states have call predecessors, (102), 10 states have return successors, (102), 101 states have call predecessors, (102), 102 states have call successors, (102) [2024-11-14 02:51:40,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 431 transitions. [2024-11-14 02:51:40,070 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 431 transitions. Word has length 123 [2024-11-14 02:51:40,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:51:40,070 INFO L471 AbstractCegarLoop]: Abstraction has 295 states and 431 transitions. [2024-11-14 02:51:40,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-14 02:51:40,071 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 431 transitions. [2024-11-14 02:51:40,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-14 02:51:40,073 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:51:40,073 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:51:40,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/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)] Forceful destruction successful, exit code 0 [2024-11-14 02:51:40,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2024-11-14 02:51:40,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 02:51:40,474 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:51:40,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:51:40,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1767182204, now seen corresponding path program 1 times [2024-11-14 02:51:40,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:51:40,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1709679220] [2024-11-14 02:51:40,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:51:40,476 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 02:51:40,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:51:40,478 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/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 02:51:40,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-11-14 02:51:40,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 02:51:40,850 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-14 02:51:41,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 02:51:41,187 ERROR L246 FreeRefinementEngine]: Caught known exception: Invalid model [2024-11-14 02:51:41,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [960130213] [2024-11-14 02:51:41,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:51:41,188 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 02:51:41,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 02:51:41,190 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 02:51:41,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2024-11-14 02:51:42,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:51:42,300 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-14 02:51:42,303 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:52:47,079 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-14 02:52:47,079 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:52:47,079 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:52:47,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1709679220] [2024-11-14 02:52:47,079 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 02:52:47,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [960130213] [2024-11-14 02:52:47,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [960130213] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:52:47,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:52:47,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-14 02:52:47,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695175117] [2024-11-14 02:52:47,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:52:47,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 02:52:47,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:52:47,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 02:52:47,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-14 02:52:47,081 INFO L87 Difference]: Start difference. First operand 295 states and 431 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-14 02:52:51,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:52:53,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:52:55,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:52:57,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:52:59,255 WARN L539 Checker$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 02:53:01,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:53:03,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:53:05,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:53:07,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:53:09,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:53:11,897 WARN L539 Checker$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 02:53:13,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:53:15,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:53:17,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:53:19,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:53:23,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:53:25,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:53:27,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:53:30,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:53:30,176 INFO L93 Difference]: Finished difference Result 324 states and 461 transitions. [2024-11-14 02:53:30,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 02:53:30,177 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 123 [2024-11-14 02:53:30,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:53:30,180 INFO L225 Difference]: With dead ends: 324 [2024-11-14 02:53:30,180 INFO L226 Difference]: Without dead ends: 322 [2024-11-14 02:53:30,180 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-14 02:53:30,181 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 106 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 4 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.9s IncrementalHoareTripleChecker+Time [2024-11-14 02:53:30,181 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 342 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 102 Invalid, 14 Unknown, 0 Unchecked, 39.9s Time] [2024-11-14 02:53:30,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2024-11-14 02:53:30,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 295. [2024-11-14 02:53:30,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 182 states have (on average 1.2472527472527473) internal successors, (227), 183 states have internal predecessors, (227), 102 states have call successors, (102), 10 states have call predecessors, (102), 10 states have return successors, (102), 101 states have call predecessors, (102), 102 states have call successors, (102) [2024-11-14 02:53:30,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 431 transitions. [2024-11-14 02:53:30,223 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 431 transitions. Word has length 123 [2024-11-14 02:53:30,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:53:30,224 INFO L471 AbstractCegarLoop]: Abstraction has 295 states and 431 transitions. [2024-11-14 02:53:30,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-14 02:53:30,224 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 431 transitions. [2024-11-14 02:53:30,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-14 02:53:30,226 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:53:30,226 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:53:30,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2024-11-14 02:53:30,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/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)] Ended with exit code 0 [2024-11-14 02:53:30,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/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 02:53:30,627 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:53:30,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:53:30,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1708076860, now seen corresponding path program 1 times [2024-11-14 02:53:30,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:53:30,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1537548429] [2024-11-14 02:53:30,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:53:30,628 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 02:53:30,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:53:30,630 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/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 02:53:30,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/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 02:53:30,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 02:53:30,964 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-14 02:53:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 02:53:31,275 ERROR L246 FreeRefinementEngine]: Caught known exception: Invalid model [2024-11-14 02:53:31,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1789853598] [2024-11-14 02:53:31,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:53:31,275 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 02:53:31,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 02:53:31,279 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 02:53:31,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2024-11-14 02:53:32,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:53:32,315 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-14 02:53:32,318 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:54:30,435 WARN L851 $PredicateComparison]: unable to prove that (and (= c_~var_1_19~0 c_~var_1_15~0) (= c_~var_1_20~0 ((_ sign_extend 8) c_~var_1_16~0)) (= c_~var_1_13~0 ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode c_~var_1_15~0) (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 637.0 5.0)) ((_ to_fp 11 53) c_currentRoundingMode (/ 33.0 4.0)))))) (bvslt c_~last_1_var_1_13~0 c_~var_1_19~0) (not (= c_~var_1_3~0 (_ bv0 8))) (= ((_ sign_extend 8) c_~var_1_18~0) c_~var_1_21~0) (= c_~var_1_7~0 ((_ extract 7 0) (bvadd (bvneg ((_ zero_extend 24) c_~var_1_12~0)) ((_ zero_extend 24) c_~var_1_11~0)))) (let ((.cse0 ((_ sign_extend 24) c_~var_1_16~0))) (bvsge (bvsdiv (bvsdiv .cse0 c_~var_1_8~0) c_~var_1_9~0) (bvor .cse0 ((_ sign_extend 16) c_~var_1_21~0)))) (let ((.cse3 ((_ sign_extend 24) c_~var_1_17~0)) (.cse2 (bvadd ((_ sign_extend 24) c_~var_1_18~0) (_ bv4294967294 32)))) (let ((.cse1 (bvsgt .cse3 .cse2))) (or (and (not .cse1) (= c_~var_1_16~0 ((_ extract 7 0) .cse2))) (and .cse1 (= ((_ extract 7 0) .cse3) c_~var_1_16~0))))) (= (_ bv0 8) c_~var_1_2~0)) is different from false [2024-11-14 02:54:32,469 WARN L873 $PredicateComparison]: unable to prove that (and (= c_~var_1_19~0 c_~var_1_15~0) (= c_~var_1_20~0 ((_ sign_extend 8) c_~var_1_16~0)) (= c_~var_1_13~0 ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode c_~var_1_15~0) (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 637.0 5.0)) ((_ to_fp 11 53) c_currentRoundingMode (/ 33.0 4.0)))))) (bvslt c_~last_1_var_1_13~0 c_~var_1_19~0) (not (= c_~var_1_3~0 (_ bv0 8))) (= ((_ sign_extend 8) c_~var_1_18~0) c_~var_1_21~0) (= c_~var_1_7~0 ((_ extract 7 0) (bvadd (bvneg ((_ zero_extend 24) c_~var_1_12~0)) ((_ zero_extend 24) c_~var_1_11~0)))) (let ((.cse0 ((_ sign_extend 24) c_~var_1_16~0))) (bvsge (bvsdiv (bvsdiv .cse0 c_~var_1_8~0) c_~var_1_9~0) (bvor .cse0 ((_ sign_extend 16) c_~var_1_21~0)))) (let ((.cse3 ((_ sign_extend 24) c_~var_1_17~0)) (.cse2 (bvadd ((_ sign_extend 24) c_~var_1_18~0) (_ bv4294967294 32)))) (let ((.cse1 (bvsgt .cse3 .cse2))) (or (and (not .cse1) (= c_~var_1_16~0 ((_ extract 7 0) .cse2))) (and .cse1 (= ((_ extract 7 0) .cse3) c_~var_1_16~0))))) (= (_ bv0 8) c_~var_1_2~0)) is different from true [2024-11-14 02:55:05,531 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-14 02:55:05,531 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:55:05,531 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:55:05,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1537548429] [2024-11-14 02:55:05,531 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 02:55:05,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1789853598] [2024-11-14 02:55:05,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1789853598] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:55:05,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:55:05,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-14 02:55:05,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730537763] [2024-11-14 02:55:05,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:55:05,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 02:55:05,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:55:05,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 02:55:05,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=37, Unknown=2, NotChecked=12, Total=72 [2024-11-14 02:55:05,533 INFO L87 Difference]: Start difference. First operand 295 states and 431 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-14 02:55:12,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:55:14,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:55:16,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:55:18,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:55:20,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:55:22,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:55:24,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:55:26,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:55:28,183 WARN L539 Checker$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 02:55:30,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:55:32,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:55:34,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:55:36,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:55:38,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:55:39,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:55:41,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:55:44,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:55:45,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:55:45,497 INFO L93 Difference]: Finished difference Result 324 states and 461 transitions. [2024-11-14 02:55:45,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 02:55:45,498 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 123 [2024-11-14 02:55:45,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:55:45,501 INFO L225 Difference]: With dead ends: 324 [2024-11-14 02:55:45,502 INFO L226 Difference]: Without dead ends: 322 [2024-11-14 02:55:45,502 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=21, Invalid=37, Unknown=2, NotChecked=12, Total=72 [2024-11-14 02:55:45,503 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 50 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 0 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 132 IncrementalHoareTripleChecker+Unchecked, 39.9s IncrementalHoareTripleChecker+Time [2024-11-14 02:55:45,503 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 426 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 179 Invalid, 13 Unknown, 132 Unchecked, 39.9s Time] [2024-11-14 02:55:45,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2024-11-14 02:55:45,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 296. [2024-11-14 02:55:45,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 183 states have (on average 1.2513661202185793) internal successors, (229), 184 states have internal predecessors, (229), 102 states have call successors, (102), 10 states have call predecessors, (102), 10 states have return successors, (102), 101 states have call predecessors, (102), 102 states have call successors, (102) [2024-11-14 02:55:45,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 433 transitions. [2024-11-14 02:55:45,542 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 433 transitions. Word has length 123 [2024-11-14 02:55:45,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:55:45,543 INFO L471 AbstractCegarLoop]: Abstraction has 296 states and 433 transitions. [2024-11-14 02:55:45,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-14 02:55:45,543 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 433 transitions. [2024-11-14 02:55:45,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-14 02:55:45,545 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:55:45,545 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:55:45,555 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2024-11-14 02:55:45,761 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/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 02:55:45,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/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 02:55:45,946 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:55:45,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:55:45,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1709923902, now seen corresponding path program 1 times [2024-11-14 02:55:45,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:55:45,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1218633001] [2024-11-14 02:55:45,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:55:45,947 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 02:55:45,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:55:45,950 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/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 02:55:45,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/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 02:55:46,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 02:55:46,263 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-14 02:55:46,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 02:55:46,559 ERROR L246 FreeRefinementEngine]: Caught known exception: Invalid model [2024-11-14 02:55:46,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [766646912] [2024-11-14 02:55:46,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:55:46,559 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 02:55:46,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 02:55:46,561 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 02:55:46,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e97b2e-6aaf-450b-adf7-9d1ce70f6ba6/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2024-11-14 02:55:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:55:47,597 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-14 02:55:47,601 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:57:16,081 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-14 02:57:16,082 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:57:16,082 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:57:16,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1218633001] [2024-11-14 02:57:16,082 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 02:57:16,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [766646912] [2024-11-14 02:57:16,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [766646912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:57:16,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:57:16,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-14 02:57:16,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752003263] [2024-11-14 02:57:16,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:57:16,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 02:57:16,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:57:16,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 02:57:16,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-14 02:57:16,084 INFO L87 Difference]: Start difference. First operand 296 states and 433 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20)