./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_1_7.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX --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 280b8fb8b8971dddeac309f519e287e5861d70c745bb226258306dd2e2fb70ff --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 10:36:56,199 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 10:36:56,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 10:36:56,237 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 10:36:56,238 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 10:36:56,239 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 10:36:56,241 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 10:36:56,244 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 10:36:56,246 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 10:36:56,247 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 10:36:56,248 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 10:36:56,250 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 10:36:56,251 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 10:36:56,252 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 10:36:56,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 10:36:56,256 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 10:36:56,257 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 10:36:56,258 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 10:36:56,261 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 10:36:56,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 10:36:56,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 10:36:56,268 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 10:36:56,270 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 10:36:56,271 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 10:36:56,275 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 10:36:56,275 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 10:36:56,276 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 10:36:56,277 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 10:36:56,278 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 10:36:56,279 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 10:36:56,279 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 10:36:56,280 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 10:36:56,281 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 10:36:56,282 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 10:36:56,284 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 10:36:56,284 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 10:36:56,285 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 10:36:56,285 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 10:36:56,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 10:36:56,287 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 10:36:56,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 10:36:56,289 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 10:36:56,336 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 10:36:56,336 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 10:36:56,337 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 10:36:56,337 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 10:36:56,339 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 10:36:56,339 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 10:36:56,339 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 10:36:56,340 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 10:36:56,340 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 10:36:56,340 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 10:36:56,341 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 10:36:56,341 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 10:36:56,342 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 10:36:56,342 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 10:36:56,342 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 10:36:56,343 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 10:36:56,343 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 10:36:56,351 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 10:36:56,352 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 10:36:56,352 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 10:36:56,352 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 10:36:56,352 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 10:36:56,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:36:56,353 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 10:36:56,354 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 10:36:56,354 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 10:36:56,354 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 10:36:56,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 10:36:56,355 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 10:36:56,355 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 10:36:56,355 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 10:36:56,356 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 10:36:56,356 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_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 280b8fb8b8971dddeac309f519e287e5861d70c745bb226258306dd2e2fb70ff [2021-11-09 10:36:56,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 10:36:56,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 10:36:56,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 10:36:56,687 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 10:36:56,688 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 10:36:56,689 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/floats-cdfpl/newton_1_7.i [2021-11-09 10:36:56,774 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX/data/57694a100/ba9b0e7f197542519ed71467d2b47ad9/FLAG1281ad1fd [2021-11-09 10:36:57,229 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 10:36:57,230 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/sv-benchmarks/c/floats-cdfpl/newton_1_7.i [2021-11-09 10:36:57,243 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX/data/57694a100/ba9b0e7f197542519ed71467d2b47ad9/FLAG1281ad1fd [2021-11-09 10:36:57,630 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX/data/57694a100/ba9b0e7f197542519ed71467d2b47ad9 [2021-11-09 10:36:57,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 10:36:57,634 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 10:36:57,645 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 10:36:57,645 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 10:36:57,649 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 10:36:57,650 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:36:57" (1/1) ... [2021-11-09 10:36:57,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43e487fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:36:57, skipping insertion in model container [2021-11-09 10:36:57,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:36:57" (1/1) ... [2021-11-09 10:36:57,660 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 10:36:57,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:36:57,861 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/sv-benchmarks/c/floats-cdfpl/newton_1_7.i[1224,1237] [2021-11-09 10:36:57,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:36:57,875 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 10:36:57,895 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/sv-benchmarks/c/floats-cdfpl/newton_1_7.i[1224,1237] [2021-11-09 10:36:57,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:36:57,911 INFO L208 MainTranslator]: Completed translation [2021-11-09 10:36:57,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:36:57 WrapperNode [2021-11-09 10:36:57,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 10:36:57,913 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 10:36:57,913 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 10:36:57,913 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 10:36:57,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:36:57" (1/1) ... [2021-11-09 10:36:57,928 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:36:57" (1/1) ... [2021-11-09 10:36:57,946 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 10:36:57,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 10:36:57,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 10:36:57,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 10:36:57,956 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:36:57" (1/1) ... [2021-11-09 10:36:57,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:36:57" (1/1) ... [2021-11-09 10:36:57,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:36:57" (1/1) ... [2021-11-09 10:36:57,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:36:57" (1/1) ... [2021-11-09 10:36:57,964 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:36:57" (1/1) ... [2021-11-09 10:36:57,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:36:57" (1/1) ... [2021-11-09 10:36:57,967 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:36:57" (1/1) ... [2021-11-09 10:36:57,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 10:36:57,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 10:36:57,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 10:36:57,970 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 10:36:57,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:36:57" (1/1) ... [2021-11-09 10:36:57,991 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:36:58,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:36:58,034 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 10:36:58,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 10:36:58,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 10:36:58,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 10:36:58,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 10:36:58,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 10:36:58,319 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 10:36:58,320 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-11-09 10:36:58,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:36:58 BoogieIcfgContainer [2021-11-09 10:36:58,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 10:36:58,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 10:36:58,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 10:36:58,330 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 10:36:58,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:36:57" (1/3) ... [2021-11-09 10:36:58,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d987fe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:36:58, skipping insertion in model container [2021-11-09 10:36:58,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:36:57" (2/3) ... [2021-11-09 10:36:58,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d987fe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:36:58, skipping insertion in model container [2021-11-09 10:36:58,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:36:58" (3/3) ... [2021-11-09 10:36:58,335 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_7.i [2021-11-09 10:36:58,342 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 10:36:58,342 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 10:36:58,399 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 10:36:58,405 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 10:36:58,405 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-09 10:36:58,419 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:36:58,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-09 10:36:58,424 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:36:58,425 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:36:58,425 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:36:58,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:36:58,431 INFO L85 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2021-11-09 10:36:58,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:36:58,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561259604] [2021-11-09 10:36:58,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:36:58,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:36:58,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:36:58,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:36:58,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:36:58,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561259604] [2021-11-09 10:36:58,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561259604] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:36:58,587 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:36:58,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 10:36:58,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147586647] [2021-11-09 10:36:58,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 10:36:58,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:36:58,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 10:36:58,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 10:36:58,612 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:36:58,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:36:58,627 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-11-09 10:36:58,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 10:36:58,628 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-11-09 10:36:58,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:36:58,637 INFO L225 Difference]: With dead ends: 23 [2021-11-09 10:36:58,637 INFO L226 Difference]: Without dead ends: 9 [2021-11-09 10:36:58,640 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 10:36:58,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-09 10:36:58,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-09 10:36:58,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:36:58,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-11-09 10:36:58,672 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-11-09 10:36:58,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:36:58,672 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-11-09 10:36:58,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:36:58,673 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-11-09 10:36:58,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-09 10:36:58,674 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:36:58,674 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:36:58,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 10:36:58,675 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:36:58,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:36:58,676 INFO L85 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2021-11-09 10:36:58,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:36:58,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803723709] [2021-11-09 10:36:58,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:36:58,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:36:58,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 10:36:58,698 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 10:36:58,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 10:36:58,759 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 10:36:58,760 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-09 10:36:58,762 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 10:36:58,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 10:36:58,767 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-09 10:36:58,771 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 10:36:58,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 10:36:58 BoogieIcfgContainer [2021-11-09 10:36:58,803 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 10:36:58,804 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 10:36:58,805 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 10:36:58,805 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 10:36:58,805 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:36:58" (3/4) ... [2021-11-09 10:36:58,810 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-09 10:36:58,810 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 10:36:58,812 INFO L168 Benchmark]: Toolchain (without parser) took 1176.72 ms. Allocated memory is still 107.0 MB. Free memory was 67.5 MB in the beginning and 47.7 MB in the end (delta: 19.8 MB). Peak memory consumption was 18.7 MB. Max. memory is 16.1 GB. [2021-11-09 10:36:58,813 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 107.0 MB. Free memory is still 84.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:36:58,815 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.05 ms. Allocated memory is still 107.0 MB. Free memory was 67.3 MB in the beginning and 81.1 MB in the end (delta: -13.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-09 10:36:58,818 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.62 ms. Allocated memory is still 107.0 MB. Free memory was 81.1 MB in the beginning and 79.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:36:58,819 INFO L168 Benchmark]: Boogie Preprocessor took 21.88 ms. Allocated memory is still 107.0 MB. Free memory was 79.8 MB in the beginning and 78.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 10:36:58,825 INFO L168 Benchmark]: RCFGBuilder took 352.37 ms. Allocated memory is still 107.0 MB. Free memory was 78.7 MB in the beginning and 69.8 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 10:36:58,826 INFO L168 Benchmark]: TraceAbstraction took 479.56 ms. Allocated memory is still 107.0 MB. Free memory was 69.3 MB in the beginning and 47.7 MB in the end (delta: 21.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-11-09 10:36:58,826 INFO L168 Benchmark]: Witness Printer took 5.69 ms. Allocated memory is still 107.0 MB. Free memory is still 47.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:36:58,835 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 107.0 MB. Free memory is still 84.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 267.05 ms. Allocated memory is still 107.0 MB. Free memory was 67.3 MB in the beginning and 81.1 MB in the end (delta: -13.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.62 ms. Allocated memory is still 107.0 MB. Free memory was 81.1 MB in the beginning and 79.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.88 ms. Allocated memory is still 107.0 MB. Free memory was 79.8 MB in the beginning and 78.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 352.37 ms. Allocated memory is still 107.0 MB. Free memory was 78.7 MB in the beginning and 69.8 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 479.56 ms. Allocated memory is still 107.0 MB. Free memory was 69.3 MB in the beginning and 47.7 MB in the end (delta: 21.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Witness Printer took 5.69 ms. Allocated memory is still 107.0 MB. Free memory is still 47.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * 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: 42]: 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 31, overapproximation of someBinaryDOUBLEComparisonOperation at line 41, overapproximation of someBinaryArithmeticFLOAToperation at line 33. Possible FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, 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=13occurred 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, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-09 10:36:58,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX --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 280b8fb8b8971dddeac309f519e287e5861d70c745bb226258306dd2e2fb70ff --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 10:37:01,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 10:37:01,443 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 10:37:01,503 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 10:37:01,503 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 10:37:01,508 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 10:37:01,510 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 10:37:01,517 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 10:37:01,521 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 10:37:01,527 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 10:37:01,528 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 10:37:01,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 10:37:01,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 10:37:01,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 10:37:01,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 10:37:01,541 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 10:37:01,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 10:37:01,545 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 10:37:01,547 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 10:37:01,556 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 10:37:01,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 10:37:01,560 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 10:37:01,563 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 10:37:01,565 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 10:37:01,575 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 10:37:01,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 10:37:01,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 10:37:01,579 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 10:37:01,579 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 10:37:01,581 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 10:37:01,581 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 10:37:01,582 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 10:37:01,585 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 10:37:01,586 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 10:37:01,599 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 10:37:01,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 10:37:01,600 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 10:37:01,600 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 10:37:01,601 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 10:37:01,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 10:37:01,604 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 10:37:01,604 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-09 10:37:01,649 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 10:37:01,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 10:37:01,650 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 10:37:01,650 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 10:37:01,652 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 10:37:01,653 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 10:37:01,653 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 10:37:01,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 10:37:01,654 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 10:37:01,655 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 10:37:01,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 10:37:01,656 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 10:37:01,656 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 10:37:01,656 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 10:37:01,657 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-09 10:37:01,657 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-09 10:37:01,657 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 10:37:01,658 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 10:37:01,658 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 10:37:01,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 10:37:01,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 10:37:01,659 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 10:37:01,659 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 10:37:01,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:37:01,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 10:37:01,660 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 10:37:01,660 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 10:37:01,660 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-09 10:37:01,661 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-09 10:37:01,661 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 10:37:01,661 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 10:37:01,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 10:37:01,662 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 10:37:01,662 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-09 10:37:01,662 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_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 280b8fb8b8971dddeac309f519e287e5861d70c745bb226258306dd2e2fb70ff [2021-11-09 10:37:02,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 10:37:02,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 10:37:02,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 10:37:02,155 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 10:37:02,156 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 10:37:02,157 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/floats-cdfpl/newton_1_7.i [2021-11-09 10:37:02,233 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX/data/8428aeba4/81bc4646d63848e7b711068cad165786/FLAGc638c6a82 [2021-11-09 10:37:02,745 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 10:37:02,746 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/sv-benchmarks/c/floats-cdfpl/newton_1_7.i [2021-11-09 10:37:02,752 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX/data/8428aeba4/81bc4646d63848e7b711068cad165786/FLAGc638c6a82 [2021-11-09 10:37:03,147 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX/data/8428aeba4/81bc4646d63848e7b711068cad165786 [2021-11-09 10:37:03,156 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 10:37:03,158 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 10:37:03,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 10:37:03,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 10:37:03,167 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 10:37:03,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:37:03" (1/1) ... [2021-11-09 10:37:03,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@175fe3e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:37:03, skipping insertion in model container [2021-11-09 10:37:03,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:37:03" (1/1) ... [2021-11-09 10:37:03,178 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 10:37:03,197 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:37:03,415 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/sv-benchmarks/c/floats-cdfpl/newton_1_7.i[1224,1237] [2021-11-09 10:37:03,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:37:03,431 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 10:37:03,478 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/sv-benchmarks/c/floats-cdfpl/newton_1_7.i[1224,1237] [2021-11-09 10:37:03,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:37:03,496 INFO L208 MainTranslator]: Completed translation [2021-11-09 10:37:03,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:37:03 WrapperNode [2021-11-09 10:37:03,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 10:37:03,498 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 10:37:03,498 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 10:37:03,498 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 10:37:03,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:37:03" (1/1) ... [2021-11-09 10:37:03,516 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:37:03" (1/1) ... [2021-11-09 10:37:03,536 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 10:37:03,537 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 10:37:03,537 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 10:37:03,537 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 10:37:03,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:37:03" (1/1) ... [2021-11-09 10:37:03,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:37:03" (1/1) ... [2021-11-09 10:37:03,549 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:37:03" (1/1) ... [2021-11-09 10:37:03,549 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:37:03" (1/1) ... [2021-11-09 10:37:03,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:37:03" (1/1) ... [2021-11-09 10:37:03,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:37:03" (1/1) ... [2021-11-09 10:37:03,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:37:03" (1/1) ... [2021-11-09 10:37:03,564 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 10:37:03,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 10:37:03,565 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 10:37:03,565 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 10:37:03,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:37:03" (1/1) ... [2021-11-09 10:37:03,573 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:37:03,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:37:03,601 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 10:37:03,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 10:37:03,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-09 10:37:03,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 10:37:03,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 10:37:03,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 10:37:10,721 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 10:37:10,721 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-11-09 10:37:10,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:37:10 BoogieIcfgContainer [2021-11-09 10:37:10,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 10:37:10,734 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 10:37:10,747 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 10:37:10,751 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 10:37:10,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:37:03" (1/3) ... [2021-11-09 10:37:10,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19c61b11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:37:10, skipping insertion in model container [2021-11-09 10:37:10,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:37:03" (2/3) ... [2021-11-09 10:37:10,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19c61b11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:37:10, skipping insertion in model container [2021-11-09 10:37:10,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:37:10" (3/3) ... [2021-11-09 10:37:10,755 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_7.i [2021-11-09 10:37:10,761 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 10:37:10,775 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 10:37:10,838 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 10:37:10,846 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 10:37:10,847 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-09 10:37:10,861 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:37:10,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-09 10:37:10,867 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:37:10,868 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:37:10,868 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:37:10,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:37:10,875 INFO L85 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2021-11-09 10:37:10,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:37:10,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [52151585] [2021-11-09 10:37:10,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:37:10,890 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:37:10,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:37:10,906 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:37:10,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-09 10:37:12,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:37:12,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-09 10:37:12,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:37:12,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:37:12,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:37:12,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:37:12,435 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:37:12,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [52151585] [2021-11-09 10:37:12,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [52151585] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:37:12,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:37:12,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 10:37:12,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169947033] [2021-11-09 10:37:12,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 10:37:12,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:37:12,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 10:37:12,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 10:37:12,461 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:37:12,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:37:12,476 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-11-09 10:37:12,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 10:37:12,477 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-11-09 10:37:12,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:37:12,485 INFO L225 Difference]: With dead ends: 23 [2021-11-09 10:37:12,485 INFO L226 Difference]: Without dead ends: 9 [2021-11-09 10:37:12,488 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 10:37:12,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-09 10:37:12,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-09 10:37:12,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:37:12,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-11-09 10:37:12,517 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-11-09 10:37:12,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:37:12,518 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-11-09 10:37:12,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:37:12,518 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-11-09 10:37:12,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-09 10:37:12,519 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:37:12,519 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:37:12,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-09 10:37:12,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:37:12,744 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:37:12,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:37:12,745 INFO L85 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2021-11-09 10:37:12,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:37:12,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [728378821] [2021-11-09 10:37:12,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:37:12,747 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:37:12,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:37:12,748 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:37:12,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-09 10:37:21,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 10:37:21,230 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 10:38:21,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 10:38:21,314 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-09 10:38:21,315 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-09 10:38:21,317 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 10:38:21,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-09 10:38:21,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:38:21,524 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-09 10:38:21,527 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 10:38:21,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 10:38:21 BoogieIcfgContainer [2021-11-09 10:38:21,565 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 10:38:21,567 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 10:38:21,568 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 10:38:21,568 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 10:38:21,568 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:37:10" (3/4) ... [2021-11-09 10:38:21,571 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-09 10:38:21,649 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX/witness.graphml [2021-11-09 10:38:21,651 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 10:38:21,657 INFO L168 Benchmark]: Toolchain (without parser) took 78494.58 ms. Allocated memory is still 60.8 MB. Free memory was 37.9 MB in the beginning and 36.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2021-11-09 10:38:21,663 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 60.8 MB. Free memory was 40.5 MB in the beginning and 40.5 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:38:21,664 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.26 ms. Allocated memory is still 60.8 MB. Free memory was 37.7 MB in the beginning and 42.7 MB in the end (delta: -4.9 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2021-11-09 10:38:21,666 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.86 ms. Allocated memory is still 60.8 MB. Free memory was 42.5 MB in the beginning and 40.9 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:38:21,667 INFO L168 Benchmark]: Boogie Preprocessor took 27.53 ms. Allocated memory is still 60.8 MB. Free memory was 40.9 MB in the beginning and 39.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-09 10:38:21,668 INFO L168 Benchmark]: RCFGBuilder took 7167.58 ms. Allocated memory is still 60.8 MB. Free memory was 39.6 MB in the beginning and 30.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 10:38:21,669 INFO L168 Benchmark]: TraceAbstraction took 70830.46 ms. Allocated memory is still 60.8 MB. Free memory was 30.0 MB in the beginning and 38.0 MB in the end (delta: -8.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:38:21,669 INFO L168 Benchmark]: Witness Printer took 84.10 ms. Allocated memory is still 60.8 MB. Free memory was 37.7 MB in the beginning and 36.1 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:38:21,677 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 60.8 MB. Free memory was 40.5 MB in the beginning and 40.5 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 334.26 ms. Allocated memory is still 60.8 MB. Free memory was 37.7 MB in the beginning and 42.7 MB in the end (delta: -4.9 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.86 ms. Allocated memory is still 60.8 MB. Free memory was 42.5 MB in the beginning and 40.9 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.53 ms. Allocated memory is still 60.8 MB. Free memory was 40.9 MB in the beginning and 39.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 7167.58 ms. Allocated memory is still 60.8 MB. Free memory was 39.6 MB in the beginning and 30.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 70830.46 ms. Allocated memory is still 60.8 MB. Free memory was 30.0 MB in the beginning and 38.0 MB in the end (delta: -8.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 84.10 ms. Allocated memory is still 60.8 MB. Free memory was 37.7 MB in the beginning and 36.1 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * 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: 42]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 70.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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, 9.6s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 14 SizeOfPredicates, 0 NumberOfNonLiveVariables, 32 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-09 10:38:21,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21e5786-f91d-4b3f-8307-f26ab9517a92/bin/uautomizer-IVEQpCNsaX/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