./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-33.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-33.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ --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 8c657d494f862b4e748f718e9b06d9431fa0d9b5ab160606f6187c22952013a2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:25:22,803 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:25:22,911 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 05:25:22,917 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:25:22,918 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:25:22,962 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:25:22,963 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:25:22,964 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:25:22,966 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:25:22,972 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:25:22,972 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:25:22,973 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:25:22,974 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:25:22,976 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:25:22,976 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:25:22,977 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:25:22,977 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:25:22,978 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:25:22,978 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:25:22,979 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:25:22,979 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:25:22,980 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:25:22,981 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:25:22,982 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:25:22,983 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:25:22,983 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:25:22,984 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:25:22,984 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:25:22,984 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:25:22,985 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:25:22,987 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:25:22,987 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:25:22,987 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:25:22,988 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:25:22,988 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:25:22,988 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:25:22,989 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:25:22,989 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:25:22,989 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:25:22,990 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:25:22,990 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:25:22,995 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:25:22,995 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:25:22,995 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:25:22,996 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:25:22,996 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c657d494f862b4e748f718e9b06d9431fa0d9b5ab160606f6187c22952013a2 [2023-11-19 05:25:23,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:25:23,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:25:23,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:25:23,399 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:25:23,399 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:25:23,403 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-33.i [2023-11-19 05:25:27,016 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:25:27,389 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:25:27,390 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-33.i [2023-11-19 05:25:27,401 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/data/b5afe0853/0cb7d1b4567d4ec59f15e8ae75e64721/FLAGe31677baa [2023-11-19 05:25:27,419 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/data/b5afe0853/0cb7d1b4567d4ec59f15e8ae75e64721 [2023-11-19 05:25:27,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:25:27,424 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:25:27,426 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:25:27,426 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:25:27,433 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:25:27,434 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:25:27" (1/1) ... [2023-11-19 05:25:27,436 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aeca179 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:27, skipping insertion in model container [2023-11-19 05:25:27,436 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:25:27" (1/1) ... [2023-11-19 05:25:27,468 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:25:27,640 WARN L240 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_9953634f-a97f-4721-bfde-7df4ef71c685/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-33.i[917,930] [2023-11-19 05:25:27,707 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:25:27,720 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:25:27,736 WARN L240 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_9953634f-a97f-4721-bfde-7df4ef71c685/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-33.i[917,930] [2023-11-19 05:25:27,767 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:25:27,788 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:25:27,789 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:27 WrapperNode [2023-11-19 05:25:27,789 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:25:27,790 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:25:27,791 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:25:27,791 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:25:27,800 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:27" (1/1) ... [2023-11-19 05:25:27,813 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:27" (1/1) ... [2023-11-19 05:25:27,867 INFO L138 Inliner]: procedures = 26, calls = 22, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 166 [2023-11-19 05:25:27,868 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:25:27,869 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:25:27,869 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:25:27,869 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:25:27,881 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:27" (1/1) ... [2023-11-19 05:25:27,882 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:27" (1/1) ... [2023-11-19 05:25:27,886 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:27" (1/1) ... [2023-11-19 05:25:27,886 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:27" (1/1) ... [2023-11-19 05:25:27,897 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:27" (1/1) ... [2023-11-19 05:25:27,902 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:27" (1/1) ... [2023-11-19 05:25:27,904 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:27" (1/1) ... [2023-11-19 05:25:27,907 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:27" (1/1) ... [2023-11-19 05:25:27,912 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:25:27,913 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:25:27,913 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:25:27,914 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:25:27,915 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:27" (1/1) ... [2023-11-19 05:25:27,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:25:27,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:25:27,976 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:25:28,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:25:28,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:25:28,034 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 05:25:28,035 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 05:25:28,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:25:28,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:25:28,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:25:28,180 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:25:28,184 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:25:28,702 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:25:29,238 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:25:29,238 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:25:29,248 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:25:29 BoogieIcfgContainer [2023-11-19 05:25:29,248 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:25:29,254 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:25:29,254 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:25:29,258 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:25:29,258 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:25:27" (1/3) ... [2023-11-19 05:25:29,260 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f22647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:25:29, skipping insertion in model container [2023-11-19 05:25:29,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:27" (2/3) ... [2023-11-19 05:25:29,265 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f22647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:25:29, skipping insertion in model container [2023-11-19 05:25:29,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:25:29" (3/3) ... [2023-11-19 05:25:29,267 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_has-floats_file-33.i [2023-11-19 05:25:29,286 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:25:29,286 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:25:29,343 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:25:29,351 INFO L357 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, mHoare=true, 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;@75f13217, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:25:29,352 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:25:29,356 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 05:25:29,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-19 05:25:29,367 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:25:29,368 INFO L195 NwaCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:25:29,369 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:25:29,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:25:29,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1962875480, now seen corresponding path program 1 times [2023-11-19 05:25:29,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:25:29,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60163361] [2023-11-19 05:25:29,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:29,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:25:29,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:25:29,861 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 05:25:30,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:25:30,049 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 05:25:30,052 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 05:25:30,053 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 05:25:30,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:25:30,062 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 05:25:30,068 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:25:30,123 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:25:30 BoogieIcfgContainer [2023-11-19 05:25:30,123 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:25:30,124 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:25:30,124 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:25:30,125 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:25:30,125 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:25:29" (3/4) ... [2023-11-19 05:25:30,128 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 05:25:30,134 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:25:30,136 INFO L158 Benchmark]: Toolchain (without parser) took 2711.07ms. Allocated memory was 142.6MB in the beginning and 188.7MB in the end (delta: 46.1MB). Free memory was 111.2MB in the beginning and 114.7MB in the end (delta: -3.4MB). Peak memory consumption was 45.0MB. Max. memory is 16.1GB. [2023-11-19 05:25:30,137 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 142.6MB. Free memory is still 114.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:25:30,139 INFO L158 Benchmark]: CACSL2BoogieTranslator took 363.63ms. Allocated memory is still 142.6MB. Free memory was 110.7MB in the beginning and 98.3MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 05:25:30,140 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.80ms. Allocated memory is still 142.6MB. Free memory was 98.3MB in the beginning and 95.2MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 05:25:30,141 INFO L158 Benchmark]: Boogie Preprocessor took 43.32ms. Allocated memory is still 142.6MB. Free memory was 95.2MB in the beginning and 93.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:25:30,144 INFO L158 Benchmark]: RCFGBuilder took 1335.49ms. Allocated memory was 142.6MB in the beginning and 188.7MB in the end (delta: 46.1MB). Free memory was 93.6MB in the beginning and 147.2MB in the end (delta: -53.6MB). Peak memory consumption was 57.5MB. Max. memory is 16.1GB. [2023-11-19 05:25:30,148 INFO L158 Benchmark]: TraceAbstraction took 869.72ms. Allocated memory is still 188.7MB. Free memory was 146.1MB in the beginning and 114.7MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2023-11-19 05:25:30,150 INFO L158 Benchmark]: Witness Printer took 10.13ms. Allocated memory is still 188.7MB. Free memory is still 114.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:25:30,154 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 142.6MB. Free memory is still 114.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 363.63ms. Allocated memory is still 142.6MB. Free memory was 110.7MB in the beginning and 98.3MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.80ms. Allocated memory is still 142.6MB. Free memory was 98.3MB in the beginning and 95.2MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.32ms. Allocated memory is still 142.6MB. Free memory was 95.2MB in the beginning and 93.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1335.49ms. Allocated memory was 142.6MB in the beginning and 188.7MB in the end (delta: 46.1MB). Free memory was 93.6MB in the beginning and 147.2MB in the end (delta: -53.6MB). Peak memory consumption was 57.5MB. Max. memory is 16.1GB. * TraceAbstraction took 869.72ms. Allocated memory is still 188.7MB. Free memory was 146.1MB in the beginning and 114.7MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Witness Printer took 10.13ms. Allocated memory is still 188.7MB. Free memory is still 114.7MB. 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 someBinaryFLOATComparisonOperation at line 60, overapproximation of bitwiseOr at line 53, overapproximation of someUnaryDOUBLEoperation at line 27, overapproximation of bitwiseAnd at line 59, overapproximation of someUnaryFLOAToperation at line 60, overapproximation of someBinaryArithmeticFLOAToperation at line 60. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] signed short int var_1_1 = -10; [L23] signed short int var_1_5 = 4; [L24] unsigned char var_1_7 = 200; [L25] unsigned char var_1_8 = 32; [L26] float var_1_9 = 256.5; [L27] float var_1_10 = -0.25; [L28] float var_1_11 = 0.30000000000000004; [L29] float var_1_12 = 49.5; [L30] signed long int var_1_13 = -8; [L31] unsigned char var_1_14 = 0; [L32] float var_1_15 = 0.4; [L33] signed long int var_1_16 = -256; [L34] signed long int last_1_var_1_13 = -8; [L88] isInitial = 1 [L89] FCALL initially() [L90] COND TRUE 1 [L91] CALL updateLastVariables() [L81] last_1_var_1_13 = var_1_13 [L91] RET updateLastVariables() [L92] CALL updateVariables() [L64] var_1_5 = __VERIFIER_nondet_short() [L65] CALL assume_abort_if_not(var_1_5 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=-8, var_1_11=7500000000000001/25000000000000000, var_1_12=99/2, var_1_13=-8, var_1_14=0, var_1_15=2/5, var_1_16=-256, var_1_1=-10, var_1_5=16383, var_1_7=200, var_1_8=32, var_1_9=513/2] [L20] COND FALSE !(!cond) [L65] RET assume_abort_if_not(var_1_5 >= 0) VAL [isInitial=1, last_1_var_1_13=-8, var_1_11=7500000000000001/25000000000000000, var_1_12=99/2, var_1_13=-8, var_1_14=0, var_1_15=2/5, var_1_16=-256, var_1_1=-10, var_1_5=16383, var_1_7=200, var_1_8=32, var_1_9=513/2] [L66] CALL assume_abort_if_not(var_1_5 <= 16383) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=-8, var_1_11=7500000000000001/25000000000000000, var_1_12=99/2, var_1_13=-8, var_1_14=0, var_1_15=2/5, var_1_16=-256, var_1_1=-10, var_1_5=16383, var_1_7=200, var_1_8=32, var_1_9=513/2] [L20] COND FALSE !(!cond) [L66] RET assume_abort_if_not(var_1_5 <= 16383) VAL [isInitial=1, last_1_var_1_13=-8, var_1_11=7500000000000001/25000000000000000, var_1_12=99/2, var_1_13=-8, var_1_14=0, var_1_15=2/5, var_1_16=-256, var_1_1=-10, var_1_5=16383, var_1_7=200, var_1_8=32, var_1_9=513/2] [L67] var_1_8 = __VERIFIER_nondet_uchar() [L68] CALL assume_abort_if_not(var_1_8 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=-8, var_1_11=7500000000000001/25000000000000000, var_1_12=99/2, var_1_13=-8, var_1_14=0, var_1_15=2/5, var_1_16=-256, var_1_1=-10, var_1_5=16383, var_1_7=200, var_1_8=0, var_1_9=513/2] [L20] COND FALSE !(!cond) [L68] RET assume_abort_if_not(var_1_8 >= 0) VAL [isInitial=1, last_1_var_1_13=-8, var_1_11=7500000000000001/25000000000000000, var_1_12=99/2, var_1_13=-8, var_1_14=0, var_1_15=2/5, var_1_16=-256, var_1_1=-10, var_1_5=16383, var_1_7=200, var_1_8=0, var_1_9=513/2] [L69] CALL assume_abort_if_not(var_1_8 <= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=-8, var_1_11=7500000000000001/25000000000000000, var_1_12=99/2, var_1_13=-8, var_1_14=0, var_1_15=2/5, var_1_16=-256, var_1_1=-10, var_1_5=16383, var_1_7=200, var_1_8=0, var_1_9=513/2] [L20] COND FALSE !(!cond) [L69] RET assume_abort_if_not(var_1_8 <= 127) VAL [isInitial=1, last_1_var_1_13=-8, var_1_11=7500000000000001/25000000000000000, var_1_12=99/2, var_1_13=-8, var_1_14=0, var_1_15=2/5, var_1_16=-256, var_1_1=-10, var_1_5=16383, var_1_7=200, var_1_8=0, var_1_9=513/2] [L70] var_1_10 = __VERIFIER_nondet_float() [L71] CALL assume_abort_if_not((var_1_10 >= -461168.6018427382800e+13F && var_1_10 <= -1.0e-20F) || (var_1_10 <= 4611686.018427382800e+12F && var_1_10 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=-8, var_1_10=16390, var_1_11=7500000000000001/25000000000000000, var_1_12=99/2, var_1_13=-8, var_1_14=0, var_1_15=2/5, var_1_16=-256, var_1_1=-10, var_1_5=16383, var_1_7=200, var_1_8=0, var_1_9=513/2] [L20] COND FALSE !(!cond) [L71] RET assume_abort_if_not((var_1_10 >= -461168.6018427382800e+13F && var_1_10 <= -1.0e-20F) || (var_1_10 <= 4611686.018427382800e+12F && var_1_10 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_13=-8, var_1_10=16390, var_1_11=7500000000000001/25000000000000000, var_1_12=99/2, var_1_13=-8, var_1_14=0, var_1_15=2/5, var_1_16=-256, var_1_1=-10, var_1_5=16383, var_1_7=200, var_1_8=0, var_1_9=513/2] [L72] var_1_11 = __VERIFIER_nondet_float() [L73] CALL assume_abort_if_not((var_1_11 >= 0.0F && var_1_11 <= -1.0e-20F) || (var_1_11 <= 4611686.018427382800e+12F && var_1_11 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=-8, var_1_10=16390, var_1_11=16388, var_1_12=99/2, var_1_13=-8, var_1_14=0, var_1_15=2/5, var_1_16=-256, var_1_1=-10, var_1_5=16383, var_1_7=200, var_1_8=0, var_1_9=513/2] [L20] COND FALSE !(!cond) [L73] RET assume_abort_if_not((var_1_11 >= 0.0F && var_1_11 <= -1.0e-20F) || (var_1_11 <= 4611686.018427382800e+12F && var_1_11 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_13=-8, var_1_10=16390, var_1_11=16388, var_1_12=99/2, var_1_13=-8, var_1_14=0, var_1_15=2/5, var_1_16=-256, var_1_1=-10, var_1_5=16383, var_1_7=200, var_1_8=0, var_1_9=513/2] [L74] var_1_12 = __VERIFIER_nondet_float() [L75] CALL assume_abort_if_not((var_1_12 >= 0.0F && var_1_12 <= -1.0e-20F) || (var_1_12 <= 4611686.018427382800e+12F && var_1_12 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=-8, var_1_10=16390, var_1_11=16388, var_1_12=16389, var_1_13=-8, var_1_14=0, var_1_15=2/5, var_1_16=-256, var_1_1=-10, var_1_5=16383, var_1_7=200, var_1_8=0, var_1_9=513/2] [L20] COND FALSE !(!cond) [L75] RET assume_abort_if_not((var_1_12 >= 0.0F && var_1_12 <= -1.0e-20F) || (var_1_12 <= 4611686.018427382800e+12F && var_1_12 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_13=-8, var_1_10=16390, var_1_11=16388, var_1_12=16389, var_1_13=-8, var_1_14=0, var_1_15=2/5, var_1_16=-256, var_1_1=-10, var_1_5=16383, var_1_7=200, var_1_8=0, var_1_9=513/2] [L76] var_1_14 = __VERIFIER_nondet_uchar() [L77] CALL assume_abort_if_not(var_1_14 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=-8, var_1_10=16390, var_1_11=16388, var_1_12=16389, var_1_13=-8, var_1_14=0, var_1_15=2/5, var_1_16=-256, var_1_1=-10, var_1_5=16383, var_1_7=200, var_1_8=0, var_1_9=513/2] [L20] COND FALSE !(!cond) [L77] RET assume_abort_if_not(var_1_14 >= 0) VAL [isInitial=1, last_1_var_1_13=-8, var_1_10=16390, var_1_11=16388, var_1_12=16389, var_1_13=-8, var_1_14=0, var_1_15=2/5, var_1_16=-256, var_1_1=-10, var_1_5=16383, var_1_7=200, var_1_8=0, var_1_9=513/2] [L78] CALL assume_abort_if_not(var_1_14 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=-8, var_1_10=16390, var_1_11=16388, var_1_12=16389, var_1_13=-8, var_1_14=0, var_1_15=2/5, var_1_16=-256, var_1_1=-10, var_1_5=16383, var_1_7=200, var_1_8=0, var_1_9=513/2] [L20] COND FALSE !(!cond) [L78] RET assume_abort_if_not(var_1_14 <= 1) VAL [isInitial=1, last_1_var_1_13=-8, var_1_10=16390, var_1_11=16388, var_1_12=16389, var_1_13=-8, var_1_14=0, var_1_15=2/5, var_1_16=-256, var_1_1=-10, var_1_5=16383, var_1_7=200, var_1_8=0, var_1_9=513/2] [L92] RET updateVariables() [L93] CALL step() [L38] COND FALSE !(var_1_5 < last_1_var_1_13) [L41] var_1_16 = var_1_7 [L42] unsigned char stepLocal_1 = var_1_7; [L43] COND TRUE ! var_1_14 [L44] var_1_13 = var_1_8 [L52] var_1_15 = var_1_11 [L53] EXPR var_1_13 ^ var_1_7 [L53] signed long int stepLocal_0 = (var_1_13 ^ var_1_7) + var_1_16; [L54] COND FALSE !(stepLocal_0 < -1) [L57] var_1_1 = (128 - (var_1_7 + var_1_7)) [L59] EXPR var_1_7 | var_1_16 [L59] EXPR var_1_13 & (var_1_7 | var_1_16) [L59] COND FALSE !(var_1_7 < (var_1_13 & (var_1_7 | var_1_16))) [L93] RET step() [L94] CALL, EXPR property() [L84] EXPR var_1_13 ^ var_1_7 [L84] EXPR (((((var_1_13 ^ var_1_7) + var_1_16) < -1) ? (var_1_1 == ((signed short int) 8)) : (var_1_1 == ((signed short int) (128 - (var_1_7 + var_1_7))))) && ((var_1_5 < last_1_var_1_13) ? (var_1_7 == ((unsigned char) (var_1_8 + 1))) : 1)) && ((var_1_7 < (var_1_13 & (var_1_7 | var_1_16))) ? (var_1_9 == ((float) ((((var_1_10 + (var_1_11 - var_1_12)) < 0 ) ? -(var_1_10 + (var_1_11 - var_1_12)) : (var_1_10 + (var_1_11 - var_1_12)))))) : 1) [L84] EXPR var_1_7 | var_1_16 [L84] EXPR var_1_13 & (var_1_7 | var_1_16) [L84] EXPR (((((var_1_13 ^ var_1_7) + var_1_16) < -1) ? (var_1_1 == ((signed short int) 8)) : (var_1_1 == ((signed short int) (128 - (var_1_7 + var_1_7))))) && ((var_1_5 < last_1_var_1_13) ? (var_1_7 == ((unsigned char) (var_1_8 + 1))) : 1)) && ((var_1_7 < (var_1_13 & (var_1_7 | var_1_16))) ? (var_1_9 == ((float) ((((var_1_10 + (var_1_11 - var_1_12)) < 0 ) ? -(var_1_10 + (var_1_11 - var_1_12)) : (var_1_10 + (var_1_11 - var_1_12)))))) : 1) [L84-L85] return ((((((((var_1_13 ^ var_1_7) + var_1_16) < -1) ? (var_1_1 == ((signed short int) 8)) : (var_1_1 == ((signed short int) (128 - (var_1_7 + var_1_7))))) && ((var_1_5 < last_1_var_1_13) ? (var_1_7 == ((unsigned char) (var_1_8 + 1))) : 1)) && ((var_1_7 < (var_1_13 & (var_1_7 | var_1_16))) ? (var_1_9 == ((float) ((((var_1_10 + (var_1_11 - var_1_12)) < 0 ) ? -(var_1_10 + (var_1_11 - var_1_12)) : (var_1_10 + (var_1_11 - var_1_12)))))) : 1)) && ((! var_1_14) ? (var_1_13 == ((signed long int) var_1_8)) : ((var_1_7 > (var_1_7 + var_1_7)) ? (var_1_13 == ((signed long int) var_1_7)) : (var_1_13 == ((signed long int) var_1_16))))) && (var_1_15 == ((float) var_1_11))) && (var_1_16 == ((signed long int) var_1_7)) ; [L94] RET, EXPR property() [L94] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_13=-8, var_1_10=16390, var_1_11=16388, var_1_12=16389, var_1_13=0, var_1_14=0, var_1_15=16388, var_1_16=200, var_1_1=-272, var_1_5=16383, var_1_7=200, var_1_8=0, var_1_9=513/2] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_13=-8, var_1_10=16390, var_1_11=16388, var_1_12=16389, var_1_13=0, var_1_14=0, var_1_15=16388, var_1_16=200, var_1_1=-272, var_1_5=16383, var_1_7=200, var_1_8=0, var_1_9=513/2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 9, 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=24occurred 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, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 05:25:30,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-33.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ --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 8c657d494f862b4e748f718e9b06d9431fa0d9b5ab160606f6187c22952013a2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:25:33,292 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:25:33,447 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-19 05:25:33,458 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:25:33,459 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:25:33,516 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:25:33,517 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:25:33,518 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:25:33,519 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:25:33,525 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:25:33,526 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:25:33,526 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:25:33,527 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:25:33,529 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:25:33,530 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:25:33,530 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:25:33,532 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:25:33,532 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:25:33,533 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:25:33,533 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:25:33,534 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:25:33,535 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:25:33,535 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:25:33,536 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:25:33,536 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:25:33,537 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 05:25:33,537 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 05:25:33,538 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:25:33,538 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:25:33,539 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:25:33,540 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:25:33,541 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 05:25:33,542 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:25:33,542 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:25:33,543 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:25:33,543 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:25:33,543 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:25:33,544 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 05:25:33,544 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 05:25:33,545 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:25:33,546 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:25:33,546 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:25:33,546 INFO L153 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c657d494f862b4e748f718e9b06d9431fa0d9b5ab160606f6187c22952013a2 [2023-11-19 05:25:34,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:25:34,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:25:34,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:25:34,120 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:25:34,124 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:25:34,126 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-33.i [2023-11-19 05:25:37,823 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:25:38,184 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:25:38,185 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-33.i [2023-11-19 05:25:38,196 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/data/c1b6b84b8/ae70b29ce3b444e68700f6d6af7fe45e/FLAG6a1d5c608 [2023-11-19 05:25:38,214 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/data/c1b6b84b8/ae70b29ce3b444e68700f6d6af7fe45e [2023-11-19 05:25:38,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:25:38,220 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:25:38,221 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:25:38,222 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:25:38,229 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:25:38,230 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:25:38" (1/1) ... [2023-11-19 05:25:38,231 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38a3cc18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:38, skipping insertion in model container [2023-11-19 05:25:38,232 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:25:38" (1/1) ... [2023-11-19 05:25:38,264 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:25:38,479 WARN L240 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_9953634f-a97f-4721-bfde-7df4ef71c685/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-33.i[917,930] [2023-11-19 05:25:38,567 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:25:38,596 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:25:38,618 WARN L240 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_9953634f-a97f-4721-bfde-7df4ef71c685/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-33.i[917,930] [2023-11-19 05:25:38,658 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:25:38,689 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:25:38,691 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:38 WrapperNode [2023-11-19 05:25:38,695 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:25:38,696 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:25:38,697 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:25:38,697 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:25:38,706 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:38" (1/1) ... [2023-11-19 05:25:38,737 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:38" (1/1) ... [2023-11-19 05:25:38,783 INFO L138 Inliner]: procedures = 27, calls = 22, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 91 [2023-11-19 05:25:38,786 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:25:38,787 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:25:38,788 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:25:38,788 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:25:38,800 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:38" (1/1) ... [2023-11-19 05:25:38,800 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:38" (1/1) ... [2023-11-19 05:25:38,818 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:38" (1/1) ... [2023-11-19 05:25:38,819 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:38" (1/1) ... [2023-11-19 05:25:38,839 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:38" (1/1) ... [2023-11-19 05:25:38,850 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:38" (1/1) ... [2023-11-19 05:25:38,855 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:38" (1/1) ... [2023-11-19 05:25:38,869 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:38" (1/1) ... [2023-11-19 05:25:38,873 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:25:38,874 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:25:38,875 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:25:38,875 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:25:38,876 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:38" (1/1) ... [2023-11-19 05:25:38,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:25:38,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:25:38,918 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:25:38,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:25:38,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:25:38,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 05:25:38,979 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 05:25:38,980 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 05:25:38,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:25:38,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:25:39,134 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:25:39,136 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:25:40,231 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:25:40,241 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:25:40,241 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:25:40,246 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:25:40 BoogieIcfgContainer [2023-11-19 05:25:40,246 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:25:40,249 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:25:40,249 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:25:40,253 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:25:40,254 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:25:38" (1/3) ... [2023-11-19 05:25:40,255 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea75f65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:25:40, skipping insertion in model container [2023-11-19 05:25:40,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:38" (2/3) ... [2023-11-19 05:25:40,256 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea75f65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:25:40, skipping insertion in model container [2023-11-19 05:25:40,256 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:25:40" (3/3) ... [2023-11-19 05:25:40,258 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_has-floats_file-33.i [2023-11-19 05:25:40,282 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:25:40,282 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:25:40,336 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:25:40,344 INFO L357 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, mHoare=true, 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;@162219f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:25:40,345 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:25:40,350 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 30 states have internal predecessors, (39), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 05:25:40,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-19 05:25:40,363 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:25:40,364 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:25:40,365 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:25:40,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:25:40,372 INFO L85 PathProgramCache]: Analyzing trace with hash -222403520, now seen corresponding path program 1 times [2023-11-19 05:25:40,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:25:40,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1151830870] [2023-11-19 05:25:40,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:40,391 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 [2023-11-19 05:25:40,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:25:40,411 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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) [2023-11-19 05:25:40,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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 [2023-11-19 05:25:40,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:25:40,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 05:25:40,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:25:40,792 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-19 05:25:40,793 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:25:40,794 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:25:40,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1151830870] [2023-11-19 05:25:40,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1151830870] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:25:40,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:25:40,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:25:40,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434405235] [2023-11-19 05:25:40,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:25:40,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 05:25:40,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:25:40,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 05:25:40,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:25:40,858 INFO L87 Difference]: Start difference. First operand has 41 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 30 states have internal predecessors, (39), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 05:25:40,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:25:40,912 INFO L93 Difference]: Finished difference Result 75 states and 117 transitions. [2023-11-19 05:25:40,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 05:25:40,914 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 66 [2023-11-19 05:25:40,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:25:40,923 INFO L225 Difference]: With dead ends: 75 [2023-11-19 05:25:40,924 INFO L226 Difference]: Without dead ends: 37 [2023-11-19 05:25:40,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:25:40,933 INFO L413 NwaCegarLoop]: 50 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, 50 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 [2023-11-19 05:25:40,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:25:40,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-19 05:25:41,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-11-19 05:25:41,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 05:25:41,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 50 transitions. [2023-11-19 05:25:41,016 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 50 transitions. Word has length 66 [2023-11-19 05:25:41,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:25:41,017 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 50 transitions. [2023-11-19 05:25:41,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 05:25:41,018 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 50 transitions. [2023-11-19 05:25:41,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-19 05:25:41,027 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:25:41,027 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:25:41,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:25:41,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:25:41,236 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:25:41,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:25:41,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1057703046, now seen corresponding path program 1 times [2023-11-19 05:25:41,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:25:41,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2091644786] [2023-11-19 05:25:41,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:41,241 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 [2023-11-19 05:25:41,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:25:41,243 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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) [2023-11-19 05:25:41,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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 [2023-11-19 05:25:41,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:25:41,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 05:25:41,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:25:42,483 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-19 05:25:42,483 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:25:42,743 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:25:42,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2091644786] [2023-11-19 05:25:42,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2091644786] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:25:42,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [522192338] [2023-11-19 05:25:42,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:42,747 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 05:25:42,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 05:25:42,754 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 05:25:42,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-11-19 05:25:43,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:25:43,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:25:43,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:25:43,595 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-19 05:25:43,596 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:25:43,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [522192338] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:25:43,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:25:43,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-11-19 05:25:43,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877240072] [2023-11-19 05:25:43,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:25:43,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:25:43,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:25:43,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:25:43,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-19 05:25:43,602 INFO L87 Difference]: Start difference. First operand 37 states and 50 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 05:25:44,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:25:44,157 INFO L93 Difference]: Finished difference Result 96 states and 133 transitions. [2023-11-19 05:25:44,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:25:44,160 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 66 [2023-11-19 05:25:44,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:25:44,163 INFO L225 Difference]: With dead ends: 96 [2023-11-19 05:25:44,163 INFO L226 Difference]: Without dead ends: 62 [2023-11-19 05:25:44,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-11-19 05:25:44,168 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 43 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:25:44,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 210 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 05:25:44,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-11-19 05:25:44,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 37. [2023-11-19 05:25:44,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 05:25:44,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2023-11-19 05:25:44,193 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 66 [2023-11-19 05:25:44,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:25:44,195 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2023-11-19 05:25:44,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 05:25:44,195 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2023-11-19 05:25:44,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-19 05:25:44,198 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:25:44,199 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:25:44,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2023-11-19 05:25:44,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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 [2023-11-19 05:25:44,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:25:44,605 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:25:44,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:25:44,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1116808390, now seen corresponding path program 1 times [2023-11-19 05:25:44,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:25:44,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1597946551] [2023-11-19 05:25:44,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:44,607 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 [2023-11-19 05:25:44,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:25:44,613 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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) [2023-11-19 05:25:44,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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 [2023-11-19 05:25:44,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:25:44,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 05:25:44,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:25:45,537 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-19 05:25:45,537 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:25:45,754 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:25:45,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1597946551] [2023-11-19 05:25:45,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1597946551] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:25:45,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2052484055] [2023-11-19 05:25:45,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:45,755 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 05:25:45,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 05:25:45,757 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 05:25:45,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-11-19 05:25:46,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:25:46,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 05:25:46,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:25:46,978 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-19 05:25:46,979 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:25:47,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2052484055] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:25:47,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709718007] [2023-11-19 05:25:47,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:47,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:25:47,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:25:47,121 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:25:47,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 05:25:47,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:25:47,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 05:25:47,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:25:47,798 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-19 05:25:47,799 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:25:47,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709718007] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:25:47,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:25:47,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2023-11-19 05:25:47,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54976020] [2023-11-19 05:25:47,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:25:47,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 05:25:47,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:25:47,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 05:25:47,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-19 05:25:47,952 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 05:25:49,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:25:49,262 INFO L93 Difference]: Finished difference Result 112 states and 144 transitions. [2023-11-19 05:25:49,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 05:25:49,274 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 66 [2023-11-19 05:25:49,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:25:49,277 INFO L225 Difference]: With dead ends: 112 [2023-11-19 05:25:49,277 INFO L226 Difference]: Without dead ends: 78 [2023-11-19 05:25:49,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=152, Unknown=0, NotChecked=0, Total=240 [2023-11-19 05:25:49,280 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 34 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:25:49,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 200 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-19 05:25:49,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-11-19 05:25:49,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 63. [2023-11-19 05:25:49,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 41 states have internal predecessors, (45), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-19 05:25:49,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 81 transitions. [2023-11-19 05:25:49,306 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 81 transitions. Word has length 66 [2023-11-19 05:25:49,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:25:49,307 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 81 transitions. [2023-11-19 05:25:49,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 05:25:49,307 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 81 transitions. [2023-11-19 05:25:49,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-19 05:25:49,315 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:25:49,316 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:25:49,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-19 05:25:49,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 05:25:49,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2023-11-19 05:25:49,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt [2023-11-19 05:25:49,917 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:25:49,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:25:49,918 INFO L85 PathProgramCache]: Analyzing trace with hash 723781380, now seen corresponding path program 1 times [2023-11-19 05:25:49,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:25:49,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [191766817] [2023-11-19 05:25:49,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:49,919 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 [2023-11-19 05:25:49,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:25:49,921 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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) [2023-11-19 05:25:49,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9953634f-a97f-4721-bfde-7df4ef71c685/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-19 05:25:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:25:50,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-19 05:25:50,200 INFO L285 TraceCheckSpWp]: Computing forward predicates...