./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_a4df3462-51ed-4f53-aa01-ddfc70afc574/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4df3462-51ed-4f53-aa01-ddfc70afc574/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_a4df3462-51ed-4f53-aa01-ddfc70afc574/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4df3462-51ed-4f53-aa01-ddfc70afc574/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/float_int_inv_square.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4df3462-51ed-4f53-aa01-ddfc70afc574/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_a4df3462-51ed-4f53-aa01-ddfc70afc574/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 a3f1488b0e5756e8d9e219e50ec38e84e8e4fac76b2e3a5e1785d4e14d4111d8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:28:01,231 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:28:01,298 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4df3462-51ed-4f53-aa01-ddfc70afc574/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 01:28:01,303 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:28:01,304 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:28:01,331 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:28:01,332 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:28:01,332 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:28:01,333 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:28:01,333 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:28:01,334 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:28:01,335 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:28:01,335 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:28:01,336 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:28:01,337 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:28:01,337 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:28:01,338 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:28:01,338 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:28:01,339 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:28:01,339 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:28:01,340 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:28:01,340 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:28:01,341 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:28:01,341 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:28:01,342 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:28:01,342 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:28:01,343 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:28:01,343 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:28:01,344 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:28:01,344 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:28:01,345 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:28:01,345 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:28:01,345 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:28:01,346 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:28:01,346 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:28:01,347 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:28:01,347 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:28:01,347 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:28:01,348 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:28:01,348 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:28:01,348 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:28:01,348 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:28:01,349 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_a4df3462-51ed-4f53-aa01-ddfc70afc574/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4df3462-51ed-4f53-aa01-ddfc70afc574/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a3f1488b0e5756e8d9e219e50ec38e84e8e4fac76b2e3a5e1785d4e14d4111d8 [2023-11-29 01:28:01,567 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:28:01,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:28:01,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:28:01,591 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:28:01,592 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:28:01,593 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4df3462-51ed-4f53-aa01-ddfc70afc574/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/float-benchs/float_int_inv_square.c [2023-11-29 01:28:04,352 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:28:04,506 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:28:04,506 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4df3462-51ed-4f53-aa01-ddfc70afc574/sv-benchmarks/c/float-benchs/float_int_inv_square.c [2023-11-29 01:28:04,512 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4df3462-51ed-4f53-aa01-ddfc70afc574/bin/uautomizer-verify-BQ2R08f2Ya/data/a3d92376d/f7bb6cd831ff4846961f2a1ae5025762/FLAGc3d69310c [2023-11-29 01:28:04,524 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4df3462-51ed-4f53-aa01-ddfc70afc574/bin/uautomizer-verify-BQ2R08f2Ya/data/a3d92376d/f7bb6cd831ff4846961f2a1ae5025762 [2023-11-29 01:28:04,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:28:04,527 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:28:04,529 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:28:04,529 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:28:04,533 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:28:04,534 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:28:04" (1/1) ... [2023-11-29 01:28:04,535 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@234391a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:28:04, skipping insertion in model container [2023-11-29 01:28:04,535 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:28:04" (1/1) ... [2023-11-29 01:28:04,551 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:28:04,667 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_a4df3462-51ed-4f53-aa01-ddfc70afc574/sv-benchmarks/c/float-benchs/float_int_inv_square.c[488,501] [2023-11-29 01:28:04,676 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:28:04,685 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:28:04,695 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_a4df3462-51ed-4f53-aa01-ddfc70afc574/sv-benchmarks/c/float-benchs/float_int_inv_square.c[488,501] [2023-11-29 01:28:04,697 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:28:04,708 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:28:04,708 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:28:04 WrapperNode [2023-11-29 01:28:04,708 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:28:04,709 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:28:04,709 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:28:04,709 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:28:04,715 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:28:04" (1/1) ... [2023-11-29 01:28:04,721 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:28:04" (1/1) ... [2023-11-29 01:28:04,734 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 31 [2023-11-29 01:28:04,735 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:28:04,735 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:28:04,736 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:28:04,736 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:28:04,746 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:28:04" (1/1) ... [2023-11-29 01:28:04,746 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:28:04" (1/1) ... [2023-11-29 01:28:04,747 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:28:04" (1/1) ... [2023-11-29 01:28:04,758 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 01:28:04,759 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:28:04" (1/1) ... [2023-11-29 01:28:04,759 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:28:04" (1/1) ... [2023-11-29 01:28:04,762 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:28:04" (1/1) ... [2023-11-29 01:28:04,764 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:28:04" (1/1) ... [2023-11-29 01:28:04,765 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:28:04" (1/1) ... [2023-11-29 01:28:04,766 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:28:04" (1/1) ... [2023-11-29 01:28:04,768 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:28:04,769 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:28:04,769 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:28:04,769 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:28:04,770 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:28:04" (1/1) ... [2023-11-29 01:28:04,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:28:04,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4df3462-51ed-4f53-aa01-ddfc70afc574/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:04,799 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4df3462-51ed-4f53-aa01-ddfc70afc574/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:28:04,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4df3462-51ed-4f53-aa01-ddfc70afc574/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:28:04,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:28:04,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:28:04,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:28:04,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:28:04,881 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:28:04,884 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:28:04,962 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:28:04,984 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:28:04,984 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 01:28:04,984 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:28:04 BoogieIcfgContainer [2023-11-29 01:28:04,985 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:28:04,988 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:28:04,988 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:28:04,992 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:28:04,992 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:28:04" (1/3) ... [2023-11-29 01:28:04,993 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@189d4fa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:28:04, skipping insertion in model container [2023-11-29 01:28:04,993 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:28:04" (2/3) ... [2023-11-29 01:28:04,993 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@189d4fa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:28:04, skipping insertion in model container [2023-11-29 01:28:04,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:28:04" (3/3) ... [2023-11-29 01:28:04,995 INFO L112 eAbstractionObserver]: Analyzing ICFG float_int_inv_square.c [2023-11-29 01:28:05,015 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:28:05,016 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 01:28:05,063 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:28:05,069 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;@3b2aee57, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:28:05,069 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 01:28:05,072 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:28:05,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-29 01:28:05,078 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:05,078 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 01:28:05,079 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:28:05,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:05,084 INFO L85 PathProgramCache]: Analyzing trace with hash 50951645, now seen corresponding path program 1 times [2023-11-29 01:28:05,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:05,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688593539] [2023-11-29 01:28:05,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:05,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:05,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:28:05,214 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 01:28:05,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:05,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688593539] [2023-11-29 01:28:05,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688593539] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:28:05,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:28:05,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:28:05,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709818761] [2023-11-29 01:28:05,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:28:05,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 01:28:05,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:05,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 01:28:05,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:28:05,252 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:28:05,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:05,269 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2023-11-29 01:28:05,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 01:28:05,271 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 01:28:05,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:05,280 INFO L225 Difference]: With dead ends: 14 [2023-11-29 01:28:05,280 INFO L226 Difference]: Without dead ends: 6 [2023-11-29 01:28:05,283 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 01:28:05,287 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 [2023-11-29 01:28:05,289 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] [2023-11-29 01:28:05,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2023-11-29 01:28:05,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2023-11-29 01:28:05,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:28:05,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5 transitions. [2023-11-29 01:28:05,317 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 5 transitions. Word has length 5 [2023-11-29 01:28:05,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:05,317 INFO L495 AbstractCegarLoop]: Abstraction has 6 states and 5 transitions. [2023-11-29 01:28:05,317 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 01:28:05,318 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 5 transitions. [2023-11-29 01:28:05,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-29 01:28:05,318 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:05,318 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 01:28:05,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:28:05,319 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:28:05,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:05,319 INFO L85 PathProgramCache]: Analyzing trace with hash 51011227, now seen corresponding path program 1 times [2023-11-29 01:28:05,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:05,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787634708] [2023-11-29 01:28:05,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:05,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:28:05,340 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 01:28:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:28:05,372 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 01:28:05,372 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 01:28:05,374 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-29 01:28:05,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:28:05,380 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-29 01:28:05,383 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 01:28:05,398 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 01:28:05 BoogieIcfgContainer [2023-11-29 01:28:05,398 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 01:28:05,399 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 01:28:05,399 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 01:28:05,399 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 01:28:05,400 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:28:04" (3/4) ... [2023-11-29 01:28:05,401 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-29 01:28:05,402 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 01:28:05,403 INFO L158 Benchmark]: Toolchain (without parser) took 875.87ms. Allocated memory is still 186.6MB. Free memory was 151.8MB in the beginning and 104.7MB in the end (delta: 47.1MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2023-11-29 01:28:05,403 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 111.1MB. Free memory is still 59.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 01:28:05,404 INFO L158 Benchmark]: CACSL2BoogieTranslator took 180.07ms. Allocated memory is still 186.6MB. Free memory was 151.8MB in the beginning and 141.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 01:28:05,405 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.82ms. Allocated memory is still 186.6MB. Free memory was 141.3MB in the beginning and 139.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 01:28:05,405 INFO L158 Benchmark]: Boogie Preprocessor took 32.58ms. Allocated memory is still 186.6MB. Free memory was 139.8MB in the beginning and 138.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 01:28:05,406 INFO L158 Benchmark]: RCFGBuilder took 215.92ms. Allocated memory is still 186.6MB. Free memory was 138.2MB in the beginning and 128.2MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 01:28:05,407 INFO L158 Benchmark]: TraceAbstraction took 410.80ms. Allocated memory is still 186.6MB. Free memory was 127.8MB in the beginning and 105.1MB in the end (delta: 22.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-29 01:28:05,407 INFO L158 Benchmark]: Witness Printer took 3.41ms. Allocated memory is still 186.6MB. Free memory was 105.1MB in the beginning and 104.7MB in the end (delta: 396.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 01:28:05,410 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 111.1MB. Free memory is still 59.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 180.07ms. Allocated memory is still 186.6MB. Free memory was 151.8MB in the beginning and 141.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.82ms. Allocated memory is still 186.6MB. Free memory was 141.3MB in the beginning and 139.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.58ms. Allocated memory is still 186.6MB. Free memory was 139.8MB in the beginning and 138.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 215.92ms. Allocated memory is still 186.6MB. Free memory was 138.2MB in the beginning and 128.2MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 410.80ms. Allocated memory is still 186.6MB. Free memory was 127.8MB in the beginning and 105.1MB in the end (delta: 22.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 3.41ms. Allocated memory is still 186.6MB. Free memory was 105.1MB in the beginning and 104.7MB in the end (delta: 396.2kB). 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) 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: 0.3s, 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, 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, 2 GetRequests, 2 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, 0.0s 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 01:28:05,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4df3462-51ed-4f53-aa01-ddfc70afc574/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4df3462-51ed-4f53-aa01-ddfc70afc574/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4df3462-51ed-4f53-aa01-ddfc70afc574/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_a4df3462-51ed-4f53-aa01-ddfc70afc574/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4df3462-51ed-4f53-aa01-ddfc70afc574/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/float_int_inv_square.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4df3462-51ed-4f53-aa01-ddfc70afc574/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_a4df3462-51ed-4f53-aa01-ddfc70afc574/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 a3f1488b0e5756e8d9e219e50ec38e84e8e4fac76b2e3a5e1785d4e14d4111d8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:28:07,336 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:28:07,415 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4df3462-51ed-4f53-aa01-ddfc70afc574/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-29 01:28:07,422 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:28:07,422 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:28:07,452 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:28:07,452 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:28:07,453 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:28:07,454 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:28:07,454 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:28:07,455 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:28:07,455 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:28:07,456 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:28:07,457 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:28:07,457 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:28:07,458 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:28:07,458 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:28:07,459 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:28:07,459 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:28:07,460 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:28:07,460 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:28:07,461 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:28:07,461 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:28:07,462 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 01:28:07,462 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 01:28:07,462 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 01:28:07,463 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:28:07,463 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:28:07,463 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:28:07,464 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:28:07,464 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:28:07,465 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:28:07,465 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:28:07,465 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:28:07,466 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:28:07,466 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:28:07,466 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:28:07,466 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 01:28:07,467 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 01:28:07,467 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:28:07,467 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:28:07,467 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:28:07,468 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:28:07,468 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:28:07,468 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 01:28:07,468 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_a4df3462-51ed-4f53-aa01-ddfc70afc574/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4df3462-51ed-4f53-aa01-ddfc70afc574/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a3f1488b0e5756e8d9e219e50ec38e84e8e4fac76b2e3a5e1785d4e14d4111d8 [2023-11-29 01:28:07,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:28:07,801 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:28:07,804 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:28:07,805 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:28:07,806 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:28:07,807 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4df3462-51ed-4f53-aa01-ddfc70afc574/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/float-benchs/float_int_inv_square.c [2023-11-29 01:28:10,571 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:28:10,758 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:28:10,759 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4df3462-51ed-4f53-aa01-ddfc70afc574/sv-benchmarks/c/float-benchs/float_int_inv_square.c [2023-11-29 01:28:10,765 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4df3462-51ed-4f53-aa01-ddfc70afc574/bin/uautomizer-verify-BQ2R08f2Ya/data/adf74ac18/329953f08895466faeb2912b6d0b580b/FLAGf6765b8bc [2023-11-29 01:28:10,778 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4df3462-51ed-4f53-aa01-ddfc70afc574/bin/uautomizer-verify-BQ2R08f2Ya/data/adf74ac18/329953f08895466faeb2912b6d0b580b [2023-11-29 01:28:10,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:28:10,782 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:28:10,783 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:28:10,783 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:28:10,787 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:28:10,788 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:28:10" (1/1) ... [2023-11-29 01:28:10,789 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d2fb2b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:28:10, skipping insertion in model container [2023-11-29 01:28:10,789 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:28:10" (1/1) ... [2023-11-29 01:28:10,808 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:28:10,968 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_a4df3462-51ed-4f53-aa01-ddfc70afc574/sv-benchmarks/c/float-benchs/float_int_inv_square.c[488,501] [2023-11-29 01:28:10,980 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:28:10,995 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:28:11,008 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_a4df3462-51ed-4f53-aa01-ddfc70afc574/sv-benchmarks/c/float-benchs/float_int_inv_square.c[488,501] [2023-11-29 01:28:11,012 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:28:11,029 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:28:11,030 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:28:11 WrapperNode [2023-11-29 01:28:11,030 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:28:11,031 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:28:11,032 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:28:11,032 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:28:11,039 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:28:11" (1/1) ... [2023-11-29 01:28:11,049 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:28:11" (1/1) ... [2023-11-29 01:28:11,066 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 31 [2023-11-29 01:28:11,067 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:28:11,067 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:28:11,068 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:28:11,068 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:28:11,078 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:28:11" (1/1) ... [2023-11-29 01:28:11,079 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:28:11" (1/1) ... [2023-11-29 01:28:11,081 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:28:11" (1/1) ... [2023-11-29 01:28:11,093 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 01:28:11,093 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:28:11" (1/1) ... [2023-11-29 01:28:11,093 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:28:11" (1/1) ... [2023-11-29 01:28:11,100 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:28:11" (1/1) ... [2023-11-29 01:28:11,102 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:28:11" (1/1) ... [2023-11-29 01:28:11,104 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:28:11" (1/1) ... [2023-11-29 01:28:11,105 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:28:11" (1/1) ... [2023-11-29 01:28:11,108 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:28:11,109 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:28:11,110 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:28:11,110 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:28:11,110 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:28:11" (1/1) ... [2023-11-29 01:28:11,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:28:11,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4df3462-51ed-4f53-aa01-ddfc70afc574/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:11,146 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4df3462-51ed-4f53-aa01-ddfc70afc574/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:28:11,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4df3462-51ed-4f53-aa01-ddfc70afc574/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:28:11,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:28:11,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 01:28:11,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:28:11,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:28:11,268 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:28:11,270 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:28:11,860 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:28:11,890 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:28:11,890 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 01:28:11,891 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:28:11 BoogieIcfgContainer [2023-11-29 01:28:11,891 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:28:11,893 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:28:11,894 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:28:11,897 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:28:11,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:28:10" (1/3) ... [2023-11-29 01:28:11,898 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2087d8de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:28:11, skipping insertion in model container [2023-11-29 01:28:11,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:28:11" (2/3) ... [2023-11-29 01:28:11,899 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2087d8de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:28:11, skipping insertion in model container [2023-11-29 01:28:11,899 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:28:11" (3/3) ... [2023-11-29 01:28:11,900 INFO L112 eAbstractionObserver]: Analyzing ICFG float_int_inv_square.c [2023-11-29 01:28:11,919 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:28:11,919 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 01:28:11,968 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:28:11,974 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;@5a2e7735, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:28:11,974 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 01:28:11,978 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:28:11,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-29 01:28:11,984 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:11,984 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 01:28:11,985 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:28:11,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:11,991 INFO L85 PathProgramCache]: Analyzing trace with hash 50951645, now seen corresponding path program 1 times [2023-11-29 01:28:12,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:28:12,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1591110273] [2023-11-29 01:28:12,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:12,004 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 01:28:12,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4df3462-51ed-4f53-aa01-ddfc70afc574/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:28:12,036 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4df3462-51ed-4f53-aa01-ddfc70afc574/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 01:28:12,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4df3462-51ed-4f53-aa01-ddfc70afc574/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 01:28:12,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:28:12,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 01:28:12,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:12,141 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 01:28:12,141 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:28:12,142 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:28:12,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1591110273] [2023-11-29 01:28:12,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1591110273] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:28:12,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:28:12,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:28:12,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047447034] [2023-11-29 01:28:12,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:28:12,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 01:28:12,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:28:12,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 01:28:12,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:28:12,173 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:28:12,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:12,192 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2023-11-29 01:28:12,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 01:28:12,194 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 01:28:12,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:12,200 INFO L225 Difference]: With dead ends: 14 [2023-11-29 01:28:12,200 INFO L226 Difference]: Without dead ends: 6 [2023-11-29 01:28:12,202 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 01:28:12,205 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 [2023-11-29 01:28:12,206 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] [2023-11-29 01:28:12,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2023-11-29 01:28:12,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2023-11-29 01:28:12,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:28:12,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5 transitions. [2023-11-29 01:28:12,227 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 5 transitions. Word has length 5 [2023-11-29 01:28:12,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:12,227 INFO L495 AbstractCegarLoop]: Abstraction has 6 states and 5 transitions. [2023-11-29 01:28:12,227 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 01:28:12,228 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 5 transitions. [2023-11-29 01:28:12,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-29 01:28:12,228 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:12,228 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 01:28:12,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4df3462-51ed-4f53-aa01-ddfc70afc574/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 01:28:12,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4df3462-51ed-4f53-aa01-ddfc70afc574/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 01:28:12,429 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:28:12,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:12,430 INFO L85 PathProgramCache]: Analyzing trace with hash 51011227, now seen corresponding path program 1 times [2023-11-29 01:28:12,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:28:12,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1085115282] [2023-11-29 01:28:12,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:12,431 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 01:28:12,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4df3462-51ed-4f53-aa01-ddfc70afc574/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:28:12,433 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4df3462-51ed-4f53-aa01-ddfc70afc574/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 01:28:12,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4df3462-51ed-4f53-aa01-ddfc70afc574/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 01:28:12,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:28:12,508 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 01:28:12,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:28:12,576 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-29 01:28:12,576 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 01:28:12,578 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-29 01:28:12,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4df3462-51ed-4f53-aa01-ddfc70afc574/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)] Forceful destruction successful, exit code 0 [2023-11-29 01:28:12,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4df3462-51ed-4f53-aa01-ddfc70afc574/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 01:28:12,783 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-29 01:28:12,786 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 01:28:12,799 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 01:28:12 BoogieIcfgContainer [2023-11-29 01:28:12,799 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 01:28:12,800 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 01:28:12,800 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 01:28:12,800 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 01:28:12,801 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:28:11" (3/4) ... [2023-11-29 01:28:12,802 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-29 01:28:12,833 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4df3462-51ed-4f53-aa01-ddfc70afc574/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 01:28:12,833 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 01:28:12,834 INFO L158 Benchmark]: Toolchain (without parser) took 2051.89ms. Allocated memory is still 88.1MB. Free memory was 65.2MB in the beginning and 65.3MB in the end (delta: -126.8kB). Peak memory consumption was 30.0MB. Max. memory is 16.1GB. [2023-11-29 01:28:12,834 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 58.7MB. Free memory is still 35.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 01:28:12,835 INFO L158 Benchmark]: CACSL2BoogieTranslator took 247.55ms. Allocated memory is still 88.1MB. Free memory was 65.0MB in the beginning and 54.0MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 01:28:12,835 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.52ms. Allocated memory is still 88.1MB. Free memory was 54.0MB in the beginning and 52.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 01:28:12,835 INFO L158 Benchmark]: Boogie Preprocessor took 41.20ms. Allocated memory is still 88.1MB. Free memory was 52.6MB in the beginning and 50.7MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 01:28:12,836 INFO L158 Benchmark]: RCFGBuilder took 781.72ms. Allocated memory is still 88.1MB. Free memory was 50.7MB in the beginning and 61.2MB in the end (delta: -10.4MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2023-11-29 01:28:12,836 INFO L158 Benchmark]: TraceAbstraction took 906.10ms. Allocated memory is still 88.1MB. Free memory was 60.4MB in the beginning and 38.9MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-29 01:28:12,837 INFO L158 Benchmark]: Witness Printer took 32.94ms. Allocated memory is still 88.1MB. Free memory was 38.9MB in the beginning and 65.3MB in the end (delta: -26.4MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2023-11-29 01:28:12,839 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 58.7MB. Free memory is still 35.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 247.55ms. Allocated memory is still 88.1MB. Free memory was 65.0MB in the beginning and 54.0MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.52ms. Allocated memory is still 88.1MB. Free memory was 54.0MB in the beginning and 52.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.20ms. Allocated memory is still 88.1MB. Free memory was 52.6MB in the beginning and 50.7MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 781.72ms. Allocated memory is still 88.1MB. Free memory was 50.7MB in the beginning and 61.2MB in the end (delta: -10.4MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. * TraceAbstraction took 906.10ms. Allocated memory is still 88.1MB. Free memory was 60.4MB in the beginning and 38.9MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 32.94ms. Allocated memory is still 88.1MB. Free memory was 38.9MB in the beginning and 65.3MB in the end (delta: -26.4MB). Peak memory consumption was 5.1MB. 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: 0.8s, 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! [2023-11-29 01:28:12,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4df3462-51ed-4f53-aa01-ddfc70afc574/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 Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE