./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float20.i --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_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float20.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ebbeb933faa53c0420039d774ec4b6190cacf1becebc5ed29363e09aaa5dc31e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:59:27,137 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:59:27,199 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 02:59:27,203 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:59:27,204 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:59:27,228 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:59:27,228 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:59:27,229 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:59:27,229 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:59:27,230 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:59:27,230 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:59:27,231 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:59:27,232 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:59:27,232 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:59:27,233 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:59:27,233 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:59:27,234 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:59:27,234 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:59:27,235 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:59:27,235 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:59:27,236 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:59:27,237 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:59:27,237 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:59:27,237 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:59:27,238 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:59:27,238 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:59:27,239 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:59:27,239 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:59:27,240 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:59:27,240 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:59:27,240 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:59:27,241 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:59:27,242 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:59:27,242 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:59:27,242 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:59:27,243 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:59:27,243 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 02:59:27,243 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:59:27,244 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:59:27,244 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:59:27,244 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:59:27,245 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:59:27,245 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebbeb933faa53c0420039d774ec4b6190cacf1becebc5ed29363e09aaa5dc31e [2023-11-29 02:59:27,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:59:27,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:59:27,468 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:59:27,469 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:59:27,469 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:59:27,471 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/floats-cbmc-regression/float20.i [2023-11-29 02:59:30,200 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:59:30,376 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:59:30,377 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/sv-benchmarks/c/floats-cbmc-regression/float20.i [2023-11-29 02:59:30,382 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/data/5ad5d4e0a/73efae06771c4a7cbf480d0eaacb604e/FLAG5d39994c4 [2023-11-29 02:59:30,397 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/data/5ad5d4e0a/73efae06771c4a7cbf480d0eaacb604e [2023-11-29 02:59:30,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:59:30,401 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:59:30,403 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:59:30,403 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:59:30,408 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:59:30,409 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:59:30" (1/1) ... [2023-11-29 02:59:30,410 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@679071fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:59:30, skipping insertion in model container [2023-11-29 02:59:30,410 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:59:30" (1/1) ... [2023-11-29 02:59:30,433 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:59:30,584 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_93bec0da-70ce-475f-8f08-9287871d8249/sv-benchmarks/c/floats-cbmc-regression/float20.i[1032,1045] [2023-11-29 02:59:30,595 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_93bec0da-70ce-475f-8f08-9287871d8249/sv-benchmarks/c/floats-cbmc-regression/float20.i[1306,1319] [2023-11-29 02:59:30,601 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_93bec0da-70ce-475f-8f08-9287871d8249/sv-benchmarks/c/floats-cbmc-regression/float20.i[1464,1477] [2023-11-29 02:59:30,604 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:59:30,614 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:59:30,628 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_93bec0da-70ce-475f-8f08-9287871d8249/sv-benchmarks/c/floats-cbmc-regression/float20.i[1032,1045] [2023-11-29 02:59:30,633 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_93bec0da-70ce-475f-8f08-9287871d8249/sv-benchmarks/c/floats-cbmc-regression/float20.i[1306,1319] [2023-11-29 02:59:30,636 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_93bec0da-70ce-475f-8f08-9287871d8249/sv-benchmarks/c/floats-cbmc-regression/float20.i[1464,1477] [2023-11-29 02:59:30,638 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:59:30,650 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:59:30,651 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:59:30 WrapperNode [2023-11-29 02:59:30,651 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:59:30,652 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:59:30,652 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:59:30,652 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:59:30,658 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:59:30" (1/1) ... [2023-11-29 02:59:30,664 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:59:30" (1/1) ... [2023-11-29 02:59:30,679 INFO L138 Inliner]: procedures = 18, calls = 9, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 49 [2023-11-29 02:59:30,680 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:59:30,680 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:59:30,681 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:59:30,681 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:59:30,689 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:59:30" (1/1) ... [2023-11-29 02:59:30,689 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:59:30" (1/1) ... [2023-11-29 02:59:30,690 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:59:30" (1/1) ... [2023-11-29 02:59:30,699 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 02:59:30,700 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:59:30" (1/1) ... [2023-11-29 02:59:30,700 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:59:30" (1/1) ... [2023-11-29 02:59:30,704 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:59:30" (1/1) ... [2023-11-29 02:59:30,707 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:59:30" (1/1) ... [2023-11-29 02:59:30,708 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:59:30" (1/1) ... [2023-11-29 02:59:30,709 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:59:30" (1/1) ... [2023-11-29 02:59:30,711 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:59:30,712 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:59:30,712 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:59:30,712 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:59:30,713 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:59:30" (1/1) ... [2023-11-29 02:59:30,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:59:30,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:59:30,741 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:59:30,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:59:30,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:59:30,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 02:59:30,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:59:30,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:59:30,849 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:59:30,851 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:59:30,956 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:59:30,978 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:59:30,979 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 02:59:30,979 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:59:30 BoogieIcfgContainer [2023-11-29 02:59:30,979 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:59:30,982 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:59:30,982 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:59:30,985 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:59:30,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:59:30" (1/3) ... [2023-11-29 02:59:30,986 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74c38a31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:59:30, skipping insertion in model container [2023-11-29 02:59:30,986 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:59:30" (2/3) ... [2023-11-29 02:59:30,986 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74c38a31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:59:30, skipping insertion in model container [2023-11-29 02:59:30,986 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:59:30" (3/3) ... [2023-11-29 02:59:30,988 INFO L112 eAbstractionObserver]: Analyzing ICFG float20.i [2023-11-29 02:59:31,003 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:59:31,003 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-29 02:59:31,044 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:59:31,051 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=PETRI_NET, 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;@658998b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:59:31,051 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-29 02:59:31,055 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 16 states have (on average 1.5625) internal successors, (25), 19 states have internal predecessors, (25), 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) [2023-11-29 02:59:31,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-29 02:59:31,060 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:59:31,060 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 02:59:31,061 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:59:31,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:59:31,066 INFO L85 PathProgramCache]: Analyzing trace with hash 82351358, now seen corresponding path program 1 times [2023-11-29 02:59:31,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:59:31,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795057377] [2023-11-29 02:59:31,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:59:31,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:59:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:59:31,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:59:31,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:59:31,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795057377] [2023-11-29 02:59:31,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795057377] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:59:31,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:59:31,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:59:31,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347300009] [2023-11-29 02:59:31,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:59:31,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 02:59:31,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:59:31,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 02:59:31,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 02:59:31,208 INFO L87 Difference]: Start difference. First operand has 20 states, 16 states have (on average 1.5625) internal successors, (25), 19 states have internal predecessors, (25), 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) [2023-11-29 02:59:31,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:59:31,243 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2023-11-29 02:59:31,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 02:59:31,246 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 [2023-11-29 02:59:31,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:59:31,253 INFO L225 Difference]: With dead ends: 38 [2023-11-29 02:59:31,253 INFO L226 Difference]: Without dead ends: 18 [2023-11-29 02:59:31,256 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 [2023-11-29 02:59:31,260 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:59:31,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:59:31,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-11-29 02:59:31,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-11-29 02:59:31,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 17 states have internal predecessors, (17), 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) [2023-11-29 02:59:31,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2023-11-29 02:59:31,300 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 5 [2023-11-29 02:59:31,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:59:31,300 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2023-11-29 02:59:31,300 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) [2023-11-29 02:59:31,301 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2023-11-29 02:59:31,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-29 02:59:31,301 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:59:31,301 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 02:59:31,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 02:59:31,302 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:59:31,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:59:31,303 INFO L85 PathProgramCache]: Analyzing trace with hash 82410940, now seen corresponding path program 1 times [2023-11-29 02:59:31,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:59:31,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278627867] [2023-11-29 02:59:31,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:59:31,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:59:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:59:31,314 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:59:31,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:59:31,339 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:59:31,340 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 02:59:31,342 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-29 02:59:31,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-11-29 02:59:31,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-11-29 02:59:31,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 02:59:31,349 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-29 02:59:31,352 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 02:59:31,368 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 02:59:31 BoogieIcfgContainer [2023-11-29 02:59:31,368 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 02:59:31,369 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 02:59:31,369 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 02:59:31,369 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 02:59:31,369 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:59:30" (3/4) ... [2023-11-29 02:59:31,372 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-29 02:59:31,373 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 02:59:31,374 INFO L158 Benchmark]: Toolchain (without parser) took 972.62ms. Allocated memory was 136.3MB in the beginning and 184.5MB in the end (delta: 48.2MB). Free memory was 98.5MB in the beginning and 149.9MB in the end (delta: -51.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 02:59:31,374 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 100.7MB. Free memory is still 53.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 02:59:31,375 INFO L158 Benchmark]: CACSL2BoogieTranslator took 248.62ms. Allocated memory is still 136.3MB. Free memory was 98.1MB in the beginning and 85.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-29 02:59:31,375 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.98ms. Allocated memory is still 136.3MB. Free memory was 85.5MB in the beginning and 84.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 02:59:31,376 INFO L158 Benchmark]: Boogie Preprocessor took 30.67ms. Allocated memory is still 136.3MB. Free memory was 84.2MB in the beginning and 82.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 02:59:31,377 INFO L158 Benchmark]: RCFGBuilder took 267.50ms. Allocated memory is still 136.3MB. Free memory was 82.1MB in the beginning and 72.5MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-29 02:59:31,377 INFO L158 Benchmark]: TraceAbstraction took 386.53ms. Allocated memory was 136.3MB in the beginning and 184.5MB in the end (delta: 48.2MB). Free memory was 71.7MB in the beginning and 151.0MB in the end (delta: -79.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 02:59:31,378 INFO L158 Benchmark]: Witness Printer took 4.36ms. Allocated memory is still 184.5MB. Free memory was 151.0MB in the beginning and 149.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 02:59:31,381 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 100.7MB. Free memory is still 53.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 248.62ms. Allocated memory is still 136.3MB. Free memory was 98.1MB in the beginning and 85.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.98ms. Allocated memory is still 136.3MB. Free memory was 85.5MB in the beginning and 84.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.67ms. Allocated memory is still 136.3MB. Free memory was 84.2MB in the beginning and 82.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 267.50ms. Allocated memory is still 136.3MB. Free memory was 82.1MB in the beginning and 72.5MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 386.53ms. Allocated memory was 136.3MB in the beginning and 184.5MB in the end (delta: 48.2MB). Free memory was 71.7MB in the beginning and 151.0MB in the end (delta: -79.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.36ms. Allocated memory is still 184.5MB. Free memory was 151.0MB in the beginning and 149.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 21]: 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 21, overapproximation of someBinaryArithmeticFLOAToperation at line 19, overapproximation of someBinaryArithmeticDOUBLEoperation at line 18. Possible FailurePath: [L48] float f=__VERIFIER_nondet_float(); [L49] CALL bug(f) [L17] COND FALSE !(!(min == 0x1.fffffep-105f)) VAL [\old(min)=52, min=52] [L18] float modifier = (0x1.0p-23 * (1<<1)); [L19] float ulpdiff = min * modifier; VAL [\old(min)=52, min=52] [L21] COND TRUE !(ulpdiff == 0x1p-126f) VAL [\old(min)=52, min=52] [L21] reach_error() VAL [\old(min)=52, min=52] - UnprovableResult [Line: 32]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 42]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 17 mSDtfsCounter, 2 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=20occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 4 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 [2023-11-29 02:59:31,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float20.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ebbeb933faa53c0420039d774ec4b6190cacf1becebc5ed29363e09aaa5dc31e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:59:33,406 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:59:33,481 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-29 02:59:33,488 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:59:33,489 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:59:33,518 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:59:33,519 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:59:33,520 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:59:33,521 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:59:33,521 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:59:33,522 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:59:33,523 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:59:33,524 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:59:33,524 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:59:33,525 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:59:33,525 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:59:33,526 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:59:33,527 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:59:33,527 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:59:33,528 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:59:33,528 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:59:33,529 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:59:33,529 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:59:33,530 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 02:59:33,530 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 02:59:33,531 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 02:59:33,531 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:59:33,531 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:59:33,532 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:59:33,532 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:59:33,533 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:59:33,533 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:59:33,534 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:59:33,534 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:59:33,534 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:59:33,534 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:59:33,535 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:59:33,535 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 02:59:33,535 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 02:59:33,535 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:59:33,536 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:59:33,536 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:59:33,536 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:59:33,536 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:59:33,537 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 02:59:33,537 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebbeb933faa53c0420039d774ec4b6190cacf1becebc5ed29363e09aaa5dc31e [2023-11-29 02:59:33,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:59:33,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:59:33,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:59:33,888 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:59:33,888 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:59:33,890 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/floats-cbmc-regression/float20.i [2023-11-29 02:59:36,649 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:59:36,849 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:59:36,849 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/sv-benchmarks/c/floats-cbmc-regression/float20.i [2023-11-29 02:59:36,857 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/data/b07c249ad/eb047e05116a4137b88f4bf4345b530f/FLAG73bdc5d3d [2023-11-29 02:59:36,872 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/data/b07c249ad/eb047e05116a4137b88f4bf4345b530f [2023-11-29 02:59:36,875 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:59:36,876 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:59:36,878 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:59:36,878 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:59:36,884 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:59:36,885 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:59:36" (1/1) ... [2023-11-29 02:59:36,886 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c56fa19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:59:36, skipping insertion in model container [2023-11-29 02:59:36,886 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:59:36" (1/1) ... [2023-11-29 02:59:36,909 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:59:37,077 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_93bec0da-70ce-475f-8f08-9287871d8249/sv-benchmarks/c/floats-cbmc-regression/float20.i[1032,1045] [2023-11-29 02:59:37,089 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_93bec0da-70ce-475f-8f08-9287871d8249/sv-benchmarks/c/floats-cbmc-regression/float20.i[1306,1319] [2023-11-29 02:59:37,095 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_93bec0da-70ce-475f-8f08-9287871d8249/sv-benchmarks/c/floats-cbmc-regression/float20.i[1464,1477] [2023-11-29 02:59:37,098 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:59:37,114 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:59:37,131 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_93bec0da-70ce-475f-8f08-9287871d8249/sv-benchmarks/c/floats-cbmc-regression/float20.i[1032,1045] [2023-11-29 02:59:37,135 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_93bec0da-70ce-475f-8f08-9287871d8249/sv-benchmarks/c/floats-cbmc-regression/float20.i[1306,1319] [2023-11-29 02:59:37,138 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_93bec0da-70ce-475f-8f08-9287871d8249/sv-benchmarks/c/floats-cbmc-regression/float20.i[1464,1477] [2023-11-29 02:59:37,140 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:59:37,157 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:59:37,158 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:59:37 WrapperNode [2023-11-29 02:59:37,158 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:59:37,159 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:59:37,159 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:59:37,160 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:59:37,167 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:59:37" (1/1) ... [2023-11-29 02:59:37,177 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:59:37" (1/1) ... [2023-11-29 02:59:37,197 INFO L138 Inliner]: procedures = 19, calls = 9, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 50 [2023-11-29 02:59:37,197 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:59:37,198 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:59:37,198 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:59:37,199 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:59:37,210 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:59:37" (1/1) ... [2023-11-29 02:59:37,210 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:59:37" (1/1) ... [2023-11-29 02:59:37,214 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:59:37" (1/1) ... [2023-11-29 02:59:37,225 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 02:59:37,225 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:59:37" (1/1) ... [2023-11-29 02:59:37,226 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:59:37" (1/1) ... [2023-11-29 02:59:37,233 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:59:37" (1/1) ... [2023-11-29 02:59:37,235 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:59:37" (1/1) ... [2023-11-29 02:59:37,237 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:59:37" (1/1) ... [2023-11-29 02:59:37,239 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:59:37" (1/1) ... [2023-11-29 02:59:37,242 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:59:37,243 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:59:37,243 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:59:37,243 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:59:37,244 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:59:37" (1/1) ... [2023-11-29 02:59:37,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:59:37,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:59:37,273 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:59:37,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:59:37,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:59:37,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 02:59:37,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:59:37,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:59:37,405 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:59:37,407 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:59:40,513 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:59:40,541 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:59:40,541 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 02:59:40,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:59:40 BoogieIcfgContainer [2023-11-29 02:59:40,542 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:59:40,545 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:59:40,545 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:59:40,547 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:59:40,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:59:36" (1/3) ... [2023-11-29 02:59:40,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@91078fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:59:40, skipping insertion in model container [2023-11-29 02:59:40,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:59:37" (2/3) ... [2023-11-29 02:59:40,549 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@91078fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:59:40, skipping insertion in model container [2023-11-29 02:59:40,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:59:40" (3/3) ... [2023-11-29 02:59:40,551 INFO L112 eAbstractionObserver]: Analyzing ICFG float20.i [2023-11-29 02:59:40,566 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:59:40,566 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-29 02:59:40,606 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:59:40,612 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=PETRI_NET, 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;@4e2102b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:59:40,612 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-29 02:59:40,616 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 16 states have (on average 1.5625) internal successors, (25), 19 states have internal predecessors, (25), 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) [2023-11-29 02:59:40,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-29 02:59:40,621 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:59:40,622 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 02:59:40,622 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:59:40,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:59:40,627 INFO L85 PathProgramCache]: Analyzing trace with hash 82351358, now seen corresponding path program 1 times [2023-11-29 02:59:40,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 02:59:40,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1443653884] [2023-11-29 02:59:40,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:59:40,637 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 [2023-11-29 02:59:40,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 02:59:40,638 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 02:59:40,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 02:59:40,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:59:40,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 02:59:40,738 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:59:40,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:59:40,751 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:59:40,751 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 02:59:40,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1443653884] [2023-11-29 02:59:40,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1443653884] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:59:40,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:59:40,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:59:40,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99221244] [2023-11-29 02:59:40,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:59:40,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 02:59:40,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 02:59:40,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 02:59:40,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 02:59:40,784 INFO L87 Difference]: Start difference. First operand has 20 states, 16 states have (on average 1.5625) internal successors, (25), 19 states have internal predecessors, (25), 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) [2023-11-29 02:59:40,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:59:40,806 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2023-11-29 02:59:40,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 02:59:40,809 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 [2023-11-29 02:59:40,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:59:40,816 INFO L225 Difference]: With dead ends: 38 [2023-11-29 02:59:40,816 INFO L226 Difference]: Without dead ends: 18 [2023-11-29 02:59:40,818 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 [2023-11-29 02:59:40,821 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:59:40,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:59:40,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-11-29 02:59:40,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-11-29 02:59:40,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 17 states have internal predecessors, (17), 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) [2023-11-29 02:59:40,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2023-11-29 02:59:40,845 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 5 [2023-11-29 02:59:40,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:59:40,845 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2023-11-29 02:59:40,846 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) [2023-11-29 02:59:40,846 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2023-11-29 02:59:40,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-29 02:59:40,846 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:59:40,853 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 02:59:40,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 02:59:41,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 02:59:41,055 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:59:41,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:59:41,055 INFO L85 PathProgramCache]: Analyzing trace with hash 82410940, now seen corresponding path program 1 times [2023-11-29 02:59:41,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 02:59:41,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1334248971] [2023-11-29 02:59:41,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:59:41,056 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 [2023-11-29 02:59:41,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 02:59:41,057 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 02:59:41,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 02:59:41,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:59:41,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 02:59:41,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:59:41,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:59:41,610 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:59:41,610 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 02:59:41,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1334248971] [2023-11-29 02:59:41,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1334248971] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:59:41,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:59:41,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:59:41,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86786513] [2023-11-29 02:59:41,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:59:41,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:59:41,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 02:59:41,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:59:41,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:59:41,614 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand has 5 states, 5 states have (on average 1.0) internal successors, (5), 4 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) [2023-11-29 02:59:46,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 02:59:46,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:59:46,817 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2023-11-29 02:59:46,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:59:46,817 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.0) internal successors, (5), 4 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 [2023-11-29 02:59:46,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:59:46,818 INFO L225 Difference]: With dead ends: 18 [2023-11-29 02:59:46,818 INFO L226 Difference]: Without dead ends: 16 [2023-11-29 02:59:46,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:59:46,820 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 14 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:59:46,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 10 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-11-29 02:59:46,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-11-29 02:59:46,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-11-29 02:59:46,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.0714285714285714) 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) [2023-11-29 02:59:46,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2023-11-29 02:59:46,824 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 5 [2023-11-29 02:59:46,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:59:46,824 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2023-11-29 02:59:46,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.0) internal successors, (5), 4 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) [2023-11-29 02:59:46,824 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2023-11-29 02:59:46,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-29 02:59:46,825 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:59:46,825 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:59:46,828 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/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)] Ended with exit code 0 [2023-11-29 02:59:47,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 02:59:47,026 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:59:47,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:59:47,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1534033249, now seen corresponding path program 1 times [2023-11-29 02:59:47,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 02:59:47,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1440501272] [2023-11-29 02:59:47,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:59:47,027 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 [2023-11-29 02:59:47,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 02:59:47,028 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 02:59:47,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 02:59:47,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:59:47,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 02:59:47,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:00:04,850 WARN L293 SmtUtils]: Spent 8.47s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 03:00:06,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:00:06,502 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:00:06,502 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:00:06,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1440501272] [2023-11-29 03:00:06,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1440501272] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:00:06,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:00:06,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:00:06,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216817697] [2023-11-29 03:00:06,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:00:06,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:00:06,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:00:06,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:00:06,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:00:06,505 INFO L87 Difference]: Start difference. First operand 16 states and 15 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) [2023-11-29 03:00:09,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:00:15,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:00:24,121 WARN L293 SmtUtils]: Spent 7.54s on a formula simplification. DAG size of input: 22 DAG size of output: 24 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 03:00:25,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:00:26,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:00:28,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:00:29,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:00:30,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:00:30,194 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2023-11-29 03:00:30,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:00:30,195 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 [2023-11-29 03:00:30,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:00:30,196 INFO L225 Difference]: With dead ends: 16 [2023-11-29 03:00:30,196 INFO L226 Difference]: Without dead ends: 14 [2023-11-29 03:00:30,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.2s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:00:30,198 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 8 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:00:30,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 5 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 14.7s Time] [2023-11-29 03:00:30,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-11-29 03:00:30,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-11-29 03:00:30,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0) internal successors, (13), 13 states have internal predecessors, (13), 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) [2023-11-29 03:00:30,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2023-11-29 03:00:30,202 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 9 [2023-11-29 03:00:30,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:00:30,202 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2023-11-29 03:00:30,202 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) [2023-11-29 03:00:30,203 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2023-11-29 03:00:30,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-29 03:00:30,203 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:00:30,203 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:00:30,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 03:00:30,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 03:00:30,404 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:00:30,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:00:30,405 INFO L85 PathProgramCache]: Analyzing trace with hash -100983098, now seen corresponding path program 1 times [2023-11-29 03:00:30,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:00:30,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [66697455] [2023-11-29 03:00:30,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:00:30,406 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 [2023-11-29 03:00:30,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:00:30,407 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 03:00:30,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 03:00:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:00:30,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:00:30,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:00:31,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:00:31,658 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:00:31,658 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:00:31,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [66697455] [2023-11-29 03:00:31,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [66697455] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:00:31,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:00:31,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:00:31,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262899993] [2023-11-29 03:00:31,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:00:31,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:00:31,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:00:31,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:00:31,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:00:31,660 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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) [2023-11-29 03:00:35,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.96s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:00:36,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:00:36,842 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2023-11-29 03:00:36,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:00:36,842 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2023-11-29 03:00:36,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:00:36,842 INFO L225 Difference]: With dead ends: 14 [2023-11-29 03:00:36,843 INFO L226 Difference]: Without dead ends: 0 [2023-11-29 03:00:36,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:00:36,844 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 1 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-29 03:00:36,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-11-29 03:00:36,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-29 03:00:36,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-29 03:00:36,846 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) [2023-11-29 03:00:36,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-29 03:00:36,846 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2023-11-29 03:00:36,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:00:36,846 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 03:00:36,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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) [2023-11-29 03:00:36,847 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-29 03:00:36,847 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-29 03:00:36,849 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-29 03:00:36,850 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-11-29 03:00:36,850 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-11-29 03:00:36,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 03:00:37,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 03:00:37,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-29 03:00:37,055 INFO L899 garLoopResultBuilder]: For program point L27(line 27) no Hoare annotation was computed. [2023-11-29 03:00:37,055 INFO L899 garLoopResultBuilder]: For program point L27-2(line 27) no Hoare annotation was computed. [2023-11-29 03:00:37,055 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 32) no Hoare annotation was computed. [2023-11-29 03:00:37,059 INFO L899 garLoopResultBuilder]: For program point L32(line 32) no Hoare annotation was computed. [2023-11-29 03:00:37,060 INFO L899 garLoopResultBuilder]: For program point L32-1(line 32) no Hoare annotation was computed. [2023-11-29 03:00:37,060 INFO L899 garLoopResultBuilder]: For program point L32-3(lines 26 35) no Hoare annotation was computed. [2023-11-29 03:00:37,060 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2023-11-29 03:00:37,060 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-29 03:00:37,060 INFO L899 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2023-11-29 03:00:37,060 INFO L899 garLoopResultBuilder]: For program point L21-1(line 21) no Hoare annotation was computed. [2023-11-29 03:00:37,060 INFO L899 garLoopResultBuilder]: For program point L21-3(lines 16 24) no Hoare annotation was computed. [2023-11-29 03:00:37,060 INFO L899 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2023-11-29 03:00:37,060 INFO L899 garLoopResultBuilder]: For program point L17-2(line 17) no Hoare annotation was computed. [2023-11-29 03:00:37,060 INFO L899 garLoopResultBuilder]: For program point L42(line 42) no Hoare annotation was computed. [2023-11-29 03:00:37,060 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-29 03:00:37,060 INFO L899 garLoopResultBuilder]: For program point L42-1(line 42) no Hoare annotation was computed. [2023-11-29 03:00:37,061 INFO L899 garLoopResultBuilder]: For program point L42-3(lines 37 45) no Hoare annotation was computed. [2023-11-29 03:00:37,061 INFO L899 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2023-11-29 03:00:37,061 INFO L899 garLoopResultBuilder]: For program point L38-2(line 38) no Hoare annotation was computed. [2023-11-29 03:00:37,061 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 42) no Hoare annotation was computed. [2023-11-29 03:00:37,063 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-29 03:00:37,065 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 03:00:37,070 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 03:00:37 BoogieIcfgContainer [2023-11-29 03:00:37,070 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 03:00:37,070 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 03:00:37,071 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 03:00:37,071 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 03:00:37,071 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:59:40" (3/4) ... [2023-11-29 03:00:37,073 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 03:00:37,081 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-11-29 03:00:37,081 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-29 03:00:37,081 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-29 03:00:37,082 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-29 03:00:37,164 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 03:00:37,164 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 03:00:37,165 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 03:00:37,165 INFO L158 Benchmark]: Toolchain (without parser) took 60288.98ms. Allocated memory is still 83.9MB. Free memory was 60.1MB in the beginning and 55.6MB in the end (delta: 4.4MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2023-11-29 03:00:37,166 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 56.6MB. Free memory is still 33.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 03:00:37,166 INFO L158 Benchmark]: CACSL2BoogieTranslator took 280.66ms. Allocated memory is still 83.9MB. Free memory was 59.9MB in the beginning and 46.8MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-29 03:00:37,166 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.57ms. Allocated memory is still 83.9MB. Free memory was 46.6MB in the beginning and 45.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 03:00:37,167 INFO L158 Benchmark]: Boogie Preprocessor took 43.70ms. Allocated memory is still 83.9MB. Free memory was 45.0MB in the beginning and 43.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 03:00:37,167 INFO L158 Benchmark]: RCFGBuilder took 3299.72ms. Allocated memory is still 83.9MB. Free memory was 43.1MB in the beginning and 53.7MB in the end (delta: -10.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 03:00:37,168 INFO L158 Benchmark]: TraceAbstraction took 56525.36ms. Allocated memory is still 83.9MB. Free memory was 53.1MB in the beginning and 60.3MB in the end (delta: -7.2MB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. [2023-11-29 03:00:37,168 INFO L158 Benchmark]: Witness Printer took 94.25ms. Allocated memory is still 83.9MB. Free memory was 60.3MB in the beginning and 55.6MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 03:00:37,170 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 56.6MB. Free memory is still 33.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 280.66ms. Allocated memory is still 83.9MB. Free memory was 59.9MB in the beginning and 46.8MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.57ms. Allocated memory is still 83.9MB. Free memory was 46.6MB in the beginning and 45.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.70ms. Allocated memory is still 83.9MB. Free memory was 45.0MB in the beginning and 43.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 3299.72ms. Allocated memory is still 83.9MB. Free memory was 43.1MB in the beginning and 53.7MB in the end (delta: -10.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * TraceAbstraction took 56525.36ms. Allocated memory is still 83.9MB. Free memory was 53.1MB in the beginning and 60.3MB in the end (delta: -7.2MB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. * Witness Printer took 94.25ms. Allocated memory is still 83.9MB. Free memory was 60.3MB in the beginning and 55.6MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. 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 - PositiveResult [Line: 21]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 32]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 42]: 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, 20 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 56.5s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 34.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 23 SdHoareTripleChecker+Valid, 24.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 36 SdHoareTripleChecker+Invalid, 24.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 87 IncrementalHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 26 mSDtfsCounter, 87 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 17, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 20.8s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 28 ConstructedInterpolants, 3 QuantifiedInterpolants, 153 SizeOfPredicates, 12 NumberOfNonLiveVariables, 91 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-29 03:00:37,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bec0da-70ce-475f-8f08-9287871d8249/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE