./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/bin/utaipan-vmNK8stdcF --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 aff0e850a0570cb9360bb6d36c5ca43ce702912f0a3611fc5fda11d0dcbb5bf1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:38:37,046 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:38:37,048 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:38:37,101 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:38:37,101 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:38:37,106 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:38:37,108 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:38:37,112 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:38:37,114 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:38:37,122 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:38:37,123 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:38:37,125 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:38:37,126 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:38:37,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:38:37,131 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:38:37,138 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:38:37,141 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:38:37,142 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:38:37,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:38:37,152 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:38:37,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:38:37,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:38:37,159 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:38:37,160 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:38:37,163 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:38:37,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:38:37,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:38:37,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:38:37,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:38:37,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:38:37,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:38:37,168 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:38:37,168 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:38:37,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:38:37,170 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:38:37,171 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:38:37,173 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:38:37,175 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:38:37,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:38:37,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:38:37,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:38:37,177 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 22:38:37,223 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:38:37,241 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:38:37,242 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:38:37,242 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:38:37,242 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:38:37,242 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:38:37,242 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:38:37,243 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:38:37,243 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:38:37,243 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:38:37,243 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:38:37,243 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:38:37,244 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:38:37,244 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:38:37,244 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:38:37,244 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:38:37,245 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:38:37,245 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:38:37,245 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:38:37,245 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:38:37,246 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:38:37,246 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:38:37,246 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:38:37,246 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:38:37,246 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:38:37,247 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:38:37,247 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:38:37,247 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:38:37,247 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:38:37,247 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:38:37,248 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:38:37,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:38:37,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:38:37,248 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:38:37,248 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:38:37,249 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:38:37,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:38:37,249 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:38:37,249 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:38:37,249 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:38:37,249 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aff0e850a0570cb9360bb6d36c5ca43ce702912f0a3611fc5fda11d0dcbb5bf1 [2021-11-12 22:38:37,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:38:37,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:38:37,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:38:37,520 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:38:37,521 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:38:37,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c [2021-11-12 22:38:37,589 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/bin/utaipan-vmNK8stdcF/data/f0e1ead34/1f139540fdec42e19caa6641eb3eb087/FLAG3433b2363 [2021-11-12 22:38:38,054 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:38:38,054 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c [2021-11-12 22:38:38,063 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/bin/utaipan-vmNK8stdcF/data/f0e1ead34/1f139540fdec42e19caa6641eb3eb087/FLAG3433b2363 [2021-11-12 22:38:38,425 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/bin/utaipan-vmNK8stdcF/data/f0e1ead34/1f139540fdec42e19caa6641eb3eb087 [2021-11-12 22:38:38,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:38:38,428 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:38:38,452 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:38:38,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:38:38,456 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:38:38,457 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:38:38" (1/1) ... [2021-11-12 22:38:38,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c2381fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:38, skipping insertion in model container [2021-11-12 22:38:38,458 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:38:38" (1/1) ... [2021-11-12 22:38:38,481 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:38:38,524 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:38:38,727 WARN L228 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_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c[1995,2008] [2021-11-12 22:38:38,735 WARN L228 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_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c[2364,2377] [2021-11-12 22:38:38,810 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:38:38,831 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:38:38,859 WARN L228 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_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c[1995,2008] [2021-11-12 22:38:38,867 WARN L228 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_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c[2364,2377] [2021-11-12 22:38:38,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:38:38,944 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:38:38,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:38 WrapperNode [2021-11-12 22:38:38,947 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:38:38,948 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:38:38,949 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:38:38,949 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:38:38,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:38" (1/1) ... [2021-11-12 22:38:38,983 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:38" (1/1) ... [2021-11-12 22:38:39,023 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:38:39,024 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:38:39,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:38:39,025 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:38:39,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:38" (1/1) ... [2021-11-12 22:38:39,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:38" (1/1) ... [2021-11-12 22:38:39,050 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:38" (1/1) ... [2021-11-12 22:38:39,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:38" (1/1) ... [2021-11-12 22:38:39,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:38" (1/1) ... [2021-11-12 22:38:39,069 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:38" (1/1) ... [2021-11-12 22:38:39,084 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:38" (1/1) ... [2021-11-12 22:38:39,087 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:38:39,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:38:39,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:38:39,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:38:39,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:38" (1/1) ... [2021-11-12 22:38:39,105 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:38:39,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:38:39,131 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:38:39,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:38:39,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:38:39,171 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-12 22:38:39,171 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-12 22:38:39,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 22:38:39,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:38:39,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:38:39,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 22:38:39,172 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 22:38:39,669 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:38:39,670 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-12 22:38:39,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:38:39 BoogieIcfgContainer [2021-11-12 22:38:39,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:38:39,675 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:38:39,675 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:38:39,678 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:38:39,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:38:38" (1/3) ... [2021-11-12 22:38:39,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cae23c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:38:39, skipping insertion in model container [2021-11-12 22:38:39,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:38" (2/3) ... [2021-11-12 22:38:39,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cae23c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:38:39, skipping insertion in model container [2021-11-12 22:38:39,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:38:39" (3/3) ... [2021-11-12 22:38:39,682 INFO L111 eAbstractionObserver]: Analyzing ICFG square_7+soft_float_5a.c.cil.c [2021-11-12 22:38:39,688 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:38:39,688 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-12 22:38:39,739 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:38:39,746 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 22:38:39,747 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-12 22:38:39,765 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 38 states have internal predecessors, (55), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-12 22:38:39,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-12 22:38:39,769 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:39,769 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-12 22:38:39,770 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:38:39,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:39,775 INFO L85 PathProgramCache]: Analyzing trace with hash 7146571, now seen corresponding path program 1 times [2021-11-12 22:38:39,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:38:39,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014804871] [2021-11-12 22:38:39,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:39,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:38:39,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:38:39,881 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 22:38:39,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:38:39,918 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-12 22:38:39,920 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 22:38:39,921 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-12 22:38:39,923 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-12 22:38:39,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 22:38:39,928 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-12 22:38:39,931 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 22:38:39,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 10:38:39 BoogieIcfgContainer [2021-11-12 22:38:39,950 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 22:38:39,951 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 22:38:39,951 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 22:38:39,951 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 22:38:39,952 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:38:39" (3/4) ... [2021-11-12 22:38:39,955 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-12 22:38:39,955 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 22:38:39,956 INFO L158 Benchmark]: Toolchain (without parser) took 1527.85ms. Allocated memory is still 102.8MB. Free memory was 58.2MB in the beginning and 38.9MB in the end (delta: 19.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-12 22:38:39,957 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 102.8MB. Free memory was 74.7MB in the beginning and 74.6MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:38:39,958 INFO L158 Benchmark]: CACSL2BoogieTranslator took 495.72ms. Allocated memory is still 102.8MB. Free memory was 58.1MB in the beginning and 73.6MB in the end (delta: -15.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-12 22:38:39,959 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.86ms. Allocated memory is still 102.8MB. Free memory was 73.6MB in the beginning and 71.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:38:39,959 INFO L158 Benchmark]: Boogie Preprocessor took 70.02ms. Allocated memory is still 102.8MB. Free memory was 71.9MB in the beginning and 70.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:38:39,960 INFO L158 Benchmark]: RCFGBuilder took 577.87ms. Allocated memory is still 102.8MB. Free memory was 70.2MB in the beginning and 53.0MB in the end (delta: 17.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-11-12 22:38:39,961 INFO L158 Benchmark]: TraceAbstraction took 275.71ms. Allocated memory is still 102.8MB. Free memory was 52.6MB in the beginning and 39.2MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-12 22:38:39,961 INFO L158 Benchmark]: Witness Printer took 4.37ms. Allocated memory is still 102.8MB. Free memory is still 38.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:38:39,965 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 102.8MB. Free memory was 74.7MB in the beginning and 74.6MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 495.72ms. Allocated memory is still 102.8MB. Free memory was 58.1MB in the beginning and 73.6MB in the end (delta: -15.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.86ms. Allocated memory is still 102.8MB. Free memory was 73.6MB in the beginning and 71.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.02ms. Allocated memory is still 102.8MB. Free memory was 71.9MB in the beginning and 70.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 577.87ms. Allocated memory is still 102.8MB. Free memory was 70.2MB in the beginning and 53.0MB in the end (delta: 17.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 275.71ms. Allocated memory is still 102.8MB. Free memory was 52.6MB in the beginning and 39.2MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 4.37ms. Allocated memory is still 102.8MB. Free memory is still 38.9MB. 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: [L322] COND TRUE __VERIFIER_nondet_int() [L323] 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=49, x=49] [L47] COND TRUE !(result >= 0.0f && result < 1.4f) VAL [IN=49, x=49] [L48] reach_error() VAL [IN=49, x=49] - UnprovableResult [Line: 60]: 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, 45 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, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred 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 [2021-11-12 22:38:40,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/bin/utaipan-vmNK8stdcF/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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/bin/utaipan-vmNK8stdcF --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 aff0e850a0570cb9360bb6d36c5ca43ce702912f0a3611fc5fda11d0dcbb5bf1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:38:42,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:38:42,465 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:38:42,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:38:42,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:38:42,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:38:42,502 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:38:42,505 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:38:42,507 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:38:42,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:38:42,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:38:42,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:38:42,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:38:42,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:38:42,515 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:38:42,516 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:38:42,517 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:38:42,518 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:38:42,521 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:38:42,523 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:38:42,525 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:38:42,526 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:38:42,528 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:38:42,529 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:38:42,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:38:42,533 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:38:42,534 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:38:42,535 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:38:42,536 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:38:42,537 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:38:42,537 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:38:42,538 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:38:42,539 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:38:42,540 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:38:42,542 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:38:42,542 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:38:42,543 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:38:42,543 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:38:42,548 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:38:42,559 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:38:42,560 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:38:42,562 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 22:38:42,606 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:38:42,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:38:42,607 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:38:42,608 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:38:42,608 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:38:42,608 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:38:42,608 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:38:42,609 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:38:42,609 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:38:42,609 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:38:42,611 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:38:42,612 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:38:42,612 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:38:42,612 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:38:42,612 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:38:42,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:38:42,613 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:38:42,613 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:38:42,613 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:38:42,613 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:38:42,614 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:38:42,614 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:38:42,614 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:38:42,614 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:38:42,615 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:38:42,615 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:38:42,615 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:38:42,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:38:42,615 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:38:42,616 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:38:42,616 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:38:42,616 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:38:42,616 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:38:42,616 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:38:42,617 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:38:42,617 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:38:42,617 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_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aff0e850a0570cb9360bb6d36c5ca43ce702912f0a3611fc5fda11d0dcbb5bf1 [2021-11-12 22:38:42,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:38:43,005 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:38:43,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:38:43,009 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:38:43,010 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:38:43,011 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c [2021-11-12 22:38:43,069 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/bin/utaipan-vmNK8stdcF/data/0a494b044/c75417b61a3d46e28127410071a36bfa/FLAG9bf5a62bd [2021-11-12 22:38:43,608 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:38:43,608 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c [2021-11-12 22:38:43,622 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/bin/utaipan-vmNK8stdcF/data/0a494b044/c75417b61a3d46e28127410071a36bfa/FLAG9bf5a62bd [2021-11-12 22:38:43,978 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/bin/utaipan-vmNK8stdcF/data/0a494b044/c75417b61a3d46e28127410071a36bfa [2021-11-12 22:38:43,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:38:43,984 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:38:43,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:38:43,987 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:38:43,991 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:38:43,992 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:38:43" (1/1) ... [2021-11-12 22:38:43,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10679667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:43, skipping insertion in model container [2021-11-12 22:38:43,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:38:43" (1/1) ... [2021-11-12 22:38:44,000 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:38:44,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:38:44,207 WARN L228 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_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c[1995,2008] [2021-11-12 22:38:44,212 WARN L228 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_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c[2364,2377] [2021-11-12 22:38:44,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:38:44,278 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:38:44,297 WARN L228 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_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c[1995,2008] [2021-11-12 22:38:44,299 WARN L228 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_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c[2364,2377] [2021-11-12 22:38:44,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:38:44,393 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:38:44,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:44 WrapperNode [2021-11-12 22:38:44,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:38:44,396 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:38:44,396 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:38:44,396 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:38:44,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:44" (1/1) ... [2021-11-12 22:38:44,416 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:44" (1/1) ... [2021-11-12 22:38:44,440 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:38:44,441 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:38:44,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:38:44,442 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:38:44,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:44" (1/1) ... [2021-11-12 22:38:44,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:44" (1/1) ... [2021-11-12 22:38:44,455 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:44" (1/1) ... [2021-11-12 22:38:44,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:44" (1/1) ... [2021-11-12 22:38:44,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:44" (1/1) ... [2021-11-12 22:38:44,470 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:44" (1/1) ... [2021-11-12 22:38:44,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:44" (1/1) ... [2021-11-12 22:38:44,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:38:44,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:38:44,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:38:44,503 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:38:44,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:44" (1/1) ... [2021-11-12 22:38:44,511 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:38:44,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:38:44,549 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:38:44,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:38:44,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:38:44,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:38:44,604 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-12 22:38:44,605 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-12 22:38:44,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:38:44,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:38:44,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 22:38:44,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 22:38:47,302 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:38:47,302 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-12 22:38:47,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:38:47 BoogieIcfgContainer [2021-11-12 22:38:47,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:38:47,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:38:47,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:38:47,311 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:38:47,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:38:43" (1/3) ... [2021-11-12 22:38:47,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17ffc388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:38:47, skipping insertion in model container [2021-11-12 22:38:47,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:44" (2/3) ... [2021-11-12 22:38:47,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17ffc388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:38:47, skipping insertion in model container [2021-11-12 22:38:47,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:38:47" (3/3) ... [2021-11-12 22:38:47,315 INFO L111 eAbstractionObserver]: Analyzing ICFG square_7+soft_float_5a.c.cil.c [2021-11-12 22:38:47,321 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:38:47,321 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-12 22:38:47,372 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:38:47,379 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 22:38:47,379 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-12 22:38:47,398 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 54 states have internal predecessors, (79), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-12 22:38:47,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-12 22:38:47,402 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:47,403 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:38:47,403 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:38:47,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:47,409 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-11-12 22:38:47,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:38:47,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1694882794] [2021-11-12 22:38:47,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:47,422 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:38:47,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:38:47,426 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:38:47,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:38:47,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:47,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 22:38:47,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:38:48,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:48,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:38:48,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:48,059 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:38:48,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1694882794] [2021-11-12 22:38:48,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1694882794] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:38:48,060 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:38:48,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 22:38:48,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468923976] [2021-11-12 22:38:48,063 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:38:48,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 22:38:48,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:38:48,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 22:38:48,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:38:48,097 INFO L87 Difference]: Start difference. First operand has 61 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 54 states have internal predecessors, (79), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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) [2021-11-12 22:38:48,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:48,126 INFO L93 Difference]: Finished difference Result 117 states and 175 transitions. [2021-11-12 22:38:48,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 22:38:48,128 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 [2021-11-12 22:38:48,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:48,136 INFO L225 Difference]: With dead ends: 117 [2021-11-12 22:38:48,136 INFO L226 Difference]: Without dead ends: 52 [2021-11-12 22:38:48,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:38:48,144 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.61ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:48,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 1.61ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 22:38:48,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-11-12 22:38:48,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-11-12 22:38:48,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 45 states have internal predecessors, (62), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-12 22:38:48,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2021-11-12 22:38:48,206 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 71 transitions. Word has length 7 [2021-11-12 22:38:48,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:48,207 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 71 transitions. [2021-11-12 22:38:48,207 INFO L471 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) [2021-11-12 22:38:48,207 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 71 transitions. [2021-11-12 22:38:48,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-12 22:38:48,208 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:48,208 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:38:48,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:38:48,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:38:48,424 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:38:48,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:48,425 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-11-12 22:38:48,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:38:48,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [422866156] [2021-11-12 22:38:48,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:48,427 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:38:48,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:38:48,428 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:38:48,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d0e030-9c19-4af8-b8ef-a6e984e72d2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process