./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 6b4ec56b 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_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/arctan_Pade.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9 --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-6b4ec56 [2022-11-20 20:50:06,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:50:06,747 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:50:06,787 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:50:06,787 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:50:06,791 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:50:06,794 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:50:06,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:50:06,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:50:06,803 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:50:06,804 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:50:06,805 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:50:06,805 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:50:06,806 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:50:06,807 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:50:06,808 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:50:06,809 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:50:06,810 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:50:06,811 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:50:06,813 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:50:06,814 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:50:06,820 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:50:06,822 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:50:06,823 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:50:06,838 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:50:06,839 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:50:06,839 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:50:06,840 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:50:06,840 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:50:06,841 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:50:06,841 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:50:06,842 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:50:06,843 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:50:06,844 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:50:06,845 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:50:06,845 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:50:06,849 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:50:06,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:50:06,850 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:50:06,854 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:50:06,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:50:06,856 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 20:50:06,888 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:50:06,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:50:06,889 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:50:06,889 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:50:06,890 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:50:06,890 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:50:06,891 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:50:06,891 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:50:06,891 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:50:06,891 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:50:06,892 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:50:06,893 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:50:06,893 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:50:06,893 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:50:06,893 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:50:06,893 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:50:06,894 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:50:06,894 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:50:06,895 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:50:06,895 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:50:06,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:50:06,895 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:50:06,895 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:50:06,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:50:06,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:50:06,896 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:50:06,897 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:50:06,897 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:50:06,897 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:50:06,898 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:50:06,898 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:50:06,898 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:50:06,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:50:06,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:50:06,899 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:50:06,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:50:06,899 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:50:06,900 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:50:06,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:50:06,900 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:50:06,900 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:50:06,900 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_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03d4f02c4d6708ec7407dd5809f77bd3b86d46b08411c69d0afecaf50bc68872 [2022-11-20 20:50:07,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:50:07,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:50:07,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:50:07,230 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:50:07,231 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:50:07,232 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/float-benchs/arctan_Pade.c [2022-11-20 20:50:10,341 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:50:10,581 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:50:10,581 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/sv-benchmarks/c/float-benchs/arctan_Pade.c [2022-11-20 20:50:10,588 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/data/06c2cd197/f67f34f6ad2e421aaf98d574540576e8/FLAG48a33e088 [2022-11-20 20:50:10,606 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/data/06c2cd197/f67f34f6ad2e421aaf98d574540576e8 [2022-11-20 20:50:10,612 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:50:10,613 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:50:10,618 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:50:10,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:50:10,622 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:50:10,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:50:10" (1/1) ... [2022-11-20 20:50:10,624 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59f3aa29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:50:10, skipping insertion in model container [2022-11-20 20:50:10,625 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:50:10" (1/1) ... [2022-11-20 20:50:10,631 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:50:10,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:50:10,834 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/sv-benchmarks/c/float-benchs/arctan_Pade.c[665,678] [2022-11-20 20:50:10,854 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:50:10,864 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:50:10,877 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/sv-benchmarks/c/float-benchs/arctan_Pade.c[665,678] [2022-11-20 20:50:10,886 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:50:10,899 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:50:10,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:50:10 WrapperNode [2022-11-20 20:50:10,899 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:50:10,900 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:50:10,900 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:50:10,901 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:50:10,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:50:10" (1/1) ... [2022-11-20 20:50:10,916 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:50:10" (1/1) ... [2022-11-20 20:50:10,930 INFO L138 Inliner]: procedures = 18, calls = 15, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 50 [2022-11-20 20:50:10,930 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:50:10,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:50:10,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:50:10,931 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:50:10,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:50:10" (1/1) ... [2022-11-20 20:50:10,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:50:10" (1/1) ... [2022-11-20 20:50:10,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:50:10" (1/1) ... [2022-11-20 20:50:10,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:50:10" (1/1) ... [2022-11-20 20:50:10,955 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:50:10" (1/1) ... [2022-11-20 20:50:10,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:50:10" (1/1) ... [2022-11-20 20:50:10,957 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:50:10" (1/1) ... [2022-11-20 20:50:10,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:50:10" (1/1) ... [2022-11-20 20:50:10,960 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:50:10,961 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:50:10,961 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:50:10,961 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:50:10,962 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:50:10" (1/1) ... [2022-11-20 20:50:10,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:50:10,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:50:11,003 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:50:11,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:50:11,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:50:11,051 INFO L130 BoogieDeclarations]: Found specification of procedure ARCTAN_POS [2022-11-20 20:50:11,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ARCTAN_POS [2022-11-20 20:50:11,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:50:11,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:50:11,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:50:11,052 INFO L130 BoogieDeclarations]: Found specification of procedure ARCTAN_0_1 [2022-11-20 20:50:11,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ARCTAN_0_1 [2022-11-20 20:50:11,131 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:50:11,133 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:50:11,346 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:50:11,409 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:50:11,410 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 20:50:11,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:50:11 BoogieIcfgContainer [2022-11-20 20:50:11,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:50:11,415 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:50:11,415 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:50:11,419 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:50:11,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:50:10" (1/3) ... [2022-11-20 20:50:11,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37c49671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:50:11, skipping insertion in model container [2022-11-20 20:50:11,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:50:10" (2/3) ... [2022-11-20 20:50:11,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37c49671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:50:11, skipping insertion in model container [2022-11-20 20:50:11,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:50:11" (3/3) ... [2022-11-20 20:50:11,438 INFO L112 eAbstractionObserver]: Analyzing ICFG arctan_Pade.c [2022-11-20 20:50:11,483 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:50:11,483 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:50:11,563 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:50:11,569 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;@1c5c5c93, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:50:11,570 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:50:11,574 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) [2022-11-20 20:50:11,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 20:50:11,582 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:50:11,582 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:50:11,583 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:50:11,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:50:11,588 INFO L85 PathProgramCache]: Analyzing trace with hash -943177368, now seen corresponding path program 1 times [2022-11-20 20:50:11,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:50:11,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332065596] [2022-11-20 20:50:11,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:50:11,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:50:11,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 20:50:11,714 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 20:50:11,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 20:50:11,789 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-20 20:50:11,791 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 20:50:11,792 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 20:50:11,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:50:11,798 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-20 20:50:11,803 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 20:50:11,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 08:50:11 BoogieIcfgContainer [2022-11-20 20:50:11,842 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 20:50:11,845 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 20:50:11,845 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 20:50:11,846 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 20:50:11,846 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:50:11" (3/4) ... [2022-11-20 20:50:11,854 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 20:50:11,854 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 20:50:11,855 INFO L158 Benchmark]: Toolchain (without parser) took 1241.83ms. Allocated memory is still 180.4MB. Free memory was 151.0MB in the beginning and 109.3MB in the end (delta: 41.8MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2022-11-20 20:50:11,856 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 117.4MB. Free memory is still 70.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:50:11,857 INFO L158 Benchmark]: CACSL2BoogieTranslator took 281.06ms. Allocated memory is still 180.4MB. Free memory was 150.5MB in the beginning and 140.7MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-20 20:50:11,858 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.05ms. Allocated memory is still 180.4MB. Free memory was 140.7MB in the beginning and 138.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:50:11,859 INFO L158 Benchmark]: Boogie Preprocessor took 29.09ms. Allocated memory is still 180.4MB. Free memory was 138.8MB in the beginning and 137.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:50:11,864 INFO L158 Benchmark]: RCFGBuilder took 451.79ms. Allocated memory is still 180.4MB. Free memory was 137.5MB in the beginning and 124.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 20:50:11,865 INFO L158 Benchmark]: TraceAbstraction took 427.22ms. Allocated memory is still 180.4MB. Free memory was 124.4MB in the beginning and 109.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-20 20:50:11,865 INFO L158 Benchmark]: Witness Printer took 9.82ms. Allocated memory is still 180.4MB. Free memory is still 109.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:50:11,870 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 117.4MB. Free memory is still 70.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 281.06ms. Allocated memory is still 180.4MB. Free memory was 150.5MB in the beginning and 140.7MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.05ms. Allocated memory is still 180.4MB. Free memory was 140.7MB in the beginning and 138.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.09ms. Allocated memory is still 180.4MB. Free memory was 138.8MB in the beginning and 137.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 451.79ms. Allocated memory is still 180.4MB. Free memory was 137.5MB in the beginning and 124.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 427.22ms. Allocated memory is still 180.4MB. Free memory was 124.4MB in the beginning and 109.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 9.82ms. Allocated memory is still 180.4MB. Free memory is still 109.3MB. 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 [2022-11-20 20:50:11,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/arctan_Pade.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9 --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-6b4ec56 [2022-11-20 20:50:14,360 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:50:14,363 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:50:14,401 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:50:14,402 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:50:14,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:50:14,408 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:50:14,412 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:50:14,414 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:50:14,420 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:50:14,421 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:50:14,424 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:50:14,424 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:50:14,426 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:50:14,428 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:50:14,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:50:14,436 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:50:14,437 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:50:14,439 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:50:14,445 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:50:14,447 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:50:14,450 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:50:14,451 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:50:14,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:50:14,460 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:50:14,461 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:50:14,461 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:50:14,463 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:50:14,464 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:50:14,465 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:50:14,465 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:50:14,466 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:50:14,468 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:50:14,469 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:50:14,478 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:50:14,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:50:14,479 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:50:14,480 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:50:14,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:50:14,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:50:14,484 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:50:14,485 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-20 20:50:14,523 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:50:14,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:50:14,525 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:50:14,526 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:50:14,526 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:50:14,527 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:50:14,527 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:50:14,527 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:50:14,528 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:50:14,528 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:50:14,529 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:50:14,529 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:50:14,530 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:50:14,530 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:50:14,531 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:50:14,531 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:50:14,531 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:50:14,531 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:50:14,532 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:50:14,532 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 20:50:14,532 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 20:50:14,532 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 20:50:14,533 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:50:14,533 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:50:14,533 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:50:14,533 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:50:14,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:50:14,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 20:50:14,534 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:50:14,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:50:14,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:50:14,535 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:50:14,536 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:50:14,536 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-20 20:50:14,536 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 20:50:14,536 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:50:14,537 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:50:14,537 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 20:50:14,537 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_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03d4f02c4d6708ec7407dd5809f77bd3b86d46b08411c69d0afecaf50bc68872 [2022-11-20 20:50:14,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:50:14,959 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:50:14,962 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:50:14,963 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:50:14,963 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:50:14,965 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/float-benchs/arctan_Pade.c [2022-11-20 20:50:18,216 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:50:18,430 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:50:18,430 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/sv-benchmarks/c/float-benchs/arctan_Pade.c [2022-11-20 20:50:18,438 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/data/eb561f171/3ec4d2f4377d4fd29c1c0dc1204e9d5c/FLAGb1ddb0c76 [2022-11-20 20:50:18,462 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/data/eb561f171/3ec4d2f4377d4fd29c1c0dc1204e9d5c [2022-11-20 20:50:18,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:50:18,466 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:50:18,469 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:50:18,472 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:50:18,477 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:50:18,479 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:50:18" (1/1) ... [2022-11-20 20:50:18,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@293877f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:50:18, skipping insertion in model container [2022-11-20 20:50:18,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:50:18" (1/1) ... [2022-11-20 20:50:18,488 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:50:18,512 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:50:18,662 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/sv-benchmarks/c/float-benchs/arctan_Pade.c[665,678] [2022-11-20 20:50:18,688 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:50:18,710 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:50:18,728 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/sv-benchmarks/c/float-benchs/arctan_Pade.c[665,678] [2022-11-20 20:50:18,746 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:50:18,781 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:50:18,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:50:18 WrapperNode [2022-11-20 20:50:18,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:50:18,783 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:50:18,783 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:50:18,784 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:50:18,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:50:18" (1/1) ... [2022-11-20 20:50:18,819 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:50:18" (1/1) ... [2022-11-20 20:50:18,844 INFO L138 Inliner]: procedures = 19, calls = 15, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 51 [2022-11-20 20:50:18,845 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:50:18,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:50:18,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:50:18,847 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:50:18,856 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:50:18" (1/1) ... [2022-11-20 20:50:18,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:50:18" (1/1) ... [2022-11-20 20:50:18,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:50:18" (1/1) ... [2022-11-20 20:50:18,867 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:50:18" (1/1) ... [2022-11-20 20:50:18,881 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:50:18" (1/1) ... [2022-11-20 20:50:18,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:50:18" (1/1) ... [2022-11-20 20:50:18,892 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:50:18" (1/1) ... [2022-11-20 20:50:18,896 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:50:18" (1/1) ... [2022-11-20 20:50:18,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:50:18,902 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:50:18,904 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:50:18,904 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:50:18,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:50:18" (1/1) ... [2022-11-20 20:50:18,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:50:18,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:50:18,940 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:50:18,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:50:18,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:50:18,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 20:50:18,991 INFO L130 BoogieDeclarations]: Found specification of procedure ARCTAN_POS [2022-11-20 20:50:18,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ARCTAN_POS [2022-11-20 20:50:18,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:50:18,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:50:18,992 INFO L130 BoogieDeclarations]: Found specification of procedure ARCTAN_0_1 [2022-11-20 20:50:18,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ARCTAN_0_1 [2022-11-20 20:50:19,087 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:50:19,090 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:50:24,897 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:50:24,907 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:50:24,907 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 20:50:24,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:50:24 BoogieIcfgContainer [2022-11-20 20:50:24,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:50:24,912 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:50:24,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:50:24,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:50:24,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:50:18" (1/3) ... [2022-11-20 20:50:24,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@82a485e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:50:24, skipping insertion in model container [2022-11-20 20:50:24,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:50:18" (2/3) ... [2022-11-20 20:50:24,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@82a485e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:50:24, skipping insertion in model container [2022-11-20 20:50:24,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:50:24" (3/3) ... [2022-11-20 20:50:24,922 INFO L112 eAbstractionObserver]: Analyzing ICFG arctan_Pade.c [2022-11-20 20:50:24,953 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:50:24,954 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:50:25,003 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:50:25,011 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;@5bf95e10, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:50:25,011 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:50:25,015 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) [2022-11-20 20:50:25,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-20 20:50:25,024 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:50:25,025 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] [2022-11-20 20:50:25,026 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:50:25,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:50:25,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1224452808, now seen corresponding path program 1 times [2022-11-20 20:50:25,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:50:25,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [333473046] [2022-11-20 20:50:25,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:50:25,061 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 [2022-11-20 20:50:25,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:50:25,067 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/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) [2022-11-20 20:50:25,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 20:50:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:50:27,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 20:50:27,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:50:27,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:50:27,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:50:27,867 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:50:27,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [333473046] [2022-11-20 20:50:27,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [333473046] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:50:27,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:50:27,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:50:27,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642210945] [2022-11-20 20:50:27,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:50:27,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 20:50:27,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:50:27,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 20:50:27,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 20:50:27,909 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) [2022-11-20 20:50:27,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:50:27,931 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2022-11-20 20:50:27,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 20:50:27,934 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 [2022-11-20 20:50:27,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:50:27,943 INFO L225 Difference]: With dead ends: 55 [2022-11-20 20:50:27,943 INFO L226 Difference]: Without dead ends: 25 [2022-11-20 20:50:27,946 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 [2022-11-20 20:50:27,950 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 [2022-11-20 20:50:27,952 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] [2022-11-20 20:50:27,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-20 20:50:27,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-11-20 20:50:27,989 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) [2022-11-20 20:50:27,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-11-20 20:50:27,992 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 20 [2022-11-20 20:50:27,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:50:27,993 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-11-20 20:50:27,993 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) [2022-11-20 20:50:27,994 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-11-20 20:50:27,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-20 20:50:27,996 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:50:27,996 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] [2022-11-20 20:50:28,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-20 20:50:28,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 20:50:28,219 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:50:28,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:50:28,220 INFO L85 PathProgramCache]: Analyzing trace with hash -769691898, now seen corresponding path program 1 times [2022-11-20 20:50:28,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:50:28,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2039605205] [2022-11-20 20:50:28,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:50:28,222 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 [2022-11-20 20:50:28,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:50:28,223 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/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) [2022-11-20 20:50:28,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 20:51:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:51:36,780 WARN L261 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 20:51:36,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:51:44,623 WARN L233 SmtUtils]: Spent 5.45s 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) [2022-11-20 20:51:50,030 WARN L233 SmtUtils]: Spent 5.41s 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) [2022-11-20 20:51:55,443 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) [2022-11-20 20:52:02,399 WARN L837 $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 [2022-11-20 20:52:09,449 WARN L233 SmtUtils]: Spent 5.62s 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) [2022-11-20 20:52:19,825 WARN L233 SmtUtils]: Spent 5.62s 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) [2022-11-20 20:52:22,186 WARN L837 $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 [2022-11-20 20:52:25,150 WARN L859 $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 true [2022-11-20 20:52:30,696 WARN L233 SmtUtils]: Spent 5.54s 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) [2022-11-20 20:52:41,072 WARN L233 SmtUtils]: Spent 5.54s 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) [2022-11-20 20:52:47,909 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) [2022-11-20 20:52:54,573 WARN L233 SmtUtils]: Spent 6.66s 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) [2022-11-20 20:52:59,813 WARN L233 SmtUtils]: Spent 5.24s 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) [2022-11-20 20:53:07,353 WARN L233 SmtUtils]: Spent 7.54s 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) [2022-11-20 20:53:10,159 WARN L837 $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 [2022-11-20 20:53:17,288 WARN L233 SmtUtils]: Spent 7.10s 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) [2022-11-20 20:53:23,015 WARN L233 SmtUtils]: Spent 5.73s 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) [2022-11-20 20:53:29,685 WARN L233 SmtUtils]: Spent 6.67s 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) [2022-11-20 20:53:37,096 WARN L233 SmtUtils]: Spent 7.41s 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) [2022-11-20 20:53:39,788 WARN L837 $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 [2022-11-20 20:53:46,426 WARN L233 SmtUtils]: Spent 6.60s 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) [2022-11-20 20:53:51,614 WARN L233 SmtUtils]: Spent 5.19s 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) [2022-11-20 20:53:58,219 WARN L233 SmtUtils]: Spent 6.60s 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) [2022-11-20 20:54:05,608 WARN L233 SmtUtils]: Spent 7.39s 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) [2022-11-20 20:54:12,007 WARN L233 SmtUtils]: Spent 6.39s 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) [2022-11-20 20:54:20,834 WARN L233 SmtUtils]: Spent 6.44s 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) [2022-11-20 20:54:26,014 WARN L233 SmtUtils]: Spent 5.18s 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) [2022-11-20 20:54:28,637 WARN L837 $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 [2022-11-20 20:54:35,270 WARN L233 SmtUtils]: Spent 6.54s 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) [2022-11-20 20:54:41,842 WARN L233 SmtUtils]: Spent 6.57s 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) [2022-11-20 20:54:47,092 WARN L233 SmtUtils]: Spent 5.25s 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) [2022-11-20 20:54:49,740 WARN L837 $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 [2022-11-20 20:54:54,037 WARN L230 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2022-11-20 20:54:54,037 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2022-11-20 20:54:54,046 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:54:54,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2039605205] [2022-11-20 20:54:54,047 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/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") [2022-11-20 20:54:54,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [592887779] [2022-11-20 20:54:54,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:54:54,047 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 20:54:54,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 20:54:54,083 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 20:54:54,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-20 20:55:02,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:55:02,745 WARN L261 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-20 20:55:02,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:55:02,750 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2022-11-20 20:55:02,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977999954] [2022-11-20 20:55:02,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:55:02,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:55:02,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:55:02,759 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:55:02,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa82844-9361-4460-bdd3-d71e50f77c5c/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process