./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1271a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/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_8120923e-feb8-4362-954c-f09399e0e1b9/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1271a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/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_8120923e-feb8-4362-954c-f09399e0e1b9/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 a30f6768043f9b1bbb4a159ab9668e10bade1708373695265965e63885e716ba --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:10:03,395 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:10:03,494 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 05:10:03,500 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:10:03,501 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:10:03,533 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:10:03,534 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:10:03,534 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:10:03,535 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:10:03,536 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:10:03,537 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:10:03,538 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:10:03,538 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:10:03,539 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:10:03,540 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:10:03,541 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:10:03,541 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:10:03,542 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:10:03,543 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:10:03,543 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:10:03,544 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:10:03,545 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:10:03,546 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:10:03,547 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:10:03,548 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:10:03,548 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:10:03,549 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:10:03,549 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:10:03,550 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:10:03,551 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:10:03,551 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:10:03,552 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:10:03,552 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:10:03,553 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:10:03,553 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:10:03,554 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:10:03,554 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:10:03,555 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:10:03,556 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:10:03,556 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:10:03,557 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:10:03,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:10:03,561 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:10:03,561 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:10:03,562 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:10:03,562 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_8120923e-feb8-4362-954c-f09399e0e1b9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a30f6768043f9b1bbb4a159ab9668e10bade1708373695265965e63885e716ba [2023-11-19 05:10:03,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:10:03,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:10:03,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:10:03,955 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:10:03,956 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:10:03,959 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/float-newlib/float_req_bl_1271a.c [2023-11-19 05:10:07,889 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:10:08,245 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:10:08,246 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/sv-benchmarks/c/float-newlib/float_req_bl_1271a.c [2023-11-19 05:10:08,257 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/bin/utaipan-verify-t7M7D8N6sZ/data/11c240e6b/e92b5bf8ae7c4baeb83273f12e0df03c/FLAG0e322cb0c [2023-11-19 05:10:08,274 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/bin/utaipan-verify-t7M7D8N6sZ/data/11c240e6b/e92b5bf8ae7c4baeb83273f12e0df03c [2023-11-19 05:10:08,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:10:08,279 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:10:08,281 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:10:08,282 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:10:08,288 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:10:08,292 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:10:08" (1/1) ... [2023-11-19 05:10:08,293 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dcb328f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:08, skipping insertion in model container [2023-11-19 05:10:08,295 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:10:08" (1/1) ... [2023-11-19 05:10:08,344 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:10:08,637 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_8120923e-feb8-4362-954c-f09399e0e1b9/sv-benchmarks/c/float-newlib/float_req_bl_1271a.c[4883,4896] [2023-11-19 05:10:08,643 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:10:08,656 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:10:08,725 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_8120923e-feb8-4362-954c-f09399e0e1b9/sv-benchmarks/c/float-newlib/float_req_bl_1271a.c[4883,4896] [2023-11-19 05:10:08,726 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:10:08,770 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:10:08,771 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:08 WrapperNode [2023-11-19 05:10:08,772 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:10:08,774 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:10:08,774 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:10:08,774 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:10:08,784 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:08" (1/1) ... [2023-11-19 05:10:08,819 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:08" (1/1) ... [2023-11-19 05:10:08,866 INFO L138 Inliner]: procedures = 19, calls = 76, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 277 [2023-11-19 05:10:08,867 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:10:08,868 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:10:08,868 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:10:08,868 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:10:08,880 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:08" (1/1) ... [2023-11-19 05:10:08,880 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:08" (1/1) ... [2023-11-19 05:10:08,887 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:08" (1/1) ... [2023-11-19 05:10:08,887 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:08" (1/1) ... [2023-11-19 05:10:08,905 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:08" (1/1) ... [2023-11-19 05:10:08,914 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:08" (1/1) ... [2023-11-19 05:10:08,918 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:08" (1/1) ... [2023-11-19 05:10:08,921 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:08" (1/1) ... [2023-11-19 05:10:08,927 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:10:08,928 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:10:08,929 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:10:08,929 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:10:08,930 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:08" (1/1) ... [2023-11-19 05:10:08,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:10:08,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:10:08,971 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:10:08,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:10:09,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:10:09,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:10:09,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:10:09,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-19 05:10:09,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:10:09,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-19 05:10:09,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:10:09,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:10:09,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:10:09,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:10:09,019 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2023-11-19 05:10:09,019 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2023-11-19 05:10:09,148 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:10:09,151 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:10:09,690 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:10:09,924 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:10:09,940 INFO L302 CfgBuilder]: Removed 34 assume(true) statements. [2023-11-19 05:10:09,947 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:10:09 BoogieIcfgContainer [2023-11-19 05:10:09,947 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:10:09,950 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:10:09,950 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:10:09,954 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:10:09,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:10:08" (1/3) ... [2023-11-19 05:10:09,955 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@89d44e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:10:09, skipping insertion in model container [2023-11-19 05:10:09,955 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:08" (2/3) ... [2023-11-19 05:10:09,956 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@89d44e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:10:09, skipping insertion in model container [2023-11-19 05:10:09,956 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:10:09" (3/3) ... [2023-11-19 05:10:09,957 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1271a.c [2023-11-19 05:10:10,000 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:10:10,001 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:10:10,076 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:10:10,086 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;@73bde14f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:10:10,087 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:10:10,092 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 71 states have (on average 1.704225352112676) internal successors, (121), 72 states have internal predecessors, (121), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:10:10,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 05:10:10,101 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:10:10,101 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:10:10,102 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:10:10,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:10:10,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1813803541, now seen corresponding path program 1 times [2023-11-19 05:10:10,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:10:10,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171107849] [2023-11-19 05:10:10,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:10:10,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:10:10,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:10:10,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:10:10,324 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:10:10,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171107849] [2023-11-19 05:10:10,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171107849] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:10:10,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:10:10,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:10:10,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784024520] [2023-11-19 05:10:10,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:10:10,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 05:10:10,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:10:10,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 05:10:10,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:10:10,385 INFO L87 Difference]: Start difference. First operand has 76 states, 71 states have (on average 1.704225352112676) internal successors, (121), 72 states have internal predecessors, (121), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:10:10,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:10:10,497 INFO L93 Difference]: Finished difference Result 151 states and 251 transitions. [2023-11-19 05:10:10,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 05:10:10,500 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-19 05:10:10,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:10:10,512 INFO L225 Difference]: With dead ends: 151 [2023-11-19 05:10:10,513 INFO L226 Difference]: Without dead ends: 73 [2023-11-19 05:10:10,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 05:10:10,526 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:10:10,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:10:10,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-19 05:10:10,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2023-11-19 05:10:10,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 69 states have (on average 1.2028985507246377) internal successors, (83), 69 states have internal predecessors, (83), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:10:10,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 87 transitions. [2023-11-19 05:10:10,595 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 87 transitions. Word has length 14 [2023-11-19 05:10:10,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:10:10,596 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 87 transitions. [2023-11-19 05:10:10,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:10:10,597 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 87 transitions. [2023-11-19 05:10:10,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 05:10:10,600 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:10:10,601 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:10:10,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:10:10,601 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:10:10,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:10:10,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1522119632, now seen corresponding path program 1 times [2023-11-19 05:10:10,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:10:10,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715127947] [2023-11-19 05:10:10,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:10:10,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:10:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:10:10,796 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 05:10:10,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:10:10,903 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 05:10:10,904 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 05:10:10,906 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 05:10:10,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:10:10,911 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 05:10:10,915 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:10:10,947 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:10:10 BoogieIcfgContainer [2023-11-19 05:10:10,947 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:10:10,948 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:10:10,948 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:10:10,948 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:10:10,949 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:10:09" (3/4) ... [2023-11-19 05:10:10,951 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 05:10:10,952 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:10:10,953 INFO L158 Benchmark]: Toolchain (without parser) took 2673.70ms. Allocated memory is still 153.1MB. Free memory was 121.2MB in the beginning and 84.4MB in the end (delta: 36.7MB). Peak memory consumption was 39.0MB. Max. memory is 16.1GB. [2023-11-19 05:10:10,954 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 111.1MB. Free memory is still 66.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:10:10,954 INFO L158 Benchmark]: CACSL2BoogieTranslator took 491.18ms. Allocated memory is still 153.1MB. Free memory was 121.2MB in the beginning and 107.1MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 05:10:10,955 INFO L158 Benchmark]: Boogie Procedure Inliner took 93.61ms. Allocated memory is still 153.1MB. Free memory was 107.1MB in the beginning and 104.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:10:10,956 INFO L158 Benchmark]: Boogie Preprocessor took 59.43ms. Allocated memory is still 153.1MB. Free memory was 104.5MB in the beginning and 101.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:10:10,957 INFO L158 Benchmark]: RCFGBuilder took 1018.97ms. Allocated memory is still 153.1MB. Free memory was 101.9MB in the beginning and 122.0MB in the end (delta: -20.1MB). Peak memory consumption was 46.2MB. Max. memory is 16.1GB. [2023-11-19 05:10:10,957 INFO L158 Benchmark]: TraceAbstraction took 997.06ms. Allocated memory is still 153.1MB. Free memory was 121.3MB in the beginning and 85.6MB in the end (delta: 35.7MB). Peak memory consumption was 34.8MB. Max. memory is 16.1GB. [2023-11-19 05:10:10,958 INFO L158 Benchmark]: Witness Printer took 4.63ms. Allocated memory is still 153.1MB. Free memory was 85.6MB in the beginning and 84.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:10:10,961 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 111.1MB. Free memory is still 66.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 491.18ms. Allocated memory is still 153.1MB. Free memory was 121.2MB in the beginning and 107.1MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 93.61ms. Allocated memory is still 153.1MB. Free memory was 107.1MB in the beginning and 104.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.43ms. Allocated memory is still 153.1MB. Free memory was 104.5MB in the beginning and 101.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1018.97ms. Allocated memory is still 153.1MB. Free memory was 101.9MB in the beginning and 122.0MB in the end (delta: -20.1MB). Peak memory consumption was 46.2MB. Max. memory is 16.1GB. * TraceAbstraction took 997.06ms. Allocated memory is still 153.1MB. Free memory was 121.3MB in the beginning and 85.6MB in the end (delta: 35.7MB). Peak memory consumption was 34.8MB. Max. memory is 16.1GB. * Witness Printer took 4.63ms. Allocated memory is still 153.1MB. Free memory was 85.6MB in the beginning and 84.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 241]: 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 213, overapproximation of someBinaryArithmeticFLOAToperation at line 120. Possible FailurePath: [L14] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L234] float x = 0.0f / 0.0f; [L235] float y = __VERIFIER_nondet_float(); [L237] CALL isfinite_float(y) [L217] __int32_t ix; VAL [\old(x)=251658245, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=251658245] [L219] ieee_float_shape_type gf_u; [L220] EXPR gf_u.value = (x) [L221] EXPR gf_u.word [L221] EXPR (ix) = gf_u.word [L218-L222] { ieee_float_shape_type gf_u; gf_u.value = (x); (ix) = gf_u.word; } VAL [\old(x)=251658245, ix=-8388609, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=251658245] [L223] ix &= 0x7fffffff [L224] return (((ix) < 0x7f800000L)); [L237] RET isfinite_float(y) [L237] COND TRUE isfinite_float(y) [L238] CALL, EXPR __ieee754_hypotf(x, y) [L84] float a = x, b = y, t1, t2, y1, y2, w; [L85] __int32_t j, k, ha, hb; VAL [\old(x)=251658245, \old(y)=251658245, a=251658245, b=251658245, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=251658245, y=251658245] [L88] ieee_float_shape_type gf_u; [L89] EXPR gf_u.value = (x) [L90] EXPR gf_u.word [L90] EXPR (ha) = gf_u.word [L87-L91] { ieee_float_shape_type gf_u; gf_u.value = (x); (ha) = gf_u.word; } VAL [\old(x)=251658245, \old(y)=251658245, a=251658245, b=251658245, ha=-1895825407, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=251658245, y=251658245] [L92] ha &= 0x7fffffffL VAL [\old(x)=251658245, \old(y)=251658245, a=251658245, b=251658245, ha=251658241, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=251658245, y=251658245] [L94] ieee_float_shape_type gf_u; [L95] EXPR gf_u.value = (y) [L96] EXPR gf_u.word [L96] EXPR (hb) = gf_u.word [L93-L97] { ieee_float_shape_type gf_u; gf_u.value = (y); (hb) = gf_u.word; } VAL [\old(x)=251658245, \old(y)=251658245, a=251658245, b=251658245, ha=251658241, hb=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=251658245, y=251658245] [L98] hb &= 0x7fffffffL [L99] COND FALSE !(hb > ha) [L106] a = x [L107] b = y VAL [\old(x)=251658245, \old(y)=251658245, a=251658245, b=251658245, ha=251658241, hb=0, j=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=251658245, y=251658245] [L110] ieee_float_shape_type sf_u; [L111] EXPR sf_u.word = (ha) [L112] EXPR sf_u.value [L112] EXPR (a) = sf_u.value [L109-L113] { ieee_float_shape_type sf_u; sf_u.word = (ha); (a) = sf_u.value; } VAL [\old(x)=251658245, \old(y)=251658245, a=251658244, b=251658245, ha=251658241, hb=0, j=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=251658245, y=251658245] [L115] ieee_float_shape_type sf_u; [L116] EXPR sf_u.word = (hb) [L117] EXPR sf_u.value [L117] EXPR (b) = sf_u.value [L114-L118] { ieee_float_shape_type sf_u; sf_u.word = (hb); (b) = sf_u.value; } VAL [\old(x)=251658245, \old(y)=251658245, a=251658244, b=251658243, ha=251658241, hb=0, j=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=251658245, y=251658245] [L119] COND TRUE (ha - hb) > 0xf000000L [L120] return a + b; VAL [\old(x)=251658245, \old(y)=251658245, a=251658244, b=251658243, ha=251658241, hb=0, j=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=251658245, y=251658245] [L238] RET, EXPR __ieee754_hypotf(x, y) [L238] float res = __ieee754_hypotf(x, y); [L240] CALL, EXPR isnan_float(res) [L213] return x != x; [L240] RET, EXPR isnan_float(res) [L240] COND TRUE !isnan_float(res) [L241] reach_error() VAL [one_sqrt=1, res=251658242, tiny_sqrt=1/1000000000000000000000000000000, x=251658245, y=251658245] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 80 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11 IncrementalHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 80 mSDtfsCounter, 11 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 13 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 05:10:11,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/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_8120923e-feb8-4362-954c-f09399e0e1b9/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1271a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/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_8120923e-feb8-4362-954c-f09399e0e1b9/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 a30f6768043f9b1bbb4a159ab9668e10bade1708373695265965e63885e716ba --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:10:14,286 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:10:14,396 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-19 05:10:14,409 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:10:14,409 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:10:14,458 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:10:14,459 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:10:14,459 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:10:14,460 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:10:14,465 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:10:14,465 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:10:14,466 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:10:14,466 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:10:14,468 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:10:14,468 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:10:14,469 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:10:14,470 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:10:14,470 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:10:14,471 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:10:14,472 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:10:14,472 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:10:14,473 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:10:14,473 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:10:14,473 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:10:14,474 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:10:14,474 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 05:10:14,474 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 05:10:14,475 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:10:14,475 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:10:14,475 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:10:14,477 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:10:14,477 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 05:10:14,477 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:10:14,478 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:10:14,478 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:10:14,478 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:10:14,478 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:10:14,479 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 05:10:14,479 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 05:10:14,480 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:10:14,480 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:10:14,480 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:10:14,480 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_8120923e-feb8-4362-954c-f09399e0e1b9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a30f6768043f9b1bbb4a159ab9668e10bade1708373695265965e63885e716ba [2023-11-19 05:10:14,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:10:14,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:10:14,916 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:10:14,917 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:10:14,918 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:10:14,919 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/float-newlib/float_req_bl_1271a.c [2023-11-19 05:10:18,534 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:10:18,884 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:10:18,886 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/sv-benchmarks/c/float-newlib/float_req_bl_1271a.c [2023-11-19 05:10:18,897 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/bin/utaipan-verify-t7M7D8N6sZ/data/093ff7445/aa50e4e04a6f46cc93659097fbb274c6/FLAG610ef24f8 [2023-11-19 05:10:18,914 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/bin/utaipan-verify-t7M7D8N6sZ/data/093ff7445/aa50e4e04a6f46cc93659097fbb274c6 [2023-11-19 05:10:18,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:10:18,918 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:10:18,920 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:10:18,920 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:10:18,927 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:10:18,928 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:10:18" (1/1) ... [2023-11-19 05:10:18,929 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18bf3100 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:18, skipping insertion in model container [2023-11-19 05:10:18,930 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:10:18" (1/1) ... [2023-11-19 05:10:18,966 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:10:19,301 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_8120923e-feb8-4362-954c-f09399e0e1b9/sv-benchmarks/c/float-newlib/float_req_bl_1271a.c[4883,4896] [2023-11-19 05:10:19,307 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:10:19,331 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:10:19,456 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_8120923e-feb8-4362-954c-f09399e0e1b9/sv-benchmarks/c/float-newlib/float_req_bl_1271a.c[4883,4896] [2023-11-19 05:10:19,457 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:10:19,485 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:10:19,486 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:19 WrapperNode [2023-11-19 05:10:19,486 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:10:19,488 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:10:19,489 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:10:19,490 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:10:19,499 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:19" (1/1) ... [2023-11-19 05:10:19,557 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:19" (1/1) ... [2023-11-19 05:10:19,612 INFO L138 Inliner]: procedures = 22, calls = 76, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 276 [2023-11-19 05:10:19,617 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:10:19,618 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:10:19,619 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:10:19,619 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:10:19,630 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:19" (1/1) ... [2023-11-19 05:10:19,631 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:19" (1/1) ... [2023-11-19 05:10:19,660 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:19" (1/1) ... [2023-11-19 05:10:19,661 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:19" (1/1) ... [2023-11-19 05:10:19,680 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:19" (1/1) ... [2023-11-19 05:10:19,688 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:19" (1/1) ... [2023-11-19 05:10:19,692 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:19" (1/1) ... [2023-11-19 05:10:19,696 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:19" (1/1) ... [2023-11-19 05:10:19,702 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:10:19,703 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:10:19,703 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:10:19,704 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:10:19,705 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:19" (1/1) ... [2023-11-19 05:10:19,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:10:19,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:10:19,748 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:10:19,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:10:19,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:10:19,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 05:10:19,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:10:19,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2023-11-19 05:10:19,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 05:10:19,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:10:19,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:10:19,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2023-11-19 05:10:19,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 05:10:19,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:10:19,815 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2023-11-19 05:10:19,815 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2023-11-19 05:10:19,949 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:10:19,952 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:10:23,020 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:10:23,030 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:10:23,031 INFO L302 CfgBuilder]: Removed 34 assume(true) statements. [2023-11-19 05:10:23,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:10:23 BoogieIcfgContainer [2023-11-19 05:10:23,036 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:10:23,057 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:10:23,058 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:10:23,062 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:10:23,062 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:10:18" (1/3) ... [2023-11-19 05:10:23,063 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267ca316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:10:23, skipping insertion in model container [2023-11-19 05:10:23,063 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:19" (2/3) ... [2023-11-19 05:10:23,064 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267ca316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:10:23, skipping insertion in model container [2023-11-19 05:10:23,064 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:10:23" (3/3) ... [2023-11-19 05:10:23,066 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1271a.c [2023-11-19 05:10:23,090 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:10:23,090 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:10:23,159 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:10:23,170 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;@2634b8f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:10:23,171 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:10:23,177 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 87 states have (on average 1.6781609195402298) internal successors, (146), 88 states have internal predecessors, (146), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:10:23,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-19 05:10:23,186 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:10:23,187 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:10:23,188 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:10:23,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:10:23,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1119796192, now seen corresponding path program 1 times [2023-11-19 05:10:23,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:10:23,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [362137370] [2023-11-19 05:10:23,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:10:23,216 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 05:10:23,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:10:23,220 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/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 05:10:23,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/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 05:10:23,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:10:23,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 05:10:23,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:10:23,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:10:23,509 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:10:23,510 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:10:23,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [362137370] [2023-11-19 05:10:23,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [362137370] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:10:23,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:10:23,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:10:23,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692776799] [2023-11-19 05:10:23,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:10:23,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 05:10:23,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:10:23,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 05:10:23,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:10:23,576 INFO L87 Difference]: Start difference. First operand has 92 states, 87 states have (on average 1.6781609195402298) internal successors, (146), 88 states have internal predecessors, (146), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:10:23,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:10:23,645 INFO L93 Difference]: Finished difference Result 182 states and 300 transitions. [2023-11-19 05:10:23,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 05:10:23,648 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-19 05:10:23,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:10:23,658 INFO L225 Difference]: With dead ends: 182 [2023-11-19 05:10:23,658 INFO L226 Difference]: Without dead ends: 88 [2023-11-19 05:10:23,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 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 05:10:23,668 INFO L413 NwaCegarLoop]: 115 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, 115 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 05:10:23,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:10:23,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-11-19 05:10:23,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2023-11-19 05:10:23,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 84 states have (on average 1.2619047619047619) internal successors, (106), 84 states have internal predecessors, (106), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:10:23,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 110 transitions. [2023-11-19 05:10:23,723 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 110 transitions. Word has length 18 [2023-11-19 05:10:23,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:10:23,724 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 110 transitions. [2023-11-19 05:10:23,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:10:23,725 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 110 transitions. [2023-11-19 05:10:23,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 05:10:23,726 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:10:23,726 INFO L195 NwaCegarLoop]: trace histogram [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 05:10:23,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/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 05:10:23,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/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 05:10:23,933 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:10:23,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:10:23,934 INFO L85 PathProgramCache]: Analyzing trace with hash 46998031, now seen corresponding path program 1 times [2023-11-19 05:10:23,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:10:23,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1680665902] [2023-11-19 05:10:23,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:10:23,942 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 05:10:23,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:10:23,949 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/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 05:10:23,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/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 05:10:24,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:10:24,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 05:10:24,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:10:25,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:10:25,390 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:10:25,390 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:10:25,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1680665902] [2023-11-19 05:10:25,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1680665902] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:10:25,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:10:25,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 05:10:25,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897291581] [2023-11-19 05:10:25,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:10:25,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 05:10:25,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:10:25,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 05:10:25,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-19 05:10:25,396 INFO L87 Difference]: Start difference. First operand 88 states and 110 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:10:27,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:10:27,208 INFO L93 Difference]: Finished difference Result 106 states and 133 transitions. [2023-11-19 05:10:27,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 05:10:27,211 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-11-19 05:10:27,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:10:27,213 INFO L225 Difference]: With dead ends: 106 [2023-11-19 05:10:27,213 INFO L226 Difference]: Without dead ends: 40 [2023-11-19 05:10:27,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2023-11-19 05:10:27,216 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 117 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:10:27,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 62 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-19 05:10:27,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-19 05:10:27,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2023-11-19 05:10:27,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 37 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:10:27,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2023-11-19 05:10:27,244 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 23 [2023-11-19 05:10:27,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:10:27,245 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2023-11-19 05:10:27,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:10:27,246 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2023-11-19 05:10:27,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 05:10:27,247 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:10:27,247 INFO L195 NwaCegarLoop]: trace histogram [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 05:10:27,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/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 05:10:27,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/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 05:10:27,455 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:10:27,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:10:27,457 INFO L85 PathProgramCache]: Analyzing trace with hash -346028979, now seen corresponding path program 1 times [2023-11-19 05:10:27,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:10:27,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [452520103] [2023-11-19 05:10:27,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:10:27,458 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 05:10:27,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:10:27,460 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/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 05:10:27,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/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 (4)] Waiting until timeout for monitored process [2023-11-19 05:10:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:10:27,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-19 05:10:27,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:10:29,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:10:29,436 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:10:29,436 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:10:29,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [452520103] [2023-11-19 05:10:29,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [452520103] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:10:29,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:10:29,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-19 05:10:29,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019772856] [2023-11-19 05:10:29,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:10:29,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 05:10:29,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:10:29,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 05:10:29,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-19 05:10:29,440 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:10:33,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:10:33,209 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2023-11-19 05:10:33,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 05:10:33,211 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-11-19 05:10:33,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:10:33,212 INFO L225 Difference]: With dead ends: 43 [2023-11-19 05:10:33,212 INFO L226 Difference]: Without dead ends: 38 [2023-11-19 05:10:33,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2023-11-19 05:10:33,214 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 91 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:10:33,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 92 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-19 05:10:33,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-19 05:10:33,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-11-19 05:10:33,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.054054054054054) internal successors, (39), 37 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:10:33,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2023-11-19 05:10:33,225 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 23 [2023-11-19 05:10:33,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:10:33,225 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2023-11-19 05:10:33,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:10:33,226 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2023-11-19 05:10:33,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 05:10:33,227 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:10:33,227 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 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 05:10:33,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/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 (4)] Ended with exit code 0 [2023-11-19 05:10:33,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/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 05:10:33,434 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:10:33,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:10:33,435 INFO L85 PathProgramCache]: Analyzing trace with hash -312089554, now seen corresponding path program 1 times [2023-11-19 05:10:33,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:10:33,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [139498979] [2023-11-19 05:10:33,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:10:33,436 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 05:10:33,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:10:33,444 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/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 05:10:33,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/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 05:10:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:10:33,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-19 05:10:33,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:10:36,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:10:36,907 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:10:36,908 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:10:36,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [139498979] [2023-11-19 05:10:36,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [139498979] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:10:36,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:10:36,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-19 05:10:36,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409489339] [2023-11-19 05:10:36,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:10:36,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 05:10:36,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:10:36,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 05:10:36,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-19 05:10:36,913 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:10:51,518 WARN L293 SmtUtils]: Spent 5.69s on a formula simplification. DAG size of input: 45 DAG size of output: 43 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-19 05:10:54,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:10:54,866 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2023-11-19 05:10:54,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 05:10:54,867 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-11-19 05:10:54,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:10:54,868 INFO L225 Difference]: With dead ends: 44 [2023-11-19 05:10:54,868 INFO L226 Difference]: Without dead ends: 29 [2023-11-19 05:10:54,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2023-11-19 05:10:54,871 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 48 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:10:54,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 113 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-11-19 05:10:54,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-11-19 05:10:54,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-11-19 05:10:54,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.0) internal successors, (28), 28 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:10:54,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 28 transitions. [2023-11-19 05:10:54,880 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 28 transitions. Word has length 28 [2023-11-19 05:10:54,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:10:54,880 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 28 transitions. [2023-11-19 05:10:54,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:10:54,881 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 28 transitions. [2023-11-19 05:10:54,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 05:10:54,882 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:10:54,882 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 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 05:10:54,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/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 05:10:55,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/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 05:10:55,093 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:10:55,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:10:55,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1649211534, now seen corresponding path program 1 times [2023-11-19 05:10:55,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:10:55,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2020693609] [2023-11-19 05:10:55,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:10:55,095 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 05:10:55,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:10:55,097 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/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 05:10:55,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/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 (6)] Waiting until timeout for monitored process [2023-11-19 05:10:55,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:10:55,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-19 05:10:55,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:10:55,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 05:10:55,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-19 05:10:55,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 05:10:55,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2023-11-19 05:10:56,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:10:56,473 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:10:56,474 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:10:56,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2020693609] [2023-11-19 05:10:56,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2020693609] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:10:56,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:10:56,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 05:10:56,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802303032] [2023-11-19 05:10:56,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:10:56,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 05:10:56,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:10:56,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 05:10:56,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-19 05:10:56,480 INFO L87 Difference]: Start difference. First operand 29 states and 28 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:10:57,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:10:57,804 INFO L93 Difference]: Finished difference Result 29 states and 28 transitions. [2023-11-19 05:10:57,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 05:10:57,806 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-11-19 05:10:57,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:10:57,806 INFO L225 Difference]: With dead ends: 29 [2023-11-19 05:10:57,806 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 05:10:57,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2023-11-19 05:10:57,808 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 32 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:10:57,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 65 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 05:10:57,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 05:10:57,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 05:10:57,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:10:57,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 05:10:57,811 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2023-11-19 05:10:57,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:10:57,811 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 05:10:57,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:10:57,811 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 05:10:57,812 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 05:10:57,815 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 05:10:57,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/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 (6)] Ended with exit code 0 [2023-11-19 05:10:58,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120923e-feb8-4362-954c-f09399e0e1b9/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 05:10:58,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.