./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float1.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_d264111e-04af-41a3-9986-6b3ab4cc9a92/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d264111e-04af-41a3-9986-6b3ab4cc9a92/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_d264111e-04af-41a3-9986-6b3ab4cc9a92/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d264111e-04af-41a3-9986-6b3ab4cc9a92/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d264111e-04af-41a3-9986-6b3ab4cc9a92/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_d264111e-04af-41a3-9986-6b3ab4cc9a92/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 40f0987d901db247b49723cd7ff4aa66943e9671f8ac5275af8edcf28fe04092 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:14:47,215 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:14:47,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:14:47,300 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:14:47,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:14:47,302 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:14:47,304 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:14:47,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:14:47,310 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:14:47,312 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:14:47,314 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:14:47,316 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:14:47,316 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:14:47,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:14:47,321 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:14:47,323 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:14:47,325 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:14:47,327 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:14:47,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:14:47,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:14:47,337 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:14:47,339 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:14:47,351 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:14:47,358 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:14:47,363 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:14:47,366 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:14:47,367 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:14:47,368 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:14:47,370 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:14:47,373 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:14:47,374 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:14:47,375 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:14:47,378 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:14:47,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:14:47,383 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:14:47,383 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:14:47,385 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:14:47,385 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:14:47,385 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:14:47,387 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:14:47,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:14:47,390 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d264111e-04af-41a3-9986-6b3ab4cc9a92/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-19 05:14:47,452 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:14:47,452 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:14:47,453 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:14:47,454 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:14:47,455 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:14:47,455 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:14:47,456 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:14:47,456 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:14:47,457 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:14:47,457 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:14:47,458 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:14:47,459 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:14:47,459 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:14:47,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:14:47,460 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 05:14:47,460 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:14:47,460 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 05:14:47,461 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:14:47,461 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 05:14:47,461 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:14:47,462 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 05:14:47,462 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:14:47,462 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:14:47,463 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:14:47,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:14:47,463 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:14:47,464 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:14:47,464 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 05:14:47,464 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 05:14:47,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 05:14:47,467 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 05:14:47,467 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 05:14:47,467 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 05:14:47,468 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:14:47,468 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_d264111e-04af-41a3-9986-6b3ab4cc9a92/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d264111e-04af-41a3-9986-6b3ab4cc9a92/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40f0987d901db247b49723cd7ff4aa66943e9671f8ac5275af8edcf28fe04092 [2021-11-19 05:14:47,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:14:47,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:14:47,917 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:14:47,918 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:14:47,919 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:14:47,922 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d264111e-04af-41a3-9986-6b3ab4cc9a92/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/floats-cbmc-regression/float1.c [2021-11-19 05:14:48,022 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d264111e-04af-41a3-9986-6b3ab4cc9a92/bin/uautomizer-ZXIjhQolGL/data/3737e5cae/b3d74e6aa91141d4afda27abb086412a/FLAG69aa4fe8a [2021-11-19 05:14:48,584 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:14:48,585 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d264111e-04af-41a3-9986-6b3ab4cc9a92/sv-benchmarks/c/floats-cbmc-regression/float1.c [2021-11-19 05:14:48,598 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d264111e-04af-41a3-9986-6b3ab4cc9a92/bin/uautomizer-ZXIjhQolGL/data/3737e5cae/b3d74e6aa91141d4afda27abb086412a/FLAG69aa4fe8a [2021-11-19 05:14:48,913 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d264111e-04af-41a3-9986-6b3ab4cc9a92/bin/uautomizer-ZXIjhQolGL/data/3737e5cae/b3d74e6aa91141d4afda27abb086412a [2021-11-19 05:14:48,916 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:14:48,917 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 05:14:48,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:14:48,920 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:14:48,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:14:48,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:14:48" (1/1) ... [2021-11-19 05:14:48,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29f1a344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:48, skipping insertion in model container [2021-11-19 05:14:48,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:14:48" (1/1) ... [2021-11-19 05:14:48,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:14:48,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:14:49,186 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_d264111e-04af-41a3-9986-6b3ab4cc9a92/sv-benchmarks/c/floats-cbmc-regression/float1.c[371,384] [2021-11-19 05:14:49,195 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_d264111e-04af-41a3-9986-6b3ab4cc9a92/sv-benchmarks/c/floats-cbmc-regression/float1.c[525,538] [2021-11-19 05:14:49,197 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:14:49,207 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:14:49,221 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_d264111e-04af-41a3-9986-6b3ab4cc9a92/sv-benchmarks/c/floats-cbmc-regression/float1.c[371,384] [2021-11-19 05:14:49,223 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_d264111e-04af-41a3-9986-6b3ab4cc9a92/sv-benchmarks/c/floats-cbmc-regression/float1.c[525,538] [2021-11-19 05:14:49,224 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:14:49,241 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:14:49,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:49 WrapperNode [2021-11-19 05:14:49,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:14:49,243 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 05:14:49,244 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 05:14:49,244 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 05:14:49,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:49" (1/1) ... [2021-11-19 05:14:49,269 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:49" (1/1) ... [2021-11-19 05:14:49,295 INFO L137 Inliner]: procedures = 11, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24 [2021-11-19 05:14:49,296 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 05:14:49,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:14:49,298 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:14:49,298 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:14:49,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:49" (1/1) ... [2021-11-19 05:14:49,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:49" (1/1) ... [2021-11-19 05:14:49,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:49" (1/1) ... [2021-11-19 05:14:49,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:49" (1/1) ... [2021-11-19 05:14:49,319 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:49" (1/1) ... [2021-11-19 05:14:49,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:49" (1/1) ... [2021-11-19 05:14:49,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:49" (1/1) ... [2021-11-19 05:14:49,334 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:14:49,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:14:49,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:14:49,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:14:49,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:49" (1/1) ... [2021-11-19 05:14:49,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:14:49,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d264111e-04af-41a3-9986-6b3ab4cc9a92/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:14:49,388 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d264111e-04af-41a3-9986-6b3ab4cc9a92/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 05:14:49,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d264111e-04af-41a3-9986-6b3ab4cc9a92/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 05:14:49,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 05:14:49,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:14:49,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:14:49,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 05:14:49,536 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:14:49,539 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:14:49,667 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:14:49,677 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:14:49,677 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 05:14:49,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:14:49 BoogieIcfgContainer [2021-11-19 05:14:49,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:14:49,683 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 05:14:49,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 05:14:49,688 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 05:14:49,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:14:48" (1/3) ... [2021-11-19 05:14:49,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31ce20a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:14:49, skipping insertion in model container [2021-11-19 05:14:49,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:49" (2/3) ... [2021-11-19 05:14:49,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31ce20a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:14:49, skipping insertion in model container [2021-11-19 05:14:49,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:14:49" (3/3) ... [2021-11-19 05:14:49,693 INFO L111 eAbstractionObserver]: Analyzing ICFG float1.c [2021-11-19 05:14:49,707 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 05:14:49,707 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-19 05:14:49,792 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 05:14:49,810 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 05:14:49,810 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-19 05:14:49,834 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 11 states have internal predecessors, (13), 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 05:14:49,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-19 05:14:49,847 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:14:49,848 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-19 05:14:49,849 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:14:49,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:14:49,862 INFO L85 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-11-19 05:14:49,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:14:49,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454567831] [2021-11-19 05:14:49,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:14:49,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:14:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:14:49,996 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 05:14:50,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:14:50,052 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 05:14:50,055 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 05:14:50,057 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-19 05:14:50,061 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-19 05:14:50,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 05:14:50,068 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-19 05:14:50,073 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 05:14:50,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:14:50 BoogieIcfgContainer [2021-11-19 05:14:50,099 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 05:14:50,103 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 05:14:50,104 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 05:14:50,104 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 05:14:50,105 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:14:49" (3/4) ... [2021-11-19 05:14:50,110 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-19 05:14:50,110 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 05:14:50,112 INFO L158 Benchmark]: Toolchain (without parser) took 1194.11ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 49.5MB in the beginning and 57.9MB in the end (delta: -8.5MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2021-11-19 05:14:50,114 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 86.0MB. Free memory was 65.6MB in the beginning and 65.5MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:14:50,115 INFO L158 Benchmark]: CACSL2BoogieTranslator took 322.84ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 49.3MB in the beginning and 81.3MB in the end (delta: -32.0MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. [2021-11-19 05:14:50,117 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.70ms. Allocated memory is still 104.9MB. Free memory was 81.3MB in the beginning and 79.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 05:14:50,123 INFO L158 Benchmark]: Boogie Preprocessor took 37.28ms. Allocated memory is still 104.9MB. Free memory was 79.9MB in the beginning and 78.9MB in the end (delta: 982.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:14:50,126 INFO L158 Benchmark]: RCFGBuilder took 344.57ms. Allocated memory is still 104.9MB. Free memory was 78.9MB in the beginning and 70.6MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 05:14:50,127 INFO L158 Benchmark]: TraceAbstraction took 416.97ms. Allocated memory is still 104.9MB. Free memory was 70.3MB in the beginning and 58.6MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-19 05:14:50,127 INFO L158 Benchmark]: Witness Printer took 6.92ms. Allocated memory is still 104.9MB. Free memory was 58.2MB in the beginning and 57.9MB in the end (delta: 309.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:14:50,139 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 86.0MB. Free memory was 65.6MB in the beginning and 65.5MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 322.84ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 49.3MB in the beginning and 81.3MB in the end (delta: -32.0MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.70ms. Allocated memory is still 104.9MB. Free memory was 81.3MB in the beginning and 79.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.28ms. Allocated memory is still 104.9MB. Free memory was 79.9MB in the beginning and 78.9MB in the end (delta: 982.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 344.57ms. Allocated memory is still 104.9MB. Free memory was 78.9MB in the beginning and 70.6MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 416.97ms. Allocated memory is still 104.9MB. Free memory was 70.3MB in the beginning and 58.6MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 6.92ms. Allocated memory is still 104.9MB. Free memory was 58.2MB in the beginning and 57.9MB in the end (delta: 309.7kB). 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: 12]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 10, overapproximation of someBinaryArithmeticDOUBLEoperation at line 9, overapproximation of to_real at line 8. Possible FailurePath: [L5] double x; [L6] int y; [L8] x=2 [L9] x-=0.6 [L10] y=x [L12] COND TRUE !(y==1) VAL [y=49] [L12] reach_error() VAL [y=49] - UnprovableResult [Line: 19]: 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 1 procedures, 12 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-19 05:14:50,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d264111e-04af-41a3-9986-6b3ab4cc9a92/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_d264111e-04af-41a3-9986-6b3ab4cc9a92/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d264111e-04af-41a3-9986-6b3ab4cc9a92/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_d264111e-04af-41a3-9986-6b3ab4cc9a92/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d264111e-04af-41a3-9986-6b3ab4cc9a92/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d264111e-04af-41a3-9986-6b3ab4cc9a92/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_d264111e-04af-41a3-9986-6b3ab4cc9a92/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 40f0987d901db247b49723cd7ff4aa66943e9671f8ac5275af8edcf28fe04092 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:14:53,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:14:53,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:14:53,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:14:53,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:14:53,359 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:14:53,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:14:53,370 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:14:53,374 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:14:53,381 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:14:53,383 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:14:53,385 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:14:53,386 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:14:53,390 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:14:53,393 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:14:53,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:14:53,401 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:14:53,403 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:14:53,405 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:14:53,420 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:14:53,424 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:14:53,426 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:14:53,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:14:53,434 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:14:53,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:14:53,446 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:14:53,447 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:14:53,450 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:14:53,450 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:14:53,452 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:14:53,453 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:14:53,454 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:14:53,457 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:14:53,458 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:14:53,460 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:14:53,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:14:53,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:14:53,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:14:53,463 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:14:53,466 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:14:53,467 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:14:53,474 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d264111e-04af-41a3-9986-6b3ab4cc9a92/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-19 05:14:53,533 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:14:53,534 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:14:53,535 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:14:53,535 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:14:53,537 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:14:53,537 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:14:53,539 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:14:53,539 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:14:53,540 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:14:53,540 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:14:53,541 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:14:53,542 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:14:53,542 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:14:53,543 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 05:14:53,543 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:14:53,543 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 05:14:53,544 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 05:14:53,544 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 05:14:53,544 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:14:53,545 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 05:14:53,545 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:14:53,545 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 05:14:53,546 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:14:53,546 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:14:53,546 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:14:53,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:14:53,547 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:14:53,547 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:14:53,548 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 05:14:53,548 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-19 05:14:53,548 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 05:14:53,549 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 05:14:53,549 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 05:14:53,550 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 05:14:53,550 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:14:53,550 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 05:14:53,550 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_d264111e-04af-41a3-9986-6b3ab4cc9a92/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d264111e-04af-41a3-9986-6b3ab4cc9a92/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40f0987d901db247b49723cd7ff4aa66943e9671f8ac5275af8edcf28fe04092 [2021-11-19 05:14:54,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:14:54,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:14:54,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:14:54,093 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:14:54,094 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:14:54,096 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d264111e-04af-41a3-9986-6b3ab4cc9a92/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/floats-cbmc-regression/float1.c [2021-11-19 05:14:54,205 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d264111e-04af-41a3-9986-6b3ab4cc9a92/bin/uautomizer-ZXIjhQolGL/data/81a789e45/6c25796c3be44c6bb5e5377de765b23b/FLAG400f46847 [2021-11-19 05:14:54,870 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:14:54,871 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d264111e-04af-41a3-9986-6b3ab4cc9a92/sv-benchmarks/c/floats-cbmc-regression/float1.c [2021-11-19 05:14:54,880 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d264111e-04af-41a3-9986-6b3ab4cc9a92/bin/uautomizer-ZXIjhQolGL/data/81a789e45/6c25796c3be44c6bb5e5377de765b23b/FLAG400f46847 [2021-11-19 05:14:55,216 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d264111e-04af-41a3-9986-6b3ab4cc9a92/bin/uautomizer-ZXIjhQolGL/data/81a789e45/6c25796c3be44c6bb5e5377de765b23b [2021-11-19 05:14:55,220 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:14:55,222 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 05:14:55,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:14:55,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:14:55,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:14:55,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:14:55" (1/1) ... [2021-11-19 05:14:55,233 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f6cd77a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:55, skipping insertion in model container [2021-11-19 05:14:55,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:14:55" (1/1) ... [2021-11-19 05:14:55,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:14:55,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:14:55,498 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_d264111e-04af-41a3-9986-6b3ab4cc9a92/sv-benchmarks/c/floats-cbmc-regression/float1.c[371,384] [2021-11-19 05:14:55,509 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_d264111e-04af-41a3-9986-6b3ab4cc9a92/sv-benchmarks/c/floats-cbmc-regression/float1.c[525,538] [2021-11-19 05:14:55,511 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:14:55,545 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:14:55,567 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_d264111e-04af-41a3-9986-6b3ab4cc9a92/sv-benchmarks/c/floats-cbmc-regression/float1.c[371,384] [2021-11-19 05:14:55,571 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_d264111e-04af-41a3-9986-6b3ab4cc9a92/sv-benchmarks/c/floats-cbmc-regression/float1.c[525,538] [2021-11-19 05:14:55,572 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:14:55,594 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:14:55,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:55 WrapperNode [2021-11-19 05:14:55,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:14:55,597 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 05:14:55,597 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 05:14:55,597 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 05:14:55,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:55" (1/1) ... [2021-11-19 05:14:55,620 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:55" (1/1) ... [2021-11-19 05:14:55,642 INFO L137 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 25 [2021-11-19 05:14:55,643 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 05:14:55,644 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:14:55,645 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:14:55,645 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:14:55,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:55" (1/1) ... [2021-11-19 05:14:55,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:55" (1/1) ... [2021-11-19 05:14:55,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:55" (1/1) ... [2021-11-19 05:14:55,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:55" (1/1) ... [2021-11-19 05:14:55,691 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:55" (1/1) ... [2021-11-19 05:14:55,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:55" (1/1) ... [2021-11-19 05:14:55,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:55" (1/1) ... [2021-11-19 05:14:55,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:14:55,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:14:55,715 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:14:55,715 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:14:55,716 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:55" (1/1) ... [2021-11-19 05:14:55,751 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:14:55,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d264111e-04af-41a3-9986-6b3ab4cc9a92/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:14:55,790 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d264111e-04af-41a3-9986-6b3ab4cc9a92/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 05:14:55,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d264111e-04af-41a3-9986-6b3ab4cc9a92/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 05:14:55,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 05:14:55,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:14:55,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:14:55,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 05:14:55,966 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:14:55,968 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:14:56,671 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:14:56,678 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:14:56,679 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 05:14:56,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:14:56 BoogieIcfgContainer [2021-11-19 05:14:56,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:14:56,683 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 05:14:56,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 05:14:56,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 05:14:56,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:14:55" (1/3) ... [2021-11-19 05:14:56,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4571de84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:14:56, skipping insertion in model container [2021-11-19 05:14:56,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:55" (2/3) ... [2021-11-19 05:14:56,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4571de84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:14:56, skipping insertion in model container [2021-11-19 05:14:56,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:14:56" (3/3) ... [2021-11-19 05:14:56,698 INFO L111 eAbstractionObserver]: Analyzing ICFG float1.c [2021-11-19 05:14:56,720 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 05:14:56,720 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-19 05:14:56,836 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 05:14:56,849 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 05:14:56,849 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-19 05:14:56,872 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 11 states have internal predecessors, (13), 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 05:14:56,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-19 05:14:56,897 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:14:56,898 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-19 05:14:56,899 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:14:56,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:14:56,913 INFO L85 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-11-19 05:14:56,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:14:56,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510598248] [2021-11-19 05:14:56,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:14:56,934 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:14:56,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d264111e-04af-41a3-9986-6b3ab4cc9a92/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:14:56,945 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d264111e-04af-41a3-9986-6b3ab4cc9a92/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:14:56,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d264111e-04af-41a3-9986-6b3ab4cc9a92/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 05:14:57,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:14:57,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 05:14:57,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:14:57,353 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 05:14:57,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:14:57,957 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 05:14:57,958 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:14:57,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510598248] [2021-11-19 05:14:57,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510598248] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:14:57,959 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:14:57,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 05:14:57,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991438489] [2021-11-19 05:14:57,963 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:14:57,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:14:57,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:14:58,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:14:58,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:14:58,022 INFO L87 Difference]: Start difference. First operand has 12 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 11 states have internal predecessors, (13), 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) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 05:14:58,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:14:58,512 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-11-19 05:14:58,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:14:58,515 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 4 [2021-11-19 05:14:58,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:14:58,523 INFO L225 Difference]: With dead ends: 17 [2021-11-19 05:14:58,523 INFO L226 Difference]: Without dead ends: 0 [2021-11-19 05:14:58,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:14:58,532 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 9 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 05:14:58,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 4 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 05:14:58,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-19 05:14:58,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-19 05:14:58,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 05:14:58,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-19 05:14:58,562 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2021-11-19 05:14:58,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:14:58,563 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-19 05:14:58,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 05:14:58,563 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-19 05:14:58,564 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-19 05:14:58,566 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-19 05:14:58,567 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-19 05:14:58,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d264111e-04af-41a3-9986-6b3ab4cc9a92/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 05:14:58,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d264111e-04af-41a3-9986-6b3ab4cc9a92/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:14:58,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-19 05:14:58,775 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-19 05:14:58,775 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-19 05:14:58,776 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-19 05:14:58,776 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-19 05:14:58,776 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-11-19 05:14:58,777 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-11-19 05:14:58,777 INFO L858 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-11-19 05:14:58,777 INFO L858 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2021-11-19 05:14:58,777 INFO L858 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-11-19 05:14:58,778 INFO L858 garLoopResultBuilder]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-11-19 05:14:58,778 INFO L858 garLoopResultBuilder]: For program point L12-3(line 12) no Hoare annotation was computed. [2021-11-19 05:14:58,778 INFO L858 garLoopResultBuilder]: For program point L4(lines 4 20) no Hoare annotation was computed. [2021-11-19 05:14:58,783 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-19 05:14:58,785 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 05:14:58,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:14:58 BoogieIcfgContainer [2021-11-19 05:14:58,792 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 05:14:58,793 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 05:14:58,793 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 05:14:58,794 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 05:14:58,794 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:14:56" (3/4) ... [2021-11-19 05:14:58,799 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-19 05:14:58,823 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-11-19 05:14:58,823 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-19 05:14:58,827 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-19 05:14:58,827 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-19 05:14:58,863 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d264111e-04af-41a3-9986-6b3ab4cc9a92/bin/uautomizer-ZXIjhQolGL/witness.graphml [2021-11-19 05:14:58,868 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 05:14:58,873 INFO L158 Benchmark]: Toolchain (without parser) took 3647.47ms. Allocated memory is still 73.4MB. Free memory was 51.2MB in the beginning and 47.1MB in the end (delta: 4.1MB). Peak memory consumption was 2.7MB. Max. memory is 16.1GB. [2021-11-19 05:14:58,874 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 52.4MB. Free memory is still 32.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:14:58,875 INFO L158 Benchmark]: CACSL2BoogieTranslator took 370.73ms. Allocated memory is still 73.4MB. Free memory was 51.1MB in the beginning and 41.2MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 05:14:58,875 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.64ms. Allocated memory is still 73.4MB. Free memory was 41.0MB in the beginning and 39.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:14:58,876 INFO L158 Benchmark]: Boogie Preprocessor took 67.10ms. Allocated memory is still 73.4MB. Free memory was 39.7MB in the beginning and 56.4MB in the end (delta: -16.8MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2021-11-19 05:14:58,877 INFO L158 Benchmark]: RCFGBuilder took 968.16ms. Allocated memory is still 73.4MB. Free memory was 56.4MB in the beginning and 48.2MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 05:14:58,878 INFO L158 Benchmark]: TraceAbstraction took 2108.74ms. Allocated memory is still 73.4MB. Free memory was 47.9MB in the beginning and 49.7MB in the end (delta: -1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:14:58,878 INFO L158 Benchmark]: Witness Printer took 75.65ms. Allocated memory is still 73.4MB. Free memory was 49.6MB in the beginning and 47.1MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-19 05:14:58,882 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 52.4MB. Free memory is still 32.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 370.73ms. Allocated memory is still 73.4MB. Free memory was 51.1MB in the beginning and 41.2MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.64ms. Allocated memory is still 73.4MB. Free memory was 41.0MB in the beginning and 39.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 67.10ms. Allocated memory is still 73.4MB. Free memory was 39.7MB in the beginning and 56.4MB in the end (delta: -16.8MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * RCFGBuilder took 968.16ms. Allocated memory is still 73.4MB. Free memory was 56.4MB in the beginning and 48.2MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2108.74ms. Allocated memory is still 73.4MB. Free memory was 47.9MB in the beginning and 49.7MB in the end (delta: -1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 75.65ms. Allocated memory is still 73.4MB. Free memory was 49.6MB in the beginning and 47.1MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. 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 - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 2.0s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4 IncrementalHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 3 mSDtfsCounter, 4 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 30 SizeOfPredicates, 3 NumberOfNonLiveVariables, 19 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-19 05:14:58,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d264111e-04af-41a3-9986-6b3ab4cc9a92/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 Writing output log to file Ultimate.log Result: TRUE