./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_6+soft_float_5a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f138b9d5-c00b-4247-895e-155f30a22a87/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f138b9d5-c00b-4247-895e-155f30a22a87/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f138b9d5-c00b-4247-895e-155f30a22a87/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f138b9d5-c00b-4247-895e-155f30a22a87/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_6+soft_float_5a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f138b9d5-c00b-4247-895e-155f30a22a87/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f138b9d5-c00b-4247-895e-155f30a22a87/bin/uautomizer-ZXIjhQolGL --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5c4c867e245be659b2db84171c62e45b03155ac4269b1a7d8c363c8f991a60db --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:04:26,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:04:26,368 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:04:26,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:04:26,438 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:04:26,443 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:04:26,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:04:26,451 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:04:26,454 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:04:26,461 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:04:26,462 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:04:26,465 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:04:26,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:04:26,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:04:26,471 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:04:26,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:04:26,477 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:04:26,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:04:26,485 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:04:26,496 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:04:26,499 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:04:26,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:04:26,505 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:04:26,506 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:04:26,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:04:26,517 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:04:26,518 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:04:26,520 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:04:26,521 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:04:26,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:04:26,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:04:26,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:04:26,527 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:04:26,529 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:04:26,531 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:04:26,531 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:04:26,532 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:04:26,532 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:04:26,533 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:04:26,534 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:04:26,535 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:04:26,536 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f138b9d5-c00b-4247-895e-155f30a22a87/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-19 05:04:26,586 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:04:26,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:04:26,587 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:04:26,587 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:04:26,588 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:04:26,589 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:04:26,589 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:04:26,590 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:04:26,590 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:04:26,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:04:26,592 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:04:26,592 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:04:26,592 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:04:26,592 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:04:26,593 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 05:04:26,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:04:26,593 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 05:04:26,593 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:04:26,594 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 05:04:26,594 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:04:26,594 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 05:04:26,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:04:26,595 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:04:26,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:04:26,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:04:26,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:04:26,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:04:26,596 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 05:04:26,597 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 05:04:26,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 05:04:26,599 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 05:04:26,599 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 05:04:26,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 05:04:26,600 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:04:26,600 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_f138b9d5-c00b-4247-895e-155f30a22a87/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f138b9d5-c00b-4247-895e-155f30a22a87/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c4c867e245be659b2db84171c62e45b03155ac4269b1a7d8c363c8f991a60db [2021-11-19 05:04:26,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:04:27,004 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:04:27,007 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:04:27,008 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:04:27,009 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:04:27,011 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f138b9d5-c00b-4247-895e-155f30a22a87/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/combinations/square_6+soft_float_5a.c.cil.c [2021-11-19 05:04:27,091 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f138b9d5-c00b-4247-895e-155f30a22a87/bin/uautomizer-ZXIjhQolGL/data/74b4ce392/d373fab7d64a49d7b6c199115e1fde19/FLAG78df4cd03 [2021-11-19 05:04:27,685 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:04:27,685 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f138b9d5-c00b-4247-895e-155f30a22a87/sv-benchmarks/c/combinations/square_6+soft_float_5a.c.cil.c [2021-11-19 05:04:27,694 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f138b9d5-c00b-4247-895e-155f30a22a87/bin/uautomizer-ZXIjhQolGL/data/74b4ce392/d373fab7d64a49d7b6c199115e1fde19/FLAG78df4cd03 [2021-11-19 05:04:27,999 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f138b9d5-c00b-4247-895e-155f30a22a87/bin/uautomizer-ZXIjhQolGL/data/74b4ce392/d373fab7d64a49d7b6c199115e1fde19 [2021-11-19 05:04:28,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:04:28,003 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 05:04:28,005 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:04:28,006 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:04:28,018 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:04:28,019 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:04:28" (1/1) ... [2021-11-19 05:04:28,021 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65f68d39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:28, skipping insertion in model container [2021-11-19 05:04:28,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:04:28" (1/1) ... [2021-11-19 05:04:28,029 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:04:28,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:04:28,271 WARN L230 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_f138b9d5-c00b-4247-895e-155f30a22a87/sv-benchmarks/c/combinations/square_6+soft_float_5a.c.cil.c[1997,2010] [2021-11-19 05:04:28,277 WARN L230 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_f138b9d5-c00b-4247-895e-155f30a22a87/sv-benchmarks/c/combinations/square_6+soft_float_5a.c.cil.c[2366,2379] [2021-11-19 05:04:28,333 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:04:28,342 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:04:28,359 WARN L230 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_f138b9d5-c00b-4247-895e-155f30a22a87/sv-benchmarks/c/combinations/square_6+soft_float_5a.c.cil.c[1997,2010] [2021-11-19 05:04:28,364 WARN L230 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_f138b9d5-c00b-4247-895e-155f30a22a87/sv-benchmarks/c/combinations/square_6+soft_float_5a.c.cil.c[2366,2379] [2021-11-19 05:04:28,399 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:04:28,414 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:04:28,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:28 WrapperNode [2021-11-19 05:04:28,415 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:04:28,416 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 05:04:28,416 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 05:04:28,416 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 05:04:28,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:28" (1/1) ... [2021-11-19 05:04:28,447 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:28" (1/1) ... [2021-11-19 05:04:28,474 INFO L137 Inliner]: procedures = 27, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 133 [2021-11-19 05:04:28,475 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 05:04:28,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:04:28,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:04:28,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:04:28,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:28" (1/1) ... [2021-11-19 05:04:28,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:28" (1/1) ... [2021-11-19 05:04:28,489 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:28" (1/1) ... [2021-11-19 05:04:28,489 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:28" (1/1) ... [2021-11-19 05:04:28,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:28" (1/1) ... [2021-11-19 05:04:28,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:28" (1/1) ... [2021-11-19 05:04:28,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:28" (1/1) ... [2021-11-19 05:04:28,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:04:28,518 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:04:28,519 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:04:28,519 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:04:28,520 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:28" (1/1) ... [2021-11-19 05:04:28,543 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:04:28,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f138b9d5-c00b-4247-895e-155f30a22a87/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:04:28,600 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f138b9d5-c00b-4247-895e-155f30a22a87/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 05:04:28,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f138b9d5-c00b-4247-895e-155f30a22a87/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 05:04:28,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 05:04:28,660 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-19 05:04:28,660 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-19 05:04:28,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 05:04:28,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:04:28,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:04:28,661 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 05:04:28,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 05:04:28,743 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:04:28,745 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:04:29,057 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:04:29,065 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:04:29,067 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-19 05:04:29,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:04:29 BoogieIcfgContainer [2021-11-19 05:04:29,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:04:29,072 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 05:04:29,073 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 05:04:29,076 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 05:04:29,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:04:28" (1/3) ... [2021-11-19 05:04:29,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c0babfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:04:29, skipping insertion in model container [2021-11-19 05:04:29,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:28" (2/3) ... [2021-11-19 05:04:29,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c0babfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:04:29, skipping insertion in model container [2021-11-19 05:04:29,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:04:29" (3/3) ... [2021-11-19 05:04:29,081 INFO L111 eAbstractionObserver]: Analyzing ICFG square_6+soft_float_5a.c.cil.c [2021-11-19 05:04:29,087 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 05:04:29,088 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-19 05:04:29,165 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 05:04:29,173 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=PETRI_NET, 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 [2021-11-19 05:04:29,173 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-19 05:04:29,196 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) [2021-11-19 05:04:29,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 05:04:29,201 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:04:29,202 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:04:29,202 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:04:29,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:04:29,209 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-11-19 05:04:29,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:04:29,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524066121] [2021-11-19 05:04:29,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:04:29,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:04:29,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:29,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:04:29,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:04:29,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524066121] [2021-11-19 05:04:29,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524066121] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:04:29,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:04:29,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 05:04:29,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198263003] [2021-11-19 05:04:29,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:04:29,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 05:04:29,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:04:29,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 05:04:29,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 05:04:29,489 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) [2021-11-19 05:04:29,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:04:29,552 INFO L93 Difference]: Finished difference Result 117 states and 175 transitions. [2021-11-19 05:04:29,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 05:04:29,555 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 [2021-11-19 05:04:29,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:04:29,570 INFO L225 Difference]: With dead ends: 117 [2021-11-19 05:04:29,571 INFO L226 Difference]: Without dead ends: 52 [2021-11-19 05:04:29,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 05:04:29,589 INFO L933 BasicCegarLoop]: 82 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, 82 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 [2021-11-19 05:04:29,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:04:29,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-11-19 05:04:29,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-11-19 05:04:29,663 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) [2021-11-19 05:04:29,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2021-11-19 05:04:29,671 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 71 transitions. Word has length 7 [2021-11-19 05:04:29,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:04:29,672 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 71 transitions. [2021-11-19 05:04:29,672 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) [2021-11-19 05:04:29,673 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 71 transitions. [2021-11-19 05:04:29,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 05:04:29,674 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:04:29,674 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:04:29,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 05:04:29,675 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:04:29,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:04:29,679 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-11-19 05:04:29,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:04:29,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826317668] [2021-11-19 05:04:29,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:04:29,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:04:29,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:04:29,718 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 05:04:29,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:04:29,765 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 05:04:29,766 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 05:04:29,768 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-19 05:04:29,770 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-19 05:04:29,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 05:04:29,775 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-19 05:04:29,779 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 05:04:29,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:04:29 BoogieIcfgContainer [2021-11-19 05:04:29,810 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 05:04:29,811 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 05:04:29,811 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 05:04:29,811 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 05:04:29,812 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:04:29" (3/4) ... [2021-11-19 05:04:29,816 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-19 05:04:29,816 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 05:04:29,819 INFO L158 Benchmark]: Toolchain (without parser) took 1813.69ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 63.0MB in the beginning and 87.6MB in the end (delta: -24.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:04:29,820 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 98.6MB. Free memory was 69.5MB in the beginning and 69.5MB in the end (delta: 28.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:04:29,823 INFO L158 Benchmark]: CACSL2BoogieTranslator took 409.83ms. Allocated memory is still 98.6MB. Free memory was 63.0MB in the beginning and 69.5MB in the end (delta: -6.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 05:04:29,824 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.75ms. Allocated memory is still 98.6MB. Free memory was 69.5MB in the beginning and 67.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 05:04:29,828 INFO L158 Benchmark]: Boogie Preprocessor took 42.16ms. Allocated memory is still 98.6MB. Free memory was 67.7MB in the beginning and 66.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 05:04:29,828 INFO L158 Benchmark]: RCFGBuilder took 551.91ms. Allocated memory is still 98.6MB. Free memory was 66.2MB in the beginning and 52.7MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-19 05:04:29,829 INFO L158 Benchmark]: TraceAbstraction took 737.30ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 52.0MB in the beginning and 88.3MB in the end (delta: -36.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:04:29,829 INFO L158 Benchmark]: Witness Printer took 5.69ms. Allocated memory is still 119.5MB. Free memory was 88.3MB in the beginning and 87.6MB in the end (delta: 676.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:04:29,839 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 98.6MB. Free memory was 69.5MB in the beginning and 69.5MB in the end (delta: 28.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 409.83ms. Allocated memory is still 98.6MB. Free memory was 63.0MB in the beginning and 69.5MB in the end (delta: -6.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.75ms. Allocated memory is still 98.6MB. Free memory was 69.5MB in the beginning and 67.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.16ms. Allocated memory is still 98.6MB. Free memory was 67.7MB in the beginning and 66.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 551.91ms. Allocated memory is still 98.6MB. Free memory was 66.2MB in the beginning and 52.7MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 737.30ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 52.0MB in the beginning and 88.3MB in the end (delta: -36.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.69ms. Allocated memory is still 119.5MB. Free memory was 88.3MB in the beginning and 87.6MB in the end (delta: 676.4kB). 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) VAL [\old(cond)=1, cond=1] [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 < 1.399f) 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, 61 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 82 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 82 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2021-11-19 05:04:29,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f138b9d5-c00b-4247-895e-155f30a22a87/bin/uautomizer-ZXIjhQolGL/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_f138b9d5-c00b-4247-895e-155f30a22a87/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f138b9d5-c00b-4247-895e-155f30a22a87/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f138b9d5-c00b-4247-895e-155f30a22a87/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f138b9d5-c00b-4247-895e-155f30a22a87/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_6+soft_float_5a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f138b9d5-c00b-4247-895e-155f30a22a87/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f138b9d5-c00b-4247-895e-155f30a22a87/bin/uautomizer-ZXIjhQolGL --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5c4c867e245be659b2db84171c62e45b03155ac4269b1a7d8c363c8f991a60db --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:04:32,654 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:04:32,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:04:32,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:04:32,696 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:04:32,700 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:04:32,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:04:32,711 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:04:32,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:04:32,715 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:04:32,716 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:04:32,718 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:04:32,718 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:04:32,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:04:32,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:04:32,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:04:32,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:04:32,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:04:32,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:04:32,731 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:04:32,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:04:32,739 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:04:32,741 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:04:32,743 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:04:32,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:04:32,755 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:04:32,756 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:04:32,757 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:04:32,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:04:32,761 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:04:32,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:04:32,762 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:04:32,764 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:04:32,766 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:04:32,785 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:04:32,785 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:04:32,786 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:04:32,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:04:32,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:04:32,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:04:32,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:04:32,792 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f138b9d5-c00b-4247-895e-155f30a22a87/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-19 05:04:32,833 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:04:32,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:04:32,834 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:04:32,834 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:04:32,835 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:04:32,836 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:04:32,837 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:04:32,837 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:04:32,838 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:04:32,838 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:04:32,839 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:04:32,839 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:04:32,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:04:32,840 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 05:04:32,840 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:04:32,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 05:04:32,841 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 05:04:32,841 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 05:04:32,841 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:04:32,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 05:04:32,842 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:04:32,842 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 05:04:32,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:04:32,843 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:04:32,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:04:32,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:04:32,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:04:32,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:04:32,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 05:04:32,845 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-19 05:04:32,845 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 05:04:32,845 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 05:04:32,846 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 05:04:32,846 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 05:04:32,846 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:04:32,846 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 05:04:32,847 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_f138b9d5-c00b-4247-895e-155f30a22a87/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f138b9d5-c00b-4247-895e-155f30a22a87/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c4c867e245be659b2db84171c62e45b03155ac4269b1a7d8c363c8f991a60db [2021-11-19 05:04:33,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:04:33,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:04:33,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:04:33,301 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:04:33,301 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:04:33,304 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f138b9d5-c00b-4247-895e-155f30a22a87/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/combinations/square_6+soft_float_5a.c.cil.c [2021-11-19 05:04:33,384 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f138b9d5-c00b-4247-895e-155f30a22a87/bin/uautomizer-ZXIjhQolGL/data/e72e50159/1d540773713f48acbca7d8f608ede007/FLAGa442d93f0 [2021-11-19 05:04:34,065 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:04:34,072 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f138b9d5-c00b-4247-895e-155f30a22a87/sv-benchmarks/c/combinations/square_6+soft_float_5a.c.cil.c [2021-11-19 05:04:34,086 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f138b9d5-c00b-4247-895e-155f30a22a87/bin/uautomizer-ZXIjhQolGL/data/e72e50159/1d540773713f48acbca7d8f608ede007/FLAGa442d93f0 [2021-11-19 05:04:34,361 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f138b9d5-c00b-4247-895e-155f30a22a87/bin/uautomizer-ZXIjhQolGL/data/e72e50159/1d540773713f48acbca7d8f608ede007 [2021-11-19 05:04:34,364 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:04:34,366 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 05:04:34,368 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:04:34,368 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:04:34,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:04:34,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:04:34" (1/1) ... [2021-11-19 05:04:34,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2af4545e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:34, skipping insertion in model container [2021-11-19 05:04:34,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:04:34" (1/1) ... [2021-11-19 05:04:34,397 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:04:34,433 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:04:34,593 WARN L230 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_f138b9d5-c00b-4247-895e-155f30a22a87/sv-benchmarks/c/combinations/square_6+soft_float_5a.c.cil.c[1997,2010] [2021-11-19 05:04:34,598 WARN L230 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_f138b9d5-c00b-4247-895e-155f30a22a87/sv-benchmarks/c/combinations/square_6+soft_float_5a.c.cil.c[2366,2379] [2021-11-19 05:04:34,645 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:04:34,683 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:04:34,727 WARN L230 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_f138b9d5-c00b-4247-895e-155f30a22a87/sv-benchmarks/c/combinations/square_6+soft_float_5a.c.cil.c[1997,2010] [2021-11-19 05:04:34,728 WARN L230 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_f138b9d5-c00b-4247-895e-155f30a22a87/sv-benchmarks/c/combinations/square_6+soft_float_5a.c.cil.c[2366,2379] [2021-11-19 05:04:34,794 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:04:34,816 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:04:34,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:34 WrapperNode [2021-11-19 05:04:34,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:04:34,818 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 05:04:34,818 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 05:04:34,818 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 05:04:34,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:34" (1/1) ... [2021-11-19 05:04:34,845 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:34" (1/1) ... [2021-11-19 05:04:34,874 INFO L137 Inliner]: procedures = 28, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 129 [2021-11-19 05:04:34,878 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 05:04:34,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:04:34,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:04:34,880 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:04:34,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:34" (1/1) ... [2021-11-19 05:04:34,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:34" (1/1) ... [2021-11-19 05:04:34,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:34" (1/1) ... [2021-11-19 05:04:34,900 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:34" (1/1) ... [2021-11-19 05:04:34,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:34" (1/1) ... [2021-11-19 05:04:34,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:34" (1/1) ... [2021-11-19 05:04:34,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:34" (1/1) ... [2021-11-19 05:04:34,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:04:34,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:04:34,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:04:34,951 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:04:34,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:34" (1/1) ... [2021-11-19 05:04:34,967 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:04:34,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f138b9d5-c00b-4247-895e-155f30a22a87/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:04:34,992 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f138b9d5-c00b-4247-895e-155f30a22a87/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 05:04:35,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f138b9d5-c00b-4247-895e-155f30a22a87/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 05:04:35,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 05:04:35,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 05:04:35,044 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-19 05:04:35,045 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-19 05:04:35,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:04:35,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:04:35,045 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 05:04:35,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 05:04:35,178 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:04:35,180 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:04:37,696 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:04:37,704 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:04:37,710 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-19 05:04:37,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:04:37 BoogieIcfgContainer [2021-11-19 05:04:37,713 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:04:37,715 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 05:04:37,715 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 05:04:37,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 05:04:37,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:04:34" (1/3) ... [2021-11-19 05:04:37,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@577fac39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:04:37, skipping insertion in model container [2021-11-19 05:04:37,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:34" (2/3) ... [2021-11-19 05:04:37,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@577fac39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:04:37, skipping insertion in model container [2021-11-19 05:04:37,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:04:37" (3/3) ... [2021-11-19 05:04:37,722 INFO L111 eAbstractionObserver]: Analyzing ICFG square_6+soft_float_5a.c.cil.c [2021-11-19 05:04:37,730 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 05:04:37,733 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-19 05:04:37,790 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 05:04:37,798 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=PETRI_NET, 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 [2021-11-19 05:04:37,798 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-19 05:04:37,816 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) [2021-11-19 05:04:37,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 05:04:37,820 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:04:37,821 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:04:37,822 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:04:37,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:04:37,828 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-11-19 05:04:37,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:04:37,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [704676949] [2021-11-19 05:04:37,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:04:37,850 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:04:37,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f138b9d5-c00b-4247-895e-155f30a22a87/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:04:37,853 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f138b9d5-c00b-4247-895e-155f30a22a87/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:04:37,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f138b9d5-c00b-4247-895e-155f30a22a87/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 05:04:38,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:38,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 05:04:38,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:04:38,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:04:38,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:04:38,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:04:38,508 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:04:38,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [704676949] [2021-11-19 05:04:38,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [704676949] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:04:38,509 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:04:38,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 05:04:38,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248316978] [2021-11-19 05:04:38,512 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:04:38,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 05:04:38,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:04:38,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 05:04:38,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 05:04:38,550 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) [2021-11-19 05:04:38,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:04:38,605 INFO L93 Difference]: Finished difference Result 117 states and 175 transitions. [2021-11-19 05:04:38,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 05:04:38,607 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 [2021-11-19 05:04:38,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:04:38,619 INFO L225 Difference]: With dead ends: 117 [2021-11-19 05:04:38,619 INFO L226 Difference]: Without dead ends: 52 [2021-11-19 05:04:38,625 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 [2021-11-19 05:04:38,632 INFO L933 BasicCegarLoop]: 82 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, 82 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 [2021-11-19 05:04:38,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:04:38,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-11-19 05:04:38,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-11-19 05:04:38,691 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) [2021-11-19 05:04:38,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2021-11-19 05:04:38,695 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 71 transitions. Word has length 7 [2021-11-19 05:04:38,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:04:38,696 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 71 transitions. [2021-11-19 05:04:38,696 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) [2021-11-19 05:04:38,696 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 71 transitions. [2021-11-19 05:04:38,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 05:04:38,697 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:04:38,697 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:04:38,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f138b9d5-c00b-4247-895e-155f30a22a87/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 05:04:38,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f138b9d5-c00b-4247-895e-155f30a22a87/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:04:38,904 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:04:38,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:04:38,905 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-11-19 05:04:38,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:04:38,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1481594898] [2021-11-19 05:04:38,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:04:38,906 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:04:38,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f138b9d5-c00b-4247-895e-155f30a22a87/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:04:38,911 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f138b9d5-c00b-4247-895e-155f30a22a87/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:04:38,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f138b9d5-c00b-4247-895e-155f30a22a87/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 05:17:21,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:17:21,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 05:17:21,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:17:37,207 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0) (= |c_ULTIMATE.start_main1_~result~0#1| (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-19 05:18:27,612 WARN L838 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (let ((.cse0 (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse1 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)))) (or (not (fp.geq .cse0 (_ +zero 8 24))) (not (fp.lt .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1399.0 1000.0)))))) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse1)))) is different from false [2021-11-19 05:18:29,661 WARN L860 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (let ((.cse0 (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse1 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)))) (or (not (fp.geq .cse0 (_ +zero 8 24))) (not (fp.lt .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1399.0 1000.0)))))) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse1)))) is different from true [2021-11-19 05:18:29,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:18:29,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:18:40,350 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)))) (and (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 1399.0 1000.0))) (fp.geq .cse0 (_ +zero 8 24)))) is different from false [2021-11-19 05:18:42,419 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)))) (and (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 1399.0 1000.0))) (fp.geq .cse0 (_ +zero 8 24)))) is different from true [2021-11-19 05:18:57,279 WARN L838 $PredicateComparison]: unable to prove that (or (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32)) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)))) (and (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 1399.0 1000.0))) (fp.geq .cse0 (_ +zero 8 24))))) is different from false [2021-11-19 05:18:59,355 WARN L860 $PredicateComparison]: unable to prove that (or (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32)) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)))) (and (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 1399.0 1000.0))) (fp.geq .cse0 (_ +zero 8 24))))) is different from true