./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur --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 a237c0c5e1786112b53bae8b5da7db35eee15483563deacdbe79fcac787d5645 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 00:10:29,139 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:10:29,141 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:10:29,160 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:10:29,161 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:10:29,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:10:29,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:10:29,165 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:10:29,167 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:10:29,168 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:10:29,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:10:29,170 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:10:29,170 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:10:29,172 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:10:29,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:10:29,174 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:10:29,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:10:29,176 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:10:29,178 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:10:29,180 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:10:29,182 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:10:29,184 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:10:29,185 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:10:29,187 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:10:29,191 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:10:29,192 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:10:29,192 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:10:29,193 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:10:29,194 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:10:29,195 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:10:29,196 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:10:29,197 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:10:29,198 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:10:29,199 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:10:29,200 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:10:29,201 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:10:29,202 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:10:29,202 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:10:29,203 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:10:29,204 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:10:29,205 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:10:29,206 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-26 00:10:29,232 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:10:29,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:10:29,233 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:10:29,233 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:10:29,234 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:10:29,235 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:10:29,235 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:10:29,235 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:10:29,236 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:10:29,236 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:10:29,237 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:10:29,237 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:10:29,237 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:10:29,238 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:10:29,238 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:10:29,238 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:10:29,239 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:10:29,239 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:10:29,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:10:29,241 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:10:29,241 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:10:29,241 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:10:29,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:10:29,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:10:29,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:10:29,243 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:10:29,243 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:10:29,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:10:29,244 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:10:29,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:10:29,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:10:29,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:10:29,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:10:29,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:10:29,246 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:10:29,247 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:10:29,247 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:10:29,247 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:10:29,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:10:29,248 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:10:29,248 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:10:29,249 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a237c0c5e1786112b53bae8b5da7db35eee15483563deacdbe79fcac787d5645 [2022-11-26 00:10:29,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:10:29,533 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:10:29,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:10:29,538 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:10:29,538 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:10:29,540 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2022-11-26 00:10:32,629 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:10:32,899 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:10:32,899 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2022-11-26 00:10:32,907 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/data/e7fa69fca/a2db1f93ab344871a323a590908ff7c9/FLAGf218c1efd [2022-11-26 00:10:32,921 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/data/e7fa69fca/a2db1f93ab344871a323a590908ff7c9 [2022-11-26 00:10:32,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:10:32,926 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:10:32,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:10:32,928 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:10:32,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:10:32,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:10:32" (1/1) ... [2022-11-26 00:10:32,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26cb5f23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:10:32, skipping insertion in model container [2022-11-26 00:10:32,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:10:32" (1/1) ... [2022-11-26 00:10:32,945 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:10:32,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:10:33,140 WARN L237 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_87e9b155-b10e-4b5d-95bd-62e286472aa7/sv-benchmarks/c/float-newlib/float_req_bl_1252a.c[1897,1910] [2022-11-26 00:10:33,145 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:10:33,155 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:10:33,179 WARN L237 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_87e9b155-b10e-4b5d-95bd-62e286472aa7/sv-benchmarks/c/float-newlib/float_req_bl_1252a.c[1897,1910] [2022-11-26 00:10:33,180 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:10:33,194 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:10:33,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:10:33 WrapperNode [2022-11-26 00:10:33,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:10:33,195 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:10:33,196 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:10:33,196 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:10:33,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:10:33" (1/1) ... [2022-11-26 00:10:33,213 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:10:33" (1/1) ... [2022-11-26 00:10:33,233 INFO L138 Inliner]: procedures = 17, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 63 [2022-11-26 00:10:33,233 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:10:33,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:10:33,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:10:33,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:10:33,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:10:33" (1/1) ... [2022-11-26 00:10:33,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:10:33" (1/1) ... [2022-11-26 00:10:33,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:10:33" (1/1) ... [2022-11-26 00:10:33,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:10:33" (1/1) ... [2022-11-26 00:10:33,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:10:33" (1/1) ... [2022-11-26 00:10:33,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:10:33" (1/1) ... [2022-11-26 00:10:33,261 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:10:33" (1/1) ... [2022-11-26 00:10:33,262 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:10:33" (1/1) ... [2022-11-26 00:10:33,264 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:10:33,265 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:10:33,265 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:10:33,266 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:10:33,267 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:10:33" (1/1) ... [2022-11-26 00:10:33,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:10:33,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:10:33,302 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:10:33,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:10:33,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:10:33,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:10:33,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:10:33,359 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2022-11-26 00:10:33,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2022-11-26 00:10:33,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-11-26 00:10:33,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:10:33,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:10:33,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-26 00:10:33,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:10:33,441 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:10:33,443 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:10:33,669 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:10:33,833 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:10:33,833 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-26 00:10:33,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:10:33 BoogieIcfgContainer [2022-11-26 00:10:33,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:10:33,839 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:10:33,840 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:10:33,860 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:10:33,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:10:32" (1/3) ... [2022-11-26 00:10:33,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aa05c2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:10:33, skipping insertion in model container [2022-11-26 00:10:33,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:10:33" (2/3) ... [2022-11-26 00:10:33,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aa05c2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:10:33, skipping insertion in model container [2022-11-26 00:10:33,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:10:33" (3/3) ... [2022-11-26 00:10:33,865 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a.c [2022-11-26 00:10:33,902 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:10:33,924 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:10:34,005 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:10:34,015 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@576c9449, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:10:34,015 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:10:34,021 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-26 00:10:34,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-26 00:10:34,032 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:34,033 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:34,034 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:10:34,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:34,041 INFO L85 PathProgramCache]: Analyzing trace with hash -953830544, now seen corresponding path program 1 times [2022-11-26 00:10:34,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:34,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509338838] [2022-11-26 00:10:34,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:34,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:34,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:34,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:34,246 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:34,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509338838] [2022-11-26 00:10:34,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509338838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:34,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:34,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:10:34,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95281953] [2022-11-26 00:10:34,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:34,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-26 00:10:34,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:34,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-26 00:10:34,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-26 00:10:34,297 INFO L87 Difference]: Start difference. First operand has 21 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-11-26 00:10:34,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:34,341 INFO L93 Difference]: Finished difference Result 40 states and 55 transitions. [2022-11-26 00:10:34,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-26 00:10:34,346 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), 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 12 [2022-11-26 00:10:34,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:34,353 INFO L225 Difference]: With dead ends: 40 [2022-11-26 00:10:34,353 INFO L226 Difference]: Without dead ends: 19 [2022-11-26 00:10:34,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-26 00:10:34,360 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:34,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:10:34,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-26 00:10:34,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-26 00:10:34,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-26 00:10:34,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-11-26 00:10:34,429 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2022-11-26 00:10:34,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:34,431 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-11-26 00:10:34,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-11-26 00:10:34,433 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-11-26 00:10:34,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-26 00:10:34,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:34,437 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:34,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:10:34,439 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:10:34,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:34,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1729423715, now seen corresponding path program 1 times [2022-11-26 00:10:34,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:34,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47882384] [2022-11-26 00:10:34,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:34,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:34,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:10:34,521 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 00:10:34,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:10:34,600 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-26 00:10:34,601 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 00:10:34,603 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-26 00:10:34,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 00:10:34,612 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-26 00:10:34,616 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 00:10:34,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:10:34 BoogieIcfgContainer [2022-11-26 00:10:34,642 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 00:10:34,643 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 00:10:34,643 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 00:10:34,643 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 00:10:34,644 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:10:33" (3/4) ... [2022-11-26 00:10:34,647 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-26 00:10:34,647 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 00:10:34,648 INFO L158 Benchmark]: Toolchain (without parser) took 1722.32ms. Allocated memory is still 188.7MB. Free memory was 156.5MB in the beginning and 148.6MB in the end (delta: 7.8MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. [2022-11-26 00:10:34,649 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 134.2MB. Free memory is still 78.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:10:34,649 INFO L158 Benchmark]: CACSL2BoogieTranslator took 267.22ms. Allocated memory is still 188.7MB. Free memory was 156.0MB in the beginning and 145.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-26 00:10:34,650 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.10ms. Allocated memory is still 188.7MB. Free memory was 145.5MB in the beginning and 143.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:10:34,651 INFO L158 Benchmark]: Boogie Preprocessor took 30.39ms. Allocated memory is still 188.7MB. Free memory was 143.8MB in the beginning and 142.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:10:34,651 INFO L158 Benchmark]: RCFGBuilder took 571.14ms. Allocated memory is still 188.7MB. Free memory was 142.3MB in the beginning and 124.5MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-26 00:10:34,652 INFO L158 Benchmark]: TraceAbstraction took 803.13ms. Allocated memory is still 188.7MB. Free memory was 123.5MB in the beginning and 148.6MB in the end (delta: -25.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:10:34,653 INFO L158 Benchmark]: Witness Printer took 4.29ms. Allocated memory is still 188.7MB. Free memory is still 148.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:10:34,656 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 134.2MB. Free memory is still 78.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 267.22ms. Allocated memory is still 188.7MB. Free memory was 156.0MB in the beginning and 145.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.10ms. Allocated memory is still 188.7MB. Free memory was 145.5MB in the beginning and 143.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.39ms. Allocated memory is still 188.7MB. Free memory was 143.8MB in the beginning and 142.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 571.14ms. Allocated memory is still 188.7MB. Free memory was 142.3MB in the beginning and 124.5MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 803.13ms. Allocated memory is still 188.7MB. Free memory was 123.5MB in the beginning and 148.6MB in the end (delta: -25.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.29ms. Allocated memory is still 188.7MB. Free memory is still 148.6MB. 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: 81]: 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 80, overapproximation of someUnaryFLOAToperation at line 74. Possible FailurePath: [L74] float x = -0.0f; [L75] float y = 0.0f; [L77] CALL, EXPR fmax_float(x, y) [L45] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=4286578696] [L22] __uint32_t w; VAL [\old(x)=4286578696, x=4286578696] [L25] ieee_float_shape_type gf_u; [L26] gf_u.value = (x) [L27] EXPR gf_u.word [L27] (w) = gf_u.word [L30] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L32-L33] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L35-L36] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L38] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L41] return 0; [L45] RET, EXPR __fpclassify_float(x) VAL [\old(x)=4286578696, \old(y)=0, __fpclassify_float(x)=0, x=4286578696, y=0] [L45] COND TRUE __fpclassify_float(x) == 0 [L46] return y; VAL [\old(x)=4286578696, \old(y)=0, \result=0, x=4286578696, y=0] [L77] RET, EXPR fmax_float(x, y) [L77] float res = fmax_float(x, y); [L80] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=0, res == 0.0f && __signbit_float(res) == 0=0, x=4286578696, y=0] [L80] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L81] reach_error() VAL [res=0, x=4286578696, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 18 mSDtfsCounter, 5 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 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 [2022-11-26 00:10:34,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur --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 a237c0c5e1786112b53bae8b5da7db35eee15483563deacdbe79fcac787d5645 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 00:10:37,424 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:10:37,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:10:37,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:10:37,460 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:10:37,464 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:10:37,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:10:37,472 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:10:37,475 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:10:37,477 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:10:37,479 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:10:37,480 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:10:37,480 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:10:37,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:10:37,483 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:10:37,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:10:37,485 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:10:37,488 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:10:37,490 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:10:37,495 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:10:37,500 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:10:37,502 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:10:37,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:10:37,506 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:10:37,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:10:37,517 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:10:37,518 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:10:37,519 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:10:37,521 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:10:37,522 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:10:37,525 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:10:37,526 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:10:37,527 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:10:37,529 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:10:37,531 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:10:37,531 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:10:37,532 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:10:37,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:10:37,533 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:10:37,534 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:10:37,535 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:10:37,538 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-26 00:10:37,575 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:10:37,576 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:10:37,577 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:10:37,578 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:10:37,579 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:10:37,579 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:10:37,579 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:10:37,579 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:10:37,580 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:10:37,580 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:10:37,581 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:10:37,581 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:10:37,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:10:37,582 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:10:37,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:10:37,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:10:37,583 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:10:37,583 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:10:37,584 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:10:37,584 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-26 00:10:37,584 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-26 00:10:37,584 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-26 00:10:37,584 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:10:37,585 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:10:37,585 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:10:37,585 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:10:37,585 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:10:37,586 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-26 00:10:37,586 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:10:37,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:10:37,586 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:10:37,586 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:10:37,587 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:10:37,587 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-26 00:10:37,587 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-26 00:10:37,588 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:10:37,588 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:10:37,588 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-26 00:10:37,588 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_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a237c0c5e1786112b53bae8b5da7db35eee15483563deacdbe79fcac787d5645 [2022-11-26 00:10:38,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:10:38,078 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:10:38,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:10:38,083 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:10:38,084 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:10:38,086 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2022-11-26 00:10:41,504 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:10:41,756 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:10:41,757 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2022-11-26 00:10:41,764 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/data/37d78d2d2/c8389288486c436b92639c700c5f634f/FLAGfe7e52de0 [2022-11-26 00:10:41,783 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/data/37d78d2d2/c8389288486c436b92639c700c5f634f [2022-11-26 00:10:41,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:10:41,787 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:10:41,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:10:41,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:10:41,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:10:41,796 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:10:41" (1/1) ... [2022-11-26 00:10:41,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72aa1604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:10:41, skipping insertion in model container [2022-11-26 00:10:41,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:10:41" (1/1) ... [2022-11-26 00:10:41,809 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:10:41,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:10:42,080 WARN L237 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_87e9b155-b10e-4b5d-95bd-62e286472aa7/sv-benchmarks/c/float-newlib/float_req_bl_1252a.c[1897,1910] [2022-11-26 00:10:42,087 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:10:42,109 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:10:42,156 WARN L237 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_87e9b155-b10e-4b5d-95bd-62e286472aa7/sv-benchmarks/c/float-newlib/float_req_bl_1252a.c[1897,1910] [2022-11-26 00:10:42,160 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:10:42,181 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:10:42,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:10:42 WrapperNode [2022-11-26 00:10:42,182 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:10:42,184 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:10:42,184 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:10:42,184 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:10:42,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:10:42" (1/1) ... [2022-11-26 00:10:42,215 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:10:42" (1/1) ... [2022-11-26 00:10:42,241 INFO L138 Inliner]: procedures = 20, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 61 [2022-11-26 00:10:42,242 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:10:42,243 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:10:42,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:10:42,244 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:10:42,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:10:42" (1/1) ... [2022-11-26 00:10:42,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:10:42" (1/1) ... [2022-11-26 00:10:42,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:10:42" (1/1) ... [2022-11-26 00:10:42,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:10:42" (1/1) ... [2022-11-26 00:10:42,283 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:10:42" (1/1) ... [2022-11-26 00:10:42,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:10:42" (1/1) ... [2022-11-26 00:10:42,301 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:10:42" (1/1) ... [2022-11-26 00:10:42,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:10:42" (1/1) ... [2022-11-26 00:10:42,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:10:42,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:10:42,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:10:42,311 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:10:42,312 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:10:42" (1/1) ... [2022-11-26 00:10:42,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:10:42,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:10:42,356 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:10:42,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:10:42,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:10:42,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-26 00:10:42,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:10:42,406 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2022-11-26 00:10:42,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2022-11-26 00:10:42,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-26 00:10:42,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:10:42,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:10:42,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2022-11-26 00:10:42,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:10:42,527 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:10:42,530 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:10:42,810 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:10:42,816 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:10:42,817 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-26 00:10:42,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:10:42 BoogieIcfgContainer [2022-11-26 00:10:42,819 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:10:42,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:10:42,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:10:42,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:10:42,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:10:41" (1/3) ... [2022-11-26 00:10:42,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4505e7ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:10:42, skipping insertion in model container [2022-11-26 00:10:42,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:10:42" (2/3) ... [2022-11-26 00:10:42,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4505e7ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:10:42, skipping insertion in model container [2022-11-26 00:10:42,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:10:42" (3/3) ... [2022-11-26 00:10:42,835 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a.c [2022-11-26 00:10:42,878 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:10:42,879 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:10:42,971 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:10:42,977 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@11a245c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:10:42,978 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:10:42,982 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-26 00:10:42,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-26 00:10:42,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:42,991 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:42,991 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:10:42,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:42,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1229941712, now seen corresponding path program 1 times [2022-11-26 00:10:43,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:10:43,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1454567982] [2022-11-26 00:10:43,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:43,012 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:10:43,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:10:43,018 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:10:43,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-26 00:10:43,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:43,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-26 00:10:43,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:10:43,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:43,158 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:10:43,159 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:10:43,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1454567982] [2022-11-26 00:10:43,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1454567982] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:43,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:43,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:10:43,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054036496] [2022-11-26 00:10:43,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:43,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-26 00:10:43,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:10:43,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-26 00:10:43,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-26 00:10:43,202 INFO L87 Difference]: Start difference. First operand has 27 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2022-11-26 00:10:43,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:43,225 INFO L93 Difference]: Finished difference Result 51 states and 76 transitions. [2022-11-26 00:10:43,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-26 00:10:43,229 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 13 [2022-11-26 00:10:43,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:43,236 INFO L225 Difference]: With dead ends: 51 [2022-11-26 00:10:43,237 INFO L226 Difference]: Without dead ends: 24 [2022-11-26 00:10:43,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-26 00:10:43,243 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:43,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:10:43,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-26 00:10:43,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-26 00:10:43,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-26 00:10:43,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2022-11-26 00:10:43,279 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 13 [2022-11-26 00:10:43,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:43,280 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2022-11-26 00:10:43,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2022-11-26 00:10:43,280 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2022-11-26 00:10:43,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-26 00:10:43,282 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:43,282 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:43,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-26 00:10:43,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:10:43,489 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:10:43,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:43,490 INFO L85 PathProgramCache]: Analyzing trace with hash -2003061117, now seen corresponding path program 1 times [2022-11-26 00:10:43,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:10:43,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1615487551] [2022-11-26 00:10:43,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:43,491 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:10:43,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:10:43,493 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:10:43,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-26 00:10:43,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:43,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 00:10:43,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:10:43,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:43,666 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:10:43,666 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:10:43,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1615487551] [2022-11-26 00:10:43,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1615487551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:43,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:43,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:10:43,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104386835] [2022-11-26 00:10:43,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:43,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:10:43,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:10:43,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:10:43,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:10:43,671 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-11-26 00:10:43,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:43,726 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2022-11-26 00:10:43,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:10:43,727 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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 14 [2022-11-26 00:10:43,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:43,730 INFO L225 Difference]: With dead ends: 36 [2022-11-26 00:10:43,730 INFO L226 Difference]: Without dead ends: 27 [2022-11-26 00:10:43,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:10:43,732 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:43,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:10:43,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-26 00:10:43,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-26 00:10:43,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-26 00:10:43,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2022-11-26 00:10:43,741 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 14 [2022-11-26 00:10:43,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:43,741 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2022-11-26 00:10:43,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-11-26 00:10:43,742 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2022-11-26 00:10:43,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-26 00:10:43,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:43,743 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:43,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-26 00:10:43,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:10:43,956 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:10:43,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:43,957 INFO L85 PathProgramCache]: Analyzing trace with hash 579011981, now seen corresponding path program 1 times [2022-11-26 00:10:43,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:10:43,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560002953] [2022-11-26 00:10:43,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:43,958 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:10:43,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:10:43,959 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:10:43,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-26 00:10:44,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:44,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-26 00:10:44,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:10:44,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:44,274 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:10:44,274 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:10:44,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560002953] [2022-11-26 00:10:44,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [560002953] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:44,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:44,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-26 00:10:44,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257319226] [2022-11-26 00:10:44,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:44,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:10:44,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:10:44,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:10:44,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:10:44,278 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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) [2022-11-26 00:10:44,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:44,588 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2022-11-26 00:10:44,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:10:44,589 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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 15 [2022-11-26 00:10:44,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:44,590 INFO L225 Difference]: With dead ends: 49 [2022-11-26 00:10:44,590 INFO L226 Difference]: Without dead ends: 26 [2022-11-26 00:10:44,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:10:44,592 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 37 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:44,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 62 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:10:44,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-26 00:10:44,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-26 00:10:44,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 22 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-26 00:10:44,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2022-11-26 00:10:44,601 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 15 [2022-11-26 00:10:44,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:44,601 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2022-11-26 00:10:44,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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) [2022-11-26 00:10:44,602 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2022-11-26 00:10:44,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-26 00:10:44,603 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:44,603 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:44,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-11-26 00:10:44,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:10:44,816 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:10:44,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:44,817 INFO L85 PathProgramCache]: Analyzing trace with hash 800680882, now seen corresponding path program 1 times [2022-11-26 00:10:44,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:10:44,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1719530046] [2022-11-26 00:10:44,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:44,818 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:10:44,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:10:44,821 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:10:44,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-26 00:10:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:44,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 00:10:44,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:10:44,933 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-26 00:10:44,934 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:10:44,934 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:10:44,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1719530046] [2022-11-26 00:10:44,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1719530046] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:44,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:44,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:10:44,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806946439] [2022-11-26 00:10:44,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:44,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:10:44,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:10:44,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:10:44,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:10:44,937 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-26 00:10:44,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:44,986 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2022-11-26 00:10:44,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:10:44,987 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-11-26 00:10:44,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:44,988 INFO L225 Difference]: With dead ends: 36 [2022-11-26 00:10:44,988 INFO L226 Difference]: Without dead ends: 27 [2022-11-26 00:10:44,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:10:44,990 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:44,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:10:44,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-26 00:10:44,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-26 00:10:44,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 22 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-26 00:10:44,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2022-11-26 00:10:44,997 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 22 [2022-11-26 00:10:44,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:44,998 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2022-11-26 00:10:44,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-26 00:10:44,999 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2022-11-26 00:10:45,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-26 00:10:45,000 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:45,000 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:45,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-26 00:10:45,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:10:45,206 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:10:45,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:45,211 INFO L85 PathProgramCache]: Analyzing trace with hash 802527924, now seen corresponding path program 1 times [2022-11-26 00:10:45,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:10:45,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1478517788] [2022-11-26 00:10:45,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:45,212 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:10:45,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:10:45,214 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:10:45,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-26 00:10:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:45,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-26 00:10:45,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:10:45,411 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:10:45,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:10:45,412 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:10:45,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1478517788] [2022-11-26 00:10:45,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1478517788] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:45,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:45,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:10:45,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680237149] [2022-11-26 00:10:45,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:45,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:10:45,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:10:45,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:10:45,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:10:45,415 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-26 00:10:45,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:45,529 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-11-26 00:10:45,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:10:45,530 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-11-26 00:10:45,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:45,531 INFO L225 Difference]: With dead ends: 39 [2022-11-26 00:10:45,531 INFO L226 Difference]: Without dead ends: 36 [2022-11-26 00:10:45,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:10:45,533 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 34 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:45,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 80 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:10:45,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-26 00:10:45,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 29. [2022-11-26 00:10:45,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-26 00:10:45,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2022-11-26 00:10:45,540 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 22 [2022-11-26 00:10:45,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:45,541 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2022-11-26 00:10:45,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-26 00:10:45,542 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-11-26 00:10:45,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-26 00:10:45,542 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:45,543 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:45,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-26 00:10:45,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:10:45,770 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:10:45,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:45,771 INFO L85 PathProgramCache]: Analyzing trace with hash -288314810, now seen corresponding path program 1 times [2022-11-26 00:10:45,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:10:45,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [277813484] [2022-11-26 00:10:45,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:45,772 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:10:45,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:10:45,773 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:10:45,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-26 00:10:45,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:45,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-26 00:10:45,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:10:46,041 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:10:46,042 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:10:46,042 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:10:46,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [277813484] [2022-11-26 00:10:46,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [277813484] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:46,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:46,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-26 00:10:46,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619567233] [2022-11-26 00:10:46,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:46,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:10:46,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:10:46,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:10:46,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:10:46,055 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-26 00:10:46,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:46,442 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2022-11-26 00:10:46,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:10:46,445 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2022-11-26 00:10:46,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:46,446 INFO L225 Difference]: With dead ends: 38 [2022-11-26 00:10:46,446 INFO L226 Difference]: Without dead ends: 21 [2022-11-26 00:10:46,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:10:46,447 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 34 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:46,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 58 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:10:46,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-26 00:10:46,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-26 00:10:46,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.0) internal successors, (17), 17 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-26 00:10:46,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2022-11-26 00:10:46,464 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 23 [2022-11-26 00:10:46,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:46,464 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2022-11-26 00:10:46,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-26 00:10:46,470 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2022-11-26 00:10:46,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:46,471 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:46,471 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:46,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-26 00:10:46,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:10:46,672 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:10:46,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:46,673 INFO L85 PathProgramCache]: Analyzing trace with hash 543069769, now seen corresponding path program 1 times [2022-11-26 00:10:46,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:10:46,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [674775537] [2022-11-26 00:10:46,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:46,674 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:10:46,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:10:46,676 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:10:46,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-26 00:10:46,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:46,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-26 00:10:46,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:10:47,063 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:10:47,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:10:47,064 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:10:47,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [674775537] [2022-11-26 00:10:47,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [674775537] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:47,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:47,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-26 00:10:47,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037750083] [2022-11-26 00:10:47,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:47,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:10:47,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:10:47,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:10:47,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:10:47,071 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-26 00:10:47,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:47,271 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2022-11-26 00:10:47,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 00:10:47,272 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2022-11-26 00:10:47,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:47,272 INFO L225 Difference]: With dead ends: 21 [2022-11-26 00:10:47,273 INFO L226 Difference]: Without dead ends: 0 [2022-11-26 00:10:47,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-11-26 00:10:47,274 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 29 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:47,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 77 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:10:47,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-26 00:10:47,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-26 00:10:47,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:47,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-26 00:10:47,275 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2022-11-26 00:10:47,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:47,276 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-26 00:10:47,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-26 00:10:47,276 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-26 00:10:47,276 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-26 00:10:47,279 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-26 00:10:47,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-26 00:10:47,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:10:47,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-26 00:10:47,644 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-26 00:10:47,644 INFO L895 garLoopResultBuilder]: At program point L64(lines 55 65) the Hoare annotation is: (and (= |ULTIMATE.start___signbit_float_~x#1| (_ +zero 8 24)) (= |ULTIMATE.start___signbit_float_#res#1| (_ bv0 32)) (= (fp.neg (_ +zero 8 24)) |ULTIMATE.start_fmax_float_~x#1|) (= |ULTIMATE.start_main_~res~0#1| (_ +zero 8 24)) (= (fp ((_ extract 31 31) |ULTIMATE.start___signbit_float_~w~1#1|) ((_ extract 30 23) |ULTIMATE.start___signbit_float_~w~1#1|) ((_ extract 22 0) |ULTIMATE.start___signbit_float_~w~1#1|)) (_ +zero 8 24)) |ULTIMATE.start_main_#t~short10#1| (= |ULTIMATE.start_fmax_float_#res#1| (_ +zero 8 24)) (= |ULTIMATE.start_fmax_float_~y#1| (_ +zero 8 24))) [2022-11-26 00:10:47,645 INFO L899 garLoopResultBuilder]: For program point L58-1(lines 58 62) no Hoare annotation was computed. [2022-11-26 00:10:47,645 INFO L895 garLoopResultBuilder]: At program point L58-2(lines 58 62) the Hoare annotation is: (and (= |ULTIMATE.start___signbit_float_~x#1| (_ +zero 8 24)) (= (fp.neg (_ +zero 8 24)) |ULTIMATE.start_fmax_float_~x#1|) (= |ULTIMATE.start_main_~res~0#1| (_ +zero 8 24)) |ULTIMATE.start_main_#t~short10#1| (= |ULTIMATE.start_fmax_float_#res#1| (_ +zero 8 24)) (= |ULTIMATE.start_fmax_float_~y#1| (_ +zero 8 24))) [2022-11-26 00:10:47,645 INFO L899 garLoopResultBuilder]: For program point L58-3(lines 58 62) no Hoare annotation was computed. [2022-11-26 00:10:47,645 INFO L902 garLoopResultBuilder]: At program point L85(lines 67 86) the Hoare annotation is: true [2022-11-26 00:10:47,645 INFO L895 garLoopResultBuilder]: At program point L52(lines 44 53) the Hoare annotation is: (and (= (fp.neg (_ +zero 8 24)) |ULTIMATE.start_fmax_float_~x#1|) (= |ULTIMATE.start_fmax_float_#res#1| (_ +zero 8 24)) (= |ULTIMATE.start_fmax_float_~y#1| (_ +zero 8 24))) [2022-11-26 00:10:47,645 INFO L899 garLoopResultBuilder]: For program point L81(line 81) no Hoare annotation was computed. [2022-11-26 00:10:47,645 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-26 00:10:47,646 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-26 00:10:47,646 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-26 00:10:47,646 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 81) no Hoare annotation was computed. [2022-11-26 00:10:47,646 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (and (= (fp.neg (_ +zero 8 24)) |ULTIMATE.start_fmax_float_~x#1|) (= |ULTIMATE.start_fmax_float_~y#1| (_ +zero 8 24))) [2022-11-26 00:10:47,646 INFO L899 garLoopResultBuilder]: For program point L49-1(lines 49 51) no Hoare annotation was computed. [2022-11-26 00:10:47,646 INFO L899 garLoopResultBuilder]: For program point L80(line 80) no Hoare annotation was computed. [2022-11-26 00:10:47,646 INFO L899 garLoopResultBuilder]: For program point L80-2(lines 80 83) no Hoare annotation was computed. [2022-11-26 00:10:47,647 INFO L895 garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: (and (= (fp.neg (_ +zero 8 24)) |ULTIMATE.start_fmax_float_~x#1|) (= |ULTIMATE.start_fmax_float_~y#1| (_ +zero 8 24))) [2022-11-26 00:10:47,647 INFO L899 garLoopResultBuilder]: For program point L45-1(lines 45 47) no Hoare annotation was computed. [2022-11-26 00:10:47,647 INFO L899 garLoopResultBuilder]: For program point __fpclassify_floatFINAL(lines 21 42) no Hoare annotation was computed. [2022-11-26 00:10:47,647 INFO L899 garLoopResultBuilder]: For program point L38(lines 38 41) no Hoare annotation was computed. [2022-11-26 00:10:47,647 INFO L899 garLoopResultBuilder]: For program point L32(lines 32 41) no Hoare annotation was computed. [2022-11-26 00:10:47,647 INFO L899 garLoopResultBuilder]: For program point L24-1(lines 24 28) no Hoare annotation was computed. [2022-11-26 00:10:47,647 INFO L895 garLoopResultBuilder]: At program point L24-2(lines 24 28) the Hoare annotation is: (= |__fpclassify_float_#in~x| __fpclassify_float_~x) [2022-11-26 00:10:47,647 INFO L899 garLoopResultBuilder]: For program point L24-3(lines 21 42) no Hoare annotation was computed. [2022-11-26 00:10:47,647 INFO L902 garLoopResultBuilder]: At program point __fpclassify_floatENTRY(lines 21 42) the Hoare annotation is: true [2022-11-26 00:10:47,648 INFO L899 garLoopResultBuilder]: For program point __fpclassify_floatEXIT(lines 21 42) no Hoare annotation was computed. [2022-11-26 00:10:47,648 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 41) no Hoare annotation was computed. [2022-11-26 00:10:47,651 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:47,654 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 00:10:47,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:10:47 BoogieIcfgContainer [2022-11-26 00:10:47,677 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 00:10:47,678 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 00:10:47,678 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 00:10:47,679 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 00:10:47,679 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:10:42" (3/4) ... [2022-11-26 00:10:47,683 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-26 00:10:47,691 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_float [2022-11-26 00:10:47,697 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-11-26 00:10:47,697 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-11-26 00:10:47,697 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-26 00:10:47,698 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-26 00:10:47,730 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2022-11-26 00:10:47,731 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x && \result == ~Pluszero~LONGDOUBLE()) && y == ~Pluszero~LONGDOUBLE() [2022-11-26 00:10:47,733 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((x == ~Pluszero~LONGDOUBLE() && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && res == ~Pluszero~LONGDOUBLE()) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && \result == ~Pluszero~LONGDOUBLE()) && y == ~Pluszero~LONGDOUBLE() [2022-11-26 00:10:47,733 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((x == ~Pluszero~LONGDOUBLE() && \result == 0bv32) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && res == ~Pluszero~LONGDOUBLE()) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && \result == ~Pluszero~LONGDOUBLE()) && y == ~Pluszero~LONGDOUBLE() [2022-11-26 00:10:47,749 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/witness.graphml [2022-11-26 00:10:47,749 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 00:10:47,750 INFO L158 Benchmark]: Toolchain (without parser) took 5963.32ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 60.1MB in the beginning and 46.6MB in the end (delta: 13.5MB). Peak memory consumption was 32.8MB. Max. memory is 16.1GB. [2022-11-26 00:10:47,750 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 65.0MB. Free memory was 43.9MB in the beginning and 43.9MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:10:47,751 INFO L158 Benchmark]: CACSL2BoogieTranslator took 392.82ms. Allocated memory is still 81.8MB. Free memory was 59.8MB in the beginning and 48.6MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-26 00:10:47,751 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.39ms. Allocated memory is still 81.8MB. Free memory was 48.3MB in the beginning and 46.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:10:47,751 INFO L158 Benchmark]: Boogie Preprocessor took 66.80ms. Allocated memory is still 81.8MB. Free memory was 46.9MB in the beginning and 45.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:10:47,752 INFO L158 Benchmark]: RCFGBuilder took 508.53ms. Allocated memory is still 81.8MB. Free memory was 45.1MB in the beginning and 55.2MB in the end (delta: -10.1MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. [2022-11-26 00:10:47,752 INFO L158 Benchmark]: TraceAbstraction took 4852.66ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 54.3MB in the beginning and 49.3MB in the end (delta: 4.9MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. [2022-11-26 00:10:47,753 INFO L158 Benchmark]: Witness Printer took 71.28ms. Allocated memory is still 98.6MB. Free memory was 49.3MB in the beginning and 46.6MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:10:47,757 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 65.0MB. Free memory was 43.9MB in the beginning and 43.9MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 392.82ms. Allocated memory is still 81.8MB. Free memory was 59.8MB in the beginning and 48.6MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.39ms. Allocated memory is still 81.8MB. Free memory was 48.3MB in the beginning and 46.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.80ms. Allocated memory is still 81.8MB. Free memory was 46.9MB in the beginning and 45.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 508.53ms. Allocated memory is still 81.8MB. Free memory was 45.1MB in the beginning and 55.2MB in the end (delta: -10.1MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. * TraceAbstraction took 4852.66ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 54.3MB in the beginning and 49.3MB in the end (delta: 4.9MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. * Witness Printer took 71.28ms. Allocated memory is still 98.6MB. Free memory was 49.3MB in the beginning and 46.6MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 81]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.7s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 137 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 134 mSDsluCounter, 470 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 303 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 166 IncrementalHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 167 mSDtfsCounter, 166 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 141 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=5, InterpolantAutomatonStates: 36, 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, 7 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 21 NumberOfFragments, 80 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 44 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 128 ConstructedInterpolants, 6 QuantifiedInterpolants, 351 SizeOfPredicates, 34 NumberOfNonLiveVariables, 485 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 24/24 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: ((((((x == ~Pluszero~LONGDOUBLE() && \result == 0bv32) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && res == ~Pluszero~LONGDOUBLE()) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && \result == ~Pluszero~LONGDOUBLE()) && y == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: ((((x == ~Pluszero~LONGDOUBLE() && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && res == ~Pluszero~LONGDOUBLE()) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && \result == ~Pluszero~LONGDOUBLE()) && y == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: (~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x && \result == ~Pluszero~LONGDOUBLE()) && y == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: \old(x) == x RESULT: Ultimate proved your program to be correct! [2022-11-26 00:10:47,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e9b155-b10e-4b5d-95bd-62e286472aa7/bin/utaipan-ByfvJB40ur/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 Writing output log to file Ultimate.log Result: TRUE