./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9c301aadcf824cc95473e8bc31e84ff4ca7e703d59978c831f904d5646201155 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:21:49,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:21:49,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:21:50,037 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:21:50,038 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:21:50,040 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:21:50,042 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:21:50,046 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:21:50,049 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:21:50,051 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:21:50,053 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:21:50,055 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:21:50,056 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:21:50,058 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:21:50,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:21:50,063 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:21:50,070 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:21:50,072 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:21:50,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:21:50,083 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:21:50,091 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:21:50,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:21:50,097 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:21:50,100 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:21:50,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:21:50,113 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:21:50,113 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:21:50,116 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:21:50,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:21:50,120 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:21:50,121 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:21:50,122 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:21:50,125 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:21:50,127 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:21:50,129 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:21:50,130 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:21:50,131 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:21:50,131 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:21:50,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:21:50,133 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:21:50,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:21:50,136 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:21:50,209 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:21:50,209 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:21:50,211 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:21:50,212 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:21:50,212 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:21:50,213 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:21:50,213 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:21:50,213 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:21:50,221 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:21:50,222 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:21:50,223 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:21:50,224 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:21:50,224 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:21:50,224 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:21:50,225 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:21:50,226 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:21:50,226 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:21:50,226 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:21:50,227 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:21:50,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:21:50,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:21:50,228 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:21:50,228 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:21:50,228 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:21:50,228 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:21:50,229 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:21:50,229 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:21:50,229 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:21:50,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:21:50,232 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:21:50,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:21:50,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:21:50,233 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:21:50,233 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:21:50,234 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:21:50,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:21:50,234 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:21:50,235 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:21:50,235 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:21:50,235 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c301aadcf824cc95473e8bc31e84ff4ca7e703d59978c831f904d5646201155 [2021-11-03 04:21:50,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:21:50,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:21:50,701 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:21:50,702 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:21:50,703 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:21:50,704 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2021-11-03 04:21:50,807 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/data/f51037d8b/c4c62e09445d45beb40597c58bebcd15/FLAGcd887561f [2021-11-03 04:21:51,420 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:21:51,421 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2021-11-03 04:21:51,436 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/data/f51037d8b/c4c62e09445d45beb40597c58bebcd15/FLAGcd887561f [2021-11-03 04:21:51,781 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/data/f51037d8b/c4c62e09445d45beb40597c58bebcd15 [2021-11-03 04:21:51,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:21:51,786 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:21:51,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:21:51,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:21:51,796 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:21:51,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:21:51" (1/1) ... [2021-11-03 04:21:51,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60f9ade3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:51, skipping insertion in model container [2021-11-03 04:21:51,799 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:21:51" (1/1) ... [2021-11-03 04:21:51,808 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:21:51,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:21:52,062 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_7358252b-5770-461d-8659-cecf2a987dc3/sv-benchmarks/c/float-newlib/float_req_bl_1091.c[1603,1616] [2021-11-03 04:21:52,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:21:52,077 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:21:52,107 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_7358252b-5770-461d-8659-cecf2a987dc3/sv-benchmarks/c/float-newlib/float_req_bl_1091.c[1603,1616] [2021-11-03 04:21:52,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:21:52,125 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:21:52,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:52 WrapperNode [2021-11-03 04:21:52,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:21:52,128 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:21:52,128 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:21:52,128 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:21:52,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:52" (1/1) ... [2021-11-03 04:21:52,147 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:52" (1/1) ... [2021-11-03 04:21:52,174 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:21:52,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:21:52,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:21:52,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:21:52,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:52" (1/1) ... [2021-11-03 04:21:52,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:52" (1/1) ... [2021-11-03 04:21:52,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:52" (1/1) ... [2021-11-03 04:21:52,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:52" (1/1) ... [2021-11-03 04:21:52,201 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:52" (1/1) ... [2021-11-03 04:21:52,210 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:52" (1/1) ... [2021-11-03 04:21:52,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:52" (1/1) ... [2021-11-03 04:21:52,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:21:52,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:21:52,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:21:52,219 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:21:52,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:52" (1/1) ... [2021-11-03 04:21:52,229 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:21:52,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:21:52,259 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:21:52,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:21:52,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 04:21:52,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:21:52,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-03 04:21:52,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 04:21:52,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-03 04:21:52,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:21:52,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:21:52,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 04:21:52,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:21:52,878 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:21:52,878 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-11-03 04:21:52,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:21:52 BoogieIcfgContainer [2021-11-03 04:21:52,882 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:21:52,884 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:21:52,884 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:21:52,890 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:21:52,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:21:51" (1/3) ... [2021-11-03 04:21:52,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26d95689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:21:52, skipping insertion in model container [2021-11-03 04:21:52,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:52" (2/3) ... [2021-11-03 04:21:52,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26d95689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:21:52, skipping insertion in model container [2021-11-03 04:21:52,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:21:52" (3/3) ... [2021-11-03 04:21:52,895 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1091.c [2021-11-03 04:21:52,903 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:21:52,903 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 04:21:52,954 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:21:52,962 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 04:21:52,962 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 04:21:52,977 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 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) [2021-11-03 04:21:52,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-03 04:21:52,983 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:21:52,983 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:21:52,984 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:21:52,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:21:52,990 INFO L85 PathProgramCache]: Analyzing trace with hash -341997226, now seen corresponding path program 1 times [2021-11-03 04:21:53,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:21:53,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804136274] [2021-11-03 04:21:53,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:53,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:21:53,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:53,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:21:53,169 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:21:53,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804136274] [2021-11-03 04:21:53,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804136274] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:21:53,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:21:53,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:21:53,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034054650] [2021-11-03 04:21:53,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:21:53,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:21:53,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:21:53,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:21:53,197 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 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 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:53,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:21:53,212 INFO L93 Difference]: Finished difference Result 31 states and 45 transitions. [2021-11-03 04:21:53,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:21:53,215 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-03 04:21:53,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:21:53,224 INFO L225 Difference]: With dead ends: 31 [2021-11-03 04:21:53,225 INFO L226 Difference]: Without dead ends: 14 [2021-11-03 04:21:53,228 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 [2021-11-03 04:21:53,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-03 04:21:53,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-03 04:21:53,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 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) [2021-11-03 04:21:53,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-11-03 04:21:53,261 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 7 [2021-11-03 04:21:53,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:21:53,262 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-11-03 04:21:53,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:53,262 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-11-03 04:21:53,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 04:21:53,263 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:21:53,263 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:21:53,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 04:21:53,264 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:21:53,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:21:53,269 INFO L85 PathProgramCache]: Analyzing trace with hash 141319461, now seen corresponding path program 1 times [2021-11-03 04:21:53,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:21:53,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663192979] [2021-11-03 04:21:53,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:53,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:21:53,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 04:21:53,414 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-03 04:21:53,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 04:21:53,534 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-03 04:21:53,535 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-03 04:21:53,537 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:21:53,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 04:21:53,543 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-03 04:21:53,546 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 04:21:53,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:21:53 BoogieIcfgContainer [2021-11-03 04:21:53,571 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 04:21:53,572 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 04:21:53,572 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 04:21:53,572 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 04:21:53,573 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:21:52" (3/4) ... [2021-11-03 04:21:53,577 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-03 04:21:53,577 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 04:21:53,579 INFO L168 Benchmark]: Toolchain (without parser) took 1792.22 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 47.4 MB in the beginning and 59.2 MB in the end (delta: -11.9 MB). Peak memory consumption was 3.8 MB. Max. memory is 16.1 GB. [2021-11-03 04:21:53,580 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 83.9 MB. Free memory is still 64.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:21:53,581 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.86 ms. Allocated memory is still 83.9 MB. Free memory was 47.2 MB in the beginning and 60.5 MB in the end (delta: -13.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 04:21:53,582 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.13 ms. Allocated memory is still 83.9 MB. Free memory was 60.4 MB in the beginning and 58.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:21:53,583 INFO L168 Benchmark]: Boogie Preprocessor took 41.51 ms. Allocated memory is still 83.9 MB. Free memory was 58.7 MB in the beginning and 57.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:21:53,583 INFO L168 Benchmark]: RCFGBuilder took 664.00 ms. Allocated memory is still 83.9 MB. Free memory was 57.4 MB in the beginning and 41.8 MB in the end (delta: 15.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-03 04:21:53,584 INFO L168 Benchmark]: TraceAbstraction took 687.58 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 41.4 MB in the beginning and 59.8 MB in the end (delta: -18.4 MB). Peak memory consumption was 77.8 kB. Max. memory is 16.1 GB. [2021-11-03 04:21:53,585 INFO L168 Benchmark]: Witness Printer took 5.05 ms. Allocated memory is still 100.7 MB. Free memory was 59.8 MB in the beginning and 59.2 MB in the end (delta: 558.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:21:53,589 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 83.9 MB. Free memory is still 64.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 334.86 ms. Allocated memory is still 83.9 MB. Free memory was 47.2 MB in the beginning and 60.5 MB in the end (delta: -13.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.13 ms. Allocated memory is still 83.9 MB. Free memory was 60.4 MB in the beginning and 58.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.51 ms. Allocated memory is still 83.9 MB. Free memory was 58.7 MB in the beginning and 57.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 664.00 ms. Allocated memory is still 83.9 MB. Free memory was 57.4 MB in the beginning and 41.8 MB in the end (delta: 15.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 687.58 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 41.4 MB in the beginning and 59.8 MB in the end (delta: -18.4 MB). Peak memory consumption was 77.8 kB. Max. memory is 16.1 GB. * Witness Printer took 5.05 ms. Allocated memory is still 100.7 MB. Free memory was 59.8 MB in the beginning and 59.2 MB in the end (delta: 558.8 kB). 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: 74]: 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 59, overapproximation of someBinaryArithmeticFLOAToperation at line 46, overapproximation of bitwiseAnd at line 23. Possible FailurePath: [L13] static const float huge_ceil = 1.0e30; [L68] float x = 0.0f / 0.0f; [L16] __int32_t i0, j0; [L17] __uint32_t i, ix; VAL [huge_ceil=1000000000000000000000000000000] [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] ix = (i0 & 0x7fffffff) [L24] j0 = (ix >> 23) - 0x7f VAL [huge_ceil=1000000000000000000000000000000] [L25] COND FALSE !(j0 < 23) [L45] COND TRUE !((ix) < 0x7f800000L) [L46] return x + x; VAL [huge_ceil=1000000000000000000000000000000] [L70] float res = ceil_float(x); [L59] return x != x; [L73] COND TRUE !isnan_float(res) [L74] reach_error() VAL [huge_ceil=1000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, 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: 18 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=16occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-03 04:21:53,634 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9c301aadcf824cc95473e8bc31e84ff4ca7e703d59978c831f904d5646201155 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:21:56,669 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:21:56,674 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:21:56,751 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:21:56,752 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:21:56,757 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:21:56,761 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:21:56,766 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:21:56,771 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:21:56,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:21:56,782 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:21:56,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:21:56,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:21:56,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:21:56,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:21:56,794 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:21:56,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:21:56,799 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:21:56,819 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:21:56,827 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:21:56,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:21:56,833 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:21:56,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:21:56,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:21:56,854 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:21:56,856 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:21:56,857 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:21:56,858 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:21:56,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:21:56,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:21:56,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:21:56,864 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:21:56,866 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:21:56,868 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:21:56,870 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:21:56,870 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:21:56,872 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:21:56,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:21:56,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:21:56,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:21:56,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:21:56,883 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 04:21:56,942 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:21:56,942 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:21:56,944 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:21:56,944 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:21:56,945 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:21:56,945 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:21:56,945 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:21:56,946 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:21:56,946 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:21:56,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:21:56,949 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:21:56,950 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:21:56,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:21:56,950 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:21:56,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:21:56,951 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:21:56,951 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:21:56,951 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:21:56,952 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:21:56,952 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:21:56,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:21:56,953 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:21:56,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:21:56,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:21:56,954 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:21:56,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:21:56,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:21:56,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:21:56,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:21:56,955 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:21:56,956 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:21:56,956 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:21:56,956 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:21:56,957 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:21:56,957 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:21:56,958 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_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c301aadcf824cc95473e8bc31e84ff4ca7e703d59978c831f904d5646201155 [2021-11-03 04:21:57,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:21:57,496 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:21:57,499 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:21:57,501 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:21:57,502 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:21:57,503 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2021-11-03 04:21:57,599 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/data/47837f2d9/b0c7fdf5bb6148d982561d210041ef03/FLAG1b8d0098f [2021-11-03 04:21:58,263 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:21:58,264 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2021-11-03 04:21:58,275 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/data/47837f2d9/b0c7fdf5bb6148d982561d210041ef03/FLAG1b8d0098f [2021-11-03 04:21:58,603 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/data/47837f2d9/b0c7fdf5bb6148d982561d210041ef03 [2021-11-03 04:21:58,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:21:58,612 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:21:58,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:21:58,626 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:21:58,630 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:21:58,631 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:21:58" (1/1) ... [2021-11-03 04:21:58,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@713bb029 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:58, skipping insertion in model container [2021-11-03 04:21:58,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:21:58" (1/1) ... [2021-11-03 04:21:58,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:21:58,666 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:21:58,858 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_7358252b-5770-461d-8659-cecf2a987dc3/sv-benchmarks/c/float-newlib/float_req_bl_1091.c[1603,1616] [2021-11-03 04:21:58,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:21:58,880 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:21:58,938 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_7358252b-5770-461d-8659-cecf2a987dc3/sv-benchmarks/c/float-newlib/float_req_bl_1091.c[1603,1616] [2021-11-03 04:21:58,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:21:59,015 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:21:59,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:59 WrapperNode [2021-11-03 04:21:59,016 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:21:59,018 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:21:59,018 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:21:59,018 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:21:59,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:59" (1/1) ... [2021-11-03 04:21:59,064 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:59" (1/1) ... [2021-11-03 04:21:59,107 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:21:59,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:21:59,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:21:59,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:21:59,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:59" (1/1) ... [2021-11-03 04:21:59,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:59" (1/1) ... [2021-11-03 04:21:59,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:59" (1/1) ... [2021-11-03 04:21:59,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:59" (1/1) ... [2021-11-03 04:21:59,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:59" (1/1) ... [2021-11-03 04:21:59,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:59" (1/1) ... [2021-11-03 04:21:59,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:59" (1/1) ... [2021-11-03 04:21:59,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:21:59,187 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:21:59,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:21:59,187 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:21:59,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:59" (1/1) ... [2021-11-03 04:21:59,206 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:21:59,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:21:59,237 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:21:59,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:21:59,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:21:59,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:21:59,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-11-03 04:21:59,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 04:21:59,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:21:59,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:21:59,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-11-03 04:21:59,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 04:21:59,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:22:00,385 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:22:00,386 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-11-03 04:22:00,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:22:00 BoogieIcfgContainer [2021-11-03 04:22:00,389 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:22:00,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:22:00,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:22:00,396 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:22:00,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:21:58" (1/3) ... [2021-11-03 04:22:00,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@687efb8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:22:00, skipping insertion in model container [2021-11-03 04:22:00,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:59" (2/3) ... [2021-11-03 04:22:00,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@687efb8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:22:00, skipping insertion in model container [2021-11-03 04:22:00,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:22:00" (3/3) ... [2021-11-03 04:22:00,404 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1091.c [2021-11-03 04:22:00,419 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:22:00,419 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 04:22:00,481 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:22:00,490 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 04:22:00,490 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 04:22:00,508 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.625) internal successors, (39), 25 states have internal predecessors, (39), 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) [2021-11-03 04:22:00,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-03 04:22:00,515 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:22:00,516 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:22:00,517 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:22:00,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:22:00,524 INFO L85 PathProgramCache]: Analyzing trace with hash -2022266355, now seen corresponding path program 1 times [2021-11-03 04:22:00,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:22:00,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1688968412] [2021-11-03 04:22:00,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:22:00,541 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:22:00,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:22:00,546 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:22:00,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:22:00,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:22:00,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 04:22:00,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:22:00,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:22:00,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:22:00,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:22:00,880 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:22:00,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1688968412] [2021-11-03 04:22:00,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1688968412] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:22:00,882 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:22:00,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:22:00,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710806202] [2021-11-03 04:22:00,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:22:00,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:22:00,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:22:00,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:22:00,934 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.625) internal successors, (39), 25 states have internal predecessors, (39), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-11-03 04:22:00,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:22:00,960 INFO L93 Difference]: Finished difference Result 50 states and 76 transitions. [2021-11-03 04:22:00,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:22:00,961 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2021-11-03 04:22:00,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:22:00,973 INFO L225 Difference]: With dead ends: 50 [2021-11-03 04:22:00,973 INFO L226 Difference]: Without dead ends: 23 [2021-11-03 04:22:00,977 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:22:00,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-03 04:22:01,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-03 04:22:01,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 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) [2021-11-03 04:22:01,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2021-11-03 04:22:01,024 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 10 [2021-11-03 04:22:01,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:22:01,025 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2021-11-03 04:22:01,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-11-03 04:22:01,026 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2021-11-03 04:22:01,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 04:22:01,027 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:22:01,028 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:22:01,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:22:01,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:22:01,245 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:22:01,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:22:01,246 INFO L85 PathProgramCache]: Analyzing trace with hash -62606256, now seen corresponding path program 1 times [2021-11-03 04:22:01,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:22:01,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [924130703] [2021-11-03 04:22:01,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:22:01,248 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:22:01,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:22:01,256 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:22:01,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:22:01,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:22:01,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 04:22:01,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:22:01,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:22:01,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:22:01,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:22:01,961 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:22:01,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [924130703] [2021-11-03 04:22:01,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [924130703] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:22:01,962 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:22:01,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-03 04:22:01,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628352278] [2021-11-03 04:22:01,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 04:22:01,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:22:01,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 04:22:01,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:22:01,972 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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) [2021-11-03 04:22:02,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:22:02,772 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2021-11-03 04:22:02,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:22:02,773 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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 11 [2021-11-03 04:22:02,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:22:02,774 INFO L225 Difference]: With dead ends: 34 [2021-11-03 04:22:02,774 INFO L226 Difference]: Without dead ends: 18 [2021-11-03 04:22:02,775 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:22:02,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-03 04:22:02,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-11-03 04:22:02,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 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) [2021-11-03 04:22:02,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-11-03 04:22:02,780 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2021-11-03 04:22:02,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:22:02,780 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-11-03 04:22:02,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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) [2021-11-03 04:22:02,781 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-11-03 04:22:02,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-03 04:22:02,782 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:22:02,782 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:22:02,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:22:02,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:22:02,998 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:22:02,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:22:02,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1612289523, now seen corresponding path program 1 times [2021-11-03 04:22:03,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:22:03,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1735080089] [2021-11-03 04:22:03,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:22:03,001 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:22:03,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:22:03,009 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:22:03,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:22:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:22:03,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:22:03,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:22:03,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:22:03,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:22:03,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:22:03,783 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:22:03,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1735080089] [2021-11-03 04:22:03,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1735080089] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:22:03,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:22:03,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:22:03,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350912205] [2021-11-03 04:22:03,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:22:03,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:22:03,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:22:03,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:22:03,787 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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) [2021-11-03 04:22:03,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:22:03,931 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-11-03 04:22:03,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:22:03,932 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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 15 [2021-11-03 04:22:03,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:22:03,932 INFO L225 Difference]: With dead ends: 18 [2021-11-03 04:22:03,932 INFO L226 Difference]: Without dead ends: 0 [2021-11-03 04:22:03,933 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:22:03,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-03 04:22:03,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-03 04:22:03,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:22:03,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-03 04:22:03,934 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-11-03 04:22:03,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:22:03,934 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-03 04:22:03,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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) [2021-11-03 04:22:03,934 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-03 04:22:03,935 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-03 04:22:03,937 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:22:03,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:22:04,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:22:04,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-03 04:22:04,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:22:04,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:22:04,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:22:04,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:22:04,259 INFO L857 garLoopResultBuilder]: For program point L27(lines 27 33) no Hoare annotation was computed. [2021-11-03 04:22:04,260 INFO L857 garLoopResultBuilder]: For program point L73(lines 73 76) no Hoare annotation was computed. [2021-11-03 04:22:04,260 INFO L857 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2021-11-03 04:22:04,260 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-03 04:22:04,260 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-03 04:22:04,260 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-03 04:22:04,260 INFO L857 garLoopResultBuilder]: For program point L28(lines 28 32) no Hoare annotation was computed. [2021-11-03 04:22:04,261 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 74) no Hoare annotation was computed. [2021-11-03 04:22:04,261 INFO L860 garLoopResultBuilder]: At program point L78(lines 61 79) the Hoare annotation is: true [2021-11-03 04:22:04,261 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 48) no Hoare annotation was computed. [2021-11-03 04:22:04,261 INFO L857 garLoopResultBuilder]: For program point L74(line 74) no Hoare annotation was computed. [2021-11-03 04:22:04,262 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-03 04:22:04,262 INFO L857 garLoopResultBuilder]: For program point L25(lines 25 49) no Hoare annotation was computed. [2021-11-03 04:22:04,262 INFO L857 garLoopResultBuilder]: For program point L50(lines 50 54) no Hoare annotation was computed. [2021-11-03 04:22:04,262 INFO L857 garLoopResultBuilder]: For program point L50-1(lines 15 56) no Hoare annotation was computed. [2021-11-03 04:22:04,262 INFO L857 garLoopResultBuilder]: For program point L50-2(lines 50 54) no Hoare annotation was computed. [2021-11-03 04:22:04,262 INFO L857 garLoopResultBuilder]: For program point L38(lines 38 42) no Hoare annotation was computed. [2021-11-03 04:22:04,263 INFO L857 garLoopResultBuilder]: For program point L30(lines 30 32) no Hoare annotation was computed. [2021-11-03 04:22:04,263 INFO L853 garLoopResultBuilder]: At program point L59(line 59) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_ceil_float_~x ULTIMATE.start_ceil_float_~x)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) |ULTIMATE.start_ceil_float_#res|))) [2021-11-03 04:22:04,263 INFO L857 garLoopResultBuilder]: For program point L26(lines 26 43) no Hoare annotation was computed. [2021-11-03 04:22:04,263 INFO L853 garLoopResultBuilder]: At program point L55(lines 15 56) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_ceil_float_~x ULTIMATE.start_ceil_float_~x)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) |ULTIMATE.start_ceil_float_#res|))) [2021-11-03 04:22:04,264 INFO L857 garLoopResultBuilder]: For program point L18-1(lines 18 22) no Hoare annotation was computed. [2021-11-03 04:22:04,264 INFO L853 garLoopResultBuilder]: At program point L18-2(lines 18 22) the Hoare annotation is: (not (fp.eq ULTIMATE.start_ceil_float_~x ULTIMATE.start_ceil_float_~x)) [2021-11-03 04:22:04,264 INFO L857 garLoopResultBuilder]: For program point L18-3(lines 18 22) no Hoare annotation was computed. [2021-11-03 04:22:04,264 INFO L857 garLoopResultBuilder]: For program point L39(lines 39 40) no Hoare annotation was computed. [2021-11-03 04:22:04,264 INFO L857 garLoopResultBuilder]: For program point L39-2(lines 39 40) no Hoare annotation was computed. [2021-11-03 04:22:04,269 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-03 04:22:04,271 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 04:22:04,278 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-03 04:22:04,285 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-03 04:22:04,287 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-03 04:22:04,288 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-03 04:22:04,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:22:04 BoogieIcfgContainer [2021-11-03 04:22:04,290 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 04:22:04,291 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 04:22:04,291 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 04:22:04,291 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 04:22:04,292 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:22:00" (3/4) ... [2021-11-03 04:22:04,296 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-03 04:22:04,310 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-11-03 04:22:04,310 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-11-03 04:22:04,311 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-03 04:22:04,311 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-03 04:22:04,343 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !~fp.eq~FLOAT(x, x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) [2021-11-03 04:22:04,344 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~FLOAT(x, x) && 1bv32 == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) [2021-11-03 04:22:04,369 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/witness.graphml [2021-11-03 04:22:04,369 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 04:22:04,371 INFO L168 Benchmark]: Toolchain (without parser) took 5758.21 ms. Allocated memory was 52.4 MB in the beginning and 71.3 MB in the end (delta: 18.9 MB). Free memory was 29.1 MB in the beginning and 33.4 MB in the end (delta: -4.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 16.1 GB. [2021-11-03 04:22:04,372 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 52.4 MB. Free memory was 32.8 MB in the beginning and 32.7 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:22:04,373 INFO L168 Benchmark]: CACSL2BoogieTranslator took 390.86 ms. Allocated memory was 52.4 MB in the beginning and 71.3 MB in the end (delta: 18.9 MB). Free memory was 28.9 MB in the beginning and 54.9 MB in the end (delta: -25.9 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. [2021-11-03 04:22:04,374 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.40 ms. Allocated memory is still 71.3 MB. Free memory was 54.9 MB in the beginning and 53.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:22:04,374 INFO L168 Benchmark]: Boogie Preprocessor took 77.48 ms. Allocated memory is still 71.3 MB. Free memory was 53.3 MB in the beginning and 51.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:22:04,375 INFO L168 Benchmark]: RCFGBuilder took 1202.35 ms. Allocated memory is still 71.3 MB. Free memory was 51.8 MB in the beginning and 40.1 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-03 04:22:04,376 INFO L168 Benchmark]: TraceAbstraction took 3897.72 ms. Allocated memory is still 71.3 MB. Free memory was 39.6 MB in the beginning and 36.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2021-11-03 04:22:04,376 INFO L168 Benchmark]: Witness Printer took 78.74 ms. Allocated memory is still 71.3 MB. Free memory was 36.3 MB in the beginning and 33.4 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-03 04:22:04,380 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 52.4 MB. Free memory was 32.8 MB in the beginning and 32.7 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 390.86 ms. Allocated memory was 52.4 MB in the beginning and 71.3 MB in the end (delta: 18.9 MB). Free memory was 28.9 MB in the beginning and 54.9 MB in the end (delta: -25.9 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 89.40 ms. Allocated memory is still 71.3 MB. Free memory was 54.9 MB in the beginning and 53.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 77.48 ms. Allocated memory is still 71.3 MB. Free memory was 53.3 MB in the beginning and 51.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1202.35 ms. Allocated memory is still 71.3 MB. Free memory was 51.8 MB in the beginning and 40.1 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3897.72 ms. Allocated memory is still 71.3 MB. Free memory was 39.6 MB in the beginning and 36.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * Witness Printer took 78.74 ms. Allocated memory is still 71.3 MB. Free memory was 36.3 MB in the beginning and 33.4 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 74]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.7s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 23 SDslu, 49 SDs, 0 SdLazy, 39 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 13, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 32 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 66 ConstructedInterpolants, 11 QuantifiedInterpolants, 224 SizeOfPredicates, 19 NumberOfNonLiveVariables, 142 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 59]: Loop Invariant [2021-11-03 04:22:04,393 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-03 04:22:04,394 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (!~fp.eq~FLOAT(x, x) && 1bv32 == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant [2021-11-03 04:22:04,394 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-03 04:22:04,395 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: !~fp.eq~FLOAT(x, x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) RESULT: Ultimate proved your program to be correct! [2021-11-03 04:22:04,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358252b-5770-461d-8659-cecf2a987dc3/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE