./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_b0102ee5-fdf5-4703-9050-573ae1ac74e9/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0102ee5-fdf5-4703-9050-573ae1ac74e9/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0102ee5-fdf5-4703-9050-573ae1ac74e9/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0102ee5-fdf5-4703-9050-573ae1ac74e9/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0102ee5-fdf5-4703-9050-573ae1ac74e9/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0102ee5-fdf5-4703-9050-573ae1ac74e9/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f460772fead60a1176aea731764c3b630060c5177c926c9899f5df040e824856 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 09:52:20,813 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 09:52:20,815 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 09:52:20,833 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 09:52:20,833 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 09:52:20,834 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 09:52:20,836 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 09:52:20,837 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 09:52:20,839 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 09:52:20,839 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 09:52:20,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 09:52:20,841 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 09:52:20,842 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 09:52:20,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 09:52:20,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 09:52:20,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 09:52:20,846 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 09:52:20,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 09:52:20,848 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 09:52:20,850 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 09:52:20,851 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 09:52:20,852 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 09:52:20,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 09:52:20,854 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 09:52:20,858 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 09:52:20,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 09:52:20,858 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 09:52:20,859 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 09:52:20,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 09:52:20,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 09:52:20,861 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 09:52:20,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 09:52:20,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 09:52:20,863 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 09:52:20,864 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 09:52:20,864 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 09:52:20,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 09:52:20,865 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 09:52:20,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 09:52:20,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 09:52:20,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 09:52:20,868 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0102ee5-fdf5-4703-9050-573ae1ac74e9/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 09:52:20,888 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 09:52:20,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 09:52:20,888 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 09:52:20,889 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 09:52:20,889 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 09:52:20,889 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 09:52:20,890 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 09:52:20,890 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 09:52:20,890 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 09:52:20,890 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 09:52:20,890 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 09:52:20,890 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 09:52:20,891 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 09:52:20,891 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 09:52:20,891 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 09:52:20,891 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 09:52:20,891 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 09:52:20,892 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 09:52:20,892 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 09:52:20,892 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 09:52:20,893 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 09:52:20,893 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 09:52:20,893 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 09:52:20,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 09:52:20,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 09:52:20,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 09:52:20,894 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 09:52:20,894 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 09:52:20,894 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 09:52:20,894 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 09:52:20,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 09:52:20,895 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 09:52:20,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:52:20,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 09:52:20,895 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 09:52:20,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 09:52:20,895 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 09:52:20,896 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 09:52:20,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 09:52:20,896 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 09:52:20,896 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 09:52:20,896 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_b0102ee5-fdf5-4703-9050-573ae1ac74e9/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0102ee5-fdf5-4703-9050-573ae1ac74e9/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f460772fead60a1176aea731764c3b630060c5177c926c9899f5df040e824856 [2022-12-14 09:52:21,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 09:52:21,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 09:52:21,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 09:52:21,126 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 09:52:21,127 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 09:52:21,128 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0102ee5-fdf5-4703-9050-573ae1ac74e9/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c [2022-12-14 09:52:23,695 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 09:52:23,855 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 09:52:23,855 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0102ee5-fdf5-4703-9050-573ae1ac74e9/sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c [2022-12-14 09:52:23,861 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0102ee5-fdf5-4703-9050-573ae1ac74e9/bin/utaipan-gh47qXpMRh/data/812a4e08d/71281b199fb74de4a689b4b3fc1e8ac9/FLAG46a2823d0 [2022-12-14 09:52:23,874 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0102ee5-fdf5-4703-9050-573ae1ac74e9/bin/utaipan-gh47qXpMRh/data/812a4e08d/71281b199fb74de4a689b4b3fc1e8ac9 [2022-12-14 09:52:23,877 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 09:52:23,878 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 09:52:23,879 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 09:52:23,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 09:52:23,883 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 09:52:23,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:52:23" (1/1) ... [2022-12-14 09:52:23,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31cff8ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:23, skipping insertion in model container [2022-12-14 09:52:23,884 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:52:23" (1/1) ... [2022-12-14 09:52:23,891 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 09:52:23,922 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 09:52:24,054 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_b0102ee5-fdf5-4703-9050-573ae1ac74e9/sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c[1995,2008] [2022-12-14 09:52:24,060 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_b0102ee5-fdf5-4703-9050-573ae1ac74e9/sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c[2389,2402] [2022-12-14 09:52:24,108 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:52:24,117 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 09:52:24,130 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_b0102ee5-fdf5-4703-9050-573ae1ac74e9/sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c[1995,2008] [2022-12-14 09:52:24,132 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_b0102ee5-fdf5-4703-9050-573ae1ac74e9/sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c[2389,2402] [2022-12-14 09:52:24,168 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:52:24,180 INFO L208 MainTranslator]: Completed translation [2022-12-14 09:52:24,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:24 WrapperNode [2022-12-14 09:52:24,180 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 09:52:24,181 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 09:52:24,181 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 09:52:24,182 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 09:52:24,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:24" (1/1) ... [2022-12-14 09:52:24,196 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:24" (1/1) ... [2022-12-14 09:52:24,224 INFO L138 Inliner]: procedures = 27, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 223 [2022-12-14 09:52:24,225 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 09:52:24,225 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 09:52:24,225 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 09:52:24,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 09:52:24,233 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:24" (1/1) ... [2022-12-14 09:52:24,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:24" (1/1) ... [2022-12-14 09:52:24,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:24" (1/1) ... [2022-12-14 09:52:24,237 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:24" (1/1) ... [2022-12-14 09:52:24,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:24" (1/1) ... [2022-12-14 09:52:24,249 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:24" (1/1) ... [2022-12-14 09:52:24,251 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:24" (1/1) ... [2022-12-14 09:52:24,252 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:24" (1/1) ... [2022-12-14 09:52:24,256 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 09:52:24,256 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 09:52:24,257 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 09:52:24,257 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 09:52:24,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:24" (1/1) ... [2022-12-14 09:52:24,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:52:24,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0102ee5-fdf5-4703-9050-573ae1ac74e9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:52:24,287 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0102ee5-fdf5-4703-9050-573ae1ac74e9/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 09:52:24,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0102ee5-fdf5-4703-9050-573ae1ac74e9/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 09:52:24,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 09:52:24,318 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-12-14 09:52:24,318 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-12-14 09:52:24,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 09:52:24,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 09:52:24,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 09:52:24,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 09:52:24,319 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 09:52:24,385 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 09:52:24,386 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 09:52:24,730 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 09:52:24,860 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 09:52:24,860 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 09:52:24,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:52:24 BoogieIcfgContainer [2022-12-14 09:52:24,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 09:52:24,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 09:52:24,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 09:52:24,866 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 09:52:24,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 09:52:23" (1/3) ... [2022-12-14 09:52:24,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c3257b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:52:24, skipping insertion in model container [2022-12-14 09:52:24,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:24" (2/3) ... [2022-12-14 09:52:24,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c3257b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:52:24, skipping insertion in model container [2022-12-14 09:52:24,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:52:24" (3/3) ... [2022-12-14 09:52:24,868 INFO L112 eAbstractionObserver]: Analyzing ICFG square_7+soft_float_1-2a.c.cil.c [2022-12-14 09:52:24,881 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 09:52:24,881 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 09:52:24,915 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 09:52:24,919 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;@7f0c4aa5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 09:52:24,920 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 09:52:24,923 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 42 states have internal predecessors, (59), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 09:52:24,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 09:52:24,927 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:52:24,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 09:52:24,928 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:52:24,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:52:24,932 INFO L85 PathProgramCache]: Analyzing trace with hash 12790299, now seen corresponding path program 1 times [2022-12-14 09:52:24,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:52:24,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467482097] [2022-12-14 09:52:24,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:52:24,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:52:25,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 09:52:25,008 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 09:52:25,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 09:52:25,049 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 09:52:25,050 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 09:52:25,051 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-12-14 09:52:25,053 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-12-14 09:52:25,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 09:52:25,056 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 09:52:25,059 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 09:52:25,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 09:52:25 BoogieIcfgContainer [2022-12-14 09:52:25,072 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 09:52:25,073 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 09:52:25,073 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 09:52:25,073 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 09:52:25,074 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:52:24" (3/4) ... [2022-12-14 09:52:25,077 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 09:52:25,077 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 09:52:25,078 INFO L158 Benchmark]: Toolchain (without parser) took 1200.05ms. Allocated memory was 117.4MB in the beginning and 144.7MB in the end (delta: 27.3MB). Free memory was 75.8MB in the beginning and 109.6MB in the end (delta: -33.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 09:52:25,079 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 117.4MB. Free memory is still 92.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 09:52:25,080 INFO L158 Benchmark]: CACSL2BoogieTranslator took 301.35ms. Allocated memory is still 117.4MB. Free memory was 75.8MB in the beginning and 60.9MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 09:52:25,080 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.36ms. Allocated memory is still 117.4MB. Free memory was 60.9MB in the beginning and 58.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 09:52:25,081 INFO L158 Benchmark]: Boogie Preprocessor took 30.57ms. Allocated memory is still 117.4MB. Free memory was 58.5MB in the beginning and 56.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 09:52:25,082 INFO L158 Benchmark]: RCFGBuilder took 605.22ms. Allocated memory was 117.4MB in the beginning and 144.7MB in the end (delta: 27.3MB). Free memory was 56.6MB in the beginning and 70.5MB in the end (delta: -13.8MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. [2022-12-14 09:52:25,082 INFO L158 Benchmark]: TraceAbstraction took 209.26ms. Allocated memory is still 144.7MB. Free memory was 69.8MB in the beginning and 110.5MB in the end (delta: -40.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 09:52:25,083 INFO L158 Benchmark]: Witness Printer took 4.36ms. Allocated memory is still 144.7MB. Free memory was 110.5MB in the beginning and 109.6MB in the end (delta: 861.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 09:52:25,086 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 117.4MB. Free memory is still 92.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 301.35ms. Allocated memory is still 117.4MB. Free memory was 75.8MB in the beginning and 60.9MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.36ms. Allocated memory is still 117.4MB. Free memory was 60.9MB in the beginning and 58.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.57ms. Allocated memory is still 117.4MB. Free memory was 58.5MB in the beginning and 56.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 605.22ms. Allocated memory was 117.4MB in the beginning and 144.7MB in the end (delta: 27.3MB). Free memory was 56.6MB in the beginning and 70.5MB in the end (delta: -13.8MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. * TraceAbstraction took 209.26ms. Allocated memory is still 144.7MB. Free memory was 69.8MB in the beginning and 110.5MB in the end (delta: -40.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.36ms. Allocated memory is still 144.7MB. Free memory was 110.5MB in the beginning and 109.6MB in the end (delta: 861.9kB). 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: 48]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L403] COND TRUE __VERIFIER_nondet_int() [L404] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=53, x=53] [L47] COND TRUE !(result >= 0.0f && result < 1.4f) VAL [IN=53, x=53] [L48] reach_error() VAL [IN=53, x=53] - UnprovableResult [Line: 61]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 51 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred 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, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 09:52:25,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0102ee5-fdf5-4703-9050-573ae1ac74e9/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0102ee5-fdf5-4703-9050-573ae1ac74e9/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0102ee5-fdf5-4703-9050-573ae1ac74e9/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0102ee5-fdf5-4703-9050-573ae1ac74e9/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0102ee5-fdf5-4703-9050-573ae1ac74e9/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0102ee5-fdf5-4703-9050-573ae1ac74e9/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0102ee5-fdf5-4703-9050-573ae1ac74e9/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f460772fead60a1176aea731764c3b630060c5177c926c9899f5df040e824856 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 09:52:26,819 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 09:52:26,821 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 09:52:26,840 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 09:52:26,840 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 09:52:26,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 09:52:26,843 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 09:52:26,844 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 09:52:26,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 09:52:26,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 09:52:26,848 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 09:52:26,849 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 09:52:26,849 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 09:52:26,850 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 09:52:26,851 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 09:52:26,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 09:52:26,853 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 09:52:26,854 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 09:52:26,856 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 09:52:26,857 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 09:52:26,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 09:52:26,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 09:52:26,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 09:52:26,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 09:52:26,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 09:52:26,866 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 09:52:26,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 09:52:26,867 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 09:52:26,867 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 09:52:26,868 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 09:52:26,868 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 09:52:26,869 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 09:52:26,870 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 09:52:26,871 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 09:52:26,871 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 09:52:26,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 09:52:26,872 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 09:52:26,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 09:52:26,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 09:52:26,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 09:52:26,874 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 09:52:26,875 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0102ee5-fdf5-4703-9050-573ae1ac74e9/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-12-14 09:52:26,896 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 09:52:26,897 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 09:52:26,897 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 09:52:26,897 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 09:52:26,898 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 09:52:26,898 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 09:52:26,898 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 09:52:26,898 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 09:52:26,899 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 09:52:26,899 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 09:52:26,899 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 09:52:26,899 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 09:52:26,900 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 09:52:26,900 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 09:52:26,900 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 09:52:26,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 09:52:26,901 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 09:52:26,901 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 09:52:26,901 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 09:52:26,901 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 09:52:26,901 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 09:52:26,902 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 09:52:26,902 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 09:52:26,902 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 09:52:26,902 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 09:52:26,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 09:52:26,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 09:52:26,903 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 09:52:26,903 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 09:52:26,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:52:26,903 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 09:52:26,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 09:52:26,904 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 09:52:26,904 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 09:52:26,910 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 09:52:26,910 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 09:52:26,910 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 09:52:26,910 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 09:52:26,910 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_b0102ee5-fdf5-4703-9050-573ae1ac74e9/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0102ee5-fdf5-4703-9050-573ae1ac74e9/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f460772fead60a1176aea731764c3b630060c5177c926c9899f5df040e824856 [2022-12-14 09:52:27,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 09:52:27,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 09:52:27,173 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 09:52:27,173 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 09:52:27,174 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 09:52:27,175 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0102ee5-fdf5-4703-9050-573ae1ac74e9/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c [2022-12-14 09:52:29,757 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 09:52:29,934 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 09:52:29,934 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0102ee5-fdf5-4703-9050-573ae1ac74e9/sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c [2022-12-14 09:52:29,941 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0102ee5-fdf5-4703-9050-573ae1ac74e9/bin/utaipan-gh47qXpMRh/data/779648d13/32da43ce311345b8ba50876e79bcf448/FLAGa79e57be8 [2022-12-14 09:52:29,952 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0102ee5-fdf5-4703-9050-573ae1ac74e9/bin/utaipan-gh47qXpMRh/data/779648d13/32da43ce311345b8ba50876e79bcf448 [2022-12-14 09:52:29,953 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 09:52:29,954 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 09:52:29,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 09:52:29,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 09:52:29,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 09:52:29,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:52:29" (1/1) ... [2022-12-14 09:52:29,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d00d9bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:29, skipping insertion in model container [2022-12-14 09:52:29,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:52:29" (1/1) ... [2022-12-14 09:52:29,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 09:52:29,994 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 09:52:30,104 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_b0102ee5-fdf5-4703-9050-573ae1ac74e9/sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c[1995,2008] [2022-12-14 09:52:30,109 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_b0102ee5-fdf5-4703-9050-573ae1ac74e9/sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c[2389,2402] [2022-12-14 09:52:30,142 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:52:30,151 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 09:52:30,162 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_b0102ee5-fdf5-4703-9050-573ae1ac74e9/sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c[1995,2008] [2022-12-14 09:52:30,163 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_b0102ee5-fdf5-4703-9050-573ae1ac74e9/sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c[2389,2402] [2022-12-14 09:52:30,183 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:52:30,194 INFO L208 MainTranslator]: Completed translation [2022-12-14 09:52:30,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:30 WrapperNode [2022-12-14 09:52:30,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 09:52:30,195 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 09:52:30,195 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 09:52:30,195 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 09:52:30,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:30" (1/1) ... [2022-12-14 09:52:30,209 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:30" (1/1) ... [2022-12-14 09:52:30,226 INFO L138 Inliner]: procedures = 28, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 165 [2022-12-14 09:52:30,226 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 09:52:30,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 09:52:30,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 09:52:30,227 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 09:52:30,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:30" (1/1) ... [2022-12-14 09:52:30,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:30" (1/1) ... [2022-12-14 09:52:30,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:30" (1/1) ... [2022-12-14 09:52:30,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:30" (1/1) ... [2022-12-14 09:52:30,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:30" (1/1) ... [2022-12-14 09:52:30,245 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:30" (1/1) ... [2022-12-14 09:52:30,247 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:30" (1/1) ... [2022-12-14 09:52:30,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:30" (1/1) ... [2022-12-14 09:52:30,251 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 09:52:30,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 09:52:30,252 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 09:52:30,252 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 09:52:30,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:30" (1/1) ... [2022-12-14 09:52:30,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:52:30,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0102ee5-fdf5-4703-9050-573ae1ac74e9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:52:30,278 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0102ee5-fdf5-4703-9050-573ae1ac74e9/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 09:52:30,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0102ee5-fdf5-4703-9050-573ae1ac74e9/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 09:52:30,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 09:52:30,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 09:52:30,311 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-12-14 09:52:30,311 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-12-14 09:52:30,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 09:52:30,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 09:52:30,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 09:52:30,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 09:52:30,381 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 09:52:30,383 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 09:52:32,812 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 09:52:32,818 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 09:52:32,818 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 09:52:32,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:52:32 BoogieIcfgContainer [2022-12-14 09:52:32,820 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 09:52:32,821 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 09:52:32,821 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 09:52:32,824 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 09:52:32,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 09:52:29" (1/3) ... [2022-12-14 09:52:32,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dcd5643 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:52:32, skipping insertion in model container [2022-12-14 09:52:32,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:30" (2/3) ... [2022-12-14 09:52:32,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dcd5643 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:52:32, skipping insertion in model container [2022-12-14 09:52:32,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:52:32" (3/3) ... [2022-12-14 09:52:32,826 INFO L112 eAbstractionObserver]: Analyzing ICFG square_7+soft_float_1-2a.c.cil.c [2022-12-14 09:52:32,838 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 09:52:32,839 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 09:52:32,873 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 09:52:32,877 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;@7bd39e1f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 09:52:32,877 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 09:52:32,880 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 68 states have (on average 1.588235294117647) internal successors, (108), 72 states have internal predecessors, (108), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 09:52:32,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 09:52:32,885 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:52:32,886 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:52:32,886 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:52:32,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:52:32,890 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2022-12-14 09:52:32,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 09:52:32,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1891770662] [2022-12-14 09:52:32,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:52:32,899 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 09:52:32,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0102ee5-fdf5-4703-9050-573ae1ac74e9/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 09:52:32,900 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0102ee5-fdf5-4703-9050-573ae1ac74e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 09:52:32,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0102ee5-fdf5-4703-9050-573ae1ac74e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 09:52:33,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:52:33,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-14 09:52:33,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:52:33,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:52:33,372 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:52:33,372 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 09:52:33,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1891770662] [2022-12-14 09:52:33,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1891770662] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:52:33,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:52:33,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 09:52:33,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505449676] [2022-12-14 09:52:33,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:52:33,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 09:52:33,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 09:52:33,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 09:52:33,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 09:52:33,399 INFO L87 Difference]: Start difference. First operand has 81 states, 68 states have (on average 1.588235294117647) internal successors, (108), 72 states have internal predecessors, (108), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:52:33,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:52:33,421 INFO L93 Difference]: Finished difference Result 157 states and 248 transitions. [2022-12-14 09:52:33,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 09:52:33,422 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-14 09:52:33,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:52:33,428 INFO L225 Difference]: With dead ends: 157 [2022-12-14 09:52:33,428 INFO L226 Difference]: Without dead ends: 74 [2022-12-14 09:52:33,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 09:52:33,432 INFO L413 NwaCegarLoop]: 116 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, 116 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 09:52:33,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 09:52:33,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-12-14 09:52:33,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-12-14 09:52:33,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 62 states have (on average 1.4838709677419355) internal successors, (92), 65 states have internal predecessors, (92), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-14 09:52:33,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 107 transitions. [2022-12-14 09:52:33,474 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 107 transitions. Word has length 7 [2022-12-14 09:52:33,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:52:33,474 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 107 transitions. [2022-12-14 09:52:33,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:52:33,474 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 107 transitions. [2022-12-14 09:52:33,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 09:52:33,474 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:52:33,475 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:52:33,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0102ee5-fdf5-4703-9050-573ae1ac74e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 09:52:33,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0102ee5-fdf5-4703-9050-573ae1ac74e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 09:52:33,677 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:52:33,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:52:33,679 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2022-12-14 09:52:33,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 09:52:33,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [228180802] [2022-12-14 09:52:33,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:52:33,681 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 09:52:33,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0102ee5-fdf5-4703-9050-573ae1ac74e9/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 09:52:33,685 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0102ee5-fdf5-4703-9050-573ae1ac74e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 09:52:33,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0102ee5-fdf5-4703-9050-573ae1ac74e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process