./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/square_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/bin/uautomizer-ug76WZFUDN --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 c5accd8423b70ca59158b13da79e2b7f06e66e009ebcbae27877bbff47ee55bb --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:01:54,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:01:54,205 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:01:54,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:01:54,229 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:01:54,230 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:01:54,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:01:54,234 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:01:54,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:01:54,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:01:54,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:01:54,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:01:54,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:01:54,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:01:54,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:01:54,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:01:54,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:01:54,248 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:01:54,251 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:01:54,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:01:54,255 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:01:54,257 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:01:54,258 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:01:54,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:01:54,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:01:54,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:01:54,265 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:01:54,266 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:01:54,267 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:01:54,268 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:01:54,268 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:01:54,270 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:01:54,271 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:01:54,272 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:01:54,273 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:01:54,274 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:01:54,275 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:01:54,275 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:01:54,276 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:01:54,277 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:01:54,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:01:54,279 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 12:01:54,306 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:01:54,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:01:54,307 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:01:54,307 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:01:54,308 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:01:54,308 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:01:54,309 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:01:54,310 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:01:54,310 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:01:54,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:01:54,311 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:01:54,311 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:01:54,311 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:01:54,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:01:54,312 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:01:54,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:01:54,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:01:54,313 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:01:54,313 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:01:54,313 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:01:54,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:01:54,314 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:01:54,314 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:01:54,315 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:01:54,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:01:54,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:01:54,316 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:01:54,316 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:01:54,316 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:01:54,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:01:54,317 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:01:54,317 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:01:54,318 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:01:54,318 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_f67e3062-d4c4-4966-999d-02001f2260e9/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5accd8423b70ca59158b13da79e2b7f06e66e009ebcbae27877bbff47ee55bb [2022-11-20 12:01:54,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:01:54,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:01:54,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:01:54,715 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:01:54,715 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:01:54,717 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/floats-cdfpl/square_3.i [2022-11-20 12:01:57,763 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:01:58,014 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:01:58,015 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/sv-benchmarks/c/floats-cdfpl/square_3.i [2022-11-20 12:01:58,021 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/bin/uautomizer-ug76WZFUDN/data/f56c08ea4/ea91f073ef18402697f593bb2bba8709/FLAGd1106f1a8 [2022-11-20 12:01:58,036 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/bin/uautomizer-ug76WZFUDN/data/f56c08ea4/ea91f073ef18402697f593bb2bba8709 [2022-11-20 12:01:58,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:01:58,044 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:01:58,048 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:01:58,048 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:01:58,051 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:01:58,052 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:01:58" (1/1) ... [2022-11-20 12:01:58,053 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@780061c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:01:58, skipping insertion in model container [2022-11-20 12:01:58,054 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:01:58" (1/1) ... [2022-11-20 12:01:58,061 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:01:58,078 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:01:58,269 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/sv-benchmarks/c/floats-cdfpl/square_3.i[1629,1642] [2022-11-20 12:01:58,273 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:01:58,287 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:01:58,302 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/sv-benchmarks/c/floats-cdfpl/square_3.i[1629,1642] [2022-11-20 12:01:58,303 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:01:58,316 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:01:58,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:01:58 WrapperNode [2022-11-20 12:01:58,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:01:58,318 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:01:58,318 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:01:58,319 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:01:58,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:01:58" (1/1) ... [2022-11-20 12:01:58,334 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:01:58" (1/1) ... [2022-11-20 12:01:58,350 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2022-11-20 12:01:58,351 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:01:58,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:01:58,352 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:01:58,352 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:01:58,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:01:58" (1/1) ... [2022-11-20 12:01:58,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:01:58" (1/1) ... [2022-11-20 12:01:58,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:01:58" (1/1) ... [2022-11-20 12:01:58,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:01:58" (1/1) ... [2022-11-20 12:01:58,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:01:58" (1/1) ... [2022-11-20 12:01:58,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:01:58" (1/1) ... [2022-11-20 12:01:58,372 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:01:58" (1/1) ... [2022-11-20 12:01:58,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:01:58" (1/1) ... [2022-11-20 12:01:58,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:01:58,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:01:58,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:01:58,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:01:58,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:01:58" (1/1) ... [2022-11-20 12:01:58,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:01:58,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:01:58,414 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:01:58,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:01:58,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:01:58,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:01:58,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:01:58,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:01:58,523 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:01:58,525 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:01:58,615 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:01:58,621 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:01:58,622 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 12:01:58,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:01:58 BoogieIcfgContainer [2022-11-20 12:01:58,624 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:01:58,627 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:01:58,627 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:01:58,630 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:01:58,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:01:58" (1/3) ... [2022-11-20 12:01:58,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c11482b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:01:58, skipping insertion in model container [2022-11-20 12:01:58,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:01:58" (2/3) ... [2022-11-20 12:01:58,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c11482b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:01:58, skipping insertion in model container [2022-11-20 12:01:58,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:01:58" (3/3) ... [2022-11-20 12:01:58,634 INFO L112 eAbstractionObserver]: Analyzing ICFG square_3.i [2022-11-20 12:01:58,654 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:01:58,654 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:01:58,713 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:01:58,720 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@406d9f33, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:01:58,721 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 12:01:58,725 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:58,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 12:01:58,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:01:58,731 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 12:01:58,731 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:01:58,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:58,736 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2022-11-20 12:01:58,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:01:58,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765204620] [2022-11-20 12:01:58,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:58,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:01:58,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:58,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:01:58,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:01:58,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765204620] [2022-11-20 12:01:58,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765204620] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:01:58,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:01:58,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:01:58,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394147025] [2022-11-20 12:01:58,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:01:58,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 12:01:58,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:01:58,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 12:01:58,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 12:01:58,947 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2022-11-20 12:01:58,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:01:58,964 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-11-20 12:01:58,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 12:01:58,966 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 6 [2022-11-20 12:01:58,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:01:58,974 INFO L225 Difference]: With dead ends: 19 [2022-11-20 12:01:58,975 INFO L226 Difference]: Without dead ends: 7 [2022-11-20 12:01:58,979 INFO L412 NwaCegarLoop]: 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 [2022-11-20 12:01:58,987 INFO L413 NwaCegarLoop]: 10 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, 10 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:01:58,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:01:59,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2022-11-20 12:01:59,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2022-11-20 12:01:59,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 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) [2022-11-20 12:01:59,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2022-11-20 12:01:59,019 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2022-11-20 12:01:59,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:01:59,019 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2022-11-20 12:01:59,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2022-11-20 12:01:59,020 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2022-11-20 12:01:59,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 12:01:59,020 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:01:59,020 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 12:01:59,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:01:59,021 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:01:59,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:59,022 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2022-11-20 12:01:59,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:01:59,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854985033] [2022-11-20 12:01:59,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:59,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:01:59,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:01:59,046 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:01:59,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:01:59,073 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:01:59,073 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 12:01:59,075 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 12:01:59,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:01:59,080 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-20 12:01:59,085 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 12:01:59,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 12:01:59 BoogieIcfgContainer [2022-11-20 12:01:59,112 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 12:01:59,113 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 12:01:59,113 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 12:01:59,113 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 12:01:59,113 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:01:58" (3/4) ... [2022-11-20 12:01:59,116 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 12:01:59,117 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 12:01:59,117 INFO L158 Benchmark]: Toolchain (without parser) took 1073.12ms. Allocated memory is still 186.6MB. Free memory was 152.2MB in the beginning and 106.7MB in the end (delta: 45.4MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2022-11-20 12:01:59,118 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 146.8MB. Free memory was 91.5MB in the beginning and 91.4MB in the end (delta: 142.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:01:59,118 INFO L158 Benchmark]: CACSL2BoogieTranslator took 269.87ms. Allocated memory is still 186.6MB. Free memory was 152.2MB in the beginning and 141.8MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 12:01:59,119 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.71ms. Allocated memory is still 186.6MB. Free memory was 141.8MB in the beginning and 140.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:01:59,120 INFO L158 Benchmark]: Boogie Preprocessor took 22.56ms. Allocated memory is still 186.6MB. Free memory was 140.3MB in the beginning and 139.4MB in the end (delta: 855.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:01:59,120 INFO L158 Benchmark]: RCFGBuilder took 249.30ms. Allocated memory is still 186.6MB. Free memory was 139.4MB in the beginning and 130.4MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 12:01:59,123 INFO L158 Benchmark]: TraceAbstraction took 485.43ms. Allocated memory is still 186.6MB. Free memory was 129.8MB in the beginning and 107.3MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-20 12:01:59,123 INFO L158 Benchmark]: Witness Printer took 4.09ms. Allocated memory is still 186.6MB. Free memory was 107.3MB in the beginning and 106.7MB in the end (delta: 593.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:01:59,133 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 146.8MB. Free memory was 91.5MB in the beginning and 91.4MB in the end (delta: 142.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 269.87ms. Allocated memory is still 186.6MB. Free memory was 152.2MB in the beginning and 141.8MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.71ms. Allocated memory is still 186.6MB. Free memory was 141.8MB in the beginning and 140.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.56ms. Allocated memory is still 186.6MB. Free memory was 140.3MB in the beginning and 139.4MB in the end (delta: 855.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 249.30ms. Allocated memory is still 186.6MB. Free memory was 139.4MB in the beginning and 130.4MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 485.43ms. Allocated memory is still 186.6MB. Free memory was 129.8MB in the beginning and 107.3MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 4.09ms. Allocated memory is still 186.6MB. Free memory was 107.3MB in the beginning and 106.7MB in the end (delta: 593.6kB). 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: 38]: 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 37, overapproximation of someBinaryArithmeticFLOAToperation at line 35. Possible FailurePath: [L29] float IN = __VERIFIER_nondet_float(); [L30] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L24] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L30] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L32] float x = IN; [L34-L35] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=53, x=53] [L37] COND TRUE !(result >= 0.0f && result < 1.39843f) VAL [IN=53, x=53] [L38] reach_error() VAL [IN=53, x=53] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 10 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, 10 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=11occurred 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 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 [2022-11-20 12:01:59,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/bin/uautomizer-ug76WZFUDN --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 c5accd8423b70ca59158b13da79e2b7f06e66e009ebcbae27877bbff47ee55bb --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:02:01,665 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:02:01,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:02:01,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:02:01,707 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:02:01,711 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:02:01,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:02:01,717 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:02:01,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:02:01,724 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:02:01,726 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:02:01,728 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:02:01,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:02:01,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:02:01,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:02:01,739 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:02:01,740 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:02:01,741 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:02:01,742 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:02:01,744 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:02:01,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:02:01,749 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:02:01,750 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:02:01,750 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:02:01,764 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:02:01,764 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:02:01,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:02:01,766 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:02:01,767 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:02:01,768 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:02:01,768 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:02:01,771 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:02:01,773 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:02:01,786 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:02:01,787 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:02:01,788 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:02:01,788 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:02:01,789 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:02:01,789 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:02:01,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:02:01,791 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:02:01,796 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-20 12:02:01,837 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:02:01,837 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:02:01,839 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:02:01,839 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:02:01,840 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:02:01,840 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:02:01,841 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:02:01,841 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:02:01,842 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:02:01,842 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:02:01,843 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:02:01,843 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:02:01,844 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:02:01,844 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:02:01,844 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:02:01,844 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:02:01,845 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 12:02:01,845 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 12:02:01,845 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 12:02:01,845 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:02:01,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:02:01,846 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:02:01,846 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:02:01,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:02:01,846 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:02:01,847 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:02:01,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:02:01,847 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:02:01,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:02:01,848 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:02:01,848 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 12:02:01,848 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 12:02:01,849 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:02:01,849 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:02:01,849 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:02:01,849 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 12:02:01,850 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_f67e3062-d4c4-4966-999d-02001f2260e9/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5accd8423b70ca59158b13da79e2b7f06e66e009ebcbae27877bbff47ee55bb [2022-11-20 12:02:02,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:02:02,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:02:02,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:02:02,279 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:02:02,279 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:02:02,281 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/floats-cdfpl/square_3.i [2022-11-20 12:02:05,242 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:02:05,531 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:02:05,532 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/sv-benchmarks/c/floats-cdfpl/square_3.i [2022-11-20 12:02:05,540 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/bin/uautomizer-ug76WZFUDN/data/80bb83bee/37b407b0e8eb45a396c884741450c81c/FLAGad8befa52 [2022-11-20 12:02:05,570 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/bin/uautomizer-ug76WZFUDN/data/80bb83bee/37b407b0e8eb45a396c884741450c81c [2022-11-20 12:02:05,578 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:02:05,579 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:02:05,583 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:02:05,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:02:05,588 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:02:05,589 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:02:05" (1/1) ... [2022-11-20 12:02:05,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7424108f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:02:05, skipping insertion in model container [2022-11-20 12:02:05,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:02:05" (1/1) ... [2022-11-20 12:02:05,600 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:02:05,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:02:05,784 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/sv-benchmarks/c/floats-cdfpl/square_3.i[1629,1642] [2022-11-20 12:02:05,789 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:02:05,805 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:02:05,820 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/sv-benchmarks/c/floats-cdfpl/square_3.i[1629,1642] [2022-11-20 12:02:05,820 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:02:05,835 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:02:05,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:02:05 WrapperNode [2022-11-20 12:02:05,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:02:05,836 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:02:05,837 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:02:05,837 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:02:05,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:02:05" (1/1) ... [2022-11-20 12:02:05,853 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:02:05" (1/1) ... [2022-11-20 12:02:05,870 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 22 [2022-11-20 12:02:05,871 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:02:05,871 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:02:05,872 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:02:05,872 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:02:05,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:02:05" (1/1) ... [2022-11-20 12:02:05,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:02:05" (1/1) ... [2022-11-20 12:02:05,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:02:05" (1/1) ... [2022-11-20 12:02:05,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:02:05" (1/1) ... [2022-11-20 12:02:05,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:02:05" (1/1) ... [2022-11-20 12:02:05,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:02:05" (1/1) ... [2022-11-20 12:02:05,892 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:02:05" (1/1) ... [2022-11-20 12:02:05,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:02:05" (1/1) ... [2022-11-20 12:02:05,895 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:02:05,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:02:05,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:02:05,896 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:02:05,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:02:05" (1/1) ... [2022-11-20 12:02:05,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:02:05,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:02:05,927 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:02:05,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:02:05,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:02:05,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 12:02:05,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:02:05,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:02:06,064 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:02:06,066 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:02:08,357 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:02:08,364 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:02:08,364 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 12:02:08,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:02:08 BoogieIcfgContainer [2022-11-20 12:02:08,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:02:08,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:02:08,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:02:08,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:02:08,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:02:05" (1/3) ... [2022-11-20 12:02:08,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2da44a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:02:08, skipping insertion in model container [2022-11-20 12:02:08,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:02:05" (2/3) ... [2022-11-20 12:02:08,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2da44a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:02:08, skipping insertion in model container [2022-11-20 12:02:08,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:02:08" (3/3) ... [2022-11-20 12:02:08,376 INFO L112 eAbstractionObserver]: Analyzing ICFG square_3.i [2022-11-20 12:02:08,395 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:02:08,396 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:02:08,445 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:02:08,452 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@558fceb1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:02:08,453 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 12:02:08,457 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:02:08,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 12:02:08,463 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:02:08,464 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 12:02:08,465 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:02:08,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:02:08,470 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2022-11-20 12:02:08,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:02:08,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [907275086] [2022-11-20 12:02:08,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:02:08,485 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:02:08,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:02:08,493 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:02:08,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-20 12:02:09,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:09,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 12:02:09,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:02:09,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:02:09,135 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:02:09,135 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:02:09,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [907275086] [2022-11-20 12:02:09,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [907275086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:02:09,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:02:09,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:02:09,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228738055] [2022-11-20 12:02:09,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:02:09,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 12:02:09,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:02:09,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 12:02:09,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 12:02:09,181 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2022-11-20 12:02:09,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:02:09,196 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-11-20 12:02:09,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 12:02:09,198 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 6 [2022-11-20 12:02:09,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:02:09,207 INFO L225 Difference]: With dead ends: 19 [2022-11-20 12:02:09,207 INFO L226 Difference]: Without dead ends: 7 [2022-11-20 12:02:09,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 12:02:09,214 INFO L413 NwaCegarLoop]: 10 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, 10 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:02:09,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:02:09,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2022-11-20 12:02:09,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2022-11-20 12:02:09,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 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) [2022-11-20 12:02:09,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2022-11-20 12:02:09,249 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2022-11-20 12:02:09,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:02:09,250 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2022-11-20 12:02:09,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2022-11-20 12:02:09,250 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2022-11-20 12:02:09,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 12:02:09,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:02:09,251 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 12:02:09,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:02:09,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:02:09,473 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:02:09,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:02:09,474 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2022-11-20 12:02:09,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:02:09,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1622172204] [2022-11-20 12:02:09,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:02:09,475 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:02:09,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:02:09,510 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:02:09,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-20 12:02:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:02:35,232 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:03:22,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:03:22,582 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-20 12:03:22,582 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 12:03:22,584 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 12:03:22,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:03:22,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:03:22,790 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-20 12:03:22,794 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 12:03:22,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 12:03:22 BoogieIcfgContainer [2022-11-20 12:03:22,815 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 12:03:22,816 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 12:03:22,816 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 12:03:22,816 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 12:03:22,817 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:02:08" (3/4) ... [2022-11-20 12:03:22,819 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-20 12:03:22,879 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 12:03:22,885 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 12:03:22,886 INFO L158 Benchmark]: Toolchain (without parser) took 77306.64ms. Allocated memory was 67.1MB in the beginning and 90.2MB in the end (delta: 23.1MB). Free memory was 46.4MB in the beginning and 43.2MB in the end (delta: 3.2MB). Peak memory consumption was 27.2MB. Max. memory is 16.1GB. [2022-11-20 12:03:22,891 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 67.1MB. Free memory is still 45.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:03:22,892 INFO L158 Benchmark]: CACSL2BoogieTranslator took 252.59ms. Allocated memory is still 67.1MB. Free memory was 46.2MB in the beginning and 35.5MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 12:03:22,892 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.42ms. Allocated memory is still 67.1MB. Free memory was 35.5MB in the beginning and 33.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:03:22,893 INFO L158 Benchmark]: Boogie Preprocessor took 23.48ms. Allocated memory is still 67.1MB. Free memory was 33.9MB in the beginning and 32.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:03:22,895 INFO L158 Benchmark]: RCFGBuilder took 2470.77ms. Allocated memory was 67.1MB in the beginning and 90.2MB in the end (delta: 23.1MB). Free memory was 32.7MB in the beginning and 67.4MB in the end (delta: -34.7MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. [2022-11-20 12:03:22,896 INFO L158 Benchmark]: TraceAbstraction took 74446.52ms. Allocated memory is still 90.2MB. Free memory was 66.7MB in the beginning and 44.9MB in the end (delta: 21.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-20 12:03:22,897 INFO L158 Benchmark]: Witness Printer took 69.56ms. Allocated memory is still 90.2MB. Free memory was 44.5MB in the beginning and 43.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:03:22,900 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 67.1MB. Free memory is still 45.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 252.59ms. Allocated memory is still 67.1MB. Free memory was 46.2MB in the beginning and 35.5MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.42ms. Allocated memory is still 67.1MB. Free memory was 35.5MB in the beginning and 33.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.48ms. Allocated memory is still 67.1MB. Free memory was 33.9MB in the beginning and 32.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2470.77ms. Allocated memory was 67.1MB in the beginning and 90.2MB in the end (delta: 23.1MB). Free memory was 32.7MB in the beginning and 67.4MB in the end (delta: -34.7MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. * TraceAbstraction took 74446.52ms. Allocated memory is still 90.2MB. Free memory was 66.7MB in the beginning and 44.9MB in the end (delta: 21.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 69.56ms. Allocated memory is still 90.2MB. Free memory was 44.5MB in the beginning and 43.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. 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 - CounterExampleResult [Line: 38]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L29] float IN = __VERIFIER_nondet_float(); [L30] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L24] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L30] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L32] float x = IN; [L34-L35] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=0.9999999403953552, result=1.3984375, x=0.9999999403953552] [L37] COND TRUE !(result >= 0.0f && result < 1.39843f) VAL [IN=0.9999999403953552, result=1.3984375, x=0.9999999403953552] [L38] reach_error() VAL [IN=0.9999999403953552, result=1.3984375, x=0.9999999403953552] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 74.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 10 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, 10 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 26.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 20 ConjunctsInSsa, 1 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 proved your program to be incorrect! [2022-11-20 12:03:22,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67e3062-d4c4-4966-999d-02001f2260e9/bin/uautomizer-ug76WZFUDN/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE