./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh --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 bff053df41c1fc922299a13f2dac2a98df2d05e146d51bf11ac9e37ddfefad6a --- 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-2329fc7 [2022-12-14 07:04:34,216 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 07:04:34,218 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 07:04:34,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 07:04:34,232 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 07:04:34,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 07:04:34,234 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 07:04:34,235 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 07:04:34,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 07:04:34,236 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 07:04:34,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 07:04:34,238 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 07:04:34,238 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 07:04:34,239 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 07:04:34,240 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 07:04:34,241 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 07:04:34,241 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 07:04:34,242 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 07:04:34,243 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 07:04:34,244 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 07:04:34,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 07:04:34,246 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 07:04:34,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 07:04:34,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 07:04:34,250 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 07:04:34,250 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 07:04:34,251 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 07:04:34,251 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 07:04:34,252 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 07:04:34,252 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 07:04:34,253 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 07:04:34,253 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 07:04:34,254 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 07:04:34,254 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 07:04:34,255 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 07:04:34,255 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 07:04:34,256 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 07:04:34,256 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 07:04:34,256 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 07:04:34,256 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 07:04:34,257 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 07:04:34,257 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 07:04:34,273 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 07:04:34,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 07:04:34,273 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 07:04:34,274 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 07:04:34,274 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 07:04:34,274 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 07:04:34,274 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 07:04:34,274 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 07:04:34,275 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 07:04:34,275 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 07:04:34,275 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 07:04:34,275 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 07:04:34,275 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 07:04:34,275 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 07:04:34,275 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 07:04:34,275 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 07:04:34,275 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 07:04:34,276 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 07:04:34,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 07:04:34,276 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 07:04:34,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 07:04:34,276 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 07:04:34,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 07:04:34,277 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 07:04:34,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 07:04:34,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 07:04:34,277 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 07:04:34,277 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 07:04:34,277 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 07:04:34,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 07:04:34,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 07:04:34,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 07:04:34,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:04:34,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 07:04:34,278 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 07:04:34,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 07:04:34,278 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 07:04:34,278 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 07:04:34,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 07:04:34,279 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 07:04:34,279 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 07:04:34,279 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_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bff053df41c1fc922299a13f2dac2a98df2d05e146d51bf11ac9e37ddfefad6a [2022-12-14 07:04:34,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 07:04:34,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 07:04:34,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 07:04:34,460 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 07:04:34,461 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 07:04:34,462 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound20.c [2022-12-14 07:04:37,073 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 07:04:37,186 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 07:04:37,186 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound20.c [2022-12-14 07:04:37,191 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/data/7e8ec60ff/205049926a2b43858bd1dc02ce9af4ba/FLAGc134078a0 [2022-12-14 07:04:37,201 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/data/7e8ec60ff/205049926a2b43858bd1dc02ce9af4ba [2022-12-14 07:04:37,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 07:04:37,204 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 07:04:37,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 07:04:37,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 07:04:37,208 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 07:04:37,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:04:37" (1/1) ... [2022-12-14 07:04:37,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5821eb24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:04:37, skipping insertion in model container [2022-12-14 07:04:37,210 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:04:37" (1/1) ... [2022-12-14 07:04:37,216 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 07:04:37,228 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 07:04:37,330 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_9b162587-2b30-4712-9cb2-829eb1504669/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound20.c[712,725] [2022-12-14 07:04:37,340 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:04:37,347 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 07:04:37,356 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_9b162587-2b30-4712-9cb2-829eb1504669/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound20.c[712,725] [2022-12-14 07:04:37,358 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:04:37,368 INFO L208 MainTranslator]: Completed translation [2022-12-14 07:04:37,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:04:37 WrapperNode [2022-12-14 07:04:37,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 07:04:37,369 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 07:04:37,369 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 07:04:37,369 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 07:04:37,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:04:37" (1/1) ... [2022-12-14 07:04:37,381 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:04:37" (1/1) ... [2022-12-14 07:04:37,393 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 33 [2022-12-14 07:04:37,393 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 07:04:37,394 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 07:04:37,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 07:04:37,394 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 07:04:37,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:04:37" (1/1) ... [2022-12-14 07:04:37,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:04:37" (1/1) ... [2022-12-14 07:04:37,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:04:37" (1/1) ... [2022-12-14 07:04:37,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:04:37" (1/1) ... [2022-12-14 07:04:37,404 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:04:37" (1/1) ... [2022-12-14 07:04:37,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:04:37" (1/1) ... [2022-12-14 07:04:37,407 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:04:37" (1/1) ... [2022-12-14 07:04:37,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:04:37" (1/1) ... [2022-12-14 07:04:37,409 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 07:04:37,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 07:04:37,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 07:04:37,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 07:04:37,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:04:37" (1/1) ... [2022-12-14 07:04:37,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:04:37,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:04:37,432 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 07:04:37,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 07:04:37,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 07:04:37,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 07:04:37,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 07:04:37,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 07:04:37,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 07:04:37,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 07:04:37,513 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 07:04:37,514 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 07:04:37,584 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 07:04:37,606 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 07:04:37,607 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 07:04:37,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:04:37 BoogieIcfgContainer [2022-12-14 07:04:37,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 07:04:37,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 07:04:37,611 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 07:04:37,613 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 07:04:37,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 07:04:37" (1/3) ... [2022-12-14 07:04:37,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2287621e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:04:37, skipping insertion in model container [2022-12-14 07:04:37,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:04:37" (2/3) ... [2022-12-14 07:04:37,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2287621e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:04:37, skipping insertion in model container [2022-12-14 07:04:37,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:04:37" (3/3) ... [2022-12-14 07:04:37,615 INFO L112 eAbstractionObserver]: Analyzing ICFG freire1_valuebound20.c [2022-12-14 07:04:37,630 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 07:04:37,631 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 07:04:37,666 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 07:04:37,671 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;@7cb1339a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 07:04:37,671 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 07:04:37,674 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 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) [2022-12-14 07:04:37,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 07:04:37,679 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:04:37,680 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 07:04:37,680 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:04:37,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:04:37,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1843522412, now seen corresponding path program 1 times [2022-12-14 07:04:37,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:04:37,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446849241] [2022-12-14 07:04:37,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:04:37,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:04:37,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 07:04:37,805 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 07:04:37,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 07:04:37,835 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 07:04:37,837 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 07:04:37,838 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 07:04:37,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 07:04:37,845 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 07:04:37,849 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 07:04:37,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 07:04:37 BoogieIcfgContainer [2022-12-14 07:04:37,866 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 07:04:37,866 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 07:04:37,867 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 07:04:37,867 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 07:04:37,867 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:04:37" (3/4) ... [2022-12-14 07:04:37,871 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 07:04:37,871 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 07:04:37,872 INFO L158 Benchmark]: Toolchain (without parser) took 667.28ms. Allocated memory was 123.7MB in the beginning and 178.3MB in the end (delta: 54.5MB). Free memory was 86.3MB in the beginning and 143.6MB in the end (delta: -57.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 07:04:37,872 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 123.7MB. Free memory is still 67.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 07:04:37,873 INFO L158 Benchmark]: CACSL2BoogieTranslator took 163.41ms. Allocated memory is still 123.7MB. Free memory was 86.3MB in the beginning and 75.9MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 07:04:37,873 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.54ms. Allocated memory is still 123.7MB. Free memory was 75.9MB in the beginning and 74.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 07:04:37,874 INFO L158 Benchmark]: Boogie Preprocessor took 14.73ms. Allocated memory is still 123.7MB. Free memory was 74.5MB in the beginning and 73.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 07:04:37,874 INFO L158 Benchmark]: RCFGBuilder took 199.65ms. Allocated memory is still 123.7MB. Free memory was 73.4MB in the beginning and 62.5MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 07:04:37,875 INFO L158 Benchmark]: TraceAbstraction took 254.96ms. Allocated memory was 123.7MB in the beginning and 178.3MB in the end (delta: 54.5MB). Free memory was 62.0MB in the beginning and 143.6MB in the end (delta: -81.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 07:04:37,875 INFO L158 Benchmark]: Witness Printer took 4.48ms. Allocated memory is still 178.3MB. Free memory is still 143.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 07:04:37,878 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 123.7MB. Free memory is still 67.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 163.41ms. Allocated memory is still 123.7MB. Free memory was 86.3MB in the beginning and 75.9MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.54ms. Allocated memory is still 123.7MB. Free memory was 75.9MB in the beginning and 74.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.73ms. Allocated memory is still 123.7MB. Free memory was 74.5MB in the beginning and 73.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 199.65ms. Allocated memory is still 123.7MB. Free memory was 73.4MB in the beginning and 62.5MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 254.96ms. Allocated memory was 123.7MB in the beginning and 178.3MB in the end (delta: 54.5MB). Free memory was 62.0MB in the beginning and 143.6MB in the end (delta: -81.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.48ms. Allocated memory is still 178.3MB. Free memory is still 143.6MB. 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: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 33, overapproximation of someBinaryDOUBLEComparisonOperation at line 28, overapproximation of someBinaryArithmeticDOUBLEoperation at line 29. Possible FailurePath: [L25] int r; [L26] double a, x; [L27] a = __VERIFIER_nondet_double() [L28] CALL assume_abort_if_not(a>=0 && a<=20) [L14] COND FALSE !(!cond) [L28] RET assume_abort_if_not(a>=0 && a<=20) [L29] x = a / 2.0 [L30] r = 0 VAL [r=0] [L32] COND TRUE 1 VAL [r=0] [L33] CALL __VERIFIER_assert((int)(r*r - a - r + 2*x) == 0) VAL [\old(cond)=0] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L19] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 07:04:37,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh --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 bff053df41c1fc922299a13f2dac2a98df2d05e146d51bf11ac9e37ddfefad6a --- 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-2329fc7 [2022-12-14 07:04:39,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 07:04:39,475 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 07:04:39,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 07:04:39,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 07:04:39,499 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 07:04:39,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 07:04:39,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 07:04:39,503 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 07:04:39,504 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 07:04:39,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 07:04:39,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 07:04:39,505 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 07:04:39,507 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 07:04:39,507 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 07:04:39,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 07:04:39,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 07:04:39,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 07:04:39,511 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 07:04:39,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 07:04:39,513 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 07:04:39,515 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 07:04:39,516 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 07:04:39,517 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 07:04:39,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 07:04:39,520 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 07:04:39,520 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 07:04:39,521 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 07:04:39,521 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 07:04:39,522 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 07:04:39,522 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 07:04:39,523 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 07:04:39,524 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 07:04:39,524 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 07:04:39,525 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 07:04:39,525 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 07:04:39,526 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 07:04:39,526 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 07:04:39,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 07:04:39,527 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 07:04:39,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 07:04:39,528 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-12-14 07:04:39,548 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 07:04:39,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 07:04:39,548 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 07:04:39,548 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 07:04:39,549 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 07:04:39,549 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 07:04:39,549 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 07:04:39,549 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 07:04:39,549 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 07:04:39,549 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 07:04:39,550 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 07:04:39,550 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 07:04:39,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 07:04:39,551 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 07:04:39,551 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 07:04:39,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 07:04:39,551 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 07:04:39,551 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 07:04:39,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 07:04:39,551 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 07:04:39,552 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 07:04:39,552 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 07:04:39,552 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 07:04:39,552 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 07:04:39,552 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 07:04:39,553 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 07:04:39,553 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 07:04:39,553 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 07:04:39,553 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 07:04:39,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:04:39,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 07:04:39,554 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 07:04:39,554 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 07:04:39,554 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 07:04:39,554 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 07:04:39,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 07:04:39,554 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 07:04:39,555 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 07:04:39,555 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_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bff053df41c1fc922299a13f2dac2a98df2d05e146d51bf11ac9e37ddfefad6a [2022-12-14 07:04:39,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 07:04:39,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 07:04:39,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 07:04:39,779 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 07:04:39,779 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 07:04:39,780 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound20.c [2022-12-14 07:04:42,354 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 07:04:42,501 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 07:04:42,502 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound20.c [2022-12-14 07:04:42,507 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/data/650039399/517176cad7834d0fb9a9f8ba7a326129/FLAGe091ef864 [2022-12-14 07:04:42,918 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/data/650039399/517176cad7834d0fb9a9f8ba7a326129 [2022-12-14 07:04:42,919 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 07:04:42,920 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 07:04:42,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 07:04:42,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 07:04:42,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 07:04:42,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:04:42" (1/1) ... [2022-12-14 07:04:42,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72596d4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:04:42, skipping insertion in model container [2022-12-14 07:04:42,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:04:42" (1/1) ... [2022-12-14 07:04:42,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 07:04:42,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 07:04:43,061 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_9b162587-2b30-4712-9cb2-829eb1504669/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound20.c[712,725] [2022-12-14 07:04:43,074 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:04:43,086 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 07:04:43,098 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_9b162587-2b30-4712-9cb2-829eb1504669/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound20.c[712,725] [2022-12-14 07:04:43,102 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:04:43,114 INFO L208 MainTranslator]: Completed translation [2022-12-14 07:04:43,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:04:43 WrapperNode [2022-12-14 07:04:43,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 07:04:43,115 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 07:04:43,115 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 07:04:43,115 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 07:04:43,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:04:43" (1/1) ... [2022-12-14 07:04:43,126 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:04:43" (1/1) ... [2022-12-14 07:04:43,137 INFO L138 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2022-12-14 07:04:43,137 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 07:04:43,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 07:04:43,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 07:04:43,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 07:04:43,144 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:04:43" (1/1) ... [2022-12-14 07:04:43,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:04:43" (1/1) ... [2022-12-14 07:04:43,145 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:04:43" (1/1) ... [2022-12-14 07:04:43,146 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:04:43" (1/1) ... [2022-12-14 07:04:43,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:04:43" (1/1) ... [2022-12-14 07:04:43,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:04:43" (1/1) ... [2022-12-14 07:04:43,153 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:04:43" (1/1) ... [2022-12-14 07:04:43,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:04:43" (1/1) ... [2022-12-14 07:04:43,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 07:04:43,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 07:04:43,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 07:04:43,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 07:04:43,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:04:43" (1/1) ... [2022-12-14 07:04:43,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:04:43,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:04:43,178 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 07:04:43,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 07:04:43,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 07:04:43,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 07:04:43,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 07:04:43,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 07:04:43,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 07:04:43,211 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 07:04:43,264 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 07:04:43,266 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 07:04:44,167 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 07:04:44,171 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 07:04:44,171 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 07:04:44,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:04:44 BoogieIcfgContainer [2022-12-14 07:04:44,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 07:04:44,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 07:04:44,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 07:04:44,177 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 07:04:44,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 07:04:42" (1/3) ... [2022-12-14 07:04:44,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24f7709e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:04:44, skipping insertion in model container [2022-12-14 07:04:44,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:04:43" (2/3) ... [2022-12-14 07:04:44,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24f7709e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:04:44, skipping insertion in model container [2022-12-14 07:04:44,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:04:44" (3/3) ... [2022-12-14 07:04:44,179 INFO L112 eAbstractionObserver]: Analyzing ICFG freire1_valuebound20.c [2022-12-14 07:04:44,191 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 07:04:44,191 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 07:04:44,226 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 07:04:44,231 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;@539ad797, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 07:04:44,231 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 07:04:44,234 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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) [2022-12-14 07:04:44,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 07:04:44,238 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:04:44,239 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:04:44,239 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:04:44,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:04:44,243 INFO L85 PathProgramCache]: Analyzing trace with hash -589467074, now seen corresponding path program 1 times [2022-12-14 07:04:44,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:04:44,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [572538433] [2022-12-14 07:04:44,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:04:44,252 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 [2022-12-14 07:04:44,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:04:44,253 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/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) [2022-12-14 07:04:44,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/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 [2022-12-14 07:04:44,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:04:44,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-14 07:04:44,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:04:44,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:04:44,621 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:04:44,622 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 07:04:44,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [572538433] [2022-12-14 07:04:44,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [572538433] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:04:44,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:04:44,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:04:44,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096493255] [2022-12-14 07:04:44,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:04:44,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 07:04:44,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 07:04:44,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 07:04:44,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 07:04:44,648 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:04:44,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:04:44,662 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2022-12-14 07:04:44,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 07:04:44,663 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-14 07:04:44,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:04:44,668 INFO L225 Difference]: With dead ends: 33 [2022-12-14 07:04:44,668 INFO L226 Difference]: Without dead ends: 14 [2022-12-14 07:04:44,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 07:04:44,672 INFO L413 NwaCegarLoop]: 19 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, 19 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 [2022-12-14 07:04:44,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:04:44,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-12-14 07:04:44,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-12-14 07:04:44,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 07:04:44,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-12-14 07:04:44,695 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2022-12-14 07:04:44,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:04:44,696 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-12-14 07:04:44,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:04:44,696 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-12-14 07:04:44,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 07:04:44,696 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:04:44,696 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:04:44,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 07:04:44,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/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 [2022-12-14 07:04:44,899 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:04:44,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:04:44,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1187327748, now seen corresponding path program 1 times [2022-12-14 07:04:44,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:04:44,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1725814608] [2022-12-14 07:04:44,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:04:44,903 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 [2022-12-14 07:04:44,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:04:44,907 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/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) [2022-12-14 07:04:44,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/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 [2022-12-14 07:04:45,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 07:04:45,300 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 07:04:45,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 07:04:45,612 ERROR L245 FreeRefinementEngine]: Caught known exception: Invalid model [2022-12-14 07:04:45,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1953916685] [2022-12-14 07:04:45,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:04:45,612 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 07:04:45,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 07:04:45,613 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 07:04:45,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-12-14 07:04:46,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:04:46,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-14 07:04:46,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:05:13,767 WARN L837 $PredicateComparison]: unable to prove that (or (and (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)) (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse0) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32))) (fp.geq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| .cse0) (fp.leq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven (_ bv20 32))))))) (= |c___VERIFIER_assert_#in~cond| (_ bv1 32))) is different from false [2022-12-14 07:05:29,500 WARN L837 $PredicateComparison]: unable to prove that (or (= (_ bv1 32) c___VERIFIER_assert_~cond) (and (= (_ bv0 32) c___VERIFIER_assert_~cond) (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse0) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32))) (fp.geq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| .cse0) (fp.leq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven (_ bv20 32)))))))) is different from false [2022-12-14 07:05:45,327 WARN L837 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse0) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32))) (fp.geq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| .cse0) (fp.leq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven (_ bv20 32)))))) is different from false [2022-12-14 07:05:47,356 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse0) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32))) (fp.geq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| .cse0) (fp.leq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven (_ bv20 32)))))) is different from true [2022-12-14 07:05:47,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:05:47,356 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:05:47,357 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 07:05:47,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1725814608] [2022-12-14 07:05:47,357 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 07:05:47,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1953916685] [2022-12-14 07:05:47,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1953916685] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:05:47,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:05:47,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 07:05:47,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427186543] [2022-12-14 07:05:47,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:05:47,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 07:05:47,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 07:05:47,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 07:05:47,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=19, Unknown=4, NotChecked=30, Total=72 [2022-12-14 07:05:47,360 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:05:54,994 WARN L233 SmtUtils]: Spent 7.03s on a formula simplification. DAG size of input: 28 DAG size of output: 21 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 07:05:57,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 07:05:59,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 07:06:01,382 WARN L837 $PredicateComparison]: unable to prove that (and (or (and (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)) (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse0) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32))) (fp.geq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| .cse0) (fp.leq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven (_ bv20 32))))))) (= |c___VERIFIER_assert_#in~cond| (_ bv1 32))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-12-14 07:06:03,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 07:06:06,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 07:06:08,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 07:06:08,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:06:08,429 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2022-12-14 07:06:08,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 07:06:08,438 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.0) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-14 07:06:08,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:06:08,438 INFO L225 Difference]: With dead ends: 28 [2022-12-14 07:06:08,439 INFO L226 Difference]: Without dead ends: 24 [2022-12-14 07:06:08,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.4s TimeCoverageRelationStatistics Valid=33, Invalid=34, Unknown=5, NotChecked=60, Total=132 [2022-12-14 07:06:08,440 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 12 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-12-14 07:06:08,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 49 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 5 Unknown, 56 Unchecked, 11.5s Time] [2022-12-14 07:06:08,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-12-14 07:06:08,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2022-12-14 07:06:08,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 07:06:08,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-12-14 07:06:08,445 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 9 [2022-12-14 07:06:08,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:06:08,446 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-12-14 07:06:08,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.0) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:06:08,446 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-12-14 07:06:08,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 07:06:08,447 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:06:08,447 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:06:08,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-12-14 07:06:08,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/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 [2022-12-14 07:06:08,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/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 [2022-12-14 07:06:08,850 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:06:08,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:06:08,852 INFO L85 PathProgramCache]: Analyzing trace with hash -713464030, now seen corresponding path program 1 times [2022-12-14 07:06:08,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:06:08,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [188835898] [2022-12-14 07:06:08,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:06:08,853 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 [2022-12-14 07:06:08,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:06:08,855 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/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) [2022-12-14 07:06:08,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/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 [2022-12-14 07:06:09,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:06:09,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 07:06:09,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:06:15,476 WARN L837 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)) is different from false [2022-12-14 07:06:17,530 WARN L859 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)) is different from true [2022-12-14 07:06:29,901 WARN L837 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2|))) (_ bv0 32))) (= |c___VERIFIER_assert_#in~cond| (_ bv1 32))) is different from false [2022-12-14 07:06:38,159 WARN L837 $PredicateComparison]: unable to prove that (and (= (_ bv1 32) c___VERIFIER_assert_~cond) (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2|))) (_ bv0 32)))) is different from false [2022-12-14 07:06:38,165 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-12-14 07:06:38,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:07:02,945 WARN L233 SmtUtils]: Spent 16.45s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 07:07:19,386 WARN L233 SmtUtils]: Spent 16.44s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 07:07:25,603 WARN L859 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|) ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3|))) (_ bv0 32))) (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)))) is different from true [2022-12-14 07:07:35,972 WARN L859 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|) ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3|))) (_ bv0 32))) (= (_ bv0 32) c___VERIFIER_assert_~cond) (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)))) is different from true [2022-12-14 07:07:35,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-12-14 07:07:35,976 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 07:07:35,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [188835898] [2022-12-14 07:07:35,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [188835898] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:07:35,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1499728757] [2022-12-14 07:07:35,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:07:35,976 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 07:07:35,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 07:07:35,977 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 07:07:35,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2022-12-14 07:07:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:07:36,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 07:07:36,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:07:52,616 WARN L837 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_4| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_4| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_4|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_4|))) (_ bv0 32))) (= |c___VERIFIER_assert_#in~cond| (_ bv1 32))) is different from false [2022-12-14 07:08:00,890 WARN L837 $PredicateComparison]: unable to prove that (and (= (_ bv1 32) c___VERIFIER_assert_~cond) (exists ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_4| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_4| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_4|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_4|))) (_ bv0 32)))) is different from false [2022-12-14 07:08:00,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-12-14 07:08:00,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:08:25,670 WARN L233 SmtUtils]: Spent 16.45s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 07:08:42,155 WARN L233 SmtUtils]: Spent 16.48s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 07:08:48,369 WARN L859 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_5| (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5|) ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_5|))) (_ bv0 32))) (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)))) is different from true [2022-12-14 07:08:58,729 WARN L859 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_5| (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5|) ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_5|))) (_ bv0 32))) (= (_ bv0 32) c___VERIFIER_assert_~cond) (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)))) is different from true [2022-12-14 07:08:58,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-12-14 07:08:58,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1499728757] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:08:58,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40402024] [2022-12-14 07:08:58,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:08:58,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:08:58,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:08:58,734 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:08:58,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 07:08:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:08:58,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 07:08:58,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:09:15,519 WARN L837 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_6| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_6| (_ FloatingPoint 11 53))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_6|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_6|))))) (= |c___VERIFIER_assert_#in~cond| (_ bv1 32))) is different from false [2022-12-14 07:09:23,788 WARN L837 $PredicateComparison]: unable to prove that (and (= (_ bv1 32) c___VERIFIER_assert_~cond) (exists ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_6| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_6| (_ FloatingPoint 11 53))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_6|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_6|)))))) is different from false [2022-12-14 07:09:23,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-12-14 07:09:23,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:09:48,770 WARN L233 SmtUtils]: Spent 16.66s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 07:10:05,422 WARN L233 SmtUtils]: Spent 16.65s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 07:10:11,630 WARN L859 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7| (_ BitVec 32))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7|) ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7|))) (_ bv0 32))) (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)))) is different from true [2022-12-14 07:10:21,984 WARN L859 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7| (_ BitVec 32))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7|) ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7|))) (_ bv0 32))) (= (_ bv0 32) c___VERIFIER_assert_~cond) (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)))) is different from true [2022-12-14 07:10:21,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-12-14 07:10:21,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40402024] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:10:21,988 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 07:10:21,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 18 [2022-12-14 07:10:21,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832339921] [2022-12-14 07:10:21,989 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 07:10:21,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-14 07:10:21,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 07:10:21,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-14 07:10:21,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=25, Unknown=14, NotChecked=234, Total=306 [2022-12-14 07:10:21,992 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 18 states, 18 states have (on average 1.5) internal successors, (27), 15 states have internal predecessors, (27), 2 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 07:10:24,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 07:10:26,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 07:10:28,375 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32))) (.cse1 (= (_ bv0 32) c___VERIFIER_assert_~cond)) (.cse2 (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32))))) (and (= |c___VERIFIER_assert_#in~cond| c___VERIFIER_assert_~cond) (or (forall ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_5| (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5|) ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5|)) (fp.mul c_currentRoundingMode .cse0 |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_5|))) (_ bv0 32))) .cse1 .cse2) (or (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7| (_ BitVec 32))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7|) ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7|)) (fp.mul c_currentRoundingMode .cse0 |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7|))) (_ bv0 32))) .cse1 .cse2) (or (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|) ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) (fp.mul c_currentRoundingMode .cse0 |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3|))) (_ bv0 32))) .cse1 .cse2))) is different from true [2022-12-14 07:10:30,548 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32))) (.cse1 (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32))))) (and (or (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|) ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) (fp.mul c_currentRoundingMode .cse0 |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3|))) (_ bv0 32))) .cse1) (or (forall ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_5| (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5|) ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5|)) (fp.mul c_currentRoundingMode .cse0 |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_5|))) (_ bv0 32))) .cse1) (or (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7| (_ BitVec 32))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7|) ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7|)) (fp.mul c_currentRoundingMode .cse0 |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7|))) (_ bv0 32))) .cse1) .cse1)) is different from true [2022-12-14 07:10:32,725 WARN L837 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_4| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_4| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_4|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_4|))) (_ bv0 32))) (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2|))) (_ bv0 32))) (exists ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_6| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_6| (_ FloatingPoint 11 53))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_6|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_6|))))) (= |c___VERIFIER_assert_#in~cond| (_ bv1 32)) (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)))) is different from false [2022-12-14 07:10:34,914 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32))) (.cse1 (= (_ bv0 32) c___VERIFIER_assert_~cond)) (.cse2 (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32))))) (and (= |c___VERIFIER_assert_#in~cond| c___VERIFIER_assert_~cond) (or (forall ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_5| (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5|) ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5|)) (fp.mul c_currentRoundingMode .cse0 |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_5|))) (_ bv0 32))) .cse1 .cse2) (= (_ bv1 32) c___VERIFIER_assert_~cond) (or (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7| (_ BitVec 32))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7|) ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7|)) (fp.mul c_currentRoundingMode .cse0 |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7|))) (_ bv0 32))) .cse1 .cse2) (not .cse1) (exists ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_4| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_4| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_4|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_4|))) (_ bv0 32))) (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2|))) (_ bv0 32))) (or (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|) ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) (fp.mul c_currentRoundingMode .cse0 |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3|))) (_ bv0 32))) .cse1 .cse2) (exists ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_6| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_6| (_ FloatingPoint 11 53))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_6|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_6|))))))) is different from false [2022-12-14 07:10:37,087 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32))) (.cse1 (= (_ bv0 32) c___VERIFIER_assert_~cond)) (.cse2 (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32))))) (and (= |c___VERIFIER_assert_#in~cond| c___VERIFIER_assert_~cond) (or (forall ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_5| (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5|) ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5|)) (fp.mul c_currentRoundingMode .cse0 |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_5|))) (_ bv0 32))) .cse1 .cse2) (= (_ bv1 32) c___VERIFIER_assert_~cond) (or (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7| (_ BitVec 32))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7|) ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7|)) (fp.mul c_currentRoundingMode .cse0 |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7|))) (_ bv0 32))) .cse1 .cse2) (not .cse1) (exists ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_4| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_4| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_4|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_4|))) (_ bv0 32))) (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2|))) (_ bv0 32))) (or (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|) ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) (fp.mul c_currentRoundingMode .cse0 |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3|))) (_ bv0 32))) .cse1 .cse2) (exists ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_6| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_6| (_ FloatingPoint 11 53))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_6|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_6|))))))) is different from true [2022-12-14 07:10:37,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:10:37,090 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-12-14 07:10:37,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 07:10:37,090 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 15 states have internal predecessors, (27), 2 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 15 [2022-12-14 07:10:37,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:10:37,090 INFO L225 Difference]: With dead ends: 26 [2022-12-14 07:10:37,091 INFO L226 Difference]: Without dead ends: 18 [2022-12-14 07:10:37,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 17 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.8s TimeCoverageRelationStatistics Valid=41, Invalid=28, Unknown=19, NotChecked=374, Total=462 [2022-12-14 07:10:37,092 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:10:37,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 2 Unknown, 82 Unchecked, 4.2s Time] [2022-12-14 07:10:37,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-12-14 07:10:37,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2022-12-14 07:10:37,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 07:10:37,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2022-12-14 07:10:37,095 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 15 [2022-12-14 07:10:37,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:10:37,097 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2022-12-14 07:10:37,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 15 states have internal predecessors, (27), 2 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 07:10:37,097 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2022-12-14 07:10:37,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 07:10:37,097 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:10:37,097 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:10:37,115 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-14 07:10:37,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2022-12-14 07:10:37,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 07:10:37,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:10:37,700 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:10:37,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:10:37,702 INFO L85 PathProgramCache]: Analyzing trace with hash -610823942, now seen corresponding path program 1 times [2022-12-14 07:10:37,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:10:37,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545941704] [2022-12-14 07:10:37,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:10:37,704 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 [2022-12-14 07:10:37,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:10:37,706 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/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) [2022-12-14 07:10:37,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/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 [2022-12-14 07:10:38,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 07:10:38,393 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 07:10:39,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 07:10:39,068 ERROR L245 FreeRefinementEngine]: Caught known exception: Invalid model [2022-12-14 07:10:39,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [356908181] [2022-12-14 07:10:39,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:10:39,069 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 07:10:39,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 07:10:39,070 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 07:10:39,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2022-12-14 07:10:43,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:10:43,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 07:10:43,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:11:15,291 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode (bvadd (_ bv4294967295 32) |c_ULTIMATE.start_main_~r~0#1|)))) (and (fp.leq |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv20 32))) (= (fp.sub c_currentRoundingMode .cse0 .cse1) |c_ULTIMATE.start_main_~x~0#1|) (= (_ bv1 32) |c_ULTIMATE.start_main_~r~0#1|) (fp.gt .cse0 .cse1) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2022-12-14 07:11:55,689 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv1 32))) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32))) (.cse4 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv20 32))) (.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (.cse5 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (or (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9| (_ FloatingPoint 11 53))) (let ((.cse2 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9| .cse5))) (and (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9|) .cse0) (fp.mul roundNearestTiesToEven .cse1 (fp.sub roundNearestTiesToEven .cse2 .cse3)))) (_ bv0 32))) (fp.leq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9| .cse4) (fp.gt .cse2 .cse3)))) (= |c___VERIFIER_assert_#in~cond| (_ bv0 32))) (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9| (_ FloatingPoint 11 53))) (let ((.cse6 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9| .cse5))) (and (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9|) .cse0) (fp.mul roundNearestTiesToEven .cse1 (fp.sub roundNearestTiesToEven .cse6 .cse3)))) (_ bv0 32)) (fp.leq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9| .cse4) (fp.gt .cse6 .cse3)))) (= |c___VERIFIER_assert_#in~cond| (_ bv1 32))))) is different from false [2022-12-14 07:12:27,261 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv1 32))) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32))) (.cse4 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv20 32))) (.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (.cse5 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (or (and (= (_ bv1 32) c___VERIFIER_assert_~cond) (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9| (_ FloatingPoint 11 53))) (let ((.cse2 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9| .cse5))) (and (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9|) .cse0) (fp.mul roundNearestTiesToEven .cse1 (fp.sub roundNearestTiesToEven .cse2 .cse3)))) (_ bv0 32)) (fp.leq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9| .cse4) (fp.gt .cse2 .cse3))))) (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9| (_ FloatingPoint 11 53))) (let ((.cse6 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9| .cse5))) (and (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9|) .cse0) (fp.mul roundNearestTiesToEven .cse1 (fp.sub roundNearestTiesToEven .cse6 .cse3)))) (_ bv0 32))) (fp.leq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9| .cse4) (fp.gt .cse6 .cse3)))) (= (_ bv0 32) c___VERIFIER_assert_~cond)))) is different from false [2022-12-14 07:12:43,341 WARN L837 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9| (_ FloatingPoint 11 53))) (let ((.cse1 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv1 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9|) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.sub roundNearestTiesToEven .cse1 .cse2)))) (_ bv0 32))) (fp.leq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9| ((_ to_fp 11 53) roundNearestTiesToEven (_ bv20 32))) (fp.gt .cse1 .cse2)))) is different from false [2022-12-14 07:12:45,392 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9| (_ FloatingPoint 11 53))) (let ((.cse1 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv1 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9|) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.sub roundNearestTiesToEven .cse1 .cse2)))) (_ bv0 32))) (fp.leq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9| ((_ to_fp 11 53) roundNearestTiesToEven (_ bv20 32))) (fp.gt .cse1 .cse2)))) is different from true [2022-12-14 07:12:45,393 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-12-14 07:12:45,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:12:51,994 WARN L837 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)) is different from false [2022-12-14 07:12:54,060 WARN L859 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)) is different from true [2022-12-14 07:13:08,830 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|))) (or (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 (bvadd (_ bv1 32) |c_ULTIMATE.start_main_~r~0#1|))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul .cse0 .cse0)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode .cse0))) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse1)))) (_ bv0 32)) (not (fp.gt |c_ULTIMATE.start_main_~x~0#1| .cse1)))) is different from false [2022-12-14 07:13:10,919 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|))) (or (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 (bvadd (_ bv1 32) |c_ULTIMATE.start_main_~r~0#1|))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul .cse0 .cse0)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode .cse0))) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse1)))) (_ bv0 32)) (not (fp.gt |c_ULTIMATE.start_main_~x~0#1| .cse1)))) is different from true [2022-12-14 07:13:38,429 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (or (not (fp.gt .cse0 .cse1)) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse2 |c_ULTIMATE.start_main_~a~0#1|) .cse2)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.sub c_currentRoundingMode .cse0 .cse1))))))) is different from false [2022-12-14 07:13:40,496 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (or (not (fp.gt .cse0 .cse1)) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse2 |c_ULTIMATE.start_main_~a~0#1|) .cse2)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.sub c_currentRoundingMode .cse0 .cse1))))))) is different from true [2022-12-14 07:13:55,217 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (or (not (fp.gt .cse0 .cse1)) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse2 |c_ULTIMATE.start_main_~a~0#1|) .cse2)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.sub c_currentRoundingMode .cse0 .cse1))))) (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32)))) is different from false [2022-12-14 07:13:57,290 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (or (not (fp.gt .cse0 .cse1)) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse2 |c_ULTIMATE.start_main_~a~0#1|) .cse2)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.sub c_currentRoundingMode .cse0 .cse1))))) (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32)))) is different from true [2022-12-14 07:14:13,791 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~a~0#1_15| (_ FloatingPoint 11 53))) (let ((.cse1 (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~a~0#1_15| ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (or (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 |v_ULTIMATE.start_main_~a~0#1_15|) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.sub c_currentRoundingMode .cse1 .cse2)))) (_ bv0 32)) (not (fp.gt .cse1 .cse2)) (not (fp.leq |v_ULTIMATE.start_main_~a~0#1_15| ((_ to_fp 11 53) c_currentRoundingMode (_ bv20 32))))))) is different from false [2022-12-14 07:14:15,865 WARN L859 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~a~0#1_15| (_ FloatingPoint 11 53))) (let ((.cse1 (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~a~0#1_15| ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (or (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 |v_ULTIMATE.start_main_~a~0#1_15|) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.sub c_currentRoundingMode .cse1 .cse2)))) (_ bv0 32)) (not (fp.gt .cse1 .cse2)) (not (fp.leq |v_ULTIMATE.start_main_~a~0#1_15| ((_ to_fp 11 53) c_currentRoundingMode (_ bv20 32))))))) is different from true [2022-12-14 07:14:15,865 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-12-14 07:14:15,866 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 07:14:15,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545941704] [2022-12-14 07:14:15,866 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 07:14:15,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [356908181] [2022-12-14 07:14:15,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [356908181] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:14:15,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821785504] [2022-12-14 07:14:15,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:14:15,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:14:15,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:14:15,868 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:14:15,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b162587-2b30-4712-9cb2-829eb1504669/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process