./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/float_int_inv_square.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/float_int_inv_square.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a3f1488b0e5756e8d9e219e50ec38e84e8e4fac76b2e3a5e1785d4e14d4111d8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:51:29,115 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:51:29,178 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 16:51:29,183 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:51:29,184 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:51:29,207 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:51:29,207 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:51:29,208 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:51:29,208 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:51:29,209 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:51:29,209 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:51:29,210 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:51:29,210 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:51:29,211 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 16:51:29,211 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:51:29,212 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:51:29,212 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 16:51:29,213 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 16:51:29,213 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:51:29,214 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 16:51:29,214 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 16:51:29,215 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 16:51:29,216 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:51:29,216 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:51:29,217 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 16:51:29,217 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 16:51:29,217 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 16:51:29,218 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:51:29,218 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:51:29,219 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:51:29,219 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:51:29,219 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 16:51:29,220 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:51:29,220 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:51:29,220 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:51:29,221 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:51:29,221 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:51:29,221 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:51:29,221 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:51:29,222 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:51:29,222 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 16:51:29,222 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 16:51:29,222 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 16:51:29,223 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:51:29,223 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 16:51:29,223 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:51:29,223 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:51:29,223 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a3f1488b0e5756e8d9e219e50ec38e84e8e4fac76b2e3a5e1785d4e14d4111d8 [2023-12-02 16:51:29,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:51:29,449 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:51:29,451 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:51:29,453 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:51:29,453 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:51:29,454 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/float-benchs/float_int_inv_square.c [2023-12-02 16:51:32,183 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:51:32,371 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:51:32,372 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/sv-benchmarks/c/float-benchs/float_int_inv_square.c [2023-12-02 16:51:32,379 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/bin/utaipan-verify-nQ1chXbOIh/data/7ddcac25e/093b008dfdad42909da6ee210a46e891/FLAGf27ce6f6a [2023-12-02 16:51:32,393 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/bin/utaipan-verify-nQ1chXbOIh/data/7ddcac25e/093b008dfdad42909da6ee210a46e891 [2023-12-02 16:51:32,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:51:32,397 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:51:32,398 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:51:32,398 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:51:32,403 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:51:32,404 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:51:32" (1/1) ... [2023-12-02 16:51:32,405 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@125508be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:51:32, skipping insertion in model container [2023-12-02 16:51:32,405 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:51:32" (1/1) ... [2023-12-02 16:51:32,426 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:51:32,553 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_84e1a85c-7703-4a6f-b421-cd6addc22f5f/sv-benchmarks/c/float-benchs/float_int_inv_square.c[488,501] [2023-12-02 16:51:32,561 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:51:32,570 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:51:32,579 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_84e1a85c-7703-4a6f-b421-cd6addc22f5f/sv-benchmarks/c/float-benchs/float_int_inv_square.c[488,501] [2023-12-02 16:51:32,582 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:51:32,592 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:51:32,593 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:51:32 WrapperNode [2023-12-02 16:51:32,593 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:51:32,594 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:51:32,594 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:51:32,594 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:51:32,599 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:51:32" (1/1) ... [2023-12-02 16:51:32,605 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:51:32" (1/1) ... [2023-12-02 16:51:32,618 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 31 [2023-12-02 16:51:32,618 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:51:32,619 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:51:32,619 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:51:32,619 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:51:32,625 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:51:32" (1/1) ... [2023-12-02 16:51:32,625 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:51:32" (1/1) ... [2023-12-02 16:51:32,626 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:51:32" (1/1) ... [2023-12-02 16:51:32,626 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:51:32" (1/1) ... [2023-12-02 16:51:32,629 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:51:32" (1/1) ... [2023-12-02 16:51:32,631 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:51:32" (1/1) ... [2023-12-02 16:51:32,632 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:51:32" (1/1) ... [2023-12-02 16:51:32,633 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:51:32" (1/1) ... [2023-12-02 16:51:32,634 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:51:32,635 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:51:32,635 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:51:32,635 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:51:32,636 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:51:32" (1/1) ... [2023-12-02 16:51:32,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:51:32,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:51:32,663 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:51:32,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:51:32,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:51:32,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 16:51:32,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:51:32,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:51:32,765 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:51:32,766 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:51:32,851 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:51:32,898 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:51:32,898 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 16:51:32,900 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:51:32 BoogieIcfgContainer [2023-12-02 16:51:32,900 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:51:32,903 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:51:32,903 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:51:32,906 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:51:32,907 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:51:32" (1/3) ... [2023-12-02 16:51:32,907 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@132eac61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:51:32, skipping insertion in model container [2023-12-02 16:51:32,908 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:51:32" (2/3) ... [2023-12-02 16:51:32,908 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@132eac61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:51:32, skipping insertion in model container [2023-12-02 16:51:32,908 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:51:32" (3/3) ... [2023-12-02 16:51:32,909 INFO L112 eAbstractionObserver]: Analyzing ICFG float_int_inv_square.c [2023-12-02 16:51:32,928 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:51:32,928 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 16:51:32,974 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:51:32,982 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@fc3e00d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:51:32,982 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 16:51:32,986 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:32,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 16:51:32,992 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:51:32,992 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 16:51:32,993 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:51:32,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:51:32,998 INFO L85 PathProgramCache]: Analyzing trace with hash 58046, now seen corresponding path program 1 times [2023-12-02 16:51:33,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:51:33,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088505138] [2023-12-02 16:51:33,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:33,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:51:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 16:51:33,104 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 16:51:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 16:51:33,133 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 16:51:33,135 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 16:51:33,136 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 16:51:33,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 16:51:33,142 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 16:51:33,146 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 16:51:33,162 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 04:51:33 BoogieIcfgContainer [2023-12-02 16:51:33,162 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 16:51:33,163 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 16:51:33,163 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 16:51:33,163 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 16:51:33,163 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:51:32" (3/4) ... [2023-12-02 16:51:33,166 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 16:51:33,167 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 16:51:33,168 INFO L158 Benchmark]: Toolchain (without parser) took 770.93ms. Allocated memory is still 140.5MB. Free memory was 109.0MB in the beginning and 71.0MB in the end (delta: 38.0MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2023-12-02 16:51:33,168 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 102.8MB. Free memory is still 54.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 16:51:33,169 INFO L158 Benchmark]: CACSL2BoogieTranslator took 195.08ms. Allocated memory is still 140.5MB. Free memory was 108.5MB in the beginning and 98.3MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 16:51:33,170 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.36ms. Allocated memory is still 140.5MB. Free memory was 98.3MB in the beginning and 97.3MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 16:51:33,170 INFO L158 Benchmark]: Boogie Preprocessor took 15.95ms. Allocated memory is still 140.5MB. Free memory was 96.7MB in the beginning and 96.2MB in the end (delta: 534.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 16:51:33,171 INFO L158 Benchmark]: RCFGBuilder took 264.79ms. Allocated memory is still 140.5MB. Free memory was 95.7MB in the beginning and 85.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 16:51:33,171 INFO L158 Benchmark]: TraceAbstraction took 259.06ms. Allocated memory is still 140.5MB. Free memory was 84.2MB in the beginning and 71.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 16:51:33,171 INFO L158 Benchmark]: Witness Printer took 4.19ms. Allocated memory is still 140.5MB. Free memory is still 71.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 16:51:33,174 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 102.8MB. Free memory is still 54.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 195.08ms. Allocated memory is still 140.5MB. Free memory was 108.5MB in the beginning and 98.3MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.36ms. Allocated memory is still 140.5MB. Free memory was 98.3MB in the beginning and 97.3MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.95ms. Allocated memory is still 140.5MB. Free memory was 96.7MB in the beginning and 96.2MB in the end (delta: 534.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 264.79ms. Allocated memory is still 140.5MB. Free memory was 95.7MB in the beginning and 85.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 259.06ms. Allocated memory is still 140.5MB. Free memory was 84.2MB in the beginning and 71.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 4.19ms. Allocated memory is still 140.5MB. Free memory is still 71.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 11]: 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 22, overapproximation of someBinaryArithmeticFLOAToperation at line 21. Possible FailurePath: [L15] int x; [L16] float y, z; [L18] x = __VERIFIER_nondet_int() [L19] CALL assume_abort_if_not(x >= -10 && x <= 10) [L9] COND FALSE !(!cond) [L19] RET assume_abort_if_not(x >= -10 && x <= 10) [L21] y = x*x - 4.f [L22] CALL __VERIFIER_assert(y != 0.f) [L11] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L11] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-12-02 16:51:33,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/float_int_inv_square.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a3f1488b0e5756e8d9e219e50ec38e84e8e4fac76b2e3a5e1785d4e14d4111d8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:51:35,077 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:51:35,157 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 16:51:35,163 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:51:35,163 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:51:35,189 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:51:35,190 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:51:35,190 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:51:35,191 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:51:35,191 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:51:35,192 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:51:35,193 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:51:35,193 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:51:35,194 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:51:35,194 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:51:35,195 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:51:35,195 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:51:35,196 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:51:35,196 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 16:51:35,197 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 16:51:35,197 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:51:35,198 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:51:35,198 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:51:35,199 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:51:35,199 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 16:51:35,200 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 16:51:35,200 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 16:51:35,201 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 16:51:35,201 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:51:35,202 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:51:35,202 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:51:35,203 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 16:51:35,203 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:51:35,203 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:51:35,204 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:51:35,204 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:51:35,204 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:51:35,204 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 16:51:35,205 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 16:51:35,205 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 16:51:35,205 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:51:35,205 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 16:51:35,206 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:51:35,206 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:51:35,206 INFO L153 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a3f1488b0e5756e8d9e219e50ec38e84e8e4fac76b2e3a5e1785d4e14d4111d8 [2023-12-02 16:51:35,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:51:35,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:51:35,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:51:35,497 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:51:35,498 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:51:35,499 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/float-benchs/float_int_inv_square.c [2023-12-02 16:51:38,287 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:51:38,472 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:51:38,473 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/sv-benchmarks/c/float-benchs/float_int_inv_square.c [2023-12-02 16:51:38,479 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/bin/utaipan-verify-nQ1chXbOIh/data/ab5b01bb5/e9be630a74054e448999d203e88280c7/FLAGbc6b6b024 [2023-12-02 16:51:38,492 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/bin/utaipan-verify-nQ1chXbOIh/data/ab5b01bb5/e9be630a74054e448999d203e88280c7 [2023-12-02 16:51:38,494 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:51:38,495 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:51:38,497 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:51:38,497 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:51:38,501 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:51:38,502 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:51:38" (1/1) ... [2023-12-02 16:51:38,503 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70b12098 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:51:38, skipping insertion in model container [2023-12-02 16:51:38,503 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:51:38" (1/1) ... [2023-12-02 16:51:38,519 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:51:38,641 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_84e1a85c-7703-4a6f-b421-cd6addc22f5f/sv-benchmarks/c/float-benchs/float_int_inv_square.c[488,501] [2023-12-02 16:51:38,651 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:51:38,664 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:51:38,675 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_84e1a85c-7703-4a6f-b421-cd6addc22f5f/sv-benchmarks/c/float-benchs/float_int_inv_square.c[488,501] [2023-12-02 16:51:38,678 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:51:38,692 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:51:38,692 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:51:38 WrapperNode [2023-12-02 16:51:38,693 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:51:38,694 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:51:38,694 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:51:38,694 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:51:38,699 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:51:38" (1/1) ... [2023-12-02 16:51:38,708 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:51:38" (1/1) ... [2023-12-02 16:51:38,721 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 31 [2023-12-02 16:51:38,722 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:51:38,722 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:51:38,723 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:51:38,723 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:51:38,729 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:51:38" (1/1) ... [2023-12-02 16:51:38,730 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:51:38" (1/1) ... [2023-12-02 16:51:38,732 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:51:38" (1/1) ... [2023-12-02 16:51:38,733 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:51:38" (1/1) ... [2023-12-02 16:51:38,740 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:51:38" (1/1) ... [2023-12-02 16:51:38,742 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:51:38" (1/1) ... [2023-12-02 16:51:38,745 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:51:38" (1/1) ... [2023-12-02 16:51:38,746 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:51:38" (1/1) ... [2023-12-02 16:51:38,749 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:51:38,750 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:51:38,750 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:51:38,750 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:51:38,751 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:51:38" (1/1) ... [2023-12-02 16:51:38,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:51:38,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:51:38,778 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:51:38,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:51:38,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:51:38,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 16:51:38,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:51:38,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:51:38,881 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:51:38,883 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:51:40,431 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:51:40,455 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:51:40,456 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 16:51:40,456 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:51:40 BoogieIcfgContainer [2023-12-02 16:51:40,457 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:51:40,460 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:51:40,460 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:51:40,464 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:51:40,464 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:51:38" (1/3) ... [2023-12-02 16:51:40,465 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50244a38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:51:40, skipping insertion in model container [2023-12-02 16:51:40,465 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:51:38" (2/3) ... [2023-12-02 16:51:40,465 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50244a38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:51:40, skipping insertion in model container [2023-12-02 16:51:40,466 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:51:40" (3/3) ... [2023-12-02 16:51:40,467 INFO L112 eAbstractionObserver]: Analyzing ICFG float_int_inv_square.c [2023-12-02 16:51:40,486 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:51:40,487 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 16:51:40,532 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:51:40,538 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3da8f791, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:51:40,539 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 16:51:40,542 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:40,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 16:51:40,547 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:51:40,548 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 16:51:40,549 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:51:40,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:51:40,553 INFO L85 PathProgramCache]: Analyzing trace with hash 50951645, now seen corresponding path program 1 times [2023-12-02 16:51:40,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:51:40,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1700452547] [2023-12-02 16:51:40,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:40,564 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 [2023-12-02 16:51:40,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:51:40,565 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 16:51:40,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 16:51:40,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:40,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 16:51:40,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:51:40,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:51:40,724 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:51:40,724 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:51:40,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1700452547] [2023-12-02 16:51:40,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1700452547] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:51:40,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:51:40,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:51:40,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410713396] [2023-12-02 16:51:40,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:51:40,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 16:51:40,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:51:40,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 16:51:40,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 16:51:40,762 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:40,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:51:40,783 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2023-12-02 16:51:40,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 16:51:40,786 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 [2023-12-02 16:51:40,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:51:40,793 INFO L225 Difference]: With dead ends: 14 [2023-12-02 16:51:40,793 INFO L226 Difference]: Without dead ends: 6 [2023-12-02 16:51:40,796 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 [2023-12-02 16:51:40,800 INFO L413 NwaCegarLoop]: 5 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, 5 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 [2023-12-02 16:51:40,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:51:40,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2023-12-02 16:51:40,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2023-12-02 16:51:40,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:40,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5 transitions. [2023-12-02 16:51:40,828 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 5 transitions. Word has length 5 [2023-12-02 16:51:40,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:51:40,829 INFO L495 AbstractCegarLoop]: Abstraction has 6 states and 5 transitions. [2023-12-02 16:51:40,829 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) [2023-12-02 16:51:40,829 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 5 transitions. [2023-12-02 16:51:40,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 16:51:40,830 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:51:40,830 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 16:51:40,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 16:51:41,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 16:51:41,031 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:51:41,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:51:41,032 INFO L85 PathProgramCache]: Analyzing trace with hash 51011227, now seen corresponding path program 1 times [2023-12-02 16:51:41,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:51:41,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1544814159] [2023-12-02 16:51:41,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:41,033 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 [2023-12-02 16:51:41,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:51:41,034 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 16:51:41,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 16:51:41,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 16:51:41,125 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 16:51:41,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 16:51:41,194 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-12-02 16:51:41,194 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 16:51:41,196 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 16:51:41,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 16:51:41,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 16:51:41,401 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-12-02 16:51:41,405 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 16:51:41,421 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 04:51:41 BoogieIcfgContainer [2023-12-02 16:51:41,421 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 16:51:41,422 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 16:51:41,422 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 16:51:41,422 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 16:51:41,423 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:51:40" (3/4) ... [2023-12-02 16:51:41,424 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-12-02 16:51:41,457 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 16:51:41,457 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 16:51:41,458 INFO L158 Benchmark]: Toolchain (without parser) took 2962.65ms. Allocated memory is still 117.4MB. Free memory was 94.0MB in the beginning and 81.7MB in the end (delta: 12.3MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. [2023-12-02 16:51:41,459 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 62.9MB. Free memory was 39.0MB in the beginning and 39.0MB in the end (delta: 41.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 16:51:41,459 INFO L158 Benchmark]: CACSL2BoogieTranslator took 196.02ms. Allocated memory is still 117.4MB. Free memory was 93.7MB in the beginning and 82.9MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 16:51:41,460 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.38ms. Allocated memory is still 117.4MB. Free memory was 82.9MB in the beginning and 81.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 16:51:41,460 INFO L158 Benchmark]: Boogie Preprocessor took 26.80ms. Allocated memory is still 117.4MB. Free memory was 81.5MB in the beginning and 80.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 16:51:41,461 INFO L158 Benchmark]: RCFGBuilder took 1706.67ms. Allocated memory is still 117.4MB. Free memory was 80.1MB in the beginning and 69.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 16:51:41,461 INFO L158 Benchmark]: TraceAbstraction took 961.46ms. Allocated memory is still 117.4MB. Free memory was 68.9MB in the beginning and 83.8MB in the end (delta: -15.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 16:51:41,461 INFO L158 Benchmark]: Witness Printer took 35.56ms. Allocated memory is still 117.4MB. Free memory was 83.8MB in the beginning and 81.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 16:51:41,464 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 62.9MB. Free memory was 39.0MB in the beginning and 39.0MB in the end (delta: 41.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 196.02ms. Allocated memory is still 117.4MB. Free memory was 93.7MB in the beginning and 82.9MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.38ms. Allocated memory is still 117.4MB. Free memory was 82.9MB in the beginning and 81.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.80ms. Allocated memory is still 117.4MB. Free memory was 81.5MB in the beginning and 80.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1706.67ms. Allocated memory is still 117.4MB. Free memory was 80.1MB in the beginning and 69.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 961.46ms. Allocated memory is still 117.4MB. Free memory was 68.9MB in the beginning and 83.8MB in the end (delta: -15.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 35.56ms. Allocated memory is still 117.4MB. Free memory was 83.8MB in the beginning and 81.7MB in the end (delta: 2.1MB). 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 - CounterExampleResult [Line: 11]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L15] int x; [L16] float y, z; [L18] x = __VERIFIER_nondet_int() [L19] CALL assume_abort_if_not(x >= -10 && x <= 10) [L9] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L19] RET assume_abort_if_not(x >= -10 && x <= 10) [L21] y = x*x - 4.f [L22] CALL __VERIFIER_assert(y != 0.f) [L11] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L11] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, 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, 5 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, 5 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 4 SizeOfPredicates, 0 NumberOfNonLiveVariables, 21 ConjunctsInSsa, 1 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 proved your program to be incorrect! [2023-12-02 16:51:41,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e1a85c-7703-4a6f-b421-cd6addc22f5f/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE