./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-27.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/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_69169ade-0e11-47db-b620-87c309cca5f0/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-27.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/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_69169ade-0e11-47db-b620-87c309cca5f0/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 e79123d310ccbbfae3d8263279cae4e31c01266f439645cd8009b4db2afa383c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:16:55,395 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:16:55,494 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 13:16:55,501 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:16:55,502 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:16:55,533 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:16:55,534 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:16:55,535 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:16:55,536 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:16:55,536 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:16:55,537 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:16:55,538 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:16:55,538 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:16:55,539 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 13:16:55,540 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:16:55,540 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:16:55,541 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 13:16:55,541 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 13:16:55,542 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:16:55,543 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 13:16:55,543 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 13:16:55,544 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 13:16:55,545 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:16:55,545 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:16:55,546 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 13:16:55,546 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:16:55,547 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 13:16:55,547 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:16:55,548 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:16:55,548 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:16:55,549 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:16:55,549 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 13:16:55,550 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:16:55,550 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:16:55,551 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:16:55,551 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:16:55,552 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:16:55,552 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:16:55,553 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:16:55,553 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:16:55,554 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 13:16:55,555 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 13:16:55,555 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 13:16:55,555 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:16:55,555 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 13:16:55,556 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:16:55,556 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:16:55,556 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_69169ade-0e11-47db-b620-87c309cca5f0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e79123d310ccbbfae3d8263279cae4e31c01266f439645cd8009b4db2afa383c [2023-12-02 13:16:55,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:16:55,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:16:55,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:16:55,889 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:16:55,890 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:16:55,891 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-27.i [2023-12-02 13:16:59,277 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:16:59,522 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:16:59,523 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-27.i [2023-12-02 13:16:59,533 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/bin/utaipan-verify-nQ1chXbOIh/data/bb26752d5/532b52ef096f4df3ad04415fac7c43aa/FLAG00a844ba0 [2023-12-02 13:16:59,546 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/bin/utaipan-verify-nQ1chXbOIh/data/bb26752d5/532b52ef096f4df3ad04415fac7c43aa [2023-12-02 13:16:59,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:16:59,549 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:16:59,551 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:16:59,551 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:16:59,558 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:16:59,559 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:16:59" (1/1) ... [2023-12-02 13:16:59,560 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@722b3ccc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:16:59, skipping insertion in model container [2023-12-02 13:16:59,560 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:16:59" (1/1) ... [2023-12-02 13:16:59,597 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:16:59,747 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_69169ade-0e11-47db-b620-87c309cca5f0/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-27.i[913,926] [2023-12-02 13:16:59,804 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:16:59,815 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:16:59,831 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_69169ade-0e11-47db-b620-87c309cca5f0/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-27.i[913,926] [2023-12-02 13:16:59,860 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:16:59,879 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:16:59,879 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:16:59 WrapperNode [2023-12-02 13:16:59,879 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:16:59,881 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:16:59,881 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:16:59,881 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:16:59,889 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:16:59" (1/1) ... [2023-12-02 13:16:59,901 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:16:59" (1/1) ... [2023-12-02 13:16:59,944 INFO L138 Inliner]: procedures = 26, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 149 [2023-12-02 13:16:59,944 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:16:59,945 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:16:59,945 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:16:59,945 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:16:59,957 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:16:59" (1/1) ... [2023-12-02 13:16:59,958 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:16:59" (1/1) ... [2023-12-02 13:16:59,961 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:16:59" (1/1) ... [2023-12-02 13:16:59,962 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:16:59" (1/1) ... [2023-12-02 13:16:59,974 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:16:59" (1/1) ... [2023-12-02 13:16:59,979 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:16:59" (1/1) ... [2023-12-02 13:16:59,983 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:16:59" (1/1) ... [2023-12-02 13:16:59,985 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:16:59" (1/1) ... [2023-12-02 13:16:59,990 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:16:59,992 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:16:59,992 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:16:59,992 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:16:59,993 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:16:59" (1/1) ... [2023-12-02 13:17:00,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:17:00,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:17:00,038 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:17:00,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:17:00,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:17:00,078 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 13:17:00,079 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 13:17:00,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 13:17:00,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:17:00,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:17:00,186 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:17:00,189 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:17:00,524 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:17:00,758 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:17:00,758 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 13:17:00,760 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:17:00 BoogieIcfgContainer [2023-12-02 13:17:00,760 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:17:00,763 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:17:00,763 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:17:00,767 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:17:00,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:16:59" (1/3) ... [2023-12-02 13:17:00,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56ef71bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:17:00, skipping insertion in model container [2023-12-02 13:17:00,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:16:59" (2/3) ... [2023-12-02 13:17:00,769 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56ef71bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:17:00, skipping insertion in model container [2023-12-02 13:17:00,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:17:00" (3/3) ... [2023-12-02 13:17:00,771 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_normal_file-27.i [2023-12-02 13:17:00,794 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:17:00,794 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 13:17:00,855 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:17:00,863 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;@2d2aa227, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:17:00,863 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 13:17:00,867 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 13:17:00,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-02 13:17:00,877 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:17:00,878 INFO L195 NwaCegarLoop]: trace histogram [20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:17:00,878 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:17:00,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:17:00,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1756933852, now seen corresponding path program 1 times [2023-12-02 13:17:00,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:17:00,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024032833] [2023-12-02 13:17:00,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:17:00,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:17:01,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 13:17:01,321 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 13:17:01,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 13:17:01,584 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 13:17:01,586 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 13:17:01,588 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 13:17:01,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 13:17:01,594 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 13:17:01,598 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 13:17:01,678 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 01:17:01 BoogieIcfgContainer [2023-12-02 13:17:01,678 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 13:17:01,679 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 13:17:01,679 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 13:17:01,680 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 13:17:01,680 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:17:00" (3/4) ... [2023-12-02 13:17:01,683 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 13:17:01,684 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 13:17:01,685 INFO L158 Benchmark]: Toolchain (without parser) took 2135.62ms. Allocated memory is still 146.8MB. Free memory was 111.3MB in the beginning and 106.4MB in the end (delta: 4.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-12-02 13:17:01,686 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 113.2MB. Free memory is still 86.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 13:17:01,686 INFO L158 Benchmark]: CACSL2BoogieTranslator took 328.96ms. Allocated memory is still 146.8MB. Free memory was 111.3MB in the beginning and 97.5MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-12-02 13:17:01,687 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.55ms. Allocated memory is still 146.8MB. Free memory was 97.5MB in the beginning and 94.5MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 13:17:01,688 INFO L158 Benchmark]: Boogie Preprocessor took 45.68ms. Allocated memory is still 146.8MB. Free memory was 94.5MB in the beginning and 92.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 13:17:01,689 INFO L158 Benchmark]: RCFGBuilder took 768.54ms. Allocated memory is still 146.8MB. Free memory was 92.8MB in the beginning and 104.9MB in the end (delta: -12.1MB). Peak memory consumption was 32.8MB. Max. memory is 16.1GB. [2023-12-02 13:17:01,689 INFO L158 Benchmark]: TraceAbstraction took 915.59ms. Allocated memory is still 146.8MB. Free memory was 104.2MB in the beginning and 106.4MB in the end (delta: -2.2MB). Peak memory consumption was 49.0MB. Max. memory is 16.1GB. [2023-12-02 13:17:01,690 INFO L158 Benchmark]: Witness Printer took 4.93ms. Allocated memory is still 146.8MB. Free memory is still 106.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 13:17:01,694 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 113.2MB. Free memory is still 86.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 328.96ms. Allocated memory is still 146.8MB. Free memory was 111.3MB in the beginning and 97.5MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.55ms. Allocated memory is still 146.8MB. Free memory was 97.5MB in the beginning and 94.5MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.68ms. Allocated memory is still 146.8MB. Free memory was 94.5MB in the beginning and 92.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 768.54ms. Allocated memory is still 146.8MB. Free memory was 92.8MB in the beginning and 104.9MB in the end (delta: -12.1MB). Peak memory consumption was 32.8MB. Max. memory is 16.1GB. * TraceAbstraction took 915.59ms. Allocated memory is still 146.8MB. Free memory was 104.2MB in the beginning and 106.4MB in the end (delta: -2.2MB). Peak memory consumption was 49.0MB. Max. memory is 16.1GB. * Witness Printer took 4.93ms. Allocated memory is still 146.8MB. Free memory is still 106.4MB. 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: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 45, overapproximation of shiftRight at line 50, overapproximation of someBinaryArithmeticFLOAToperation at line 72. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] float var_1_1 = 3.9; [L23] unsigned char var_1_2 = 0; [L24] unsigned char var_1_3 = 0; [L25] float var_1_4 = 31.5; [L26] float var_1_5 = 25.4; [L27] float var_1_6 = 9.5; [L28] float var_1_7 = 63.2; [L29] unsigned long int var_1_8 = 1; [L30] signed short int var_1_10 = -50; [L31] unsigned long int var_1_11 = 8; [L32] unsigned char var_1_12 = 32; [L33] float var_1_13 = 15.625; [L34] unsigned char var_1_14 = 1; [L35] unsigned char var_1_15 = 0; [L36] unsigned char var_1_16 = 1; [L37] unsigned char var_1_17 = 1; [L38] unsigned char var_1_19 = 0; [L39] unsigned char var_1_20 = 8; [L40] unsigned short int var_1_21 = 16; [L41] unsigned short int var_1_22 = 128; [L129] isInitial = 1 [L130] FCALL initially() [L131] COND TRUE 1 [L132] FCALL updateLastVariables() [L133] CALL updateVariables() [L89] var_1_2 = __VERIFIER_nondet_uchar() [L90] CALL assume_abort_if_not(var_1_2 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=-50, var_1_11=8, var_1_12=32, var_1_13=125/8, var_1_14=1, var_1_15=0, var_1_16=1, var_1_17=1, var_1_19=0, var_1_1=39/10, var_1_20=8, var_1_21=16, var_1_22=128, var_1_3=0, var_1_4=63/2, var_1_5=127/5, var_1_6=19/2, var_1_7=316/5, var_1_8=1] [L20] COND FALSE !(!cond) [L90] RET assume_abort_if_not(var_1_2 >= 0) VAL [isInitial=1, var_1_10=-50, var_1_11=8, var_1_12=32, var_1_13=125/8, var_1_14=1, var_1_15=0, var_1_16=1, var_1_17=1, var_1_19=0, var_1_1=39/10, var_1_20=8, var_1_21=16, var_1_22=128, var_1_3=0, var_1_4=63/2, var_1_5=127/5, var_1_6=19/2, var_1_7=316/5, var_1_8=1] [L91] CALL assume_abort_if_not(var_1_2 <= 1) VAL [\old(cond)=1, isInitial=1, var_1_10=-50, var_1_11=8, var_1_12=32, var_1_13=125/8, var_1_14=1, var_1_15=0, var_1_16=1, var_1_17=1, var_1_19=0, var_1_1=39/10, var_1_20=8, var_1_21=16, var_1_22=128, var_1_2=0, var_1_3=0, var_1_4=63/2, var_1_5=127/5, var_1_6=19/2, var_1_7=316/5, var_1_8=1] [L20] COND FALSE !(!cond) [L91] RET assume_abort_if_not(var_1_2 <= 1) VAL [isInitial=1, var_1_10=-50, var_1_11=8, var_1_12=32, var_1_13=125/8, var_1_14=1, var_1_15=0, var_1_16=1, var_1_17=1, var_1_19=0, var_1_1=39/10, var_1_20=8, var_1_21=16, var_1_22=128, var_1_2=0, var_1_3=0, var_1_4=63/2, var_1_5=127/5, var_1_6=19/2, var_1_7=316/5, var_1_8=1] [L92] var_1_3 = __VERIFIER_nondet_uchar() [L93] CALL assume_abort_if_not(var_1_3 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=-50, var_1_11=8, var_1_12=32, var_1_13=125/8, var_1_14=1, var_1_15=0, var_1_16=1, var_1_17=1, var_1_19=0, var_1_1=39/10, var_1_20=8, var_1_21=16, var_1_22=128, var_1_2=0, var_1_4=63/2, var_1_5=127/5, var_1_6=19/2, var_1_7=316/5, var_1_8=1] [L20] COND FALSE !(!cond) [L93] RET assume_abort_if_not(var_1_3 >= 0) VAL [isInitial=1, var_1_10=-50, var_1_11=8, var_1_12=32, var_1_13=125/8, var_1_14=1, var_1_15=0, var_1_16=1, var_1_17=1, var_1_19=0, var_1_1=39/10, var_1_20=8, var_1_21=16, var_1_22=128, var_1_2=0, var_1_4=63/2, var_1_5=127/5, var_1_6=19/2, var_1_7=316/5, var_1_8=1] [L94] CALL assume_abort_if_not(var_1_3 <= 1) VAL [\old(cond)=1, isInitial=1, var_1_10=-50, var_1_11=8, var_1_12=32, var_1_13=125/8, var_1_14=1, var_1_15=0, var_1_16=1, var_1_17=1, var_1_19=0, var_1_1=39/10, var_1_20=8, var_1_21=16, var_1_22=128, var_1_2=0, var_1_3=1, var_1_4=63/2, var_1_5=127/5, var_1_6=19/2, var_1_7=316/5, var_1_8=1] [L20] COND FALSE !(!cond) [L94] RET assume_abort_if_not(var_1_3 <= 1) VAL [isInitial=1, var_1_10=-50, var_1_11=8, var_1_12=32, var_1_13=125/8, var_1_14=1, var_1_15=0, var_1_16=1, var_1_17=1, var_1_19=0, var_1_1=39/10, var_1_20=8, var_1_21=16, var_1_22=128, var_1_2=0, var_1_3=1, var_1_4=63/2, var_1_5=127/5, var_1_6=19/2, var_1_7=316/5, var_1_8=1] [L95] var_1_4 = __VERIFIER_nondet_float() [L96] CALL assume_abort_if_not((var_1_4 >= 0.0F && var_1_4 <= -1.0e-20F) || (var_1_4 <= 9223372.036854765600e+12F && var_1_4 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=-50, var_1_11=8, var_1_12=32, var_1_13=125/8, var_1_14=1, var_1_15=0, var_1_16=1, var_1_17=1, var_1_19=0, var_1_1=39/10, var_1_20=8, var_1_21=16, var_1_22=128, var_1_2=0, var_1_3=1, var_1_5=127/5, var_1_6=19/2, var_1_7=316/5, var_1_8=1] [L20] COND FALSE !(!cond) [L96] RET assume_abort_if_not((var_1_4 >= 0.0F && var_1_4 <= -1.0e-20F) || (var_1_4 <= 9223372.036854765600e+12F && var_1_4 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=-50, var_1_11=8, var_1_12=32, var_1_13=125/8, var_1_14=1, var_1_15=0, var_1_16=1, var_1_17=1, var_1_19=0, var_1_1=39/10, var_1_20=8, var_1_21=16, var_1_22=128, var_1_2=0, var_1_3=1, var_1_5=127/5, var_1_6=19/2, var_1_7=316/5, var_1_8=1] [L97] var_1_5 = __VERIFIER_nondet_float() [L98] CALL assume_abort_if_not((var_1_5 >= 0.0F && var_1_5 <= -1.0e-20F) || (var_1_5 <= 9223372.036854765600e+12F && var_1_5 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=-50, var_1_11=8, var_1_12=32, var_1_13=125/8, var_1_14=1, var_1_15=0, var_1_16=1, var_1_17=1, var_1_19=0, var_1_1=39/10, var_1_20=8, var_1_21=16, var_1_22=128, var_1_2=0, var_1_3=1, var_1_6=19/2, var_1_7=316/5, var_1_8=1] [L20] COND FALSE !(!cond) [L98] RET assume_abort_if_not((var_1_5 >= 0.0F && var_1_5 <= -1.0e-20F) || (var_1_5 <= 9223372.036854765600e+12F && var_1_5 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=-50, var_1_11=8, var_1_12=32, var_1_13=125/8, var_1_14=1, var_1_15=0, var_1_16=1, var_1_17=1, var_1_19=0, var_1_1=39/10, var_1_20=8, var_1_21=16, var_1_22=128, var_1_2=0, var_1_3=1, var_1_6=19/2, var_1_7=316/5, var_1_8=1] [L99] var_1_6 = __VERIFIER_nondet_float() [L100] CALL assume_abort_if_not((var_1_6 >= 0.0F && var_1_6 <= -1.0e-20F) || (var_1_6 <= 9223372.036854765600e+12F && var_1_6 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=-50, var_1_11=8, var_1_12=32, var_1_13=125/8, var_1_14=1, var_1_15=0, var_1_16=1, var_1_17=1, var_1_19=0, var_1_1=39/10, var_1_20=8, var_1_21=16, var_1_22=128, var_1_2=0, var_1_3=1, var_1_7=316/5, var_1_8=1] [L20] COND FALSE !(!cond) [L100] RET assume_abort_if_not((var_1_6 >= 0.0F && var_1_6 <= -1.0e-20F) || (var_1_6 <= 9223372.036854765600e+12F && var_1_6 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=-50, var_1_11=8, var_1_12=32, var_1_13=125/8, var_1_14=1, var_1_15=0, var_1_16=1, var_1_17=1, var_1_19=0, var_1_1=39/10, var_1_20=8, var_1_21=16, var_1_22=128, var_1_2=0, var_1_3=1, var_1_7=316/5, var_1_8=1] [L101] var_1_7 = __VERIFIER_nondet_float() [L102] CALL assume_abort_if_not((var_1_7 >= 0.0F && var_1_7 <= -1.0e-20F) || (var_1_7 <= 9223372.036854765600e+12F && var_1_7 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=-50, var_1_11=8, var_1_12=32, var_1_13=125/8, var_1_14=1, var_1_15=0, var_1_16=1, var_1_17=1, var_1_19=0, var_1_1=39/10, var_1_20=8, var_1_21=16, var_1_22=128, var_1_2=0, var_1_3=1, var_1_8=1] [L20] COND FALSE !(!cond) [L102] RET assume_abort_if_not((var_1_7 >= 0.0F && var_1_7 <= -1.0e-20F) || (var_1_7 <= 9223372.036854765600e+12F && var_1_7 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=-50, var_1_11=8, var_1_12=32, var_1_13=125/8, var_1_14=1, var_1_15=0, var_1_16=1, var_1_17=1, var_1_19=0, var_1_1=39/10, var_1_20=8, var_1_21=16, var_1_22=128, var_1_2=0, var_1_3=1, var_1_8=1] [L103] var_1_11 = __VERIFIER_nondet_ulong() [L104] CALL assume_abort_if_not(var_1_11 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=-50, var_1_12=32, var_1_13=125/8, var_1_14=1, var_1_15=0, var_1_16=1, var_1_17=1, var_1_19=0, var_1_1=39/10, var_1_20=8, var_1_21=16, var_1_22=128, var_1_2=0, var_1_3=1, var_1_8=1] [L20] COND FALSE !(!cond) [L104] RET assume_abort_if_not(var_1_11 >= 0) VAL [isInitial=1, var_1_10=-50, var_1_12=32, var_1_13=125/8, var_1_14=1, var_1_15=0, var_1_16=1, var_1_17=1, var_1_19=0, var_1_1=39/10, var_1_20=8, var_1_21=16, var_1_22=128, var_1_2=0, var_1_3=1, var_1_8=1] [L105] CALL assume_abort_if_not(var_1_11 <= 33) VAL [\old(cond)=1, isInitial=1, var_1_10=-50, var_1_11=33, var_1_12=32, var_1_13=125/8, var_1_14=1, var_1_15=0, var_1_16=1, var_1_17=1, var_1_19=0, var_1_1=39/10, var_1_20=8, var_1_21=16, var_1_22=128, var_1_2=0, var_1_3=1, var_1_8=1] [L20] COND FALSE !(!cond) [L105] RET assume_abort_if_not(var_1_11 <= 33) VAL [isInitial=1, var_1_10=-50, var_1_11=33, var_1_12=32, var_1_13=125/8, var_1_14=1, var_1_15=0, var_1_16=1, var_1_17=1, var_1_19=0, var_1_1=39/10, var_1_20=8, var_1_21=16, var_1_22=128, var_1_2=0, var_1_3=1, var_1_8=1] [L106] var_1_13 = __VERIFIER_nondet_float() [L107] CALL assume_abort_if_not((var_1_13 >= -922337.2036854776000e+13F && var_1_13 <= -1.0e-20F) || (var_1_13 <= 9223372.036854776000e+12F && var_1_13 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=-50, var_1_11=33, var_1_12=32, var_1_14=1, var_1_15=0, var_1_16=1, var_1_17=1, var_1_19=0, var_1_1=39/10, var_1_20=8, var_1_21=16, var_1_22=128, var_1_2=0, var_1_3=1, var_1_8=1] [L20] COND FALSE !(!cond) [L107] RET assume_abort_if_not((var_1_13 >= -922337.2036854776000e+13F && var_1_13 <= -1.0e-20F) || (var_1_13 <= 9223372.036854776000e+12F && var_1_13 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=-50, var_1_11=33, var_1_12=32, var_1_14=1, var_1_15=0, var_1_16=1, var_1_17=1, var_1_19=0, var_1_1=39/10, var_1_20=8, var_1_21=16, var_1_22=128, var_1_2=0, var_1_3=1, var_1_8=1] [L108] CALL assume_abort_if_not(var_1_13 != 0.0F) VAL [\old(cond)=1, isInitial=1, var_1_10=-50, var_1_11=33, var_1_12=32, var_1_14=1, var_1_15=0, var_1_16=1, var_1_17=1, var_1_19=0, var_1_1=39/10, var_1_20=8, var_1_21=16, var_1_22=128, var_1_2=0, var_1_3=1, var_1_8=1] [L20] COND FALSE !(!cond) [L108] RET assume_abort_if_not(var_1_13 != 0.0F) VAL [isInitial=1, var_1_10=-50, var_1_11=33, var_1_12=32, var_1_14=1, var_1_15=0, var_1_16=1, var_1_17=1, var_1_19=0, var_1_1=39/10, var_1_20=8, var_1_21=16, var_1_22=128, var_1_2=0, var_1_3=1, var_1_8=1] [L109] var_1_15 = __VERIFIER_nondet_uchar() [L110] CALL assume_abort_if_not(var_1_15 >= 1) VAL [\old(cond)=1, isInitial=1, var_1_10=-50, var_1_11=33, var_1_12=32, var_1_14=1, var_1_15=1, var_1_16=1, var_1_17=1, var_1_19=0, var_1_1=39/10, var_1_20=8, var_1_21=16, var_1_22=128, var_1_2=0, var_1_3=1, var_1_8=1] [L20] COND FALSE !(!cond) [L110] RET assume_abort_if_not(var_1_15 >= 1) VAL [isInitial=1, var_1_10=-50, var_1_11=33, var_1_12=32, var_1_14=1, var_1_15=1, var_1_16=1, var_1_17=1, var_1_19=0, var_1_1=39/10, var_1_20=8, var_1_21=16, var_1_22=128, var_1_2=0, var_1_3=1, var_1_8=1] [L111] CALL assume_abort_if_not(var_1_15 <= 1) VAL [\old(cond)=1, isInitial=1, var_1_10=-50, var_1_11=33, var_1_12=32, var_1_14=1, var_1_15=1, var_1_16=1, var_1_17=1, var_1_19=0, var_1_1=39/10, var_1_20=8, var_1_21=16, var_1_22=128, var_1_2=0, var_1_3=1, var_1_8=1] [L20] COND FALSE !(!cond) [L111] RET assume_abort_if_not(var_1_15 <= 1) VAL [isInitial=1, var_1_10=-50, var_1_11=33, var_1_12=32, var_1_14=1, var_1_15=1, var_1_16=1, var_1_17=1, var_1_19=0, var_1_1=39/10, var_1_20=8, var_1_21=16, var_1_22=128, var_1_2=0, var_1_3=1, var_1_8=1] [L112] var_1_16 = __VERIFIER_nondet_uchar() [L113] CALL assume_abort_if_not(var_1_16 >= 1) VAL [\old(cond)=1, isInitial=1, var_1_10=-50, var_1_11=33, var_1_12=32, var_1_14=1, var_1_15=1, var_1_16=1, var_1_17=1, var_1_19=0, var_1_1=39/10, var_1_20=8, var_1_21=16, var_1_22=128, var_1_2=0, var_1_3=1, var_1_8=1] [L20] COND FALSE !(!cond) [L113] RET assume_abort_if_not(var_1_16 >= 1) VAL [isInitial=1, var_1_10=-50, var_1_11=33, var_1_12=32, var_1_14=1, var_1_15=1, var_1_16=1, var_1_17=1, var_1_19=0, var_1_1=39/10, var_1_20=8, var_1_21=16, var_1_22=128, var_1_2=0, var_1_3=1, var_1_8=1] [L114] CALL assume_abort_if_not(var_1_16 <= 1) VAL [\old(cond)=1, isInitial=1, var_1_10=-50, var_1_11=33, var_1_12=32, var_1_14=1, var_1_15=1, var_1_16=1, var_1_17=1, var_1_19=0, var_1_1=39/10, var_1_20=8, var_1_21=16, var_1_22=128, var_1_2=0, var_1_3=1, var_1_8=1] [L20] COND FALSE !(!cond) [L114] RET assume_abort_if_not(var_1_16 <= 1) VAL [isInitial=1, var_1_10=-50, var_1_11=33, var_1_12=32, var_1_14=1, var_1_15=1, var_1_16=1, var_1_17=1, var_1_19=0, var_1_1=39/10, var_1_20=8, var_1_21=16, var_1_22=128, var_1_2=0, var_1_3=1, var_1_8=1] [L115] var_1_17 = __VERIFIER_nondet_uchar() [L116] CALL assume_abort_if_not(var_1_17 >= 1) VAL [\old(cond)=1, isInitial=1, var_1_10=-50, var_1_11=33, var_1_12=32, var_1_14=1, var_1_15=1, var_1_16=1, var_1_17=1, var_1_19=0, var_1_1=39/10, var_1_20=8, var_1_21=16, var_1_22=128, var_1_2=0, var_1_3=1, var_1_8=1] [L20] COND FALSE !(!cond) [L116] RET assume_abort_if_not(var_1_17 >= 1) VAL [isInitial=1, var_1_10=-50, var_1_11=33, var_1_12=32, var_1_14=1, var_1_15=1, var_1_16=1, var_1_17=1, var_1_19=0, var_1_1=39/10, var_1_20=8, var_1_21=16, var_1_22=128, var_1_2=0, var_1_3=1, var_1_8=1] [L117] CALL assume_abort_if_not(var_1_17 <= 1) VAL [\old(cond)=1, isInitial=1, var_1_10=-50, var_1_11=33, var_1_12=32, var_1_14=1, var_1_15=1, var_1_16=1, var_1_17=1, var_1_19=0, var_1_1=39/10, var_1_20=8, var_1_21=16, var_1_22=128, var_1_2=0, var_1_3=1, var_1_8=1] [L20] COND FALSE !(!cond) [L117] RET assume_abort_if_not(var_1_17 <= 1) VAL [isInitial=1, var_1_10=-50, var_1_11=33, var_1_12=32, var_1_14=1, var_1_15=1, var_1_16=1, var_1_17=1, var_1_19=0, var_1_1=39/10, var_1_20=8, var_1_21=16, var_1_22=128, var_1_2=0, var_1_3=1, var_1_8=1] [L118] var_1_19 = __VERIFIER_nondet_uchar() [L119] CALL assume_abort_if_not(var_1_19 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=-50, var_1_11=33, var_1_12=32, var_1_14=1, var_1_15=1, var_1_16=1, var_1_17=1, var_1_1=39/10, var_1_20=8, var_1_21=16, var_1_22=128, var_1_2=0, var_1_3=1, var_1_8=1] [L20] COND FALSE !(!cond) [L119] RET assume_abort_if_not(var_1_19 >= 0) VAL [isInitial=1, var_1_10=-50, var_1_11=33, var_1_12=32, var_1_14=1, var_1_15=1, var_1_16=1, var_1_17=1, var_1_1=39/10, var_1_20=8, var_1_21=16, var_1_22=128, var_1_2=0, var_1_3=1, var_1_8=1] [L120] CALL assume_abort_if_not(var_1_19 <= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=-50, var_1_11=33, var_1_12=32, var_1_14=1, var_1_15=1, var_1_16=1, var_1_17=1, var_1_19=0, var_1_1=39/10, var_1_20=8, var_1_21=16, var_1_22=128, var_1_2=0, var_1_3=1, var_1_8=1] [L20] COND FALSE !(!cond) [L120] RET assume_abort_if_not(var_1_19 <= 0) VAL [isInitial=1, var_1_10=-50, var_1_11=33, var_1_12=32, var_1_14=1, var_1_15=1, var_1_16=1, var_1_17=1, var_1_19=0, var_1_1=39/10, var_1_20=8, var_1_21=16, var_1_22=128, var_1_2=0, var_1_3=1, var_1_8=1] [L133] RET updateVariables() [L134] CALL step() [L45] COND FALSE !(var_1_6 == (var_1_4 / var_1_13)) [L48] var_1_20 = var_1_11 [L49] var_1_21 = 8 [L50] EXPR 2u >> var_1_11 [L50] COND TRUE (var_1_21 + var_1_12) > (2u >> var_1_11) [L51] COND TRUE var_1_12 != var_1_21 [L52] var_1_10 = var_1_11 [L57] COND TRUE ! var_1_2 [L58] COND TRUE var_1_2 || var_1_3 [L59] var_1_14 = ((! (! var_1_15)) && (var_1_16 && var_1_17)) [L68] unsigned char stepLocal_1 = var_1_14; [L69] unsigned char stepLocal_0 = var_1_14; [L70] COND TRUE var_1_14 || stepLocal_0 [L71] COND TRUE stepLocal_1 || var_1_14 [L72] var_1_1 = (((((((((var_1_4) < (var_1_5)) ? (var_1_4) : (var_1_5)))) > (var_1_6)) ? (((((var_1_4) < (var_1_5)) ? (var_1_4) : (var_1_5)))) : (var_1_6))) - var_1_7) [L79] COND TRUE var_1_6 > (- var_1_7) [L80] COND FALSE !(var_1_5 == (((((var_1_6 * var_1_7)) > (var_1_1)) ? ((var_1_6 * var_1_7)) : (var_1_1)))) [L86] var_1_22 = var_1_8 [L134] RET step() [L135] CALL, EXPR property() [L125] EXPR (((var_1_14 || var_1_14) ? ((var_1_14 || var_1_14) ? (var_1_1 == ((float) (((((((((var_1_4) < (var_1_5)) ? (var_1_4) : (var_1_5)))) > (var_1_6)) ? (((((var_1_4) < (var_1_5)) ? (var_1_4) : (var_1_5)))) : (var_1_6))) - var_1_7))) : (var_1_1 == ((float) 1.0000000075E8f))) : (var_1_1 == ((float) var_1_7))) && ((var_1_6 > (- var_1_7)) ? ((var_1_5 == (((((var_1_6 * var_1_7)) > (var_1_1)) ? ((var_1_6 * var_1_7)) : (var_1_1)))) ? (var_1_8 == ((unsigned long int) 8u)) : 1) : (var_1_8 == ((unsigned long int) var_1_20)))) && (((var_1_21 + var_1_12) > (2u >> var_1_11)) ? ((var_1_12 != var_1_21) ? (var_1_10 == ((signed short int) var_1_11)) : (var_1_10 == ((signed short int) 128))) : 1) [L125-L126] return ((((((((var_1_14 || var_1_14) ? ((var_1_14 || var_1_14) ? (var_1_1 == ((float) (((((((((var_1_4) < (var_1_5)) ? (var_1_4) : (var_1_5)))) > (var_1_6)) ? (((((var_1_4) < (var_1_5)) ? (var_1_4) : (var_1_5)))) : (var_1_6))) - var_1_7))) : (var_1_1 == ((float) 1.0000000075E8f))) : (var_1_1 == ((float) var_1_7))) && ((var_1_6 > (- var_1_7)) ? ((var_1_5 == (((((var_1_6 * var_1_7)) > (var_1_1)) ? ((var_1_6 * var_1_7)) : (var_1_1)))) ? (var_1_8 == ((unsigned long int) 8u)) : 1) : (var_1_8 == ((unsigned long int) var_1_20)))) && (((var_1_21 + var_1_12) > (2u >> var_1_11)) ? ((var_1_12 != var_1_21) ? (var_1_10 == ((signed short int) var_1_11)) : (var_1_10 == ((signed short int) 128))) : 1)) && ((var_1_6 == (var_1_4 / var_1_13)) ? (var_1_12 == ((unsigned char) var_1_11)) : 1)) && ((! var_1_2) ? ((var_1_2 || var_1_3) ? (var_1_14 == ((unsigned char) ((! (! var_1_15)) && (var_1_16 && var_1_17)))) : ((((((var_1_12) > (var_1_12)) ? (var_1_12) : (var_1_12))) >= var_1_21) ? (var_1_14 == ((unsigned char) (var_1_2 || var_1_16))) : (var_1_14 == ((unsigned char) (! var_1_19))))) : 1)) && (var_1_20 == ((unsigned char) var_1_11))) && (var_1_21 == ((unsigned short int) 8))) && (var_1_22 == ((unsigned short int) var_1_8)) ; [L135] RET, EXPR property() [L135] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, var_1_10=33, var_1_11=33, var_1_12=32, var_1_14=1, var_1_15=1, var_1_16=1, var_1_17=1, var_1_19=0, var_1_1=400000003/4, var_1_20=33, var_1_21=8, var_1_22=1, var_1_2=0, var_1_3=1, var_1_7=400000003/4, var_1_8=1] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, var_1_10=33, var_1_11=33, var_1_12=32, var_1_14=1, var_1_15=1, var_1_16=1, var_1_17=1, var_1_19=0, var_1_1=400000003/4, var_1_20=33, var_1_21=8, var_1_22=1, var_1_2=0, var_1_3=1, var_1_7=400000003/4, var_1_8=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 1, TraceHistogramMax: 20, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-12-02 13:17:01,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/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_69169ade-0e11-47db-b620-87c309cca5f0/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-27.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/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_69169ade-0e11-47db-b620-87c309cca5f0/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 e79123d310ccbbfae3d8263279cae4e31c01266f439645cd8009b4db2afa383c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:17:04,086 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:17:04,180 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 13:17:04,188 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:17:04,189 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:17:04,225 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:17:04,226 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:17:04,227 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:17:04,228 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:17:04,228 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:17:04,229 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:17:04,230 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:17:04,230 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:17:04,231 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:17:04,232 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:17:04,232 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:17:04,234 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:17:04,234 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:17:04,235 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 13:17:04,236 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 13:17:04,236 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:17:04,237 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:17:04,238 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:17:04,238 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:17:04,239 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 13:17:04,239 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 13:17:04,240 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 13:17:04,240 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 13:17:04,241 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:17:04,241 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:17:04,242 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:17:04,242 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 13:17:04,243 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:17:04,243 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:17:04,243 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:17:04,244 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:17:04,244 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:17:04,244 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 13:17:04,245 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 13:17:04,245 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 13:17:04,245 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:17:04,246 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 13:17:04,246 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:17:04,246 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:17:04,246 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_69169ade-0e11-47db-b620-87c309cca5f0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e79123d310ccbbfae3d8263279cae4e31c01266f439645cd8009b4db2afa383c [2023-12-02 13:17:04,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:17:04,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:17:04,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:17:04,680 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:17:04,681 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:17:04,683 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-27.i [2023-12-02 13:17:08,118 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:17:08,367 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:17:08,368 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-27.i [2023-12-02 13:17:08,379 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/bin/utaipan-verify-nQ1chXbOIh/data/a5b5b2890/19a26a0778ac470ca9ae1dcbfeeb255c/FLAG21084d5b1 [2023-12-02 13:17:08,394 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/bin/utaipan-verify-nQ1chXbOIh/data/a5b5b2890/19a26a0778ac470ca9ae1dcbfeeb255c [2023-12-02 13:17:08,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:17:08,398 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:17:08,399 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:17:08,399 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:17:08,405 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:17:08,405 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:17:08" (1/1) ... [2023-12-02 13:17:08,407 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63cca64f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:17:08, skipping insertion in model container [2023-12-02 13:17:08,407 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:17:08" (1/1) ... [2023-12-02 13:17:08,441 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:17:08,595 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-27.i[913,926] [2023-12-02 13:17:08,657 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:17:08,676 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:17:08,688 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_69169ade-0e11-47db-b620-87c309cca5f0/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-27.i[913,926] [2023-12-02 13:17:08,725 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:17:08,745 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:17:08,745 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:17:08 WrapperNode [2023-12-02 13:17:08,746 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:17:08,747 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:17:08,747 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:17:08,747 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:17:08,754 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:17:08" (1/1) ... [2023-12-02 13:17:08,768 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:17:08" (1/1) ... [2023-12-02 13:17:08,803 INFO L138 Inliner]: procedures = 27, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 136 [2023-12-02 13:17:08,804 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:17:08,805 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:17:08,806 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:17:08,806 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:17:08,815 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:17:08" (1/1) ... [2023-12-02 13:17:08,815 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:17:08" (1/1) ... [2023-12-02 13:17:08,822 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:17:08" (1/1) ... [2023-12-02 13:17:08,822 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:17:08" (1/1) ... [2023-12-02 13:17:08,836 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:17:08" (1/1) ... [2023-12-02 13:17:08,841 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:17:08" (1/1) ... [2023-12-02 13:17:08,845 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:17:08" (1/1) ... [2023-12-02 13:17:08,848 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:17:08" (1/1) ... [2023-12-02 13:17:08,854 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:17:08,855 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:17:08,856 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:17:08,856 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:17:08,857 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:17:08" (1/1) ... [2023-12-02 13:17:08,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:17:08,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:17:08,897 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:17:08,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:17:08,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:17:08,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 13:17:08,944 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 13:17:08,944 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 13:17:08,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:17:08,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:17:09,043 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:17:09,046 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:17:13,308 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:17:13,395 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:17:13,395 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 13:17:13,396 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:17:13 BoogieIcfgContainer [2023-12-02 13:17:13,396 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:17:13,399 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:17:13,399 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:17:13,403 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:17:13,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:17:08" (1/3) ... [2023-12-02 13:17:13,404 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1189e008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:17:13, skipping insertion in model container [2023-12-02 13:17:13,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:17:08" (2/3) ... [2023-12-02 13:17:13,405 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1189e008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:17:13, skipping insertion in model container [2023-12-02 13:17:13,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:17:13" (3/3) ... [2023-12-02 13:17:13,407 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_normal_file-27.i [2023-12-02 13:17:13,429 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:17:13,429 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 13:17:13,482 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:17:13,488 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;@228c65de, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:17:13,488 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 13:17:13,492 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 34 states have (on average 1.4411764705882353) internal successors, (49), 35 states have internal predecessors, (49), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 13:17:13,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-02 13:17:13,506 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:17:13,507 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:17:13,507 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:17:13,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:17:13,512 INFO L85 PathProgramCache]: Analyzing trace with hash 123817539, now seen corresponding path program 1 times [2023-12-02 13:17:13,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:17:13,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2039977141] [2023-12-02 13:17:13,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:17:13,526 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 13:17:13,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:17:13,528 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/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 13:17:13,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/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 13:17:14,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:17:14,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 13:17:14,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:17:14,119 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 398 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2023-12-02 13:17:14,119 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:17:14,120 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:17:14,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2039977141] [2023-12-02 13:17:14,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2039977141] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:17:14,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:17:14,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:17:14,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934111559] [2023-12-02 13:17:14,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:17:14,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 13:17:14,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:17:14,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 13:17:14,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 13:17:14,164 INFO L87 Difference]: Start difference. First operand has 57 states, 34 states have (on average 1.4411764705882353) internal successors, (49), 35 states have internal predecessors, (49), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-02 13:17:16,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 13:17:16,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:17:16,370 INFO L93 Difference]: Finished difference Result 111 states and 196 transitions. [2023-12-02 13:17:16,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 13:17:16,421 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 124 [2023-12-02 13:17:16,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:17:16,428 INFO L225 Difference]: With dead ends: 111 [2023-12-02 13:17:16,429 INFO L226 Difference]: Without dead ends: 55 [2023-12-02 13:17:16,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 13:17:16,435 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:17:16,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2023-12-02 13:17:16,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-12-02 13:17:16,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2023-12-02 13:17:16,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 33 states have internal predecessors, (44), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 13:17:16,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 84 transitions. [2023-12-02 13:17:16,494 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 84 transitions. Word has length 124 [2023-12-02 13:17:16,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:17:16,495 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 84 transitions. [2023-12-02 13:17:16,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-02 13:17:16,496 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 84 transitions. [2023-12-02 13:17:16,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-02 13:17:16,500 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:17:16,501 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:17:16,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/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 13:17:16,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/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 13:17:16,702 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:17:16,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:17:16,703 INFO L85 PathProgramCache]: Analyzing trace with hash -341608901, now seen corresponding path program 1 times [2023-12-02 13:17:16,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:17:16,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [842628539] [2023-12-02 13:17:16,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:17:16,705 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 13:17:16,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:17:16,707 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/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 13:17:16,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/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 13:17:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:17:17,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 13:17:17,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:17:17,821 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 397 proven. 30 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2023-12-02 13:17:17,821 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:17:18,017 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-02 13:17:18,017 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:17:18,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [842628539] [2023-12-02 13:17:18,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [842628539] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 13:17:18,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:17:18,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-12-02 13:17:18,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581209034] [2023-12-02 13:17:18,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:17:18,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:17:18,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:17:18,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:17:18,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-02 13:17:18,023 INFO L87 Difference]: Start difference. First operand 55 states and 84 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-02 13:17:20,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 13:17:20,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:17:20,735 INFO L93 Difference]: Finished difference Result 113 states and 170 transitions. [2023-12-02 13:17:20,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:17:20,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 124 [2023-12-02 13:17:20,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:17:20,787 INFO L225 Difference]: With dead ends: 113 [2023-12-02 13:17:20,787 INFO L226 Difference]: Without dead ends: 59 [2023-12-02 13:17:20,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-02 13:17:20,789 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 48 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-02 13:17:20,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 107 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2023-12-02 13:17:20,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-12-02 13:17:20,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-12-02 13:17:20,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 36 states have internal predecessors, (46), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 13:17:20,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 86 transitions. [2023-12-02 13:17:20,803 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 86 transitions. Word has length 124 [2023-12-02 13:17:20,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:17:20,805 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 86 transitions. [2023-12-02 13:17:20,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-02 13:17:20,805 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 86 transitions. [2023-12-02 13:17:20,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-02 13:17:20,809 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:17:20,809 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:17:20,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/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 13:17:21,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/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 13:17:21,013 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:17:21,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:17:21,014 INFO L85 PathProgramCache]: Analyzing trace with hash 2079370460, now seen corresponding path program 1 times [2023-12-02 13:17:21,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:17:21,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1069565120] [2023-12-02 13:17:21,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:17:21,015 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 13:17:21,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:17:21,017 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/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 13:17:21,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/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 13:17:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:17:21,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 13:17:21,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:17:22,160 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-02 13:17:22,160 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:17:22,161 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:17:22,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1069565120] [2023-12-02 13:17:22,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1069565120] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:17:22,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:17:22,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:17:22,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774161177] [2023-12-02 13:17:22,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:17:22,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:17:22,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:17:22,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:17:22,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:17:22,166 INFO L87 Difference]: Start difference. First operand 59 states and 86 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-02 13:17:24,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 13:17:26,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 13:17:28,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 13:17:28,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:17:28,088 INFO L93 Difference]: Finished difference Result 175 states and 256 transitions. [2023-12-02 13:17:28,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:17:28,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 125 [2023-12-02 13:17:28,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:17:28,093 INFO L225 Difference]: With dead ends: 175 [2023-12-02 13:17:28,093 INFO L226 Difference]: Without dead ends: 117 [2023-12-02 13:17:28,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:17:28,096 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 15 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-12-02 13:17:28,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 149 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 2 Unknown, 0 Unchecked, 5.9s Time] [2023-12-02 13:17:28,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-12-02 13:17:28,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 113. [2023-12-02 13:17:28,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 68 states have (on average 1.2352941176470589) internal successors, (84), 68 states have internal predecessors, (84), 40 states have call successors, (40), 4 states have call predecessors, (40), 4 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-02 13:17:28,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 164 transitions. [2023-12-02 13:17:28,130 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 164 transitions. Word has length 125 [2023-12-02 13:17:28,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:17:28,131 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 164 transitions. [2023-12-02 13:17:28,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-02 13:17:28,131 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 164 transitions. [2023-12-02 13:17:28,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-02 13:17:28,134 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:17:28,134 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:17:28,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/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 13:17:28,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/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 13:17:28,335 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:17:28,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:17:28,336 INFO L85 PathProgramCache]: Analyzing trace with hash -211015577, now seen corresponding path program 1 times [2023-12-02 13:17:28,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:17:28,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [901135551] [2023-12-02 13:17:28,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:17:28,338 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 13:17:28,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:17:28,339 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/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 13:17:28,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/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 13:17:28,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:17:28,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 13:17:28,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:17:50,048 WARN L293 SmtUtils]: Spent 12.04s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:18:06,587 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 358 proven. 72 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2023-12-02 13:18:06,587 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:18:10,488 WARN L854 $PredicateComparison]: unable to prove that (or (fp.gt c_~var_1_6~0 (fp.neg c_~var_1_7~0)) (forall ((~var_1_4~0 (_ FloatingPoint 8 24)) (~var_1_13~0 (_ FloatingPoint 8 24))) (not (fp.eq c_~var_1_6~0 (fp.div c_currentRoundingMode ~var_1_4~0 ~var_1_13~0))))) is different from false [2023-12-02 13:18:14,255 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:18:14,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [901135551] [2023-12-02 13:18:14,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [901135551] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:18:14,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [888722133] [2023-12-02 13:18:14,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:18:14,256 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:18:14,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:18:14,258 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:18:14,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69169ade-0e11-47db-b620-87c309cca5f0/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-12-02 13:18:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:18:15,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-02 13:18:15,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:19:06,712 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 100000000000000000000.0))) (.cse0 ((_ to_fp 8 24) c_currentRoundingMode 9223372036854765600.0))) (and (fp.eq c_~var_1_6~0 (fp.div c_currentRoundingMode c_~var_1_4~0 c_~var_1_13~0)) (= c_~var_1_12~0 ((_ extract 7 0) c_~var_1_11~0)) (fp.leq c_~var_1_5~0 .cse0) (fp.geq c_~var_1_6~0 .cse1) (fp.geq c_~var_1_5~0 .cse1) (= (_ bv1 8) c_~var_1_14~0) (fp.leq c_~var_1_6~0 .cse0) (fp.geq c_~var_1_7~0 .cse1) (fp.leq c_~var_1_7~0 .cse0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2023-12-02 13:20:22,291 WARN L293 SmtUtils]: Spent 22.82s on a formula simplification that was a NOOP. DAG size: 33 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:22:00,476 WARN L293 SmtUtils]: Spent 23.30s on a formula simplification that was a NOOP. DAG size: 40 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:23:18,713 WARN L293 SmtUtils]: Spent 24.29s on a formula simplification that was a NOOP. DAG size: 44 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:25:43,320 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ extract 7 0) c_~var_1_11~0)) (.cse6 ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 100000000000000000000.0))) (.cse1 ((_ to_fp 8 24) c_currentRoundingMode 9223372036854765600.0))) (and (fp.eq c_~var_1_6~0 (fp.div c_currentRoundingMode c_~var_1_4~0 c_~var_1_13~0)) (= c_~var_1_12~0 .cse0) (fp.leq c_~var_1_5~0 .cse1) (let ((.cse3 (fp.gt c_~var_1_5~0 c_~var_1_6~0)) (.cse2 (= c_~var_1_1~0 (fp.sub c_currentRoundingMode c_~var_1_6~0 c_~var_1_7~0)))) (or (and .cse2 (not .cse3)) (and .cse3 (let ((.cse4 (fp.gt c_~var_1_4~0 c_~var_1_6~0))) (or (and .cse4 (let ((.cse5 (fp.lt c_~var_1_4~0 c_~var_1_5~0))) (or (and (not .cse5) (= c_~var_1_1~0 (fp.sub c_currentRoundingMode c_~var_1_5~0 c_~var_1_7~0))) (and .cse5 (= c_~var_1_1~0 (fp.sub c_currentRoundingMode c_~var_1_4~0 c_~var_1_7~0)))))) (and .cse2 (not .cse4))))))) (not (= (_ bv0 8) c_~var_1_2~0)) (fp.geq c_~var_1_6~0 .cse6) (fp.geq c_~var_1_5~0 .cse6) (= c_~var_1_20~0 .cse0) (not (= (_ bv8 32) ((_ zero_extend 24) c_~var_1_12~0))) (= ((_ extract 15 0) c_~var_1_11~0) c_~var_1_10~0) (= (_ bv1 8) c_~var_1_14~0) (fp.leq c_~var_1_6~0 .cse1) (fp.geq c_~var_1_7~0 .cse6) (= (_ bv8 16) c_~var_1_21~0) (fp.leq c_~var_1_7~0 .cse1) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2023-12-02 13:25:47,765 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 343 proven. 108 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2023-12-02 13:25:47,765 INFO L327 TraceCheckSpWp]: Computing backward predicates...