./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0530a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0530a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --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 b38de4b3771aa524216757fa4f71e6ec5c1d192307f57d06dbabf379102384cd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:38:09,122 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:38:09,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:38:09,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:38:09,185 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:38:09,189 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:38:09,191 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:38:09,195 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:38:09,198 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:38:09,203 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:38:09,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:38:09,207 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:38:09,207 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:38:09,210 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:38:09,212 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:38:09,217 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:38:09,219 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:38:09,221 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:38:09,223 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:38:09,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:38:09,234 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:38:09,236 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:38:09,239 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:38:09,240 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:38:09,250 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:38:09,251 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:38:09,251 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:38:09,253 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:38:09,254 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:38:09,256 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:38:09,256 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:38:09,257 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:38:09,259 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:38:09,261 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:38:09,263 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:38:09,263 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:38:09,264 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:38:09,264 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:38:09,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:38:09,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:38:09,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:38:09,268 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-13 02:38:09,307 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:38:09,307 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:38:09,308 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:38:09,309 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:38:09,309 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:38:09,309 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:38:09,310 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:38:09,310 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 02:38:09,310 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:38:09,310 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:38:09,311 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 02:38:09,311 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 02:38:09,311 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:38:09,311 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 02:38:09,312 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 02:38:09,312 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 02:38:09,313 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:38:09,313 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 02:38:09,313 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 02:38:09,313 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 02:38:09,314 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:38:09,314 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:38:09,314 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:38:09,314 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:38:09,315 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:38:09,315 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 02:38:09,315 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:38:09,316 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:38:09,316 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:38:09,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:38:09,316 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:38:09,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:38:09,317 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:38:09,317 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:38:09,317 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:38:09,318 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 02:38:09,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 02:38:09,318 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:38:09,318 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:38:09,318 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:38:09,319 INFO L138 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_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b38de4b3771aa524216757fa4f71e6ec5c1d192307f57d06dbabf379102384cd [2021-11-13 02:38:09,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:38:09,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:38:09,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:38:09,714 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:38:09,715 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:38:09,717 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/float-newlib/float_req_bl_0530a.c [2021-11-13 02:38:09,796 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/data/ed065d038/41b5785d622f4a038860b1e6e88b1fc5/FLAG4d189c68e [2021-11-13 02:38:10,441 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:38:10,442 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/sv-benchmarks/c/float-newlib/float_req_bl_0530a.c [2021-11-13 02:38:10,464 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/data/ed065d038/41b5785d622f4a038860b1e6e88b1fc5/FLAG4d189c68e [2021-11-13 02:38:10,750 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/data/ed065d038/41b5785d622f4a038860b1e6e88b1fc5 [2021-11-13 02:38:10,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:38:10,768 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:38:10,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:38:10,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:38:10,788 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:38:10,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:38:10" (1/1) ... [2021-11-13 02:38:10,790 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b206274 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:10, skipping insertion in model container [2021-11-13 02:38:10,790 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:38:10" (1/1) ... [2021-11-13 02:38:10,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:38:10,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:38:11,192 WARN L228 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_6ed59cd9-8b40-4c31-a781-c0225744feb2/sv-benchmarks/c/float-newlib/float_req_bl_0530a.c[15590,15603] [2021-11-13 02:38:11,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:38:11,264 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 02:38:11,423 WARN L228 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_6ed59cd9-8b40-4c31-a781-c0225744feb2/sv-benchmarks/c/float-newlib/float_req_bl_0530a.c[15590,15603] [2021-11-13 02:38:11,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:38:11,469 INFO L208 MainTranslator]: Completed translation [2021-11-13 02:38:11,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:11 WrapperNode [2021-11-13 02:38:11,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:38:11,470 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 02:38:11,470 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 02:38:11,471 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 02:38:11,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:11" (1/1) ... [2021-11-13 02:38:11,509 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:11" (1/1) ... [2021-11-13 02:38:11,612 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 02:38:11,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 02:38:11,613 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 02:38:11,613 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 02:38:11,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:11" (1/1) ... [2021-11-13 02:38:11,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:11" (1/1) ... [2021-11-13 02:38:11,653 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:11" (1/1) ... [2021-11-13 02:38:11,653 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:11" (1/1) ... [2021-11-13 02:38:11,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:11" (1/1) ... [2021-11-13 02:38:11,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:11" (1/1) ... [2021-11-13 02:38:11,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:11" (1/1) ... [2021-11-13 02:38:11,769 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 02:38:11,774 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 02:38:11,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 02:38:11,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 02:38:11,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:11" (1/1) ... [2021-11-13 02:38:11,785 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:38:11,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:38:11,813 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 02:38:11,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 02:38:11,870 INFO L130 BoogieDeclarations]: Found specification of procedure copysign_float [2021-11-13 02:38:11,871 INFO L138 BoogieDeclarations]: Found implementation of procedure copysign_float [2021-11-13 02:38:11,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 02:38:11,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 02:38:11,872 INFO L130 BoogieDeclarations]: Found specification of procedure __kernel_tanf [2021-11-13 02:38:11,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __kernel_tanf [2021-11-13 02:38:11,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-13 02:38:11,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 02:38:11,872 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2021-11-13 02:38:11,873 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2021-11-13 02:38:11,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-13 02:38:11,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 02:38:11,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 02:38:11,873 INFO L130 BoogieDeclarations]: Found specification of procedure scalbn_float [2021-11-13 02:38:11,873 INFO L138 BoogieDeclarations]: Found implementation of procedure scalbn_float [2021-11-13 02:38:11,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 02:38:11,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-11-13 02:38:11,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 02:38:13,517 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 02:38:13,518 INFO L299 CfgBuilder]: Removed 65 assume(true) statements. [2021-11-13 02:38:13,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:38:13 BoogieIcfgContainer [2021-11-13 02:38:13,521 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 02:38:13,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 02:38:13,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 02:38:13,528 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 02:38:13,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:38:10" (1/3) ... [2021-11-13 02:38:13,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@437a506d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:38:13, skipping insertion in model container [2021-11-13 02:38:13,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:11" (2/3) ... [2021-11-13 02:38:13,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@437a506d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:38:13, skipping insertion in model container [2021-11-13 02:38:13,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:38:13" (3/3) ... [2021-11-13 02:38:13,531 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0530a.c [2021-11-13 02:38:13,539 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 02:38:13,540 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 02:38:13,604 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 02:38:13,619 INFO L339 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=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 02:38:13,619 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 02:38:13,648 INFO L276 IsEmpty]: Start isEmpty. Operand has 167 states, 150 states have (on average 1.6933333333333334) internal successors, (254), 151 states have internal predecessors, (254), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-13 02:38:13,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-13 02:38:13,655 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:13,655 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:13,656 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:38:13,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:13,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1439887409, now seen corresponding path program 1 times [2021-11-13 02:38:13,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:13,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036733683] [2021-11-13 02:38:13,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:13,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:13,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:14,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:14,051 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:14,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036733683] [2021-11-13 02:38:14,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036733683] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:14,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:14,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 02:38:14,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897068647] [2021-11-13 02:38:14,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:14,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 02:38:14,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:14,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 02:38:14,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 02:38:14,104 INFO L87 Difference]: Start difference. First operand has 167 states, 150 states have (on average 1.6933333333333334) internal successors, (254), 151 states have internal predecessors, (254), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:14,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:14,336 INFO L93 Difference]: Finished difference Result 333 states and 562 transitions. [2021-11-13 02:38:14,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 02:38:14,339 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-13 02:38:14,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:14,352 INFO L225 Difference]: With dead ends: 333 [2021-11-13 02:38:14,353 INFO L226 Difference]: Without dead ends: 165 [2021-11-13 02:38:14,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 02:38:14,367 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 113.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.72ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 136.27ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:14,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 175 Invalid, 53 Unknown, 0 Unchecked, 5.72ms Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 136.27ms Time] [2021-11-13 02:38:14,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-11-13 02:38:14,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2021-11-13 02:38:14,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 149 states have (on average 1.3691275167785235) internal successors, (204), 149 states have internal predecessors, (204), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-13 02:38:14,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 226 transitions. [2021-11-13 02:38:14,447 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 226 transitions. Word has length 9 [2021-11-13 02:38:14,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:14,447 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 226 transitions. [2021-11-13 02:38:14,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:14,448 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 226 transitions. [2021-11-13 02:38:14,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-13 02:38:14,449 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:14,450 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:14,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 02:38:14,451 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:38:14,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:14,453 INFO L85 PathProgramCache]: Analyzing trace with hash -364122791, now seen corresponding path program 1 times [2021-11-13 02:38:14,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:14,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419910570] [2021-11-13 02:38:14,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:14,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:14,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 02:38:14,665 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 02:38:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 02:38:14,908 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-13 02:38:14,909 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 02:38:14,911 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-13 02:38:14,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 02:38:14,917 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-13 02:38:14,920 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 02:38:15,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 02:38:15 BoogieIcfgContainer [2021-11-13 02:38:15,003 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-13 02:38:15,004 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 02:38:15,004 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 02:38:15,004 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 02:38:15,005 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:38:13" (3/4) ... [2021-11-13 02:38:15,008 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-13 02:38:15,008 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 02:38:15,009 INFO L158 Benchmark]: Toolchain (without parser) took 4241.23ms. Allocated memory was 96.5MB in the beginning and 159.4MB in the end (delta: 62.9MB). Free memory was 65.8MB in the beginning and 102.2MB in the end (delta: -36.4MB). Peak memory consumption was 25.0MB. Max. memory is 16.1GB. [2021-11-13 02:38:15,010 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 96.5MB. Free memory was 51.6MB in the beginning and 51.5MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:38:15,010 INFO L158 Benchmark]: CACSL2BoogieTranslator took 686.58ms. Allocated memory was 96.5MB in the beginning and 123.7MB in the end (delta: 27.3MB). Free memory was 65.5MB in the beginning and 81.2MB in the end (delta: -15.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-13 02:38:15,011 INFO L158 Benchmark]: Boogie Procedure Inliner took 142.12ms. Allocated memory is still 123.7MB. Free memory was 81.2MB in the beginning and 74.3MB in the end (delta: 6.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-13 02:38:15,012 INFO L158 Benchmark]: Boogie Preprocessor took 160.55ms. Allocated memory is still 123.7MB. Free memory was 74.3MB in the beginning and 67.4MB in the end (delta: 6.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-13 02:38:15,012 INFO L158 Benchmark]: RCFGBuilder took 1746.52ms. Allocated memory is still 123.7MB. Free memory was 67.4MB in the beginning and 51.9MB in the end (delta: 15.5MB). Peak memory consumption was 35.5MB. Max. memory is 16.1GB. [2021-11-13 02:38:15,013 INFO L158 Benchmark]: TraceAbstraction took 1479.38ms. Allocated memory was 123.7MB in the beginning and 159.4MB in the end (delta: 35.7MB). Free memory was 51.9MB in the beginning and 102.2MB in the end (delta: -50.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:38:15,014 INFO L158 Benchmark]: Witness Printer took 4.18ms. Allocated memory is still 159.4MB. Free memory is still 102.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:38:15,017 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 96.5MB. Free memory was 51.6MB in the beginning and 51.5MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 686.58ms. Allocated memory was 96.5MB in the beginning and 123.7MB in the end (delta: 27.3MB). Free memory was 65.5MB in the beginning and 81.2MB in the end (delta: -15.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 142.12ms. Allocated memory is still 123.7MB. Free memory was 81.2MB in the beginning and 74.3MB in the end (delta: 6.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 160.55ms. Allocated memory is still 123.7MB. Free memory was 74.3MB in the beginning and 67.4MB in the end (delta: 6.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1746.52ms. Allocated memory is still 123.7MB. Free memory was 67.4MB in the beginning and 51.9MB in the end (delta: 15.5MB). Peak memory consumption was 35.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1479.38ms. Allocated memory was 123.7MB in the beginning and 159.4MB in the end (delta: 35.7MB). Free memory was 51.9MB in the beginning and 102.2MB in the end (delta: -50.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.18ms. Allocated memory is still 159.4MB. Free memory is still 102.2MB. 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: 629]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 628, overapproximation of someUnaryDOUBLEoperation at line 497, overapproximation of bitwiseAnd at line 591, overapproximation of someBinaryArithmeticFLOAToperation at line 596. Possible FailurePath: [L14] static const float huge_floor = 1.0e30; [L79-L81] static const float two25_scalbn = 3.355443200e+07, twom25_scalbn = 2.9802322388e-08, huge_scalbn = 1.0e+30, tiny_scalbn = 1.0e-30; [L149] static const int init_jk_krempio[] = {4, 7, 9}; [L151-L155] static const float PIo2_krempio[] = { 1.5703125000e+00, 4.5776367188e-04, 2.5987625122e-05, 7.5437128544e-08, 6.0026650317e-11, 7.3896444519e-13, 5.3845816694e-15, 5.6378512969e-18, 8.3009228831e-20, 3.2756352257e-22, 6.3331015649e-25, }; [L157-L159] static const float zero_krempio = 0.0, one_krempio = 1.0, two8_krempio = 2.5600000000e+02, twon8_krempio = 3.9062500000e-03; [L334-L352] static const __int32_t two_over_pi_rempio[] = { 0xA2, 0xF9, 0x83, 0x6E, 0x4E, 0x44, 0x15, 0x29, 0xFC, 0x27, 0x57, 0xD1, 0xF5, 0x34, 0xDD, 0xC0, 0xDB, 0x62, 0x95, 0x99, 0x3C, 0x43, 0x90, 0x41, 0xFE, 0x51, 0x63, 0xAB, 0xDE, 0xBB, 0xC5, 0x61, 0xB7, 0x24, 0x6E, 0x3A, 0x42, 0x4D, 0xD2, 0xE0, 0x06, 0x49, 0x2E, 0xEA, 0x09, 0xD1, 0x92, 0x1C, 0xFE, 0x1D, 0xEB, 0x1C, 0xB1, 0x29, 0xA7, 0x3E, 0xE8, 0x82, 0x35, 0xF5, 0x2E, 0xBB, 0x44, 0x84, 0xE9, 0x9C, 0x70, 0x26, 0xB4, 0x5F, 0x7E, 0x41, 0x39, 0x91, 0xD6, 0x39, 0x83, 0x53, 0x39, 0xF4, 0x9C, 0x84, 0x5F, 0x8B, 0xBD, 0xF9, 0x28, 0x3B, 0x1F, 0xF8, 0x97, 0xFF, 0xDE, 0x05, 0x98, 0x0F, 0xEF, 0x2F, 0x11, 0x8B, 0x5A, 0x0A, 0x6D, 0x1F, 0x6D, 0x36, 0x7E, 0xCF, 0x27, 0xCB, 0x09, 0xB7, 0x4F, 0x46, 0x3F, 0x66, 0x9E, 0x5F, 0xEA, 0x2D, 0x75, 0x27, 0xBA, 0xC7, 0xEB, 0xE5, 0xF1, 0x7B, 0x3D, 0x07, 0x39, 0xF7, 0x8A, 0x52, 0x92, 0xEA, 0x6B, 0xFB, 0x5F, 0xB1, 0x1F, 0x8D, 0x5D, 0x08, 0x56, 0x03, 0x30, 0x46, 0xFC, 0x7B, 0x6B, 0xAB, 0xF0, 0xCF, 0xBC, 0x20, 0x9A, 0xF4, 0x36, 0x1D, 0xA9, 0xE3, 0x91, 0x61, 0x5E, 0xE6, 0x1B, 0x08, 0x65, 0x99, 0x85, 0x5F, 0x14, 0xA0, 0x68, 0x40, 0x8D, 0xFF, 0xD8, 0x80, 0x4D, 0x73, 0x27, 0x31, 0x06, 0x06, 0x15, 0x56, 0xCA, 0x73, 0xA8, 0xC9, 0x60, 0xE2, 0x7B, 0xC0, 0x8C, 0x6B, }; [L354-L360] static const __int32_t npio2_hw_rempio[] = { 0x3fc90f00, 0x40490f00, 0x4096cb00, 0x40c90f00, 0x40fb5300, 0x4116cb00, 0x412fed00, 0x41490f00, 0x41623100, 0x417b5300, 0x418a3a00, 0x4196cb00, 0x41a35c00, 0x41afed00, 0x41bc7e00, 0x41c90f00, 0x41d5a000, 0x41e23100, 0x41eec200, 0x41fb5300, 0x4203f200, 0x420a3a00, 0x42108300, 0x4216cb00, 0x421d1400, 0x42235c00, 0x4229a500, 0x422fed00, 0x42363600, 0x423c7e00, 0x4242c700, 0x42490f00}; [L362-L371] static const float zero_rempio = 0.0000000000e+00, half_rempio = 5.0000000000e-01, two8_rempio = 2.5600000000e+02, invpio2_rempio = 6.3661980629e-01, pio2_1_rempio = 1.5707855225e+00, pio2_1t_rempio = 1.0804334124e-05, pio2_2_rempio = 1.0804273188e-05, pio2_2t_rempio = 6.0770999344e-11, pio2_3_rempio = 6.0770943833e-11, pio2_3t_rempio = 6.1232342629e-17; [L491-L499] static const float one_ktan = 1.0000000000e+00, pio4_ktan = 7.8539812565e-01, pio4lo_ktan = 3.7748947079e-08, T_ktan[] = { 3.3333334327e-01, 1.3333334029e-01, 5.3968254477e-02, 2.1869488060e-02, 8.8632395491e-03, 3.5920790397e-03, 1.4562094584e-03, 5.8804126456e-04, 2.4646313977e-04, 7.8179444245e-05, 7.1407252108e-05, -1.8558637748e-05, 2.5907305826e-05, }; [L624] float x = 0.0f; [L625] CALL, EXPR tan_float(x) [L582] float y[2], z = 0.0; [L583] __int32_t n, ix; VAL [\old(x)=0, half_rempio=1/2, huge_floor=1000000000000000000000000000000, huge_scalbn=1000000000000000000000000000000, init_jk_krempio={19:0}, invpio2_rempio=63661980629/100000000000, npio2_hw_rempio={23:0}, one_krempio=1, one_ktan=1, pio2_1_rempio=628314209/400000000, pio2_1t_rempio=2701083531/250000000000000, pio2_2_rempio=2701068297/250000000000000, pio2_2t_rempio=3798187459/62500000000000000000, pio2_3_rempio=60770943833/1000000000000000000000, pio2_3t_rempio=61232342629/1000000000000000000000000000, PIo2_krempio={13:0}, pio4_ktan=15707962513/20000000000, pio4lo_ktan=37748947079/1000000000000000000, T_ktan={14:0}, tiny_scalbn=1/1000000000000000000000000000000, two25_scalbn=33554432, two8_krempio=256, two8_rempio=256, two_over_pi_rempio={30:0}, twom25_scalbn=7450580597/250000000000000000, twon8_krempio=1/256, x=0, y={25:0}, z=0, zero_krempio=0, zero_rempio=0] [L586] ieee_float_shape_type gf_u; [L587] gf_u.value = (x) [L588] EXPR gf_u.word [L588] (ix) = gf_u.word [L591] ix &= 0x7fffffff VAL [\old(x)=0, half_rempio=1/2, huge_floor=1000000000000000000000000000000, huge_scalbn=1000000000000000000000000000000, init_jk_krempio={19:0}, invpio2_rempio=63661980629/100000000000, npio2_hw_rempio={23:0}, one_krempio=1, one_ktan=1, pio2_1_rempio=628314209/400000000, pio2_1t_rempio=2701083531/250000000000000, pio2_2_rempio=2701068297/250000000000000, pio2_2t_rempio=3798187459/62500000000000000000, pio2_3_rempio=60770943833/1000000000000000000000, pio2_3t_rempio=61232342629/1000000000000000000000000000, PIo2_krempio={13:0}, pio4_ktan=15707962513/20000000000, pio4lo_ktan=37748947079/1000000000000000000, T_ktan={14:0}, tiny_scalbn=1/1000000000000000000000000000000, two25_scalbn=33554432, two8_krempio=256, two8_rempio=256, two_over_pi_rempio={30:0}, twom25_scalbn=7450580597/250000000000000000, twon8_krempio=1/256, x=0, y={25:0}, z=0, zero_krempio=0, zero_rempio=0] [L592] COND FALSE !(ix <= 0x3f490fda) VAL [\old(x)=0, half_rempio=1/2, huge_floor=1000000000000000000000000000000, huge_scalbn=1000000000000000000000000000000, init_jk_krempio={19:0}, invpio2_rempio=63661980629/100000000000, ix=2139095040, npio2_hw_rempio={23:0}, one_krempio=1, one_ktan=1, pio2_1_rempio=628314209/400000000, pio2_1t_rempio=2701083531/250000000000000, pio2_2_rempio=2701068297/250000000000000, pio2_2t_rempio=3798187459/62500000000000000000, pio2_3_rempio=60770943833/1000000000000000000000, pio2_3t_rempio=61232342629/1000000000000000000000000000, PIo2_krempio={13:0}, pio4_ktan=15707962513/20000000000, pio4lo_ktan=37748947079/1000000000000000000, T_ktan={14:0}, tiny_scalbn=1/1000000000000000000000000000000, two25_scalbn=33554432, two8_krempio=256, two8_rempio=256, two_over_pi_rempio={30:0}, twom25_scalbn=7450580597/250000000000000000, twon8_krempio=1/256, x=0, y={25:0}, z=0, zero_krempio=0, zero_rempio=0] [L595] COND TRUE !((ix) < 0x7f800000L) [L596] return x - x; [L596] return x - x; VAL [\old(x)=0, half_rempio=1/2, huge_floor=1000000000000000000000000000000, huge_scalbn=1000000000000000000000000000000, init_jk_krempio={19:0}, invpio2_rempio=63661980629/100000000000, ix=2139095040, npio2_hw_rempio={23:0}, one_krempio=1, one_ktan=1, pio2_1_rempio=628314209/400000000, pio2_1t_rempio=2701083531/250000000000000, pio2_2_rempio=2701068297/250000000000000, pio2_2t_rempio=3798187459/62500000000000000000, pio2_3_rempio=60770943833/1000000000000000000000, pio2_3t_rempio=61232342629/1000000000000000000000000000, PIo2_krempio={13:0}, pio4_ktan=15707962513/20000000000, pio4lo_ktan=37748947079/1000000000000000000, T_ktan={14:0}, tiny_scalbn=1/1000000000000000000000000000000, two25_scalbn=33554432, two8_krempio=256, two8_rempio=256, two_over_pi_rempio={30:0}, twom25_scalbn=7450580597/250000000000000000, twon8_krempio=1/256, x=0, z=0, zero_krempio=0, zero_rempio=0] [L625] RET, EXPR tan_float(x) [L625] float res = tan_float(x); [L628] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [half_rempio=1/2, huge_floor=1000000000000000000000000000000, huge_scalbn=1000000000000000000000000000000, init_jk_krempio={19:0}, invpio2_rempio=63661980629/100000000000, npio2_hw_rempio={23:0}, one_krempio=1, one_ktan=1, pio2_1_rempio=628314209/400000000, pio2_1t_rempio=2701083531/250000000000000, pio2_2_rempio=2701068297/250000000000000, pio2_2t_rempio=3798187459/62500000000000000000, pio2_3_rempio=60770943833/1000000000000000000000, pio2_3t_rempio=61232342629/1000000000000000000000000000, PIo2_krempio={13:0}, pio4_ktan=15707962513/20000000000, pio4lo_ktan=37748947079/1000000000000000000, res=1000000000000000000000000000001, res == 0.0f && __signbit_float(res) == 0=0, T_ktan={14:0}, tiny_scalbn=1/1000000000000000000000000000000, two25_scalbn=33554432, two8_krempio=256, two8_rempio=256, two_over_pi_rempio={30:0}, twom25_scalbn=7450580597/250000000000000000, twon8_krempio=1/256, x=0, zero_krempio=0, zero_rempio=0] [L628] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L629] reach_error() VAL [half_rempio=1/2, huge_floor=1000000000000000000000000000000, huge_scalbn=1000000000000000000000000000000, init_jk_krempio={19:0}, invpio2_rempio=63661980629/100000000000, npio2_hw_rempio={23:0}, one_krempio=1, one_ktan=1, pio2_1_rempio=628314209/400000000, pio2_1t_rempio=2701083531/250000000000000, pio2_2_rempio=2701068297/250000000000000, pio2_2t_rempio=3798187459/62500000000000000000, pio2_3_rempio=60770943833/1000000000000000000000, pio2_3t_rempio=61232342629/1000000000000000000000000000, PIo2_krempio={13:0}, pio4_ktan=15707962513/20000000000, pio4lo_ktan=37748947079/1000000000000000000, res=1000000000000000000000000000001, T_ktan={14:0}, tiny_scalbn=1/1000000000000000000000000000000, two25_scalbn=33554432, two8_krempio=256, two8_rempio=256, two_over_pi_rempio={30:0}, twom25_scalbn=7450580597/250000000000000000, twon8_krempio=1/256, x=0, zero_krempio=0, zero_rempio=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 167 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 136.27ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 175 SdHoareTripleChecker+Invalid, 113.45ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 53 IncrementalHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 175 mSDtfsCounter, 53 mSolverCounterSat, 5.72ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=167occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-13 02:38:15,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0530a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --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 b38de4b3771aa524216757fa4f71e6ec5c1d192307f57d06dbabf379102384cd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:38:17,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:38:17,659 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:38:17,707 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:38:17,707 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:38:17,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:38:17,715 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:38:17,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:38:17,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:38:17,735 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:38:17,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:38:17,739 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:38:17,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:38:17,742 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:38:17,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:38:17,750 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:38:17,751 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:38:17,753 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:38:17,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:38:17,764 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:38:17,766 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:38:17,767 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:38:17,770 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:38:17,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:38:17,783 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:38:17,783 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:38:17,784 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:38:17,786 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:38:17,787 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:38:17,788 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:38:17,789 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:38:17,791 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:38:17,793 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:38:17,794 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:38:17,796 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:38:17,796 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:38:17,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:38:17,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:38:17,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:38:17,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:38:17,812 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:38:17,818 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-13 02:38:17,869 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:38:17,869 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:38:17,870 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:38:17,871 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:38:17,871 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:38:17,871 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:38:17,871 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:38:17,871 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:38:17,872 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:38:17,872 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:38:17,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:38:17,875 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 02:38:17,875 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 02:38:17,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:38:17,875 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:38:17,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:38:17,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:38:17,876 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:38:17,876 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 02:38:17,876 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 02:38:17,877 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 02:38:17,877 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:38:17,877 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:38:17,877 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:38:17,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:38:17,878 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 02:38:17,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:38:17,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:38:17,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:38:17,878 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:38:17,879 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:38:17,879 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 02:38:17,879 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 02:38:17,879 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:38:17,880 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:38:17,880 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:38:17,880 INFO L138 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_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b38de4b3771aa524216757fa4f71e6ec5c1d192307f57d06dbabf379102384cd [2021-11-13 02:38:18,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:38:18,357 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:38:18,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:38:18,362 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:38:18,362 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:38:18,364 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/float-newlib/float_req_bl_0530a.c [2021-11-13 02:38:18,439 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/data/cf9f90718/2578d9e333cf4e74b48660d68a0a459d/FLAG03b2160c0 [2021-11-13 02:38:19,012 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:38:19,013 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/sv-benchmarks/c/float-newlib/float_req_bl_0530a.c [2021-11-13 02:38:19,042 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/data/cf9f90718/2578d9e333cf4e74b48660d68a0a459d/FLAG03b2160c0 [2021-11-13 02:38:19,299 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/data/cf9f90718/2578d9e333cf4e74b48660d68a0a459d [2021-11-13 02:38:19,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:38:19,303 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:38:19,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:38:19,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:38:19,323 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:38:19,324 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:38:19" (1/1) ... [2021-11-13 02:38:19,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e3e4baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:19, skipping insertion in model container [2021-11-13 02:38:19,325 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:38:19" (1/1) ... [2021-11-13 02:38:19,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:38:19,408 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:38:19,814 WARN L228 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_6ed59cd9-8b40-4c31-a781-c0225744feb2/sv-benchmarks/c/float-newlib/float_req_bl_0530a.c[15590,15603] [2021-11-13 02:38:19,828 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:38:19,916 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 02:38:20,156 WARN L228 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_6ed59cd9-8b40-4c31-a781-c0225744feb2/sv-benchmarks/c/float-newlib/float_req_bl_0530a.c[15590,15603] [2021-11-13 02:38:20,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:38:20,251 INFO L208 MainTranslator]: Completed translation [2021-11-13 02:38:20,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:20 WrapperNode [2021-11-13 02:38:20,252 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:38:20,253 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 02:38:20,253 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 02:38:20,254 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 02:38:20,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:20" (1/1) ... [2021-11-13 02:38:20,332 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:20" (1/1) ... [2021-11-13 02:38:20,434 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 02:38:20,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 02:38:20,435 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 02:38:20,435 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 02:38:20,446 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:20" (1/1) ... [2021-11-13 02:38:20,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:20" (1/1) ... [2021-11-13 02:38:20,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:20" (1/1) ... [2021-11-13 02:38:20,469 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:20" (1/1) ... [2021-11-13 02:38:20,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:20" (1/1) ... [2021-11-13 02:38:20,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:20" (1/1) ... [2021-11-13 02:38:20,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:20" (1/1) ... [2021-11-13 02:38:20,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 02:38:20,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 02:38:20,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 02:38:20,613 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 02:38:20,614 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:20" (1/1) ... [2021-11-13 02:38:20,622 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:38:20,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:38:20,649 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 02:38:20,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 02:38:20,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 02:38:20,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-13 02:38:20,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 02:38:20,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-11-13 02:38:20,699 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2021-11-13 02:38:20,701 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2021-11-13 02:38:20,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 02:38:20,701 INFO L130 BoogieDeclarations]: Found specification of procedure scalbn_float [2021-11-13 02:38:20,702 INFO L138 BoogieDeclarations]: Found implementation of procedure scalbn_float [2021-11-13 02:38:20,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-11-13 02:38:20,702 INFO L130 BoogieDeclarations]: Found specification of procedure copysign_float [2021-11-13 02:38:20,702 INFO L138 BoogieDeclarations]: Found implementation of procedure copysign_float [2021-11-13 02:38:20,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2021-11-13 02:38:20,703 INFO L130 BoogieDeclarations]: Found specification of procedure __kernel_tanf [2021-11-13 02:38:20,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __kernel_tanf [2021-11-13 02:38:20,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 02:38:20,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 02:38:20,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 02:38:20,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 02:38:59,320 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 02:38:59,321 INFO L299 CfgBuilder]: Removed 65 assume(true) statements. [2021-11-13 02:38:59,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:38:59 BoogieIcfgContainer [2021-11-13 02:38:59,324 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 02:38:59,326 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 02:38:59,326 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 02:38:59,329 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 02:38:59,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:38:19" (1/3) ... [2021-11-13 02:38:59,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b4395cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:38:59, skipping insertion in model container [2021-11-13 02:38:59,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:20" (2/3) ... [2021-11-13 02:38:59,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b4395cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:38:59, skipping insertion in model container [2021-11-13 02:38:59,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:38:59" (3/3) ... [2021-11-13 02:38:59,333 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0530a.c [2021-11-13 02:38:59,339 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 02:38:59,339 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 02:38:59,391 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 02:38:59,398 INFO L339 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=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 02:38:59,398 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 02:38:59,447 INFO L276 IsEmpty]: Start isEmpty. Operand has 247 states, 230 states have (on average 1.6695652173913043) internal successors, (384), 231 states have internal predecessors, (384), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-13 02:38:59,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-13 02:38:59,454 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:59,455 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:59,455 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:38:59,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:59,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1661351645, now seen corresponding path program 1 times [2021-11-13 02:38:59,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:38:59,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [593346256] [2021-11-13 02:38:59,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:59,483 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:38:59,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:38:59,492 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:38:59,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 02:39:00,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:01,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-13 02:39:01,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:01,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:01,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:01,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:01,257 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:39:01,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [593346256] [2021-11-13 02:39:01,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [593346256] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:01,259 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:01,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 02:39:01,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028045629] [2021-11-13 02:39:01,262 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:01,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 02:39:01,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:39:01,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 02:39:01,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 02:39:01,302 INFO L87 Difference]: Start difference. First operand has 247 states, 230 states have (on average 1.6695652173913043) internal successors, (384), 231 states have internal predecessors, (384), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:01,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:01,373 INFO L93 Difference]: Finished difference Result 492 states and 821 transitions. [2021-11-13 02:39:01,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 02:39:01,375 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-13 02:39:01,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:01,390 INFO L225 Difference]: With dead ends: 492 [2021-11-13 02:39:01,390 INFO L226 Difference]: Without dead ends: 244 [2021-11-13 02:39:01,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 02:39:01,416 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.61ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:01,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 4.61ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 02:39:01,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-11-13 02:39:01,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2021-11-13 02:39:01,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 228 states have (on average 1.381578947368421) internal successors, (315), 228 states have internal predecessors, (315), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-13 02:39:01,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 337 transitions. [2021-11-13 02:39:01,582 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 337 transitions. Word has length 10 [2021-11-13 02:39:01,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:01,583 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 337 transitions. [2021-11-13 02:39:01,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:01,583 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 337 transitions. [2021-11-13 02:39:01,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-13 02:39:01,586 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:01,586 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:01,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 02:39:01,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:39:01,793 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:39:01,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:01,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1285007371, now seen corresponding path program 1 times [2021-11-13 02:39:01,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:39:01,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816356989] [2021-11-13 02:39:01,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:01,796 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:39:01,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:39:01,800 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:39:01,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 02:39:03,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:03,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 02:39:03,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:03,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:03,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:04,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:04,196 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:39:04,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816356989] [2021-11-13 02:39:04,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816356989] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:04,197 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:04,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7 [2021-11-13 02:39:04,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81004244] [2021-11-13 02:39:04,198 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:04,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 02:39:04,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:39:04,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 02:39:04,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:39:04,201 INFO L87 Difference]: Start difference. First operand 244 states and 337 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:04,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:04,390 INFO L93 Difference]: Finished difference Result 290 states and 390 transitions. [2021-11-13 02:39:04,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:39:04,391 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-13 02:39:04,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:04,393 INFO L225 Difference]: With dead ends: 290 [2021-11-13 02:39:04,393 INFO L226 Difference]: Without dead ends: 54 [2021-11-13 02:39:04,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:39:04,398 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 16 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.21ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 58.49ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:04,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 208 Invalid, 9 Unknown, 0 Unchecked, 3.21ms Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 2 Unchecked, 58.49ms Time] [2021-11-13 02:39:04,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-13 02:39:04,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-11-13 02:39:04,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.183673469387755) internal successors, (58), 49 states have internal predecessors, (58), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 02:39:04,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2021-11-13 02:39:04,408 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 11 [2021-11-13 02:39:04,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:04,409 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2021-11-13 02:39:04,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:04,410 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2021-11-13 02:39:04,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-13 02:39:04,411 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:04,411 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:04,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 02:39:04,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:39:04,633 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:39:04,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:04,634 INFO L85 PathProgramCache]: Analyzing trace with hash 632012606, now seen corresponding path program 1 times [2021-11-13 02:39:04,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:39:04,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1647206981] [2021-11-13 02:39:04,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:04,636 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:39:04,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:39:04,637 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:39:04,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 02:39:07,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:08,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-13 02:39:08,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:08,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:08,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:10,340 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:39:10,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1647206981] [2021-11-13 02:39:10,342 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [__kernel_tanf_~hx~2] [2021-11-13 02:39:10,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [633993576] [2021-11-13 02:39:10,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:10,342 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:39:10,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:39:10,346 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:39:10,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-13 02:39:12,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:12,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:39:12,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:12,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:12,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:13,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:13,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [633993576] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:13,140 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:13,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 02:39:13,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348509449] [2021-11-13 02:39:13,141 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:13,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:39:13,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:39:13,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:39:13,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:39:13,143 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 02:39:15,429 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 02:39:15,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:15,512 INFO L93 Difference]: Finished difference Result 86 states and 99 transitions. [2021-11-13 02:39:15,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:39:15,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-11-13 02:39:15,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:15,515 INFO L225 Difference]: With dead ends: 86 [2021-11-13 02:39:15,516 INFO L226 Difference]: Without dead ends: 59 [2021-11-13 02:39:15,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:39:15,518 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 22 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2269.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.41ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2360.73ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:15,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 92 Invalid, 12 Unknown, 0 Unchecked, 1.41ms Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 1 Unknown, 0 Unchecked, 2360.73ms Time] [2021-11-13 02:39:15,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-13 02:39:15,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2021-11-13 02:39:15,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 52 states have (on average 1.1730769230769231) internal successors, (61), 52 states have internal predecessors, (61), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 02:39:15,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 65 transitions. [2021-11-13 02:39:15,527 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 65 transitions. Word has length 22 [2021-11-13 02:39:15,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:15,528 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 65 transitions. [2021-11-13 02:39:15,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 02:39:15,528 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 65 transitions. [2021-11-13 02:39:15,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-13 02:39:15,530 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:15,530 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:15,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 02:39:15,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2021-11-13 02:39:15,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 02:39:15,943 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:39:15,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:15,944 INFO L85 PathProgramCache]: Analyzing trace with hash 521946787, now seen corresponding path program 1 times [2021-11-13 02:39:15,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:39:15,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1202805364] [2021-11-13 02:39:15,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:15,946 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:39:15,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:39:15,948 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:39:16,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 02:39:17,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:17,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-13 02:39:17,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:18,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:18,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:20,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:20,463 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:39:20,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1202805364] [2021-11-13 02:39:20,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1202805364] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:20,464 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:20,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 15 [2021-11-13 02:39:20,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355459554] [2021-11-13 02:39:20,464 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:20,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-13 02:39:20,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:39:20,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-13 02:39:20,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-13 02:39:20,466 INFO L87 Difference]: Start difference. First operand 57 states and 65 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 13 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 02:39:23,967 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.69s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:39:25,910 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 02:39:27,473 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 02:39:31,683 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 02:39:33,689 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 02:39:36,894 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 02:39:38,593 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 02:39:40,761 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 02:39:40,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:40,761 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2021-11-13 02:39:40,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 02:39:40,802 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 13 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2021-11-13 02:39:40,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:40,803 INFO L225 Difference]: With dead ends: 77 [2021-11-13 02:39:40,804 INFO L226 Difference]: Without dead ends: 74 [2021-11-13 02:39:40,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2021-11-13 02:39:40,806 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 57 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 8 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18349.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.98ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18872.66ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:40,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 445 Invalid, 140 Unknown, 0 Unchecked, 4.98ms Time], IncrementalHoareTripleChecker [8 Valid, 127 Invalid, 5 Unknown, 0 Unchecked, 18872.66ms Time] [2021-11-13 02:39:40,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-13 02:39:40,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 63. [2021-11-13 02:39:40,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 57 states have (on average 1.1578947368421053) internal successors, (66), 57 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-13 02:39:40,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2021-11-13 02:39:40,825 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 23 [2021-11-13 02:39:40,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:40,826 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2021-11-13 02:39:40,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 13 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 02:39:40,826 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2021-11-13 02:39:40,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-13 02:39:40,828 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:40,828 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:40,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-13 02:39:41,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:39:41,029 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:39:41,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:41,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1202005157, now seen corresponding path program 1 times [2021-11-13 02:39:41,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:39:41,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [476304044] [2021-11-13 02:39:41,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:41,031 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:39:41,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:39:41,032 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:39:41,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 02:39:42,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:43,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 02:39:43,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:43,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:43,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:44,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:44,159 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:39:44,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [476304044] [2021-11-13 02:39:44,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [476304044] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:44,159 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:44,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 02:39:44,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070179366] [2021-11-13 02:39:44,160 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:44,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:39:44,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:39:44,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:39:44,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:39:44,162 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 02:39:45,622 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 02:39:48,004 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 02:39:48,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:48,129 INFO L93 Difference]: Finished difference Result 77 states and 85 transitions. [2021-11-13 02:39:48,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:39:48,130 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-11-13 02:39:48,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:48,131 INFO L225 Difference]: With dead ends: 77 [2021-11-13 02:39:48,131 INFO L226 Difference]: Without dead ends: 44 [2021-11-13 02:39:48,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:39:48,133 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 65 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3737.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.18ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3874.96ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:48,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 97 Invalid, 19 Unknown, 0 Unchecked, 1.18ms Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 1 Unknown, 0 Unchecked, 3874.96ms Time] [2021-11-13 02:39:48,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-11-13 02:39:48,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2021-11-13 02:39:48,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 38 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 02:39:48,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2021-11-13 02:39:48,142 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 23 [2021-11-13 02:39:48,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:48,143 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2021-11-13 02:39:48,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 02:39:48,144 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2021-11-13 02:39:48,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-13 02:39:48,145 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:48,146 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:48,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-13 02:39:48,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:39:48,368 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:39:48,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:48,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1638891403, now seen corresponding path program 1 times [2021-11-13 02:39:48,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:39:48,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [227035045] [2021-11-13 02:39:48,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:48,371 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:39:48,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:39:48,372 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:39:48,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 02:39:51,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:51,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-13 02:39:51,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:52,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:52,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:56,662 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:39:56,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [227035045] [2021-11-13 02:39:56,662 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [__kernel_tanf_~hx~2] [2021-11-13 02:39:56,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [261842380] [2021-11-13 02:39:56,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:56,663 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:39:56,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:39:56,664 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:39:56,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-13 02:40:07,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:08,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-13 02:40:08,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:40:09,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:09,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:40:12,579 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [__kernel_tanf_~hx~2] [2021-11-13 02:40:12,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433762278] [2021-11-13 02:40:12,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:12,580 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:40:12,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:40:12,582 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:40:12,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-13 02:40:13,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:14,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-13 02:40:14,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:40:14,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:14,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:40:16,573 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [__kernel_tanf_~hx~2] [2021-11-13 02:40:16,574 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:16,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-13 02:40:16,574 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-11-13 02:40:16,575 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-11-13 02:40:16,583 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-13 02:40:16,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-13 02:40:16,864 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-13 02:40:17,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-13 02:40:17,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:40:17,206 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-11-13 02:40:17,209 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 02:40:17,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 02:40:17 BoogieIcfgContainer [2021-11-13 02:40:17,242 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-13 02:40:17,243 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 02:40:17,243 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 02:40:17,243 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 02:40:17,244 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:38:59" (3/4) ... [2021-11-13 02:40:17,261 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-13 02:40:17,261 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 02:40:17,262 INFO L158 Benchmark]: Toolchain (without parser) took 117959.14ms. Allocated memory was 67.1MB in the beginning and 86.0MB in the end (delta: 18.9MB). Free memory was 48.5MB in the beginning and 27.1MB in the end (delta: 21.4MB). Peak memory consumption was 38.8MB. Max. memory is 16.1GB. [2021-11-13 02:40:17,263 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 67.1MB. Free memory is still 48.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:40:17,263 INFO L158 Benchmark]: CACSL2BoogieTranslator took 947.82ms. Allocated memory is still 67.1MB. Free memory was 48.4MB in the beginning and 30.0MB in the end (delta: 18.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-13 02:40:17,264 INFO L158 Benchmark]: Boogie Procedure Inliner took 180.57ms. Allocated memory is still 67.1MB. Free memory was 30.0MB in the beginning and 43.8MB in the end (delta: -13.8MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2021-11-13 02:40:17,264 INFO L158 Benchmark]: Boogie Preprocessor took 176.24ms. Allocated memory is still 67.1MB. Free memory was 43.8MB in the beginning and 36.3MB in the end (delta: 7.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 02:40:17,265 INFO L158 Benchmark]: RCFGBuilder took 38712.63ms. Allocated memory was 67.1MB in the beginning and 86.0MB in the end (delta: 18.9MB). Free memory was 36.3MB in the beginning and 38.8MB in the end (delta: -2.5MB). Peak memory consumption was 22.1MB. Max. memory is 16.1GB. [2021-11-13 02:40:17,265 INFO L158 Benchmark]: TraceAbstraction took 77916.24ms. Allocated memory is still 86.0MB. Free memory was 38.3MB in the beginning and 27.1MB in the end (delta: 11.2MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. [2021-11-13 02:40:17,266 INFO L158 Benchmark]: Witness Printer took 18.77ms. Allocated memory is still 86.0MB. Free memory is still 27.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:40:17,268 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 67.1MB. Free memory is still 48.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 947.82ms. Allocated memory is still 67.1MB. Free memory was 48.4MB in the beginning and 30.0MB in the end (delta: 18.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 180.57ms. Allocated memory is still 67.1MB. Free memory was 30.0MB in the beginning and 43.8MB in the end (delta: -13.8MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 176.24ms. Allocated memory is still 67.1MB. Free memory was 43.8MB in the beginning and 36.3MB in the end (delta: 7.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 38712.63ms. Allocated memory was 67.1MB in the beginning and 86.0MB in the end (delta: 18.9MB). Free memory was 36.3MB in the beginning and 38.8MB in the end (delta: -2.5MB). Peak memory consumption was 22.1MB. Max. memory is 16.1GB. * TraceAbstraction took 77916.24ms. Allocated memory is still 86.0MB. Free memory was 38.3MB in the beginning and 27.1MB in the end (delta: 11.2MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. * Witness Printer took 18.77ms. Allocated memory is still 86.0MB. Free memory is still 27.1MB. 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: 629]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L14] static const float huge_floor = 1.0e30; [L79-L81] static const float two25_scalbn = 3.355443200e+07, twom25_scalbn = 2.9802322388e-08, huge_scalbn = 1.0e+30, tiny_scalbn = 1.0e-30; [L149] static const int init_jk_krempio[] = {4, 7, 9}; [L151-L155] static const float PIo2_krempio[] = { 1.5703125000e+00, 4.5776367188e-04, 2.5987625122e-05, 7.5437128544e-08, 6.0026650317e-11, 7.3896444519e-13, 5.3845816694e-15, 5.6378512969e-18, 8.3009228831e-20, 3.2756352257e-22, 6.3331015649e-25, }; [L157-L159] static const float zero_krempio = 0.0, one_krempio = 1.0, two8_krempio = 2.5600000000e+02, twon8_krempio = 3.9062500000e-03; [L334-L352] static const __int32_t two_over_pi_rempio[] = { 0xA2, 0xF9, 0x83, 0x6E, 0x4E, 0x44, 0x15, 0x29, 0xFC, 0x27, 0x57, 0xD1, 0xF5, 0x34, 0xDD, 0xC0, 0xDB, 0x62, 0x95, 0x99, 0x3C, 0x43, 0x90, 0x41, 0xFE, 0x51, 0x63, 0xAB, 0xDE, 0xBB, 0xC5, 0x61, 0xB7, 0x24, 0x6E, 0x3A, 0x42, 0x4D, 0xD2, 0xE0, 0x06, 0x49, 0x2E, 0xEA, 0x09, 0xD1, 0x92, 0x1C, 0xFE, 0x1D, 0xEB, 0x1C, 0xB1, 0x29, 0xA7, 0x3E, 0xE8, 0x82, 0x35, 0xF5, 0x2E, 0xBB, 0x44, 0x84, 0xE9, 0x9C, 0x70, 0x26, 0xB4, 0x5F, 0x7E, 0x41, 0x39, 0x91, 0xD6, 0x39, 0x83, 0x53, 0x39, 0xF4, 0x9C, 0x84, 0x5F, 0x8B, 0xBD, 0xF9, 0x28, 0x3B, 0x1F, 0xF8, 0x97, 0xFF, 0xDE, 0x05, 0x98, 0x0F, 0xEF, 0x2F, 0x11, 0x8B, 0x5A, 0x0A, 0x6D, 0x1F, 0x6D, 0x36, 0x7E, 0xCF, 0x27, 0xCB, 0x09, 0xB7, 0x4F, 0x46, 0x3F, 0x66, 0x9E, 0x5F, 0xEA, 0x2D, 0x75, 0x27, 0xBA, 0xC7, 0xEB, 0xE5, 0xF1, 0x7B, 0x3D, 0x07, 0x39, 0xF7, 0x8A, 0x52, 0x92, 0xEA, 0x6B, 0xFB, 0x5F, 0xB1, 0x1F, 0x8D, 0x5D, 0x08, 0x56, 0x03, 0x30, 0x46, 0xFC, 0x7B, 0x6B, 0xAB, 0xF0, 0xCF, 0xBC, 0x20, 0x9A, 0xF4, 0x36, 0x1D, 0xA9, 0xE3, 0x91, 0x61, 0x5E, 0xE6, 0x1B, 0x08, 0x65, 0x99, 0x85, 0x5F, 0x14, 0xA0, 0x68, 0x40, 0x8D, 0xFF, 0xD8, 0x80, 0x4D, 0x73, 0x27, 0x31, 0x06, 0x06, 0x15, 0x56, 0xCA, 0x73, 0xA8, 0xC9, 0x60, 0xE2, 0x7B, 0xC0, 0x8C, 0x6B, }; [L354-L360] static const __int32_t npio2_hw_rempio[] = { 0x3fc90f00, 0x40490f00, 0x4096cb00, 0x40c90f00, 0x40fb5300, 0x4116cb00, 0x412fed00, 0x41490f00, 0x41623100, 0x417b5300, 0x418a3a00, 0x4196cb00, 0x41a35c00, 0x41afed00, 0x41bc7e00, 0x41c90f00, 0x41d5a000, 0x41e23100, 0x41eec200, 0x41fb5300, 0x4203f200, 0x420a3a00, 0x42108300, 0x4216cb00, 0x421d1400, 0x42235c00, 0x4229a500, 0x422fed00, 0x42363600, 0x423c7e00, 0x4242c700, 0x42490f00}; [L362-L371] static const float zero_rempio = 0.0000000000e+00, half_rempio = 5.0000000000e-01, two8_rempio = 2.5600000000e+02, invpio2_rempio = 6.3661980629e-01, pio2_1_rempio = 1.5707855225e+00, pio2_1t_rempio = 1.0804334124e-05, pio2_2_rempio = 1.0804273188e-05, pio2_2t_rempio = 6.0770999344e-11, pio2_3_rempio = 6.0770943833e-11, pio2_3t_rempio = 6.1232342629e-17; [L491-L499] static const float one_ktan = 1.0000000000e+00, pio4_ktan = 7.8539812565e-01, pio4lo_ktan = 3.7748947079e-08, T_ktan[] = { 3.3333334327e-01, 1.3333334029e-01, 5.3968254477e-02, 2.1869488060e-02, 8.8632395491e-03, 3.5920790397e-03, 1.4562094584e-03, 5.8804126456e-04, 2.4646313977e-04, 7.8179444245e-05, 7.1407252108e-05, -1.8558637748e-05, 2.5907305826e-05, }; [L624] float x = 0.0f; [L625] CALL, EXPR tan_float(x) [L582] float y[2], z = 0.0; [L583] __int32_t n, ix; [L586] ieee_float_shape_type gf_u; [L587] gf_u.value = (x) [L588] EXPR gf_u.word [L588] (ix) = gf_u.word [L591] ix &= 0x7fffffff [L592] COND TRUE ix <= 0x3f490fda [L593] CALL, EXPR __kernel_tanf(x, z, 1) [L502] float z, r, v, w, s; [L503] __int32_t ix, hx; [L505] ieee_float_shape_type gf_u; [L506] gf_u.value = (x) [L507] EXPR gf_u.word [L507] (hx) = gf_u.word [L509] ix = hx & 0x7fffffff [L510] COND FALSE !(ix < 0x31800000) [L518] COND FALSE !(ix >= 0x3f2ca140) [L528] z = x * x [L529] w = z * z [L530] EXPR T_ktan[1] [L531] EXPR T_ktan[3] [L532] EXPR T_ktan[5] [L533] EXPR T_ktan[7] [L533] EXPR T_ktan[9] [L533] EXPR T_ktan[11] [L530-L533] r = T_ktan[1] + w * (T_ktan[3] + w * (T_ktan[5] + w * (T_ktan[7] + w * (T_ktan[9] + w * T_ktan[11])))) [L534] EXPR T_ktan[2] [L535] EXPR T_ktan[4] [L536] EXPR T_ktan[6] [L537] EXPR T_ktan[8] [L537] EXPR T_ktan[10] [L537] EXPR T_ktan[12] [L534-L537] v = z * (T_ktan[2] + w * (T_ktan[4] + w * (T_ktan[6] + w * (T_ktan[8] + w * (T_ktan[10] + w * T_ktan[12]))))) [L538] s = z * x [L539] r = y + z * (s * (r + v) + y) [L540] EXPR T_ktan[0] [L540] r += T_ktan[0] * s [L541] w = x + r [L542] COND FALSE !(ix >= 0x3f2ca140) [L547] COND TRUE iy == 1 [L548] return w; [L593] RET, EXPR __kernel_tanf(x, z, 1) [L593] return __kernel_tanf(x, z, 1); [L593] return __kernel_tanf(x, z, 1); [L625] RET, EXPR tan_float(x) [L625] float res = tan_float(x); [L628] EXPR res == 0.0f && __signbit_float(res) == 0 [L628] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L629] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 247 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 77.8s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 27.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 7 mSolverCounterUnknown, 166 SdHoareTripleChecker+Valid, 25166.84ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 160 mSDsluCounter, 1182 SdHoareTripleChecker+Invalid, 24412.81ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2 IncrementalHoareTripleChecker+Unchecked, 617 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 153 IncrementalHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 565 mSDtfsCounter, 153 mSolverCounterSat, 15.37ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 210 GetRequests, 170 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=247occurred in iteration=0, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 15 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 14.3s SatisfiabilityAnalysisTime, 13.5s InterpolantComputationTime, 134 NumberOfCodeBlocks, 134 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 211 ConstructedInterpolants, 14 QuantifiedInterpolants, 736 SizeOfPredicates, 26 NumberOfNonLiveVariables, 2767 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 [2021-11-13 02:40:17,504 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-11-13 02:40:17,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed59cd9-8b40-4c31-a781-c0225744feb2/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN