./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0620b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 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_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0620b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5 --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 075a76806290abf75c2d2bbc3aed8400bd808fbae1a9b71a2d432aac31dd29da --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 18:56:57,205 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 18:56:57,298 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-21 18:56:57,304 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 18:56:57,305 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 18:56:57,330 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 18:56:57,331 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 18:56:57,332 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 18:56:57,332 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 18:56:57,333 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 18:56:57,334 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 18:56:57,334 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 18:56:57,335 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 18:56:57,335 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 18:56:57,336 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 18:56:57,336 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 18:56:57,337 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 18:56:57,337 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 18:56:57,338 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 18:56:57,339 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 18:56:57,339 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 18:56:57,340 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 18:56:57,341 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 18:56:57,341 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 18:56:57,342 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 18:56:57,342 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 18:56:57,343 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 18:56:57,343 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 18:56:57,344 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 18:56:57,344 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 18:56:57,345 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 18:56:57,345 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 18:56:57,345 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 18:56:57,346 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 18:56:57,346 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 18:56:57,347 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 18:56:57,347 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 18:56:57,348 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 18:56:57,348 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 18:56:57,349 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 18:56:57,349 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 18:56:57,350 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 18:56:57,350 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 18:56:57,351 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 18:56:57,351 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 18:56:57,351 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 18:56:57,352 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 18:56:57,352 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_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 075a76806290abf75c2d2bbc3aed8400bd808fbae1a9b71a2d432aac31dd29da [2023-11-21 18:56:57,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 18:56:57,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 18:56:57,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 18:56:57,688 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 18:56:57,688 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 18:56:57,689 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/float-newlib/float_req_bl_0620b.c [2023-11-21 18:57:00,899 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 18:57:01,210 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 18:57:01,211 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/sv-benchmarks/c/float-newlib/float_req_bl_0620b.c [2023-11-21 18:57:01,223 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/data/3b4035d19/9bb16fd992684ba288a5bcfa4f3d2bc9/FLAG04e9a14f8 [2023-11-21 18:57:01,244 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/data/3b4035d19/9bb16fd992684ba288a5bcfa4f3d2bc9 [2023-11-21 18:57:01,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 18:57:01,254 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 18:57:01,257 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 18:57:01,257 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 18:57:01,263 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 18:57:01,264 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:57:01" (1/1) ... [2023-11-21 18:57:01,266 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9d9e933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:01, skipping insertion in model container [2023-11-21 18:57:01,266 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:57:01" (1/1) ... [2023-11-21 18:57:01,310 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 18:57:01,532 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_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/sv-benchmarks/c/float-newlib/float_req_bl_0620b.c[3330,3343] [2023-11-21 18:57:01,537 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:57:01,551 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 18:57:01,592 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_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/sv-benchmarks/c/float-newlib/float_req_bl_0620b.c[3330,3343] [2023-11-21 18:57:01,593 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:57:01,616 INFO L206 MainTranslator]: Completed translation [2023-11-21 18:57:01,617 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:01 WrapperNode [2023-11-21 18:57:01,617 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 18:57:01,619 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 18:57:01,619 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 18:57:01,619 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 18:57:01,627 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:01" (1/1) ... [2023-11-21 18:57:01,640 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:01" (1/1) ... [2023-11-21 18:57:01,676 INFO L138 Inliner]: procedures = 19, calls = 65, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 197 [2023-11-21 18:57:01,676 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 18:57:01,677 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 18:57:01,677 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 18:57:01,678 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 18:57:01,692 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:01" (1/1) ... [2023-11-21 18:57:01,693 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:01" (1/1) ... [2023-11-21 18:57:01,697 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:01" (1/1) ... [2023-11-21 18:57:01,698 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:01" (1/1) ... [2023-11-21 18:57:01,711 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:01" (1/1) ... [2023-11-21 18:57:01,716 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:01" (1/1) ... [2023-11-21 18:57:01,719 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:01" (1/1) ... [2023-11-21 18:57:01,721 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:01" (1/1) ... [2023-11-21 18:57:01,725 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 18:57:01,726 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 18:57:01,727 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 18:57:01,727 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 18:57:01,728 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:01" (1/1) ... [2023-11-21 18:57:01,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 18:57:01,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 18:57:01,800 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 18:57:01,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 18:57:01,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 18:57:01,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 18:57:01,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 18:57:01,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-21 18:57:01,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 18:57:01,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-21 18:57:01,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 18:57:01,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 18:57:01,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 18:57:01,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2023-11-21 18:57:01,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 18:57:01,952 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 18:57:01,955 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 18:57:02,316 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 18:57:02,399 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 18:57:02,400 INFO L308 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-21 18:57:02,402 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:57:02 BoogieIcfgContainer [2023-11-21 18:57:02,402 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 18:57:02,405 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 18:57:02,405 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 18:57:02,409 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 18:57:02,409 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 06:57:01" (1/3) ... [2023-11-21 18:57:02,410 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ad4a9ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 06:57:02, skipping insertion in model container [2023-11-21 18:57:02,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:01" (2/3) ... [2023-11-21 18:57:02,411 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ad4a9ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 06:57:02, skipping insertion in model container [2023-11-21 18:57:02,411 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:57:02" (3/3) ... [2023-11-21 18:57:02,412 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0620b.c [2023-11-21 18:57:02,436 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 18:57:02,436 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 18:57:02,515 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 18:57:02,522 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;@42e01db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 18:57:02,523 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 18:57:02,527 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 24 states have internal predecessors, (38), 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) [2023-11-21 18:57:02,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 18:57:02,534 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:57:02,535 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 18:57:02,535 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 18:57:02,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:57:02,542 INFO L85 PathProgramCache]: Analyzing trace with hash -170726335, now seen corresponding path program 1 times [2023-11-21 18:57:02,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 18:57:02,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119587515] [2023-11-21 18:57:02,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:57:02,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:57:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:57:02,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:57:02,766 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 18:57:02,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119587515] [2023-11-21 18:57:02,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119587515] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 18:57:02,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 18:57:02,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 18:57:02,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800043100] [2023-11-21 18:57:02,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 18:57:02,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-21 18:57:02,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 18:57:02,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-21 18:57:02,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 18:57:02,836 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 24 states have internal predecessors, (38), 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) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2023-11-21 18:57:02,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 18:57:02,907 INFO L93 Difference]: Finished difference Result 49 states and 75 transitions. [2023-11-21 18:57:02,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 18:57:02,911 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2023-11-21 18:57:02,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 18:57:02,921 INFO L225 Difference]: With dead ends: 49 [2023-11-21 18:57:02,922 INFO L226 Difference]: Without dead ends: 23 [2023-11-21 18:57:02,927 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 [2023-11-21 18:57:02,938 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 18:57:02,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 18:57:02,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-21 18:57:02,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-11-21 18:57:02,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 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) [2023-11-21 18:57:02,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-11-21 18:57:02,981 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 8 [2023-11-21 18:57:02,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 18:57:02,983 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-11-21 18:57:02,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2023-11-21 18:57:02,983 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-11-21 18:57:02,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 18:57:02,985 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:57:02,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 18:57:02,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 18:57:02,986 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 18:57:02,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:57:02,987 INFO L85 PathProgramCache]: Analyzing trace with hash 161112926, now seen corresponding path program 1 times [2023-11-21 18:57:02,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 18:57:02,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898202342] [2023-11-21 18:57:02,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:57:02,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:57:03,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:57:03,111 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:57:03,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:57:03,239 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-21 18:57:03,245 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 18:57:03,247 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-21 18:57:03,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 18:57:03,254 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-21 18:57:03,258 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 18:57:03,290 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem9 could not be translated [2023-11-21 18:57:03,291 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem10 could not be translated [2023-11-21 18:57:03,291 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem8 could not be translated [2023-11-21 18:57:03,292 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem7 could not be translated [2023-11-21 18:57:03,294 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short28 could not be translated [2023-11-21 18:57:03,315 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 06:57:03 BoogieIcfgContainer [2023-11-21 18:57:03,315 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 18:57:03,317 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 18:57:03,317 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 18:57:03,317 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 18:57:03,317 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:57:02" (3/4) ... [2023-11-21 18:57:03,319 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 18:57:03,320 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 18:57:03,321 INFO L158 Benchmark]: Toolchain (without parser) took 2067.89ms. Allocated memory is still 157.3MB. Free memory was 112.6MB in the beginning and 84.8MB in the end (delta: 27.8MB). Peak memory consumption was 26.6MB. Max. memory is 16.1GB. [2023-11-21 18:57:03,322 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 117.4MB. Free memory is still 64.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:57:03,322 INFO L158 Benchmark]: CACSL2BoogieTranslator took 360.86ms. Allocated memory is still 157.3MB. Free memory was 112.6MB in the beginning and 99.7MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-21 18:57:03,323 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.84ms. Allocated memory is still 157.3MB. Free memory was 99.7MB in the beginning and 97.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:57:03,323 INFO L158 Benchmark]: Boogie Preprocessor took 48.54ms. Allocated memory is still 157.3MB. Free memory was 97.6MB in the beginning and 95.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:57:03,324 INFO L158 Benchmark]: RCFGBuilder took 675.48ms. Allocated memory is still 157.3MB. Free memory was 95.5MB in the beginning and 117.1MB in the end (delta: -21.6MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. [2023-11-21 18:57:03,325 INFO L158 Benchmark]: TraceAbstraction took 910.89ms. Allocated memory is still 157.3MB. Free memory was 116.3MB in the beginning and 84.8MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2023-11-21 18:57:03,325 INFO L158 Benchmark]: Witness Printer took 4.08ms. Allocated memory is still 157.3MB. Free memory is still 84.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:57:03,333 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 117.4MB. Free memory is still 64.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 360.86ms. Allocated memory is still 157.3MB. Free memory was 112.6MB in the beginning and 99.7MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.84ms. Allocated memory is still 157.3MB. Free memory was 99.7MB in the beginning and 97.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.54ms. Allocated memory is still 157.3MB. Free memory was 97.6MB in the beginning and 95.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 675.48ms. Allocated memory is still 157.3MB. Free memory was 95.5MB in the beginning and 117.1MB in the end (delta: -21.6MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. * TraceAbstraction took 910.89ms. Allocated memory is still 157.3MB. Free memory was 116.3MB in the beginning and 84.8MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Witness Printer took 4.08ms. Allocated memory is still 157.3MB. Free memory is still 84.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short28 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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: 144]: 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 143, overapproximation of someUnaryDOUBLEoperation at line 46, overapproximation of someUnaryFLOAToperation at line 139, overapproximation of someBinaryArithmeticFLOAToperation at line 67. Possible FailurePath: [L14] static const float huge_floor = 1.0e30; [L31-L36] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L38-L43] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L45-L49] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L51-L53] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; [L139] float x = -0.0f; [L140] CALL, EXPR atan_float(x) [L56] float w, s1, s2, z; [L57] __int32_t ix, hx, id; VAL [\old(x)=1000000000000000000000000000004, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=1000000000000000000000000000004] [L60] ieee_float_shape_type gf_u; [L61] EXPR gf_u.value = (x) [L62] EXPR gf_u.word [L62] EXPR (hx) = gf_u.word [L59-L63] { ieee_float_shape_type gf_u; gf_u.value = (x); (hx) = gf_u.word; } VAL [\old(x)=1000000000000000000000000000004, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=2147483647, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=1000000000000000000000000000004] [L64] ix = hx & 0x7fffffff VAL [\old(x)=1000000000000000000000000000004, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=2147483647, ix=2147483647, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=1000000000000000000000000000004] [L65] COND TRUE ix >= 0x50800000 [L66] COND TRUE ((ix) > 0x7f800000L) [L67] return x + x; VAL [\old(x)=1000000000000000000000000000004, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=2147483647, ix=2147483647, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=1000000000000000000000000000004] [L140] RET, EXPR atan_float(x) [L140] float res = atan_float(x); [L143] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, res=1000000000000000000000000000003, x=1000000000000000000000000000004] [L143] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L144] reach_error() VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, res=1000000000000000000000000000003, x=1000000000000000000000000000004] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, 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, 23 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 23 mSDtfsCounter, 6 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=25occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 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 [2023-11-21 18:57:03,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0620b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5 --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 075a76806290abf75c2d2bbc3aed8400bd808fbae1a9b71a2d432aac31dd29da --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 18:57:06,352 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 18:57:06,505 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-21 18:57:06,515 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 18:57:06,516 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 18:57:06,565 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 18:57:06,565 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 18:57:06,566 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 18:57:06,567 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 18:57:06,572 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 18:57:06,572 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 18:57:06,573 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 18:57:06,573 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 18:57:06,575 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 18:57:06,576 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 18:57:06,576 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 18:57:06,577 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 18:57:06,578 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 18:57:06,578 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 18:57:06,580 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 18:57:06,580 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 18:57:06,581 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 18:57:06,581 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 18:57:06,582 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 18:57:06,582 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 18:57:06,582 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 18:57:06,583 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 18:57:06,583 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 18:57:06,584 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 18:57:06,584 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 18:57:06,586 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 18:57:06,586 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 18:57:06,586 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 18:57:06,587 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 18:57:06,587 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 18:57:06,588 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 18:57:06,588 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 18:57:06,588 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 18:57:06,589 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-21 18:57:06,590 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 18:57:06,590 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 18:57:06,591 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 18:57:06,591 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 18:57:06,591 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 18:57:06,592 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_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 075a76806290abf75c2d2bbc3aed8400bd808fbae1a9b71a2d432aac31dd29da [2023-11-21 18:57:07,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 18:57:07,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 18:57:07,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 18:57:07,082 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 18:57:07,083 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 18:57:07,084 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/float-newlib/float_req_bl_0620b.c [2023-11-21 18:57:10,439 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 18:57:10,701 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 18:57:10,702 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/sv-benchmarks/c/float-newlib/float_req_bl_0620b.c [2023-11-21 18:57:10,710 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/data/c9bf702f4/2270516cfb6248eabeece67367bd0325/FLAG76c45a7ed [2023-11-21 18:57:10,725 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/data/c9bf702f4/2270516cfb6248eabeece67367bd0325 [2023-11-21 18:57:10,728 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 18:57:10,730 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 18:57:10,731 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 18:57:10,732 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 18:57:10,738 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 18:57:10,739 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:57:10" (1/1) ... [2023-11-21 18:57:10,740 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54108f94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:10, skipping insertion in model container [2023-11-21 18:57:10,740 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:57:10" (1/1) ... [2023-11-21 18:57:10,784 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 18:57:10,981 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_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/sv-benchmarks/c/float-newlib/float_req_bl_0620b.c[3330,3343] [2023-11-21 18:57:10,990 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:57:11,017 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 18:57:11,069 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_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/sv-benchmarks/c/float-newlib/float_req_bl_0620b.c[3330,3343] [2023-11-21 18:57:11,070 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:57:11,094 INFO L206 MainTranslator]: Completed translation [2023-11-21 18:57:11,095 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:11 WrapperNode [2023-11-21 18:57:11,095 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 18:57:11,096 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 18:57:11,111 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 18:57:11,111 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 18:57:11,123 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:11" (1/1) ... [2023-11-21 18:57:11,160 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:11" (1/1) ... [2023-11-21 18:57:11,207 INFO L138 Inliner]: procedures = 22, calls = 65, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 197 [2023-11-21 18:57:11,218 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 18:57:11,219 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 18:57:11,219 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 18:57:11,219 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 18:57:11,229 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:11" (1/1) ... [2023-11-21 18:57:11,229 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:11" (1/1) ... [2023-11-21 18:57:11,240 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:11" (1/1) ... [2023-11-21 18:57:11,241 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:11" (1/1) ... [2023-11-21 18:57:11,256 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:11" (1/1) ... [2023-11-21 18:57:11,261 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:11" (1/1) ... [2023-11-21 18:57:11,264 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:11" (1/1) ... [2023-11-21 18:57:11,267 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:11" (1/1) ... [2023-11-21 18:57:11,275 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 18:57:11,276 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 18:57:11,276 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 18:57:11,276 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 18:57:11,277 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:11" (1/1) ... [2023-11-21 18:57:11,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 18:57:11,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 18:57:11,314 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 18:57:11,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 18:57:11,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 18:57:11,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2023-11-21 18:57:11,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-21 18:57:11,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 18:57:11,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2023-11-21 18:57:11,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-21 18:57:11,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 18:57:11,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 18:57:11,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2023-11-21 18:57:11,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-21 18:57:11,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 18:57:11,493 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 18:57:11,496 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 18:57:22,948 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 18:57:23,113 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 18:57:23,113 INFO L308 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-21 18:57:23,115 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:57:23 BoogieIcfgContainer [2023-11-21 18:57:23,115 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 18:57:23,118 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 18:57:23,118 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 18:57:23,122 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 18:57:23,122 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 06:57:10" (1/3) ... [2023-11-21 18:57:23,123 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b2eeef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 06:57:23, skipping insertion in model container [2023-11-21 18:57:23,123 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:11" (2/3) ... [2023-11-21 18:57:23,124 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b2eeef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 06:57:23, skipping insertion in model container [2023-11-21 18:57:23,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:57:23" (3/3) ... [2023-11-21 18:57:23,126 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0620b.c [2023-11-21 18:57:23,148 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 18:57:23,149 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 18:57:23,218 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 18:57:23,225 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;@35d8261d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 18:57:23,226 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 18:57:23,231 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 24 states have internal predecessors, (38), 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) [2023-11-21 18:57:23,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 18:57:23,249 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:57:23,250 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 18:57:23,250 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 18:57:23,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:57:23,255 INFO L85 PathProgramCache]: Analyzing trace with hash -170726335, now seen corresponding path program 1 times [2023-11-21 18:57:23,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 18:57:23,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [590164529] [2023-11-21 18:57:23,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:57:23,279 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 [2023-11-21 18:57:23,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 18:57:23,283 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/mathsat -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) [2023-11-21 18:57:23,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/mathsat -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 [2023-11-21 18:57:24,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:57:24,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-21 18:57:24,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:57:24,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:57:24,317 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 18:57:24,318 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 18:57:24,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [590164529] [2023-11-21 18:57:24,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [590164529] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 18:57:24,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 18:57:24,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 18:57:24,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483424412] [2023-11-21 18:57:24,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 18:57:24,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-21 18:57:24,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 18:57:24,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-21 18:57:24,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 18:57:24,360 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 24 states have internal predecessors, (38), 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) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2023-11-21 18:57:27,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.49s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 18:57:29,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-21 18:57:29,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 18:57:29,758 INFO L93 Difference]: Finished difference Result 49 states and 75 transitions. [2023-11-21 18:57:29,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 18:57:29,807 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2023-11-21 18:57:29,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 18:57:29,816 INFO L225 Difference]: With dead ends: 49 [2023-11-21 18:57:29,816 INFO L226 Difference]: Without dead ends: 23 [2023-11-21 18:57:29,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 18:57:29,823 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-11-21 18:57:29,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 2 Unknown, 0 Unchecked, 5.4s Time] [2023-11-21 18:57:29,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-21 18:57:29,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-11-21 18:57:29,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 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) [2023-11-21 18:57:29,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-11-21 18:57:29,865 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 8 [2023-11-21 18:57:29,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 18:57:29,867 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-11-21 18:57:29,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2023-11-21 18:57:29,867 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-11-21 18:57:29,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 18:57:29,869 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:57:29,870 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 18:57:29,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-21 18:57:30,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 18:57:30,071 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 18:57:30,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:57:30,072 INFO L85 PathProgramCache]: Analyzing trace with hash 161112926, now seen corresponding path program 1 times [2023-11-21 18:57:30,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 18:57:30,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [841430213] [2023-11-21 18:57:30,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:57:30,073 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 [2023-11-21 18:57:30,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 18:57:30,074 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/mathsat -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) [2023-11-21 18:57:30,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/mathsat -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 [2023-11-21 18:57:31,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:57:31,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 18:57:31,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:57:31,375 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 [2023-11-21 18:57:31,400 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 30 treesize of output 14 [2023-11-21 18:57:31,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:57:31,753 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 18:57:31,753 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 18:57:31,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [841430213] [2023-11-21 18:57:31,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [841430213] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 18:57:31,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 18:57:31,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 18:57:31,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058985404] [2023-11-21 18:57:31,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 18:57:31,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 18:57:31,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 18:57:31,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 18:57:31,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 18:57:31,760 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-11-21 18:57:34,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 18:57:34,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 18:57:34,929 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2023-11-21 18:57:34,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 18:57:34,930 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2023-11-21 18:57:34,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 18:57:34,931 INFO L225 Difference]: With dead ends: 33 [2023-11-21 18:57:34,931 INFO L226 Difference]: Without dead ends: 18 [2023-11-21 18:57:34,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-21 18:57:34,934 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 25 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-21 18:57:34,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 28 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2023-11-21 18:57:34,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-11-21 18:57:34,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-11-21 18:57:34,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 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) [2023-11-21 18:57:34,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2023-11-21 18:57:34,940 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 9 [2023-11-21 18:57:34,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 18:57:34,940 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2023-11-21 18:57:34,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-11-21 18:57:34,941 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2023-11-21 18:57:34,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-21 18:57:34,941 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:57:34,942 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 18:57:34,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/mathsat -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 [2023-11-21 18:57:35,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 18:57:35,143 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 18:57:35,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:57:35,143 INFO L85 PathProgramCache]: Analyzing trace with hash -601051293, now seen corresponding path program 1 times [2023-11-21 18:57:35,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 18:57:35,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [685713527] [2023-11-21 18:57:35,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:57:35,144 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 [2023-11-21 18:57:35,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 18:57:35,146 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/mathsat -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) [2023-11-21 18:57:35,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/mathsat -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 [2023-11-21 18:57:36,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:57:36,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 18:57:36,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:57:36,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:57:36,556 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 18:57:36,556 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 18:57:36,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [685713527] [2023-11-21 18:57:36,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [685713527] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 18:57:36,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 18:57:36,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 18:57:36,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567341344] [2023-11-21 18:57:36,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 18:57:36,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 18:57:36,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 18:57:36,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 18:57:36,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 18:57:36,559 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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) [2023-11-21 18:57:39,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 18:57:41,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 18:57:43,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 18:57:43,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 18:57:43,668 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2023-11-21 18:57:43,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 18:57:43,669 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2023-11-21 18:57:43,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 18:57:43,670 INFO L225 Difference]: With dead ends: 29 [2023-11-21 18:57:43,670 INFO L226 Difference]: Without dead ends: 26 [2023-11-21 18:57:43,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-21 18:57:43,672 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 16 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-11-21 18:57:43,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 40 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 3 Unknown, 0 Unchecked, 7.0s Time] [2023-11-21 18:57:43,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-21 18:57:43,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 20. [2023-11-21 18:57:43,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 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) [2023-11-21 18:57:43,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2023-11-21 18:57:43,684 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 12 [2023-11-21 18:57:43,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 18:57:43,685 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2023-11-21 18:57:43,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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) [2023-11-21 18:57:43,687 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2023-11-21 18:57:43,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-21 18:57:43,688 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:57:43,689 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 18:57:43,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-21 18:57:43,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 18:57:43,889 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 18:57:43,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:57:43,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1812028577, now seen corresponding path program 1 times [2023-11-21 18:57:43,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 18:57:43,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1705199398] [2023-11-21 18:57:43,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:57:43,891 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 [2023-11-21 18:57:43,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 18:57:43,892 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/mathsat -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) [2023-11-21 18:57:43,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/mathsat -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 [2023-11-21 18:57:45,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:57:46,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 18:57:46,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:57:46,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:57:46,973 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 18:57:46,973 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 18:57:46,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1705199398] [2023-11-21 18:57:46,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1705199398] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 18:57:46,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 18:57:46,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 18:57:46,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48243030] [2023-11-21 18:57:46,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 18:57:46,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 18:57:46,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 18:57:46,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 18:57:46,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 18:57:46,976 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) 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) [2023-11-21 18:57:47,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 18:57:47,102 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2023-11-21 18:57:47,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 18:57:47,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) 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 [2023-11-21 18:57:47,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 18:57:47,104 INFO L225 Difference]: With dead ends: 26 [2023-11-21 18:57:47,104 INFO L226 Difference]: Without dead ends: 16 [2023-11-21 18:57:47,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 18:57:47,105 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 18:57:47,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 16 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 18:57:47,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-11-21 18:57:47,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-11-21 18:57:47,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.0) internal successors, (15), 15 states have internal predecessors, (15), 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) [2023-11-21 18:57:47,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2023-11-21 18:57:47,109 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 14 [2023-11-21 18:57:47,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 18:57:47,110 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2023-11-21 18:57:47,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) 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) [2023-11-21 18:57:47,110 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2023-11-21 18:57:47,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-21 18:57:47,111 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:57:47,111 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 18:57:47,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-21 18:57:47,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 18:57:47,312 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 18:57:47,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:57:47,313 INFO L85 PathProgramCache]: Analyzing trace with hash -703095441, now seen corresponding path program 1 times [2023-11-21 18:57:47,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 18:57:47,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1917579190] [2023-11-21 18:57:47,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:57:47,314 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 [2023-11-21 18:57:47,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 18:57:47,315 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/mathsat -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) [2023-11-21 18:57:47,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/mathsat -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 [2023-11-21 18:57:48,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:57:48,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-21 18:57:48,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:57:49,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:57:49,145 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 18:57:49,145 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 18:57:49,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1917579190] [2023-11-21 18:57:49,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1917579190] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 18:57:49,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 18:57:49,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 18:57:49,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599931183] [2023-11-21 18:57:49,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 18:57:49,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 18:57:49,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 18:57:49,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 18:57:49,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-21 18:57:49,148 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 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) [2023-11-21 18:57:50,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 18:57:50,046 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2023-11-21 18:57:50,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 18:57:50,049 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 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 15 [2023-11-21 18:57:50,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 18:57:50,049 INFO L225 Difference]: With dead ends: 16 [2023-11-21 18:57:50,049 INFO L226 Difference]: Without dead ends: 0 [2023-11-21 18:57:50,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-21 18:57:50,051 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 15 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 18:57:50,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 32 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 18:57:50,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-21 18:57:50,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-21 18:57:50,054 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) [2023-11-21 18:57:50,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-21 18:57:50,054 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2023-11-21 18:57:50,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 18:57:50,055 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-21 18:57:50,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 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) [2023-11-21 18:57:50,055 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-21 18:57:50,056 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-21 18:57:50,065 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-21 18:57:50,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-21 18:57:50,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 18:57:50,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-21 18:57:50,515 INFO L899 garLoopResultBuilder]: For program point L143(line 143) no Hoare annotation was computed. [2023-11-21 18:57:50,516 INFO L899 garLoopResultBuilder]: For program point L143-2(lines 143 146) no Hoare annotation was computed. [2023-11-21 18:57:50,516 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 131 149) no Hoare annotation was computed. [2023-11-21 18:57:50,516 INFO L899 garLoopResultBuilder]: For program point L144(line 144) no Hoare annotation was computed. [2023-11-21 18:57:50,516 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-21 18:57:50,516 INFO L899 garLoopResultBuilder]: For program point atan_float_returnLabel#1(lines 55 117) no Hoare annotation was computed. [2023-11-21 18:57:50,516 INFO L899 garLoopResultBuilder]: For program point L122-1(lines 122 126) no Hoare annotation was computed. [2023-11-21 18:57:50,517 INFO L895 garLoopResultBuilder]: At program point L122-2(lines 122 126) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and |ULTIMATE.start_main_#t~short28#1| (= |ULTIMATE.start_atan_float_#res#1| .cse0) (= .cse0 |ULTIMATE.start___signbit_float_~x#1|) (= |ULTIMATE.start_main_~res~0#1| .cse0))) [2023-11-21 18:57:50,517 INFO L899 garLoopResultBuilder]: For program point L23(lines 23 27) no Hoare annotation was computed. [2023-11-21 18:57:50,517 INFO L899 garLoopResultBuilder]: For program point L122-3(lines 122 126) no Hoare annotation was computed. [2023-11-21 18:57:50,517 INFO L895 garLoopResultBuilder]: At program point L23-1(lines 23 27) the Hoare annotation is: false [2023-11-21 18:57:50,517 INFO L899 garLoopResultBuilder]: For program point L23-2(lines 23 27) no Hoare annotation was computed. [2023-11-21 18:57:50,517 INFO L899 garLoopResultBuilder]: For program point L73(lines 73 98) no Hoare annotation was computed. [2023-11-21 18:57:50,517 INFO L899 garLoopResultBuilder]: For program point L65(lines 65 72) no Hoare annotation was computed. [2023-11-21 18:57:50,517 INFO L899 garLoopResultBuilder]: For program point L90-2(lines 73 98) no Hoare annotation was computed. [2023-11-21 18:57:50,518 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 144) no Hoare annotation was computed. [2023-11-21 18:57:50,518 INFO L899 garLoopResultBuilder]: For program point L74(lines 74 77) no Hoare annotation was computed. [2023-11-21 18:57:50,518 INFO L899 garLoopResultBuilder]: For program point L74-2(lines 74 77) no Hoare annotation was computed. [2023-11-21 18:57:50,518 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-21 18:57:50,518 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 76) no Hoare annotation was computed. [2023-11-21 18:57:50,518 INFO L899 garLoopResultBuilder]: For program point L59-1(lines 59 63) no Hoare annotation was computed. [2023-11-21 18:57:50,518 INFO L895 garLoopResultBuilder]: At program point L59-2(lines 59 63) the Hoare annotation is: (and (= ~huge_atan~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) (= currentRoundingMode roundNearestTiesToEven) (= (fp.neg (_ +zero 8 24)) |ULTIMATE.start_atan_float_~x#1|)) [2023-11-21 18:57:50,519 INFO L899 garLoopResultBuilder]: For program point L59-3(lines 59 63) no Hoare annotation was computed. [2023-11-21 18:57:50,519 INFO L899 garLoopResultBuilder]: For program point L18-1(lines 18 22) no Hoare annotation was computed. [2023-11-21 18:57:50,519 INFO L895 garLoopResultBuilder]: At program point L18-2(lines 18 22) the Hoare annotation is: false [2023-11-21 18:57:50,524 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-21 18:57:50,527 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 18:57:50,541 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression ~roundNearestTiesToEven could not be translated [2023-11-21 18:57:50,542 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Missing case for function ~Pluszero~32 [2023-11-21 18:57:50,543 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short28 could not be translated [2023-11-21 18:57:50,544 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Missing case for function ~Pluszero~32 [2023-11-21 18:57:50,544 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Missing case for function ~Pluszero~32 [2023-11-21 18:57:50,544 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~res~0 [2023-11-21 18:57:50,544 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Missing case for function ~Pluszero~32 [2023-11-21 18:57:50,545 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 06:57:50 BoogieIcfgContainer [2023-11-21 18:57:50,545 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 18:57:50,546 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 18:57:50,546 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 18:57:50,546 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 18:57:50,547 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:57:23" (3/4) ... [2023-11-21 18:57:50,549 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-21 18:57:50,561 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2023-11-21 18:57:50,561 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2023-11-21 18:57:50,562 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-21 18:57:50,563 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-21 18:57:50,683 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/witness.graphml [2023-11-21 18:57:50,683 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/witness.yml [2023-11-21 18:57:50,683 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 18:57:50,684 INFO L158 Benchmark]: Toolchain (without parser) took 39954.52ms. Allocated memory is still 75.5MB. Free memory was 51.5MB in the beginning and 43.2MB in the end (delta: 8.3MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. [2023-11-21 18:57:50,684 INFO L158 Benchmark]: CDTParser took 1.51ms. Allocated memory is still 56.6MB. Free memory was 32.5MB in the beginning and 32.4MB in the end (delta: 92.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:57:50,685 INFO L158 Benchmark]: CACSL2BoogieTranslator took 363.96ms. Allocated memory is still 75.5MB. Free memory was 51.3MB in the beginning and 37.7MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-21 18:57:50,686 INFO L158 Benchmark]: Boogie Procedure Inliner took 122.18ms. Allocated memory is still 75.5MB. Free memory was 37.7MB in the beginning and 52.6MB in the end (delta: -14.9MB). Peak memory consumption was 3.4MB. Max. memory is 16.1GB. [2023-11-21 18:57:50,686 INFO L158 Benchmark]: Boogie Preprocessor took 56.17ms. Allocated memory is still 75.5MB. Free memory was 52.6MB in the beginning and 50.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:57:50,686 INFO L158 Benchmark]: RCFGBuilder took 11839.48ms. Allocated memory is still 75.5MB. Free memory was 50.2MB in the beginning and 35.6MB in the end (delta: 14.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-21 18:57:50,687 INFO L158 Benchmark]: TraceAbstraction took 27427.31ms. Allocated memory is still 75.5MB. Free memory was 34.9MB in the beginning and 49.5MB in the end (delta: -14.5MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. [2023-11-21 18:57:50,688 INFO L158 Benchmark]: Witness Printer took 137.83ms. Allocated memory is still 75.5MB. Free memory was 49.5MB in the beginning and 43.2MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-21 18:57:50,690 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.51ms. Allocated memory is still 56.6MB. Free memory was 32.5MB in the beginning and 32.4MB in the end (delta: 92.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 363.96ms. Allocated memory is still 75.5MB. Free memory was 51.3MB in the beginning and 37.7MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 122.18ms. Allocated memory is still 75.5MB. Free memory was 37.7MB in the beginning and 52.6MB in the end (delta: -14.9MB). Peak memory consumption was 3.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.17ms. Allocated memory is still 75.5MB. Free memory was 52.6MB in the beginning and 50.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 11839.48ms. Allocated memory is still 75.5MB. Free memory was 50.2MB in the beginning and 35.6MB in the end (delta: 14.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 27427.31ms. Allocated memory is still 75.5MB. Free memory was 34.9MB in the beginning and 49.5MB in the end (delta: -14.5MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. * Witness Printer took 137.83ms. Allocated memory is still 75.5MB. Free memory was 49.5MB in the beginning and 43.2MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression ~roundNearestTiesToEven could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Missing case for function ~Pluszero~32 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short28 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Missing case for function ~Pluszero~32 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Missing case for function ~Pluszero~32 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~res~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Missing case for function ~Pluszero~32 * 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 - PositiveResult [Line: 144]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 27.3s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 16.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 mSolverCounterUnknown, 57 SdHoareTripleChecker+Valid, 15.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 57 mSDsluCounter, 139 SdHoareTripleChecker+Invalid, 15.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 77 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 82 IncrementalHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 62 mSDtfsCounter, 82 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 24, 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, 5 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 6 NumberOfFragments, 38 HoareAnnotationTreeSize, 4 FomulaSimplifications, 8 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 5.6s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 53 ConstructedInterpolants, 1 QuantifiedInterpolants, 309 SizeOfPredicates, 27 NumberOfNonLiveVariables, 389 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 122]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2023-11-21 18:57:50,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5e46d3-7477-4d75-ac5c-562abe7b0e8b/bin/utaipan-verify-QoSU8krkJ5/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 Writing output log to file Ultimate.log Result: TRUE