./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/arctan_Pade.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/arctan_Pade.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0 --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 03d4f02c4d6708ec7407dd5809f77bd3b86d46b08411c69d0afecaf50bc68872 --- 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-e04fb08 [2022-11-16 16:19:32,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 16:19:32,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 16:19:32,965 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 16:19:32,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 16:19:32,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 16:19:32,971 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 16:19:32,973 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 16:19:32,975 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 16:19:32,976 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 16:19:32,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 16:19:32,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 16:19:32,979 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 16:19:32,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 16:19:32,981 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 16:19:32,991 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 16:19:32,993 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 16:19:32,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 16:19:33,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 16:19:33,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 16:19:33,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 16:19:33,012 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 16:19:33,013 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 16:19:33,014 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 16:19:33,018 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 16:19:33,018 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 16:19:33,018 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 16:19:33,019 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 16:19:33,020 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 16:19:33,021 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 16:19:33,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 16:19:33,022 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 16:19:33,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 16:19:33,032 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 16:19:33,033 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 16:19:33,033 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 16:19:33,034 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 16:19:33,035 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 16:19:33,035 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 16:19:33,036 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 16:19:33,037 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 16:19:33,039 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 16:19:33,082 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 16:19:33,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 16:19:33,088 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 16:19:33,088 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 16:19:33,089 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 16:19:33,089 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 16:19:33,089 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 16:19:33,089 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 16:19:33,090 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 16:19:33,090 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 16:19:33,091 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 16:19:33,091 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 16:19:33,092 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 16:19:33,092 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 16:19:33,092 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 16:19:33,092 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 16:19:33,092 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 16:19:33,093 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 16:19:33,093 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 16:19:33,094 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 16:19:33,094 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 16:19:33,094 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 16:19:33,094 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 16:19:33,096 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 16:19:33,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 16:19:33,096 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 16:19:33,097 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 16:19:33,097 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 16:19:33,097 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 16:19:33,097 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 16:19:33,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 16:19:33,098 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 16:19:33,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:19:33,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 16:19:33,099 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 16:19:33,100 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 16:19:33,100 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 16:19:33,100 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 16:19:33,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 16:19:33,100 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 16:19:33,101 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 16:19:33,101 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_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03d4f02c4d6708ec7407dd5809f77bd3b86d46b08411c69d0afecaf50bc68872 [2022-11-16 16:19:33,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 16:19:33,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 16:19:33,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 16:19:33,459 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 16:19:33,460 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 16:19:33,461 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/float-benchs/arctan_Pade.c [2022-11-16 16:19:33,527 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/data/14d82f422/dbee21d1e9e64fe4a95e3799437f2576/FLAG4d2f08fd8 [2022-11-16 16:19:33,964 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 16:19:33,965 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/sv-benchmarks/c/float-benchs/arctan_Pade.c [2022-11-16 16:19:33,972 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/data/14d82f422/dbee21d1e9e64fe4a95e3799437f2576/FLAG4d2f08fd8 [2022-11-16 16:19:33,999 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/data/14d82f422/dbee21d1e9e64fe4a95e3799437f2576 [2022-11-16 16:19:34,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 16:19:34,005 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 16:19:34,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 16:19:34,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 16:19:34,019 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 16:19:34,020 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:19:34" (1/1) ... [2022-11-16 16:19:34,021 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@783bf452 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:34, skipping insertion in model container [2022-11-16 16:19:34,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:19:34" (1/1) ... [2022-11-16 16:19:34,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 16:19:34,048 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 16:19:34,294 WARN L229 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_301323dc-b09c-4140-a1db-90b235cfa564/sv-benchmarks/c/float-benchs/arctan_Pade.c[665,678] [2022-11-16 16:19:34,316 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:19:34,327 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 16:19:34,340 WARN L229 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_301323dc-b09c-4140-a1db-90b235cfa564/sv-benchmarks/c/float-benchs/arctan_Pade.c[665,678] [2022-11-16 16:19:34,346 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:19:34,360 INFO L208 MainTranslator]: Completed translation [2022-11-16 16:19:34,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:34 WrapperNode [2022-11-16 16:19:34,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 16:19:34,362 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 16:19:34,362 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 16:19:34,363 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 16:19:34,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:34" (1/1) ... [2022-11-16 16:19:34,378 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:34" (1/1) ... [2022-11-16 16:19:34,402 INFO L138 Inliner]: procedures = 18, calls = 15, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 50 [2022-11-16 16:19:34,403 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 16:19:34,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 16:19:34,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 16:19:34,405 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 16:19:34,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:34" (1/1) ... [2022-11-16 16:19:34,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:34" (1/1) ... [2022-11-16 16:19:34,426 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:34" (1/1) ... [2022-11-16 16:19:34,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:34" (1/1) ... [2022-11-16 16:19:34,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:34" (1/1) ... [2022-11-16 16:19:34,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:34" (1/1) ... [2022-11-16 16:19:34,442 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:34" (1/1) ... [2022-11-16 16:19:34,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:34" (1/1) ... [2022-11-16 16:19:34,445 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 16:19:34,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 16:19:34,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 16:19:34,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 16:19:34,454 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:34" (1/1) ... [2022-11-16 16:19:34,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:19:34,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:19:34,490 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 16:19:34,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 16:19:34,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 16:19:34,542 INFO L130 BoogieDeclarations]: Found specification of procedure ARCTAN_POS [2022-11-16 16:19:34,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ARCTAN_POS [2022-11-16 16:19:34,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 16:19:34,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 16:19:34,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 16:19:34,543 INFO L130 BoogieDeclarations]: Found specification of procedure ARCTAN_0_1 [2022-11-16 16:19:34,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ARCTAN_0_1 [2022-11-16 16:19:34,631 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 16:19:34,633 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 16:19:34,825 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 16:19:34,909 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 16:19:34,909 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 16:19:34,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:19:34 BoogieIcfgContainer [2022-11-16 16:19:34,912 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 16:19:34,914 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 16:19:34,914 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 16:19:34,918 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 16:19:34,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:19:34" (1/3) ... [2022-11-16 16:19:34,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e187a15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:19:34, skipping insertion in model container [2022-11-16 16:19:34,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:34" (2/3) ... [2022-11-16 16:19:34,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e187a15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:19:34, skipping insertion in model container [2022-11-16 16:19:34,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:19:34" (3/3) ... [2022-11-16 16:19:34,922 INFO L112 eAbstractionObserver]: Analyzing ICFG arctan_Pade.c [2022-11-16 16:19:34,942 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 16:19:34,942 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 16:19:35,018 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 16:19:35,027 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;@b6eed4d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 16:19:35,028 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 16:19:35,032 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 16:19:35,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 16:19:35,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:19:35,045 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:19:35,046 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:19:35,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:19:35,053 INFO L85 PathProgramCache]: Analyzing trace with hash -943177368, now seen corresponding path program 1 times [2022-11-16 16:19:35,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:19:35,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670443046] [2022-11-16 16:19:35,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:19:35,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:19:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 16:19:35,212 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 16:19:35,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 16:19:35,279 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-16 16:19:35,281 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 16:19:35,282 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 16:19:35,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 16:19:35,289 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-16 16:19:35,294 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 16:19:35,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 04:19:35 BoogieIcfgContainer [2022-11-16 16:19:35,331 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 16:19:35,333 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 16:19:35,333 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 16:19:35,334 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 16:19:35,335 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:19:34" (3/4) ... [2022-11-16 16:19:35,340 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 16:19:35,341 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 16:19:35,342 INFO L158 Benchmark]: Toolchain (without parser) took 1336.86ms. Allocated memory is still 102.8MB. Free memory was 68.5MB in the beginning and 49.1MB in the end (delta: 19.3MB). Peak memory consumption was 18.2MB. Max. memory is 16.1GB. [2022-11-16 16:19:35,343 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 102.8MB. Free memory is still 85.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 16:19:35,344 INFO L158 Benchmark]: CACSL2BoogieTranslator took 346.34ms. Allocated memory is still 102.8MB. Free memory was 68.2MB in the beginning and 79.6MB in the end (delta: -11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 16:19:35,345 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.39ms. Allocated memory is still 102.8MB. Free memory was 79.6MB in the beginning and 78.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 16:19:35,346 INFO L158 Benchmark]: Boogie Preprocessor took 46.85ms. Allocated memory is still 102.8MB. Free memory was 78.1MB in the beginning and 76.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 16:19:35,351 INFO L158 Benchmark]: RCFGBuilder took 460.27ms. Allocated memory is still 102.8MB. Free memory was 76.8MB in the beginning and 64.9MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 16:19:35,352 INFO L158 Benchmark]: TraceAbstraction took 416.62ms. Allocated memory is still 102.8MB. Free memory was 64.2MB in the beginning and 49.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-16 16:19:35,354 INFO L158 Benchmark]: Witness Printer took 8.06ms. Allocated memory is still 102.8MB. Free memory was 49.5MB in the beginning and 49.1MB in the end (delta: 359.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 16:19:35,362 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 102.8MB. Free memory is still 85.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 346.34ms. Allocated memory is still 102.8MB. Free memory was 68.2MB in the beginning and 79.6MB in the end (delta: -11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.39ms. Allocated memory is still 102.8MB. Free memory was 79.6MB in the beginning and 78.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.85ms. Allocated memory is still 102.8MB. Free memory was 78.1MB in the beginning and 76.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 460.27ms. Allocated memory is still 102.8MB. Free memory was 76.8MB in the beginning and 64.9MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 416.62ms. Allocated memory is still 102.8MB. Free memory was 64.2MB in the beginning and 49.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 8.06ms. Allocated memory is still 102.8MB. Free memory was 49.5MB in the beginning and 49.1MB in the end (delta: 359.5kB). 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: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 54, overapproximation of someBinaryArithmeticDOUBLEoperation at line 35. Possible FailurePath: [L20] const double Pi=3.141592653589793238; [L47] double a, r; [L49] a = __VERIFIER_nondet_double() [L50] CALL assume_abort_if_not(a >= -1.79e308 && a <= 1.79e308) [L15] COND FALSE !(!cond) [L50] RET assume_abort_if_not(a >= -1.79e308 && a <= 1.79e308) [L52] CALL, EXPR ARCTAN(a) [L41] COND FALSE !(x < 0) VAL [\old(x)=53, Pi=1570796326794896619/500000000000000000, x=53] [L42] CALL, EXPR ARCTAN_POS(x) VAL [\old(x)=53, Pi=1570796326794896619/500000000000000000] [L35] COND TRUE x > 1. VAL [\old(x)=53, Pi=1570796326794896619/500000000000000000, x=53] [L35] CALL, EXPR ARCTAN_0_1(1. / x) VAL [Pi=1570796326794896619/500000000000000000] [L30] CALL, EXPR PADE_2_2(x) [L24] double x_2 = x*x; [L25] return 1. - x_2 / (3. + 9./5.*x_2); [L30] RET, EXPR PADE_2_2(x) [L30] return x*PADE_2_2(x); [L35] RET, EXPR ARCTAN_0_1(1. / x) VAL [\old(x)=53, ARCTAN_0_1(1. / x)=52, Pi=1570796326794896619/500000000000000000, x=53] [L35] return Pi / 2. - ARCTAN_0_1(1. / x); [L42] RET, EXPR ARCTAN_POS(x) VAL [\old(x)=53, ARCTAN_POS(x)=54, Pi=1570796326794896619/500000000000000000, x=53] [L42] return ARCTAN_POS(x); [L52] RET, EXPR ARCTAN(a) [L52] r = ARCTAN(a) [L54] CALL __VERIFIER_assert(r >= -1.571 && r <= 1.571) [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, Pi=1570796326794896619/500000000000000000] [L17] reach_error() VAL [\old(cond)=0, cond=0, Pi=1570796326794896619/500000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, 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=22occurred 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, 15 NumberOfCodeBlocks, 15 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 [2022-11-16 16:19:35,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/arctan_Pade.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0 --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 03d4f02c4d6708ec7407dd5809f77bd3b86d46b08411c69d0afecaf50bc68872 --- 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-e04fb08 [2022-11-16 16:19:37,703 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 16:19:37,705 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 16:19:37,726 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 16:19:37,727 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 16:19:37,728 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 16:19:37,729 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 16:19:37,731 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 16:19:37,733 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 16:19:37,734 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 16:19:37,735 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 16:19:37,736 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 16:19:37,736 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 16:19:37,737 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 16:19:37,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 16:19:37,740 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 16:19:37,741 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 16:19:37,742 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 16:19:37,743 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 16:19:37,745 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 16:19:37,747 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 16:19:37,748 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 16:19:37,749 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 16:19:37,750 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 16:19:37,777 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 16:19:37,781 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 16:19:37,781 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 16:19:37,785 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 16:19:37,786 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 16:19:37,788 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 16:19:37,788 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 16:19:37,789 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 16:19:37,790 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 16:19:37,792 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 16:19:37,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 16:19:37,794 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 16:19:37,796 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 16:19:37,796 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 16:19:37,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 16:19:37,799 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 16:19:37,799 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 16:19:37,805 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-16 16:19:37,849 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 16:19:37,849 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 16:19:37,851 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 16:19:37,851 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 16:19:37,852 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 16:19:37,853 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 16:19:37,853 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 16:19:37,853 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 16:19:37,854 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 16:19:37,854 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 16:19:37,855 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 16:19:37,855 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 16:19:37,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 16:19:37,857 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 16:19:37,858 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 16:19:37,858 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 16:19:37,858 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 16:19:37,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 16:19:37,859 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 16:19:37,859 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 16:19:37,859 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 16:19:37,860 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 16:19:37,860 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 16:19:37,860 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 16:19:37,860 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 16:19:37,861 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 16:19:37,861 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 16:19:37,862 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 16:19:37,862 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 16:19:37,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:19:37,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 16:19:37,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 16:19:37,863 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 16:19:37,864 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-16 16:19:37,864 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 16:19:37,864 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 16:19:37,865 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 16:19:37,865 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 16:19:37,865 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_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03d4f02c4d6708ec7407dd5809f77bd3b86d46b08411c69d0afecaf50bc68872 [2022-11-16 16:19:38,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 16:19:38,340 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 16:19:38,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 16:19:38,344 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 16:19:38,345 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 16:19:38,348 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/float-benchs/arctan_Pade.c [2022-11-16 16:19:38,429 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/data/f2caba54d/b2099b4029424b678e01ead33118c95a/FLAG2c1a6905c [2022-11-16 16:19:38,930 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 16:19:38,931 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/sv-benchmarks/c/float-benchs/arctan_Pade.c [2022-11-16 16:19:38,939 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/data/f2caba54d/b2099b4029424b678e01ead33118c95a/FLAG2c1a6905c [2022-11-16 16:19:39,279 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/data/f2caba54d/b2099b4029424b678e01ead33118c95a [2022-11-16 16:19:39,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 16:19:39,287 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 16:19:39,288 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 16:19:39,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 16:19:39,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 16:19:39,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:19:39" (1/1) ... [2022-11-16 16:19:39,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1da59e10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:39, skipping insertion in model container [2022-11-16 16:19:39,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:19:39" (1/1) ... [2022-11-16 16:19:39,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 16:19:39,322 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 16:19:39,500 WARN L229 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_301323dc-b09c-4140-a1db-90b235cfa564/sv-benchmarks/c/float-benchs/arctan_Pade.c[665,678] [2022-11-16 16:19:39,514 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:19:39,527 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 16:19:39,546 WARN L229 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_301323dc-b09c-4140-a1db-90b235cfa564/sv-benchmarks/c/float-benchs/arctan_Pade.c[665,678] [2022-11-16 16:19:39,552 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:19:39,566 INFO L208 MainTranslator]: Completed translation [2022-11-16 16:19:39,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:39 WrapperNode [2022-11-16 16:19:39,567 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 16:19:39,568 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 16:19:39,568 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 16:19:39,569 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 16:19:39,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:39" (1/1) ... [2022-11-16 16:19:39,617 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:39" (1/1) ... [2022-11-16 16:19:39,643 INFO L138 Inliner]: procedures = 19, calls = 15, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 51 [2022-11-16 16:19:39,644 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 16:19:39,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 16:19:39,645 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 16:19:39,645 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 16:19:39,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:39" (1/1) ... [2022-11-16 16:19:39,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:39" (1/1) ... [2022-11-16 16:19:39,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:39" (1/1) ... [2022-11-16 16:19:39,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:39" (1/1) ... [2022-11-16 16:19:39,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:39" (1/1) ... [2022-11-16 16:19:39,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:39" (1/1) ... [2022-11-16 16:19:39,698 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:39" (1/1) ... [2022-11-16 16:19:39,700 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:39" (1/1) ... [2022-11-16 16:19:39,702 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 16:19:39,703 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 16:19:39,709 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 16:19:39,709 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 16:19:39,710 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:39" (1/1) ... [2022-11-16 16:19:39,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:19:39,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:19:39,744 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 16:19:39,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 16:19:39,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 16:19:39,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 16:19:39,805 INFO L130 BoogieDeclarations]: Found specification of procedure ARCTAN_POS [2022-11-16 16:19:39,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ARCTAN_POS [2022-11-16 16:19:39,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 16:19:39,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 16:19:39,806 INFO L130 BoogieDeclarations]: Found specification of procedure ARCTAN_0_1 [2022-11-16 16:19:39,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ARCTAN_0_1 [2022-11-16 16:19:39,905 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 16:19:39,908 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 16:19:46,464 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 16:19:46,471 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 16:19:46,471 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 16:19:46,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:19:46 BoogieIcfgContainer [2022-11-16 16:19:46,473 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 16:19:46,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 16:19:46,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 16:19:46,479 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 16:19:46,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:19:39" (1/3) ... [2022-11-16 16:19:46,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13f84efb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:19:46, skipping insertion in model container [2022-11-16 16:19:46,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:39" (2/3) ... [2022-11-16 16:19:46,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13f84efb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:19:46, skipping insertion in model container [2022-11-16 16:19:46,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:19:46" (3/3) ... [2022-11-16 16:19:46,482 INFO L112 eAbstractionObserver]: Analyzing ICFG arctan_Pade.c [2022-11-16 16:19:46,511 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 16:19:46,511 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 16:19:46,557 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 16:19:46,564 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;@7ca3f965, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 16:19:46,565 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 16:19:46,569 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 16:19:46,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-16 16:19:46,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:19:46,579 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:19:46,579 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:19:46,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:19:46,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1224452808, now seen corresponding path program 1 times [2022-11-16 16:19:46,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:19:46,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1031854633] [2022-11-16 16:19:46,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:19:46,598 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:19:46,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:19:46,600 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 16:19:46,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 16:19:49,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:19:49,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-16 16:19:49,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:19:49,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:19:49,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:19:49,251 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:19:49,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1031854633] [2022-11-16 16:19:49,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1031854633] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:19:49,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:19:49,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 16:19:49,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320269448] [2022-11-16 16:19:49,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:19:49,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 16:19:49,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:19:49,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 16:19:49,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 16:19:49,298 INFO L87 Difference]: Start difference. First operand has 29 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 16:19:49,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:19:49,324 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2022-11-16 16:19:49,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 16:19:49,326 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2022-11-16 16:19:49,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:19:49,335 INFO L225 Difference]: With dead ends: 55 [2022-11-16 16:19:49,336 INFO L226 Difference]: Without dead ends: 25 [2022-11-16 16:19:49,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 16:19:49,347 INFO L413 NwaCegarLoop]: 32 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, 32 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:19:49,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:19:49,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-16 16:19:49,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-11-16 16:19:49,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 16:19:49,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-11-16 16:19:49,394 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 20 [2022-11-16 16:19:49,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:19:49,394 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-11-16 16:19:49,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 16:19:49,395 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-11-16 16:19:49,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-16 16:19:49,397 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:19:49,397 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:19:49,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/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 [2022-11-16 16:19:49,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:19:49,599 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:19:49,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:19:49,600 INFO L85 PathProgramCache]: Analyzing trace with hash -769691898, now seen corresponding path program 1 times [2022-11-16 16:19:49,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:19:49,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1311377080] [2022-11-16 16:19:49,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:19:49,601 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:19:49,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:19:49,614 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 16:19:49,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-16 16:20:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:20:53,796 WARN L261 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-16 16:20:53,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:21:03,339 WARN L233 SmtUtils]: Spent 5.19s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 16:21:08,627 WARN L233 SmtUtils]: Spent 5.29s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 16:21:13,993 WARN L233 SmtUtils]: Spent 5.37s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 16:21:20,930 WARN L833 $PredicateComparison]: unable to prove that (and (= c_~Pi~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1570796326794896619.0 500000000000000000.0))) (= (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) (let ((.cse0 (fp.mul c_currentRoundingMode |c_ARCTAN_0_1_~x#1| |c_ARCTAN_0_1_~x#1|))) (fp.div c_currentRoundingMode .cse0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 9.0) ((_ to_fp 11 53) c_currentRoundingMode 5.0)) .cse0))))) |c_ARCTAN_0_1_PADE_2_2_#res#1|) (= |c_ARCTAN_0_1_#in~x#1| |c_ARCTAN_0_1_~x#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-11-16 16:21:28,091 WARN L233 SmtUtils]: Spent 5.55s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 16:21:38,413 WARN L233 SmtUtils]: Spent 5.57s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 16:21:40,801 WARN L833 $PredicateComparison]: unable to prove that (and (= c_~Pi~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1570796326794896619.0 500000000000000000.0))) (= |c_ARCTAN_0_1_#res#1| (fp.mul c_currentRoundingMode |c_ARCTAN_0_1_#in~x#1| (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) (let ((.cse0 (fp.mul c_currentRoundingMode |c_ARCTAN_0_1_#in~x#1| |c_ARCTAN_0_1_#in~x#1|))) (fp.div c_currentRoundingMode .cse0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 9.0) ((_ to_fp 11 53) c_currentRoundingMode 5.0)) .cse0))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-11-16 16:21:46,278 WARN L233 SmtUtils]: Spent 5.46s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 16:21:56,413 WARN L233 SmtUtils]: Spent 5.41s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 16:22:03,172 WARN L233 SmtUtils]: Spent 6.74s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 16:22:09,716 WARN L233 SmtUtils]: Spent 6.54s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 16:22:15,351 WARN L233 SmtUtils]: Spent 5.63s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 16:22:23,240 WARN L233 SmtUtils]: Spent 7.89s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 16:22:25,784 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (= |c_ARCTAN_POS_#t~ret5| (let ((.cse0 (fp.div c_currentRoundingMode .cse1 |c_ARCTAN_POS_#in~x|))) (fp.mul c_currentRoundingMode .cse0 (fp.sub c_currentRoundingMode .cse1 (let ((.cse2 (fp.mul c_currentRoundingMode .cse0 .cse0))) (fp.div c_currentRoundingMode .cse2 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 9.0) ((_ to_fp 11 53) c_currentRoundingMode 5.0)) .cse2)))))))) (fp.gt |c_ARCTAN_POS_#in~x| .cse1) (= c_~Pi~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1570796326794896619.0 500000000000000000.0))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2022-11-16 16:22:32,632 WARN L233 SmtUtils]: Spent 6.81s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 16:22:37,977 WARN L233 SmtUtils]: Spent 5.34s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 16:22:44,949 WARN L233 SmtUtils]: Spent 6.97s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 16:22:52,880 WARN L233 SmtUtils]: Spent 7.93s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 16:22:55,488 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.gt |c_ARCTAN_POS_#in~x| .cse0) (= c_~Pi~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1570796326794896619.0 500000000000000000.0))) (= (fp.sub c_currentRoundingMode (fp.div c_currentRoundingMode c_~Pi~0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) (let ((.cse1 (fp.div c_currentRoundingMode .cse0 |c_ARCTAN_POS_#in~x|))) (fp.mul c_currentRoundingMode .cse1 (fp.sub c_currentRoundingMode .cse0 (let ((.cse2 (fp.mul c_currentRoundingMode .cse1 .cse1))) (fp.div c_currentRoundingMode .cse2 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 9.0) ((_ to_fp 11 53) c_currentRoundingMode 5.0)) .cse2)))))))) |c_ARCTAN_POS_#res|) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2022-11-16 16:22:59,019 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.gt |c_ARCTAN_POS_#in~x| .cse0) (= c_~Pi~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1570796326794896619.0 500000000000000000.0))) (= (fp.sub c_currentRoundingMode (fp.div c_currentRoundingMode c_~Pi~0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) (let ((.cse1 (fp.div c_currentRoundingMode .cse0 |c_ARCTAN_POS_#in~x|))) (fp.mul c_currentRoundingMode .cse1 (fp.sub c_currentRoundingMode .cse0 (let ((.cse2 (fp.mul c_currentRoundingMode .cse1 .cse1))) (fp.div c_currentRoundingMode .cse2 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 9.0) ((_ to_fp 11 53) c_currentRoundingMode 5.0)) .cse2)))))))) |c_ARCTAN_POS_#res|) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2022-11-16 16:23:05,565 WARN L233 SmtUtils]: Spent 6.54s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 16:23:11,128 WARN L233 SmtUtils]: Spent 5.56s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 16:23:17,964 WARN L233 SmtUtils]: Spent 6.83s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 16:23:25,909 WARN L233 SmtUtils]: Spent 7.94s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 16:23:32,767 WARN L233 SmtUtils]: Spent 6.85s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 16:23:43,003 WARN L233 SmtUtils]: Spent 6.99s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 16:23:48,445 WARN L233 SmtUtils]: Spent 5.44s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 16:23:51,364 WARN L833 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_ARCTAN_~x#1| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (.cse0 (fp.neg |ULTIMATE.start_ARCTAN_~x#1|))) (and (fp.gt .cse0 .cse1) (= (fp.sub c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1570796326794896619.0 500000000000000000.0)) ((_ to_fp 11 53) c_currentRoundingMode 2.0)) (let ((.cse2 (fp.div c_currentRoundingMode .cse1 .cse0))) (fp.mul c_currentRoundingMode .cse2 (fp.sub c_currentRoundingMode .cse1 (let ((.cse3 (fp.mul c_currentRoundingMode .cse2 .cse2))) (fp.div c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 9.0) ((_ to_fp 11 53) c_currentRoundingMode 5.0)) .cse3)))))))) |c_ULTIMATE.start_ARCTAN_#t~ret7#1|) (fp.geq |ULTIMATE.start_ARCTAN_~x#1| (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 179000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000.0)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-11-16 16:23:58,165 WARN L233 SmtUtils]: Spent 6.70s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 16:24:04,875 WARN L233 SmtUtils]: Spent 6.71s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 16:24:10,359 WARN L233 SmtUtils]: Spent 5.48s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 16:24:13,075 WARN L833 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_ARCTAN_~x#1| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (.cse0 (fp.neg |ULTIMATE.start_ARCTAN_~x#1|))) (and (fp.gt .cse0 .cse1) (= |c_ULTIMATE.start_ARCTAN_#res#1| (fp.neg (fp.sub c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1570796326794896619.0 500000000000000000.0)) ((_ to_fp 11 53) c_currentRoundingMode 2.0)) (let ((.cse2 (fp.div c_currentRoundingMode .cse1 .cse0))) (fp.mul c_currentRoundingMode .cse2 (fp.sub c_currentRoundingMode .cse1 (let ((.cse3 (fp.mul c_currentRoundingMode .cse2 .cse2))) (fp.div c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 9.0) ((_ to_fp 11 53) c_currentRoundingMode 5.0)) .cse3)))))))))) (fp.geq |ULTIMATE.start_ARCTAN_~x#1| (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 179000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000.0)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-11-16 16:24:15,405 WARN L230 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2022-11-16 16:24:15,409 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:24:15,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1311377080] [2022-11-16 16:24:15,409 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2022-11-16 16:24:15,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [862680677] [2022-11-16 16:24:15,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:24:15,410 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 16:24:15,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 16:24:15,414 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 16:24:15,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2022-11-16 16:24:15,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-16 16:24:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:24:26,329 WARN L261 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-16 16:24:26,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:24:26,334 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2022-11-16 16:24:26,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137623061] [2022-11-16 16:24:26,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:24:26,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:24:26,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:24:26,346 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:24:26,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_301323dc-b09c-4140-a1db-90b235cfa564/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process