./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/bin/utaipan-verify-SwPr7d2a91 --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 1f9d99a1e914bb5db4e356a6920ef9cb10f38df5cae5223ce35a4e418e6502dd --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:50:18,402 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:50:18,518 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-24 23:50:18,531 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:50:18,531 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:50:18,576 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:50:18,577 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:50:18,578 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:50:18,579 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:50:18,584 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:50:18,585 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:50:18,586 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:50:18,586 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:50:18,588 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:50:18,588 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:50:18,589 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:50:18,589 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:50:18,590 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:50:18,590 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:50:18,591 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:50:18,591 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:50:18,592 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:50:18,593 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:50:18,593 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:50:18,594 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:50:18,594 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:50:18,595 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:50:18,595 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:50:18,596 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:50:18,596 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:50:18,597 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:50:18,598 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:50:18,598 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:50:18,598 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:50:18,599 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:50:18,599 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:50:18,599 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:50:18,599 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:50:18,600 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:50:18,600 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:50:18,600 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:50:18,601 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:50:18,601 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:50:18,601 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:50:18,602 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:50:18,602 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:50:18,602 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:50:18,603 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_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f9d99a1e914bb5db4e356a6920ef9cb10f38df5cae5223ce35a4e418e6502dd [2023-11-24 23:50:18,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:50:18,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:50:18,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:50:18,974 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:50:18,974 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:50:18,976 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c [2023-11-24 23:50:22,124 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:50:22,329 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:50:22,330 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c [2023-11-24 23:50:22,338 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/bin/utaipan-verify-SwPr7d2a91/data/62bb647ed/9a8c4c5ec723463aac9e27b7889d4ba1/FLAG534e1f57a [2023-11-24 23:50:22,715 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/bin/utaipan-verify-SwPr7d2a91/data/62bb647ed/9a8c4c5ec723463aac9e27b7889d4ba1 [2023-11-24 23:50:22,717 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:50:22,719 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:50:22,721 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:50:22,721 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:50:22,728 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:50:22,731 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:50:22" (1/1) ... [2023-11-24 23:50:22,732 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@735525ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:22, skipping insertion in model container [2023-11-24 23:50:22,733 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:50:22" (1/1) ... [2023-11-24 23:50:22,753 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:50:22,911 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_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c[585,598] [2023-11-24 23:50:22,927 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:50:22,939 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:50:22,952 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_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c[585,598] [2023-11-24 23:50:22,960 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:50:22,976 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:50:22,976 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:22 WrapperNode [2023-11-24 23:50:22,976 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:50:22,978 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:50:22,978 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:50:22,978 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:50:22,986 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:22" (1/1) ... [2023-11-24 23:50:22,994 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:22" (1/1) ... [2023-11-24 23:50:23,016 INFO L138 Inliner]: procedures = 18, calls = 17, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 47 [2023-11-24 23:50:23,016 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:50:23,017 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:50:23,017 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:50:23,018 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:50:23,027 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:22" (1/1) ... [2023-11-24 23:50:23,027 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:22" (1/1) ... [2023-11-24 23:50:23,030 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:22" (1/1) ... [2023-11-24 23:50:23,030 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:22" (1/1) ... [2023-11-24 23:50:23,037 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:22" (1/1) ... [2023-11-24 23:50:23,039 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:22" (1/1) ... [2023-11-24 23:50:23,040 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:22" (1/1) ... [2023-11-24 23:50:23,041 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:22" (1/1) ... [2023-11-24 23:50:23,044 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:50:23,045 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:50:23,045 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:50:23,045 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:50:23,046 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:22" (1/1) ... [2023-11-24 23:50:23,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:50:23,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:50:23,078 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:50:23,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:50:23,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:50:23,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:50:23,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:50:23,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-24 23:50:23,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:50:23,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-24 23:50:23,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:50:23,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:50:23,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:50:23,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:50:23,195 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:50:23,198 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:50:23,321 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:50:23,413 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:50:23,413 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 23:50:23,415 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:50:23 BoogieIcfgContainer [2023-11-24 23:50:23,415 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:50:23,418 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:50:23,418 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:50:23,422 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:50:23,422 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:50:22" (1/3) ... [2023-11-24 23:50:23,423 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b5c5a2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:50:23, skipping insertion in model container [2023-11-24 23:50:23,423 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:22" (2/3) ... [2023-11-24 23:50:23,424 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b5c5a2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:50:23, skipping insertion in model container [2023-11-24 23:50:23,424 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:50:23" (3/3) ... [2023-11-24 23:50:23,425 INFO L112 eAbstractionObserver]: Analyzing ICFG inv_sqrt_Quake.c [2023-11-24 23:50:23,455 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:50:23,456 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:50:23,524 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:50:23,531 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;@3353ee2a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:50:23,532 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:50:23,536 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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) [2023-11-24 23:50:23,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 23:50:23,542 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:23,543 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-24 23:50:23,543 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:50:23,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:23,549 INFO L85 PathProgramCache]: Analyzing trace with hash 60993, now seen corresponding path program 1 times [2023-11-24 23:50:23,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:50:23,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562867749] [2023-11-24 23:50:23,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:23,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:50:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:50:23,736 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 23:50:23,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:50:23,804 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-24 23:50:23,807 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 23:50:23,808 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-24 23:50:23,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:50:23,840 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-24 23:50:23,867 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 23:50:23,895 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 11:50:23 BoogieIcfgContainer [2023-11-24 23:50:23,895 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 23:50:23,897 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 23:50:23,897 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 23:50:23,898 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 23:50:23,898 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:50:23" (3/4) ... [2023-11-24 23:50:23,903 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-24 23:50:23,904 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 23:50:23,906 INFO L158 Benchmark]: Toolchain (without parser) took 1186.43ms. Allocated memory is still 153.1MB. Free memory was 105.8MB in the beginning and 121.7MB in the end (delta: -15.9MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:50:23,906 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 109.1MB. Free memory is still 50.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:50:23,907 INFO L158 Benchmark]: CACSL2BoogieTranslator took 256.22ms. Allocated memory is still 153.1MB. Free memory was 105.5MB in the beginning and 95.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-24 23:50:23,908 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.96ms. Allocated memory is still 153.1MB. Free memory was 95.0MB in the beginning and 93.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:50:23,909 INFO L158 Benchmark]: Boogie Preprocessor took 26.64ms. Allocated memory is still 153.1MB. Free memory was 93.1MB in the beginning and 92.1MB in the end (delta: 971.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:50:23,915 INFO L158 Benchmark]: RCFGBuilder took 370.69ms. Allocated memory is still 153.1MB. Free memory was 92.1MB in the beginning and 79.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-24 23:50:23,916 INFO L158 Benchmark]: TraceAbstraction took 477.24ms. Allocated memory is still 153.1MB. Free memory was 78.8MB in the beginning and 122.1MB in the end (delta: -43.3MB). Peak memory consumption was 20.1MB. Max. memory is 16.1GB. [2023-11-24 23:50:23,917 INFO L158 Benchmark]: Witness Printer took 7.30ms. Allocated memory is still 153.1MB. Free memory was 122.0MB in the beginning and 121.7MB in the end (delta: 323.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:50:23,925 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 109.1MB. Free memory is still 50.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 256.22ms. Allocated memory is still 153.1MB. Free memory was 105.5MB in the beginning and 95.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.96ms. Allocated memory is still 153.1MB. Free memory was 95.0MB in the beginning and 93.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.64ms. Allocated memory is still 153.1MB. Free memory was 93.1MB in the beginning and 92.1MB in the end (delta: 971.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 370.69ms. Allocated memory is still 153.1MB. Free memory was 92.1MB in the beginning and 79.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 477.24ms. Allocated memory is still 153.1MB. Free memory was 78.8MB in the beginning and 122.1MB in the end (delta: -43.3MB). Peak memory consumption was 20.1MB. Max. memory is 16.1GB. * Witness Printer took 7.30ms. Allocated memory is still 153.1MB. Free memory was 122.0MB in the beginning and 121.7MB in the end (delta: 323.0kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13]: 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 48, overapproximation of someBinaryDOUBLEComparisonOperation at line 52, overapproximation of someBinaryArithmeticFLOAToperation at line 22. Possible FailurePath: [L45] float a,r; [L47] a = __VERIFIER_nondet_float() [L48] CALL assume_abort_if_not(a >= 0.1f && a <= 100.f) [L11] COND FALSE !(!cond) [L48] RET assume_abort_if_not(a >= 0.1f && a <= 100.f) [L50] CALL, EXPR InvSqrt(a) [L22] float xhalf = 0.5f*x; [L23] union float_int i; [L24] i.f = x [L25] EXPR i.i [L25] i.i = 0x5f3759df - (i.i>>1) [L26] EXPR i.f [L26] x = i.f [L27] x = x*(1.5f-xhalf*x*x) [L28] return x; [L28] return x; [L50] RET, EXPR InvSqrt(a) [L50] r = InvSqrt(a) [L52] CALL __VERIFIER_assert(r >= 0.f && r <= 10.) [L13] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L13] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-24 23:50:23,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/bin/utaipan-verify-SwPr7d2a91/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/bin/utaipan-verify-SwPr7d2a91 --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 1f9d99a1e914bb5db4e356a6920ef9cb10f38df5cae5223ce35a4e418e6502dd --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:50:26,725 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:50:26,868 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-24 23:50:26,876 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:50:26,877 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:50:26,922 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:50:26,923 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:50:26,923 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:50:26,924 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:50:26,929 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:50:26,930 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:50:26,930 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:50:26,931 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:50:26,933 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:50:26,933 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:50:26,934 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:50:26,935 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:50:26,935 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:50:26,936 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:50:26,937 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:50:26,938 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:50:26,938 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:50:26,939 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:50:26,939 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:50:26,940 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 23:50:26,940 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 23:50:26,940 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 23:50:26,941 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:50:26,941 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:50:26,942 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:50:26,943 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:50:26,944 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 23:50:26,944 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:50:26,944 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:50:26,945 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:50:26,945 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:50:26,946 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:50:26,946 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:50:26,946 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-24 23:50:26,947 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 23:50:26,948 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:50:26,948 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:50:26,948 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:50:26,949 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:50:26,949 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_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f9d99a1e914bb5db4e356a6920ef9cb10f38df5cae5223ce35a4e418e6502dd [2023-11-24 23:50:27,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:50:27,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:50:27,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:50:27,446 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:50:27,447 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:50:27,448 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c [2023-11-24 23:50:30,651 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:50:30,941 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:50:30,942 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c [2023-11-24 23:50:30,949 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/bin/utaipan-verify-SwPr7d2a91/data/14824700c/7d83a5e8e19343959041d0058226e0d7/FLAG04d9f7d23 [2023-11-24 23:50:30,964 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/bin/utaipan-verify-SwPr7d2a91/data/14824700c/7d83a5e8e19343959041d0058226e0d7 [2023-11-24 23:50:30,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:50:30,969 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:50:30,970 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:50:30,971 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:50:30,976 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:50:30,977 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:50:30" (1/1) ... [2023-11-24 23:50:30,978 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b829da0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:30, skipping insertion in model container [2023-11-24 23:50:30,978 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:50:30" (1/1) ... [2023-11-24 23:50:31,002 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:50:31,183 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_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c[585,598] [2023-11-24 23:50:31,199 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:50:31,217 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:50:31,231 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_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c[585,598] [2023-11-24 23:50:31,239 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:50:31,257 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:50:31,258 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:31 WrapperNode [2023-11-24 23:50:31,258 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:50:31,259 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:50:31,259 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:50:31,260 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:50:31,268 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:31" (1/1) ... [2023-11-24 23:50:31,293 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:31" (1/1) ... [2023-11-24 23:50:31,322 INFO L138 Inliner]: procedures = 21, calls = 17, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 48 [2023-11-24 23:50:31,322 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:50:31,323 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:50:31,324 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:50:31,324 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:50:31,333 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:31" (1/1) ... [2023-11-24 23:50:31,333 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:31" (1/1) ... [2023-11-24 23:50:31,345 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:31" (1/1) ... [2023-11-24 23:50:31,345 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:31" (1/1) ... [2023-11-24 23:50:31,365 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:31" (1/1) ... [2023-11-24 23:50:31,367 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:31" (1/1) ... [2023-11-24 23:50:31,369 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:31" (1/1) ... [2023-11-24 23:50:31,370 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:31" (1/1) ... [2023-11-24 23:50:31,374 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:50:31,375 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:50:31,375 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:50:31,384 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:50:31,385 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:31" (1/1) ... [2023-11-24 23:50:31,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:50:31,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:50:31,453 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:50:31,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:50:31,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:50:31,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-24 23:50:31,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:50:31,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2023-11-24 23:50:31,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-24 23:50:31,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:50:31,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:50:31,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2023-11-24 23:50:31,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:50:31,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-24 23:50:31,644 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:50:31,646 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:50:33,966 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:50:34,025 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:50:34,029 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 23:50:34,030 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:50:34 BoogieIcfgContainer [2023-11-24 23:50:34,030 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:50:34,033 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:50:34,033 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:50:34,037 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:50:34,038 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:50:30" (1/3) ... [2023-11-24 23:50:34,039 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c4bb514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:50:34, skipping insertion in model container [2023-11-24 23:50:34,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:31" (2/3) ... [2023-11-24 23:50:34,040 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c4bb514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:50:34, skipping insertion in model container [2023-11-24 23:50:34,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:50:34" (3/3) ... [2023-11-24 23:50:34,043 INFO L112 eAbstractionObserver]: Analyzing ICFG inv_sqrt_Quake.c [2023-11-24 23:50:34,064 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:50:34,064 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:50:34,112 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:50:34,118 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;@10909a15, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:50:34,118 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:50:34,121 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 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) [2023-11-24 23:50:34,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-24 23:50:34,126 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:34,127 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 23:50:34,128 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:50:34,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:34,132 INFO L85 PathProgramCache]: Analyzing trace with hash 53741492, now seen corresponding path program 1 times [2023-11-24 23:50:34,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:50:34,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1444914146] [2023-11-24 23:50:34,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:34,143 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 [2023-11-24 23:50:34,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:50:34,148 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/bin/utaipan-verify-SwPr7d2a91/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) [2023-11-24 23:50:34,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-24 23:50:34,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:34,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-24 23:50:34,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:50:34,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:50:34,509 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:50:34,509 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:50:34,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1444914146] [2023-11-24 23:50:34,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1444914146] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:50:34,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:50:34,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:50:34,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813510549] [2023-11-24 23:50:34,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:50:34,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 23:50:34,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:50:34,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 23:50:34,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 23:50:34,548 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 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) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-11-24 23:50:36,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:50:36,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:50:36,763 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2023-11-24 23:50:36,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 23:50:36,766 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2023-11-24 23:50:36,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:50:36,774 INFO L225 Difference]: With dead ends: 14 [2023-11-24 23:50:36,774 INFO L226 Difference]: Without dead ends: 6 [2023-11-24 23:50:36,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 23:50:36,781 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:50:36,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2023-11-24 23:50:36,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2023-11-24 23:50:36,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2023-11-24 23:50:36,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 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) [2023-11-24 23:50:36,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5 transitions. [2023-11-24 23:50:36,824 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 5 transitions. Word has length 5 [2023-11-24 23:50:36,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:50:36,825 INFO L495 AbstractCegarLoop]: Abstraction has 6 states and 5 transitions. [2023-11-24 23:50:36,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-11-24 23:50:36,825 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 5 transitions. [2023-11-24 23:50:36,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-24 23:50:36,826 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:36,826 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 23:50:36,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:50:37,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-24 23:50:37,032 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:50:37,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:37,033 INFO L85 PathProgramCache]: Analyzing trace with hash 53801074, now seen corresponding path program 1 times [2023-11-24 23:50:37,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:50:37,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [350786242] [2023-11-24 23:50:37,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:37,035 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 [2023-11-24 23:50:37,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:50:37,037 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/bin/utaipan-verify-SwPr7d2a91/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) [2023-11-24 23:50:37,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac159c58-7b1b-4d91-99e4-b774cc6ab3bb/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-24 23:50:38,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:38,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-24 23:50:38,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:51:30,763 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse6 ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 100.0)) (.cse7 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 10.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)))) (or (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)) (or (exists ((|v_skolemized_q#valueAsBitvector_7| (_ BitVec 32))) (let ((.cse0 (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_7|)))) (and (fp.leq .cse0 .cse1) (not (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven (let ((.cse2 (let ((.cse5 (bvadd (_ bv1597463007 32) (bvneg (bvashr |v_skolemized_q#valueAsBitvector_7| (_ bv1 32)))))) (fp ((_ extract 31 31) .cse5) ((_ extract 30 23) .cse5) ((_ extract 22 0) .cse5))))) (fp.mul roundNearestTiesToEven .cse2 (fp.sub roundNearestTiesToEven .cse3 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 .cse0) .cse2) .cse2))))) .cse6)) (fp.geq .cse0 .cse7)))) (exists ((|v_skolemized_q#valueAsBitvector_7| (_ BitVec 32))) (let ((.cse9 (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_7|)))) (and (not (fp.geq (let ((.cse8 (let ((.cse10 (bvadd (_ bv1597463007 32) (bvneg (bvashr |v_skolemized_q#valueAsBitvector_7| (_ bv1 32)))))) (fp ((_ extract 31 31) .cse10) ((_ extract 30 23) .cse10) ((_ extract 22 0) .cse10))))) (fp.mul roundNearestTiesToEven .cse8 (fp.sub roundNearestTiesToEven .cse3 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 .cse9) .cse8) .cse8)))) (_ +zero 8 24))) (fp.leq .cse9 .cse1) (fp.geq .cse9 .cse7)))))) (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) (exists ((|v_skolemized_q#valueAsBitvector_7| (_ BitVec 32))) (let ((.cse12 (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_7|)))) (let ((.cse11 (let ((.cse13 (let ((.cse14 (bvadd (_ bv1597463007 32) (bvneg (bvashr |v_skolemized_q#valueAsBitvector_7| (_ bv1 32)))))) (fp ((_ extract 31 31) .cse14) ((_ extract 30 23) .cse14) ((_ extract 22 0) .cse14))))) (fp.mul roundNearestTiesToEven .cse13 (fp.sub roundNearestTiesToEven .cse3 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 .cse12) .cse13) .cse13)))))) (and (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven .cse11) .cse6) (fp.leq .cse12 .cse1) (fp.geq .cse12 .cse7) (fp.geq .cse11 (_ +zero 8 24))))))))) is different from false