./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/zonotope_loose.c.v+cfa-reducer.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_ed4f9767-db03-4791-9475-0caec3d5c831/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/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_ed4f9767-db03-4791-9475-0caec3d5c831/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/zonotope_loose.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/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_ed4f9767-db03-4791-9475-0caec3d5c831/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 9f4aaad5467edb8ebb713201c5ef1a2ab973a56e3a4674058c8240617473ff22 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:44:59,407 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:44:59,469 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 15:44:59,475 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:44:59,475 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:44:59,497 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:44:59,497 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:44:59,498 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:44:59,498 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:44:59,499 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:44:59,499 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:44:59,500 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:44:59,501 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:44:59,501 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:44:59,502 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:44:59,502 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:44:59,503 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:44:59,503 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:44:59,504 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:44:59,504 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:44:59,505 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:44:59,508 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:44:59,509 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:44:59,509 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:44:59,510 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:44:59,510 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:44:59,510 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:44:59,510 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:44:59,511 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:44:59,511 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:44:59,512 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:44:59,512 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:44:59,512 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:44:59,513 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:44:59,513 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:44:59,513 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:44:59,513 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:44:59,513 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:44:59,514 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:44:59,514 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:44:59,514 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:44:59,515 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:44:59,515 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:44:59,515 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:44:59,515 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:44:59,515 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:44:59,515 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:44:59,516 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_ed4f9767-db03-4791-9475-0caec3d5c831/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f4aaad5467edb8ebb713201c5ef1a2ab973a56e3a4674058c8240617473ff22 [2023-12-02 15:44:59,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:44:59,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:44:59,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:44:59,741 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:44:59,741 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:44:59,742 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/float-benchs/zonotope_loose.c.v+cfa-reducer.c [2023-12-02 15:45:02,509 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:45:02,659 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:45:02,659 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/sv-benchmarks/c/float-benchs/zonotope_loose.c.v+cfa-reducer.c [2023-12-02 15:45:02,666 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/bin/utaipan-verify-nQ1chXbOIh/data/e621e6f5f/1e8ce6c9bc5840e295ae75a668ccca9f/FLAGe2f2add93 [2023-12-02 15:45:02,678 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/bin/utaipan-verify-nQ1chXbOIh/data/e621e6f5f/1e8ce6c9bc5840e295ae75a668ccca9f [2023-12-02 15:45:02,681 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:45:02,682 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:45:02,684 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:45:02,684 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:45:02,688 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:45:02,689 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:45:02" (1/1) ... [2023-12-02 15:45:02,690 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@455d33d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:02, skipping insertion in model container [2023-12-02 15:45:02,690 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:45:02" (1/1) ... [2023-12-02 15:45:02,709 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:45:02,835 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_ed4f9767-db03-4791-9475-0caec3d5c831/sv-benchmarks/c/float-benchs/zonotope_loose.c.v+cfa-reducer.c[1094,1107] [2023-12-02 15:45:02,841 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:45:02,850 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:45:02,863 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_ed4f9767-db03-4791-9475-0caec3d5c831/sv-benchmarks/c/float-benchs/zonotope_loose.c.v+cfa-reducer.c[1094,1107] [2023-12-02 15:45:02,865 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:45:02,877 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:45:02,877 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:02 WrapperNode [2023-12-02 15:45:02,877 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:45:02,878 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:45:02,878 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:45:02,879 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:45:02,884 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:02" (1/1) ... [2023-12-02 15:45:02,890 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:02" (1/1) ... [2023-12-02 15:45:02,903 INFO L138 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 55 [2023-12-02 15:45:02,904 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:45:02,904 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:45:02,904 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:45:02,905 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:45:02,911 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:02" (1/1) ... [2023-12-02 15:45:02,911 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:02" (1/1) ... [2023-12-02 15:45:02,912 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:02" (1/1) ... [2023-12-02 15:45:02,912 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:02" (1/1) ... [2023-12-02 15:45:02,916 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:02" (1/1) ... [2023-12-02 15:45:02,918 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:02" (1/1) ... [2023-12-02 15:45:02,919 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:02" (1/1) ... [2023-12-02 15:45:02,920 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:02" (1/1) ... [2023-12-02 15:45:02,921 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:45:02,922 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:45:02,923 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:45:02,923 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:45:02,924 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:02" (1/1) ... [2023-12-02 15:45:02,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:45:02,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:45:02,950 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:45:02,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:45:02,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:45:02,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 15:45:02,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:45:02,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:45:03,035 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:45:03,037 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:45:03,116 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:45:03,141 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:45:03,141 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 15:45:03,142 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:45:03 BoogieIcfgContainer [2023-12-02 15:45:03,142 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:45:03,145 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:45:03,145 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:45:03,148 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:45:03,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:45:02" (1/3) ... [2023-12-02 15:45:03,149 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@566595bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:45:03, skipping insertion in model container [2023-12-02 15:45:03,149 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:02" (2/3) ... [2023-12-02 15:45:03,150 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@566595bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:45:03, skipping insertion in model container [2023-12-02 15:45:03,150 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:45:03" (3/3) ... [2023-12-02 15:45:03,151 INFO L112 eAbstractionObserver]: Analyzing ICFG zonotope_loose.c.v+cfa-reducer.c [2023-12-02 15:45:03,165 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:45:03,165 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 15:45:03,203 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:45:03,209 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;@5e2e737b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:45:03,209 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 15:45:03,212 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 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 15:45:03,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-02 15:45:03,217 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:45:03,218 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:45:03,218 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:45:03,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:45:03,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1602314196, now seen corresponding path program 1 times [2023-12-02 15:45:03,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:45:03,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329654665] [2023-12-02 15:45:03,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:45:03,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:45:03,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:45:03,448 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 15:45:03,448 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:45:03,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329654665] [2023-12-02 15:45:03,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329654665] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:45:03,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:45:03,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:45:03,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670013241] [2023-12-02 15:45:03,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:45:03,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:45:03,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:45:03,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:45:03,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:45:03,488 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 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 5 states, 5 states have (on average 1.8) internal successors, (9), 5 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 15:45:03,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:45:03,579 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2023-12-02 15:45:03,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:45:03,582 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-02 15:45:03,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:45:03,605 INFO L225 Difference]: With dead ends: 21 [2023-12-02 15:45:03,606 INFO L226 Difference]: Without dead ends: 11 [2023-12-02 15:45:03,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 15:45:03,612 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 15 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:45:03,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 34 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:45:03,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-12-02 15:45:03,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-12-02 15:45:03,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 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 15:45:03,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-12-02 15:45:03,640 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2023-12-02 15:45:03,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:45:03,640 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-12-02 15:45:03,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 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 15:45:03,641 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-12-02 15:45:03,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-02 15:45:03,641 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:45:03,641 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:45:03,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 15:45:03,642 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:45:03,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:45:03,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1619324857, now seen corresponding path program 1 times [2023-12-02 15:45:03,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:45:03,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077292509] [2023-12-02 15:45:03,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:45:03,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:45:03,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 15:45:03,657 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 15:45:03,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 15:45:03,683 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 15:45:03,684 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 15:45:03,685 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 15:45:03,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 15:45:03,691 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-12-02 15:45:03,694 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 15:45:03,712 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:45:03 BoogieIcfgContainer [2023-12-02 15:45:03,713 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 15:45:03,713 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 15:45:03,713 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 15:45:03,714 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 15:45:03,714 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:45:03" (3/4) ... [2023-12-02 15:45:03,716 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 15:45:03,717 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 15:45:03,718 INFO L158 Benchmark]: Toolchain (without parser) took 1035.75ms. Allocated memory is still 159.4MB. Free memory was 117.8MB in the beginning and 121.7MB in the end (delta: -3.9MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:45:03,718 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 113.2MB. Free memory is still 63.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:45:03,719 INFO L158 Benchmark]: CACSL2BoogieTranslator took 193.69ms. Allocated memory is still 159.4MB. Free memory was 117.8MB in the beginning and 106.9MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 15:45:03,720 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.52ms. Allocated memory is still 159.4MB. Free memory was 106.9MB in the beginning and 105.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 15:45:03,720 INFO L158 Benchmark]: Boogie Preprocessor took 17.37ms. Allocated memory is still 159.4MB. Free memory was 105.2MB in the beginning and 104.3MB in the end (delta: 896.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:45:03,721 INFO L158 Benchmark]: RCFGBuilder took 219.79ms. Allocated memory is still 159.4MB. Free memory was 104.3MB in the beginning and 93.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 15:45:03,721 INFO L158 Benchmark]: TraceAbstraction took 568.00ms. Allocated memory is still 159.4MB. Free memory was 93.3MB in the beginning and 122.2MB in the end (delta: -28.9MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:45:03,721 INFO L158 Benchmark]: Witness Printer took 4.21ms. Allocated memory is still 159.4MB. Free memory was 122.2MB in the beginning and 121.7MB in the end (delta: 532.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:45:03,724 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 113.2MB. Free memory is still 63.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 193.69ms. Allocated memory is still 159.4MB. Free memory was 117.8MB in the beginning and 106.9MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.52ms. Allocated memory is still 159.4MB. Free memory was 106.9MB in the beginning and 105.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.37ms. Allocated memory is still 159.4MB. Free memory was 105.2MB in the beginning and 104.3MB in the end (delta: 896.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 219.79ms. Allocated memory is still 159.4MB. Free memory was 104.3MB in the beginning and 93.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 568.00ms. Allocated memory is still 159.4MB. Free memory was 93.3MB in the beginning and 122.2MB in the end (delta: -28.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.21ms. Allocated memory is still 159.4MB. Free memory was 122.2MB in the beginning and 121.7MB in the end (delta: 532.2kB). 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: 45]: 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 someBinaryDOUBLEComparisonOperation at line 32, overapproximation of someBinaryArithmeticDOUBLEoperation at line 26. Possible FailurePath: [L1] int __return_main; [L12] int __return_76; [L15] double main__x; [L16] double main__y; [L17] main__x = __VERIFIER_nondet_double() [L18] int main____CPAchecker_TMP_0; VAL [__return_76=0, __return_main=0] [L19] COND TRUE main__x >= 0.0 VAL [__return_76=0, __return_main=0] [L21] COND TRUE main__x <= 10.0 [L23] main____CPAchecker_TMP_0 = 1 VAL [__return_76=0, __return_main=0, main____CPAchecker_TMP_0=1] [L24] COND TRUE main____CPAchecker_TMP_0 != 0 [L26] main__y = (main__x * main__x) - main__x [L27] COND FALSE !(main__y >= 0) [L69] main__y = (main__x * main__x) + 2.0 [L31] int main____CPAchecker_TMP_1; VAL [__return_76=0, __return_main=0, main____CPAchecker_TMP_0=1] [L32] COND FALSE !(main__y >= 0.0) VAL [__return_76=0, __return_main=0, main____CPAchecker_TMP_0=1] [L58] main____CPAchecker_TMP_1 = 0 VAL [__return_76=0, __return_main=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0] [L39] int __tmp_1; [L40] __tmp_1 = main____CPAchecker_TMP_1 [L41] int __VERIFIER_assert__cond; [L42] __VERIFIER_assert__cond = __tmp_1 VAL [__VERIFIER_assert__cond=0, __return_76=0, __return_main=0, __tmp_1=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0] [L43] COND TRUE __VERIFIER_assert__cond == 0 VAL [__VERIFIER_assert__cond=0, __return_76=0, __return_main=0, __tmp_1=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0] [L45] reach_error() VAL [__VERIFIER_assert__cond=0, __return_76=0, __return_main=0, __tmp_1=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 34 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 21 IncrementalHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 11 mSDtfsCounter, 21 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 6, 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, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 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 [2023-12-02 15:45:03,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/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_ed4f9767-db03-4791-9475-0caec3d5c831/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/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_ed4f9767-db03-4791-9475-0caec3d5c831/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/zonotope_loose.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/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_ed4f9767-db03-4791-9475-0caec3d5c831/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 9f4aaad5467edb8ebb713201c5ef1a2ab973a56e3a4674058c8240617473ff22 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:45:05,655 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:45:05,729 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 15:45:05,735 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:45:05,735 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:45:05,763 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:45:05,763 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:45:05,764 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:45:05,765 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:45:05,765 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:45:05,766 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:45:05,766 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:45:05,767 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:45:05,768 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:45:05,768 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:45:05,769 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:45:05,770 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:45:05,770 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:45:05,771 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:45:05,771 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:45:05,772 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:45:05,772 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:45:05,773 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:45:05,773 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:45:05,774 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 15:45:05,774 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 15:45:05,775 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 15:45:05,775 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:45:05,776 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:45:05,776 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:45:05,777 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:45:05,777 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 15:45:05,777 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:45:05,778 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:45:05,778 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:45:05,778 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:45:05,778 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:45:05,778 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:45:05,779 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 15:45:05,779 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 15:45:05,779 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:45:05,780 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:45:05,780 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:45:05,780 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:45:05,780 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_ed4f9767-db03-4791-9475-0caec3d5c831/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f4aaad5467edb8ebb713201c5ef1a2ab973a56e3a4674058c8240617473ff22 [2023-12-02 15:45:06,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:45:06,076 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:45:06,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:45:06,080 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:45:06,080 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:45:06,081 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/float-benchs/zonotope_loose.c.v+cfa-reducer.c [2023-12-02 15:45:08,829 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:45:09,017 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:45:09,018 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/sv-benchmarks/c/float-benchs/zonotope_loose.c.v+cfa-reducer.c [2023-12-02 15:45:09,024 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/bin/utaipan-verify-nQ1chXbOIh/data/e47fc5711/241a07a980fc489c9454d2bcf4d6b692/FLAG39a8b671a [2023-12-02 15:45:09,036 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/bin/utaipan-verify-nQ1chXbOIh/data/e47fc5711/241a07a980fc489c9454d2bcf4d6b692 [2023-12-02 15:45:09,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:45:09,040 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:45:09,041 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:45:09,041 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:45:09,046 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:45:09,046 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:45:09" (1/1) ... [2023-12-02 15:45:09,047 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52c3a98f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:09, skipping insertion in model container [2023-12-02 15:45:09,047 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:45:09" (1/1) ... [2023-12-02 15:45:09,072 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:45:09,238 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_ed4f9767-db03-4791-9475-0caec3d5c831/sv-benchmarks/c/float-benchs/zonotope_loose.c.v+cfa-reducer.c[1094,1107] [2023-12-02 15:45:09,245 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:45:09,261 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:45:09,278 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_ed4f9767-db03-4791-9475-0caec3d5c831/sv-benchmarks/c/float-benchs/zonotope_loose.c.v+cfa-reducer.c[1094,1107] [2023-12-02 15:45:09,280 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:45:09,296 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:45:09,297 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:09 WrapperNode [2023-12-02 15:45:09,297 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:45:09,298 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:45:09,298 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:45:09,299 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:45:09,306 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:09" (1/1) ... [2023-12-02 15:45:09,316 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:09" (1/1) ... [2023-12-02 15:45:09,334 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2023-12-02 15:45:09,334 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:45:09,335 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:45:09,335 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:45:09,335 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:45:09,344 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:09" (1/1) ... [2023-12-02 15:45:09,344 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:09" (1/1) ... [2023-12-02 15:45:09,347 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:09" (1/1) ... [2023-12-02 15:45:09,348 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:09" (1/1) ... [2023-12-02 15:45:09,354 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:09" (1/1) ... [2023-12-02 15:45:09,357 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:09" (1/1) ... [2023-12-02 15:45:09,359 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:09" (1/1) ... [2023-12-02 15:45:09,360 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:09" (1/1) ... [2023-12-02 15:45:09,363 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:45:09,364 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:45:09,364 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:45:09,365 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:45:09,365 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:09" (1/1) ... [2023-12-02 15:45:09,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:45:09,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:45:09,393 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:45:09,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:45:09,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:45:09,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 15:45:09,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:45:09,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:45:09,507 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:45:09,509 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:45:12,272 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:45:12,299 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:45:12,300 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 15:45:12,300 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:45:12 BoogieIcfgContainer [2023-12-02 15:45:12,300 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:45:12,304 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:45:12,304 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:45:12,307 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:45:12,307 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:45:09" (1/3) ... [2023-12-02 15:45:12,308 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5817daf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:45:12, skipping insertion in model container [2023-12-02 15:45:12,308 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:09" (2/3) ... [2023-12-02 15:45:12,309 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5817daf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:45:12, skipping insertion in model container [2023-12-02 15:45:12,309 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:45:12" (3/3) ... [2023-12-02 15:45:12,310 INFO L112 eAbstractionObserver]: Analyzing ICFG zonotope_loose.c.v+cfa-reducer.c [2023-12-02 15:45:12,330 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:45:12,331 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 15:45:12,380 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:45:12,388 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;@1666ef87, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:45:12,388 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 15:45:12,392 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:45:12,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 15:45:12,399 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:45:12,399 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:45:12,400 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:45:12,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:45:12,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1859246955, now seen corresponding path program 1 times [2023-12-02 15:45:12,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:45:12,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1513455120] [2023-12-02 15:45:12,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:45:12,419 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 15:45:12,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:45:12,437 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/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 15:45:12,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/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 15:45:12,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:45:12,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:45:12,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:45:12,897 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 15:45:12,897 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:45:12,898 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:45:12,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1513455120] [2023-12-02 15:45:12,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1513455120] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:45:12,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:45:12,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:45:12,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988212196] [2023-12-02 15:45:12,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:45:12,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:45:12,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:45:12,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:45:12,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:45:12,927 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 15:45:13,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:45:13,023 INFO L93 Difference]: Finished difference Result 22 states and 28 transitions. [2023-12-02 15:45:13,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:45:13,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2023-12-02 15:45:13,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:45:13,032 INFO L225 Difference]: With dead ends: 22 [2023-12-02 15:45:13,032 INFO L226 Difference]: Without dead ends: 13 [2023-12-02 15:45:13,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:45:13,038 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 3 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:45:13,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 45 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:45:13,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-12-02 15:45:13,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-12-02 15:45:13,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:45:13,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2023-12-02 15:45:13,063 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 11 [2023-12-02 15:45:13,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:45:13,063 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2023-12-02 15:45:13,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 15:45:13,064 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2023-12-02 15:45:13,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 15:45:13,064 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:45:13,064 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:45:13,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/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 15:45:13,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/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 15:45:13,265 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:45:13,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:45:13,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1842236294, now seen corresponding path program 1 times [2023-12-02 15:45:13,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:45:13,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1068640430] [2023-12-02 15:45:13,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:45:13,267 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 15:45:13,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:45:13,293 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/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 15:45:13,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/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 15:45:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:45:13,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:45:13,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:45:35,177 WARN L293 SmtUtils]: Spent 6.70s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:45:59,064 WARN L854 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (and (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)) (not (fp.geq (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~main__x~0#1| |ULTIMATE.start_main_~main__x~0#1|) ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) (_ +zero 11 53))) (fp.leq |ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 10.0)))) is different from false [2023-12-02 15:46:01,089 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (and (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)) (not (fp.geq (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~main__x~0#1| |ULTIMATE.start_main_~main__x~0#1|) ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) (_ +zero 11 53))) (fp.leq |ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 10.0)))) is different from true [2023-12-02 15:46:42,919 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 15:46:42,919 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:46:42,920 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:46:42,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1068640430] [2023-12-02 15:46:42,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1068640430] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:46:42,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:46:42,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:46:42,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133154870] [2023-12-02 15:46:42,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:46:42,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 15:46:42,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:46:42,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 15:46:42,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=17, Unknown=3, NotChecked=8, Total=42 [2023-12-02 15:46:42,923 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 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 15:46:43,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:46:45,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:46:47,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:46:49,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:46:51,249 WARN L854 $PredicateComparison]: unable to prove that (and (fp.geq |c_ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)) (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (and (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)) (= (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~main__x~0#1| |ULTIMATE.start_main_~main__x~0#1|) ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) |c_ULTIMATE.start_main_~main__y~0#1|) (fp.leq |ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 10.0)))) (= c_currentRoundingMode roundNearestTiesToEven) (fp.leq |c_ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) c_currentRoundingMode 10.0))) is different from false [2023-12-02 15:46:53,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.47s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:46:55,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:46:57,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:47:00,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:47:02,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:47:04,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:47:06,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:47:08,767 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (and (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (and (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)) (not (fp.geq (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~main__x~0#1| |ULTIMATE.start_main_~main__x~0#1|) .cse0) (_ +zero 11 53))) (fp.leq |ULTIMATE.start_main_~main__x~0#1| .cse1))) (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (and (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)) (= (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~main__x~0#1| |ULTIMATE.start_main_~main__x~0#1|) .cse0) |c_ULTIMATE.start_main_~main__y~0#1|) (fp.leq |ULTIMATE.start_main_~main__x~0#1| .cse1))))) is different from false [2023-12-02 15:47:11,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:47:14,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:47:16,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:47:18,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:47:20,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:47:22,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:47:24,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:47:25,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:47:27,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:47:28,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:47:28,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:47:28,892 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2023-12-02 15:47:28,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 15:47:28,893 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 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 11 [2023-12-02 15:47:28,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:47:28,894 INFO L225 Difference]: With dead ends: 26 [2023-12-02 15:47:28,894 INFO L226 Difference]: Without dead ends: 21 [2023-12-02 15:47:28,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 22.1s TimeCoverageRelationStatistics Valid=18, Invalid=19, Unknown=5, NotChecked=30, Total=72 [2023-12-02 15:47:28,896 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 17 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 40.5s IncrementalHoareTripleChecker+Time [2023-12-02 15:47:28,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 25 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 15 Unknown, 40 Unchecked, 40.5s Time] [2023-12-02 15:47:28,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-02 15:47:28,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 15. [2023-12-02 15:47:28,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 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 15:47:28,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2023-12-02 15:47:28,902 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2023-12-02 15:47:28,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:47:28,902 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2023-12-02 15:47:28,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 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 15:47:28,903 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2023-12-02 15:47:28,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 15:47:28,903 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:47:28,903 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:47:28,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/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 15:47:29,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/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 15:47:29,104 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:47:29,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:47:29,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1739975457, now seen corresponding path program 1 times [2023-12-02 15:47:29,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:47:29,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1952031574] [2023-12-02 15:47:29,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:29,106 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 15:47:29,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:47:29,107 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/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 15:47:29,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/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 (4)] Waiting until timeout for monitored process [2023-12-02 15:47:29,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:47:29,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:47:29,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:47:41,029 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (and (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)) (= (fp.div currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) currentRoundingMode 10.0)) |c_ULTIMATE.start_main_~main__y~0#1|))) is different from true [2023-12-02 15:47:58,710 WARN L854 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (and (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)) (not (fp.geq (fp.div currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) currentRoundingMode 10.0)) (_ +zero 11 53))))) is different from false [2023-12-02 15:48:00,788 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (and (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)) (not (fp.geq (fp.div currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) currentRoundingMode 10.0)) (_ +zero 11 53))))) is different from true [2023-12-02 15:48:29,451 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 15:48:29,451 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:48:29,451 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:48:29,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1952031574] [2023-12-02 15:48:29,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1952031574] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:48:29,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:48:29,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:48:29,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016069112] [2023-12-02 15:48:29,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:48:29,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:48:29,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:48:29,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:48:29,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2023-12-02 15:48:29,454 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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 15:48:31,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:48:47,055 WARN L293 SmtUtils]: Spent 12.18s on a formula simplification. DAG size of input: 12 DAG size of output: 14 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:48:49,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:48:52,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:48:54,365 WARN L854 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (and (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)) (not (fp.geq (fp.div currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) currentRoundingMode 10.0)) (_ +zero 11 53))))) (fp.geq |c_ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53))) is different from false [2023-12-02 15:48:54,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:48:54,373 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2023-12-02 15:48:54,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:48:54,373 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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 11 [2023-12-02 15:48:54,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:48:54,373 INFO L225 Difference]: With dead ends: 20 [2023-12-02 15:48:54,374 INFO L226 Difference]: Without dead ends: 15 [2023-12-02 15:48:54,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.7s TimeCoverageRelationStatistics Valid=12, Invalid=7, Unknown=5, NotChecked=18, Total=42 [2023-12-02 15:48:54,375 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2023-12-02 15:48:54,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 9 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 2 Unknown, 38 Unchecked, 7.5s Time] [2023-12-02 15:48:54,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-12-02 15:48:54,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2023-12-02 15:48:54,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:48:54,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2023-12-02 15:48:54,378 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2023-12-02 15:48:54,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:48:54,378 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2023-12-02 15:48:54,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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 15:48:54,379 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2023-12-02 15:48:54,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 15:48:54,379 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:48:54,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:48:54,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/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 (4)] Ended with exit code 0 [2023-12-02 15:48:54,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/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 15:48:54,580 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:48:54,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:48:54,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1791597211, now seen corresponding path program 1 times [2023-12-02 15:48:54,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:48:54,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1212008476] [2023-12-02 15:48:54,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:48:54,581 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 15:48:54,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:48:54,583 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/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 15:48:54,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/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 (5)] Waiting until timeout for monitored process [2023-12-02 15:48:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:48:54,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 15:48:54,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:49:21,842 WARN L293 SmtUtils]: Spent 11.87s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:49:37,601 WARN L854 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul c_currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| |ULTIMATE.start_main_~main__x~0#1|))) (and (not (fp.geq (fp.sub c_currentRoundingMode .cse0 |ULTIMATE.start_main_~main__x~0#1|) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (= (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) |c_ULTIMATE.start_main_~main__y~0#1|) (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)) (fp.leq |ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) c_currentRoundingMode 10.0))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2023-12-02 15:50:05,440 WARN L854 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul c_currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| |ULTIMATE.start_main_~main__x~0#1|))) (and (not (fp.geq (fp.sub c_currentRoundingMode .cse0 |ULTIMATE.start_main_~main__x~0#1|) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (= (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) |c_ULTIMATE.start_main_~main__y~0#1|) (fp.leq |ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) c_currentRoundingMode 10.0))))) (fp.geq |c_ULTIMATE.start_main_~main__y~0#1| (_ +zero 11 53)) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2023-12-02 15:50:07,225 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 15:50:07,225 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:50:07,225 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:50:07,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1212008476] [2023-12-02 15:50:07,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1212008476] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:50:07,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:50:07,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 15:50:07,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138083770] [2023-12-02 15:50:07,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:50:07,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 15:50:07,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:50:07,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 15:50:07,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=17, Unknown=2, NotChecked=18, Total=56 [2023-12-02 15:50:07,229 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:50:09,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:50:12,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:50:14,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:50:16,328 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (and (fp.geq |c_ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)) (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul c_currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| |ULTIMATE.start_main_~main__x~0#1|))) (and (not (fp.geq (fp.sub c_currentRoundingMode .cse0 |ULTIMATE.start_main_~main__x~0#1|) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (= (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) |c_ULTIMATE.start_main_~main__y~0#1|) (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)) (fp.leq |ULTIMATE.start_main_~main__x~0#1| .cse1)))) (= c_currentRoundingMode roundNearestTiesToEven) (fp.leq |c_ULTIMATE.start_main_~main__x~0#1| .cse1))) is different from false [2023-12-02 15:50:19,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.68s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:50:21,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:50:23,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:50:23,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:50:23,487 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2023-12-02 15:50:23,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 15:50:23,533 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-12-02 15:50:23,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:50:23,534 INFO L225 Difference]: With dead ends: 21 [2023-12-02 15:50:23,534 INFO L226 Difference]: Without dead ends: 13 [2023-12-02 15:50:23,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.0s TimeCoverageRelationStatistics Valid=21, Invalid=18, Unknown=3, NotChecked=30, Total=72 [2023-12-02 15:50:23,536 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 27 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:50:23,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 12 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 6 Unknown, 37 Unchecked, 14.1s Time] [2023-12-02 15:50:23,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-12-02 15:50:23,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-12-02 15:50:23,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0) internal successors, (12), 12 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:50:23,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2023-12-02 15:50:23,540 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 12 [2023-12-02 15:50:23,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:50:23,540 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2023-12-02 15:50:23,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:50:23,541 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2023-12-02 15:50:23,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 15:50:23,541 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:50:23,542 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:50:23,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/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 (5)] Ended with exit code 0 [2023-12-02 15:50:23,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/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 15:50:23,743 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:50:23,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:50:23,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1882784670, now seen corresponding path program 1 times [2023-12-02 15:50:23,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:50:23,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [567455409] [2023-12-02 15:50:23,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:50:23,744 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 15:50:23,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:50:23,745 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/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 15:50:23,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/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 (6)] Waiting until timeout for monitored process [2023-12-02 15:50:24,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:50:24,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:50:24,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:50:34,251 WARN L854 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (and (= (fp.div c_currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| .cse0) |c_ULTIMATE.start_main_~main__y~0#1|) (fp.leq |ULTIMATE.start_main_~main__x~0#1| .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2023-12-02 15:51:09,160 WARN L293 SmtUtils]: Spent 16.23s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:51:26,057 WARN L854 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (let ((.cse0 (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~main__x~0#1| .cse1))) (and (fp.geq .cse0 (_ +zero 11 53)) (not (fp.leq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 105.0))) (fp.leq |ULTIMATE.start_main_~main__x~0#1| .cse1))))) is different from false [2023-12-02 15:51:28,129 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (let ((.cse0 (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~main__x~0#1| .cse1))) (and (fp.geq .cse0 (_ +zero 11 53)) (not (fp.leq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 105.0))) (fp.leq |ULTIMATE.start_main_~main__x~0#1| .cse1))))) is different from true [2023-12-02 15:52:14,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:52:14,508 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:52:14,509 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:52:14,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [567455409] [2023-12-02 15:52:14,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [567455409] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:52:14,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:52:14,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:52:14,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508577436] [2023-12-02 15:52:14,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:52:14,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 15:52:14,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:52:14,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 15:52:14,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=11, Unknown=4, NotChecked=14, Total=42 [2023-12-02 15:52:14,511 INFO L87 Difference]: Start difference. First operand 13 states and 12 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:52:16,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:52:18,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:52:21,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.55s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:52:22,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:52:25,072 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (and (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (and (= (fp.div c_currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| .cse0) |c_ULTIMATE.start_main_~main__y~0#1|) (fp.leq |ULTIMATE.start_main_~main__x~0#1| .cse0))) (= c_currentRoundingMode roundNearestTiesToEven) (fp.leq |c_ULTIMATE.start_main_~main__x~0#1| .cse0))) is different from false [2023-12-02 15:52:27,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.51s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:52:29,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:52:32,027 WARN L854 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (let ((.cse0 (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~main__x~0#1| .cse1))) (and (fp.geq .cse0 (_ +zero 11 53)) (not (fp.leq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 105.0))) (fp.leq |ULTIMATE.start_main_~main__x~0#1| .cse1))))) (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (and (= (fp.div c_currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| .cse2) |c_ULTIMATE.start_main_~main__y~0#1|) (fp.leq |ULTIMATE.start_main_~main__x~0#1| .cse2)))) (fp.geq |c_ULTIMATE.start_main_~main__y~0#1| (_ +zero 11 53)) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2023-12-02 15:52:32,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:52:32,038 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2023-12-02 15:52:32,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 15:52:32,038 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-12-02 15:52:32,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:52:32,039 INFO L225 Difference]: With dead ends: 13 [2023-12-02 15:52:32,039 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 15:52:32,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.6s TimeCoverageRelationStatistics Valid=17, Invalid=13, Unknown=6, NotChecked=36, Total=72 [2023-12-02 15:52:32,040 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 2 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2023-12-02 15:52:32,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 5 Unknown, 34 Unchecked, 12.8s Time] [2023-12-02 15:52:32,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 15:52:32,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 15:52:32,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:52:32,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 15:52:32,042 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2023-12-02 15:52:32,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:52:32,042 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 15:52:32,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:52:32,042 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 15:52:32,042 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 15:52:32,045 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 15:52:32,053 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/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 (6)] Ended with exit code 0 [2023-12-02 15:52:32,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/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 15:52:32,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-02 15:52:32,249 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-02 15:52:32,249 INFO L899 garLoopResultBuilder]: For program point L27(lines 27 71) no Hoare annotation was computed. [2023-12-02 15:52:32,249 INFO L899 garLoopResultBuilder]: For program point L21(lines 21 81) no Hoare annotation was computed. [2023-12-02 15:52:32,250 INFO L899 garLoopResultBuilder]: For program point L19(lines 19 86) no Hoare annotation was computed. [2023-12-02 15:52:32,250 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-02 15:52:32,250 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 13 87) no Hoare annotation was computed. [2023-12-02 15:52:32,250 INFO L899 garLoopResultBuilder]: For program point L34(lines 34 60) no Hoare annotation was computed. [2023-12-02 15:52:32,250 INFO L899 garLoopResultBuilder]: For program point L32(lines 32 65) no Hoare annotation was computed. [2023-12-02 15:52:32,250 INFO L899 garLoopResultBuilder]: For program point L30(lines 27 71) no Hoare annotation was computed. [2023-12-02 15:52:32,250 INFO L899 garLoopResultBuilder]: For program point L57(lines 32 65) no Hoare annotation was computed. [2023-12-02 15:52:32,250 INFO L899 garLoopResultBuilder]: For program point L24(lines 24 76) no Hoare annotation was computed. [2023-12-02 15:52:32,250 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 45) no Hoare annotation was computed. [2023-12-02 15:52:32,250 INFO L899 garLoopResultBuilder]: For program point L45(line 45) no Hoare annotation was computed. [2023-12-02 15:52:32,250 INFO L899 garLoopResultBuilder]: For program point L43(lines 43 52) no Hoare annotation was computed. [2023-12-02 15:52:32,250 INFO L899 garLoopResultBuilder]: For program point L37(lines 34 60) no Hoare annotation was computed. [2023-12-02 15:52:32,252 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-12-02 15:52:32,254 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 15:52:32,257 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:52:32 BoogieIcfgContainer [2023-12-02 15:52:32,257 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 15:52:32,257 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 15:52:32,258 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 15:52:32,258 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 15:52:32,258 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:45:12" (3/4) ... [2023-12-02 15:52:32,259 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 15:52:32,265 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-12-02 15:52:32,266 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-12-02 15:52:32,266 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-12-02 15:52:32,266 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 15:52:32,344 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 15:52:32,344 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 15:52:32,344 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 15:52:32,345 INFO L158 Benchmark]: Toolchain (without parser) took 443305.50ms. Allocated memory is still 117.4MB. Free memory was 94.3MB in the beginning and 76.5MB in the end (delta: 17.8MB). Peak memory consumption was 19.7MB. Max. memory is 16.1GB. [2023-12-02 15:52:32,345 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 62.9MB. Free memory was 39.3MB in the beginning and 39.3MB in the end (delta: 58.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:52:32,346 INFO L158 Benchmark]: CACSL2BoogieTranslator took 256.44ms. Allocated memory is still 117.4MB. Free memory was 94.3MB in the beginning and 82.7MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 15:52:32,346 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.03ms. Allocated memory is still 117.4MB. Free memory was 82.7MB in the beginning and 81.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 15:52:32,347 INFO L158 Benchmark]: Boogie Preprocessor took 28.63ms. Allocated memory is still 117.4MB. Free memory was 81.3MB in the beginning and 80.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 15:52:32,347 INFO L158 Benchmark]: RCFGBuilder took 2936.39ms. Allocated memory is still 117.4MB. Free memory was 80.0MB in the beginning and 68.4MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 15:52:32,348 INFO L158 Benchmark]: TraceAbstraction took 439953.42ms. Allocated memory is still 117.4MB. Free memory was 67.7MB in the beginning and 80.7MB in the end (delta: -12.9MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:52:32,348 INFO L158 Benchmark]: Witness Printer took 87.04ms. Allocated memory is still 117.4MB. Free memory was 80.7MB in the beginning and 76.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 15:52:32,350 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 39.3MB in the beginning and 39.3MB in the end (delta: 58.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 256.44ms. Allocated memory is still 117.4MB. Free memory was 94.3MB in the beginning and 82.7MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.03ms. Allocated memory is still 117.4MB. Free memory was 82.7MB in the beginning and 81.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.63ms. Allocated memory is still 117.4MB. Free memory was 81.3MB in the beginning and 80.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2936.39ms. Allocated memory is still 117.4MB. Free memory was 80.0MB in the beginning and 68.4MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 439953.42ms. Allocated memory is still 117.4MB. Free memory was 67.7MB in the beginning and 80.7MB in the end (delta: -12.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 87.04ms. Allocated memory is still 117.4MB. Free memory was 80.7MB in the beginning and 76.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 45]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 439.9s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 104.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 28 mSolverCounterUnknown, 59 SdHoareTripleChecker+Valid, 75.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 59 mSDsluCounter, 93 SdHoareTripleChecker+Invalid, 74.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 149 IncrementalHoareTripleChecker+Unchecked, 48 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 57 IncrementalHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 45 mSDtfsCounter, 57 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 13 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 97.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 331.9s InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 52 ConstructedInterpolants, 22 QuantifiedInterpolants, 616 SizeOfPredicates, 14 NumberOfNonLiveVariables, 148 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-02 15:52:32,561 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2023-12-02 15:52:32,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4f9767-db03-4791-9475-0caec3d5c831/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE