./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1122b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1122b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 531a1139fb1df73d7771aceceeca279cd2242c70bbd9f853f2d0e457d633cadc --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 10:43:59,846 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 10:43:59,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 10:43:59,909 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 10:43:59,910 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 10:43:59,914 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 10:43:59,917 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 10:43:59,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 10:43:59,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 10:43:59,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 10:43:59,931 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 10:43:59,933 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 10:43:59,933 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 10:43:59,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 10:43:59,939 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 10:43:59,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 10:43:59,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 10:43:59,947 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 10:43:59,949 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 10:43:59,960 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 10:43:59,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 10:43:59,964 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 10:43:59,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 10:43:59,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 10:43:59,978 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 10:43:59,978 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 10:43:59,979 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 10:43:59,981 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 10:43:59,982 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 10:43:59,983 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 10:43:59,984 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 10:43:59,985 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 10:43:59,987 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 10:43:59,988 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 10:43:59,990 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 10:43:59,990 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 10:43:59,991 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 10:43:59,992 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 10:43:59,992 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 10:43:59,993 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 10:43:59,994 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 10:43:59,995 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 10:44:00,041 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 10:44:00,042 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 10:44:00,043 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 10:44:00,043 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 10:44:00,051 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 10:44:00,051 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 10:44:00,051 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 10:44:00,052 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 10:44:00,052 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 10:44:00,052 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 10:44:00,053 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 10:44:00,053 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 10:44:00,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 10:44:00,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 10:44:00,054 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 10:44:00,054 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 10:44:00,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 10:44:00,055 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 10:44:00,055 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 10:44:00,055 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 10:44:00,056 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 10:44:00,056 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 10:44:00,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:44:00,056 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 10:44:00,057 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 10:44:00,057 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 10:44:00,057 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 10:44:00,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 10:44:00,058 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 10:44:00,059 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 10:44:00,060 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 10:44:00,060 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 10:44:00,060 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 531a1139fb1df73d7771aceceeca279cd2242c70bbd9f853f2d0e457d633cadc [2021-11-09 10:44:00,341 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 10:44:00,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 10:44:00,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 10:44:00,366 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 10:44:00,366 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 10:44:00,367 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/float-newlib/float_req_bl_1122b.c [2021-11-09 10:44:00,438 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/data/11b736f25/8043c37d4cd745aca5862fcf0aae248b/FLAGd5b5a663d [2021-11-09 10:44:00,862 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 10:44:00,862 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/sv-benchmarks/c/float-newlib/float_req_bl_1122b.c [2021-11-09 10:44:00,892 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/data/11b736f25/8043c37d4cd745aca5862fcf0aae248b/FLAGd5b5a663d [2021-11-09 10:44:01,259 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/data/11b736f25/8043c37d4cd745aca5862fcf0aae248b [2021-11-09 10:44:01,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 10:44:01,262 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 10:44:01,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 10:44:01,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 10:44:01,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 10:44:01,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:44:01" (1/1) ... [2021-11-09 10:44:01,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c1f71a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:01, skipping insertion in model container [2021-11-09 10:44:01,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:44:01" (1/1) ... [2021-11-09 10:44:01,288 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 10:44:01,313 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:44:01,521 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_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/sv-benchmarks/c/float-newlib/float_req_bl_1122b.c[2726,2739] [2021-11-09 10:44:01,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:44:01,532 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 10:44:01,574 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_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/sv-benchmarks/c/float-newlib/float_req_bl_1122b.c[2726,2739] [2021-11-09 10:44:01,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:44:01,590 INFO L208 MainTranslator]: Completed translation [2021-11-09 10:44:01,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:01 WrapperNode [2021-11-09 10:44:01,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 10:44:01,592 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 10:44:01,592 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 10:44:01,593 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 10:44:01,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:01" (1/1) ... [2021-11-09 10:44:01,611 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:01" (1/1) ... [2021-11-09 10:44:01,640 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 10:44:01,641 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 10:44:01,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 10:44:01,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 10:44:01,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:01" (1/1) ... [2021-11-09 10:44:01,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:01" (1/1) ... [2021-11-09 10:44:01,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:01" (1/1) ... [2021-11-09 10:44:01,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:01" (1/1) ... [2021-11-09 10:44:01,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:01" (1/1) ... [2021-11-09 10:44:01,672 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:01" (1/1) ... [2021-11-09 10:44:01,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:01" (1/1) ... [2021-11-09 10:44:01,678 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 10:44:01,679 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 10:44:01,679 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 10:44:01,679 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 10:44:01,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:01" (1/1) ... [2021-11-09 10:44:01,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:44:01,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:44:01,742 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 10:44:01,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 10:44:01,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 10:44:01,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 10:44:01,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-09 10:44:01,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-09 10:44:01,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-09 10:44:01,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 10:44:01,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 10:44:01,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-09 10:44:01,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-11-09 10:44:01,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 10:44:02,131 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 10:44:02,132 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2021-11-09 10:44:02,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:44:02 BoogieIcfgContainer [2021-11-09 10:44:02,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 10:44:02,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 10:44:02,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 10:44:02,139 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 10:44:02,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:44:01" (1/3) ... [2021-11-09 10:44:02,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6463c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:44:02, skipping insertion in model container [2021-11-09 10:44:02,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:01" (2/3) ... [2021-11-09 10:44:02,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6463c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:44:02, skipping insertion in model container [2021-11-09 10:44:02,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:44:02" (3/3) ... [2021-11-09 10:44:02,143 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1122b.c [2021-11-09 10:44:02,148 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 10:44:02,149 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 10:44:02,194 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 10:44:02,200 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 10:44:02,200 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-09 10:44:02,216 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 40 states have (on average 1.75) internal successors, (70), 41 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:44:02,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-09 10:44:02,221 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:02,222 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:44:02,222 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:44:02,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:02,228 INFO L85 PathProgramCache]: Analyzing trace with hash 666555284, now seen corresponding path program 1 times [2021-11-09 10:44:02,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:44:02,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340127909] [2021-11-09 10:44:02,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:02,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:44:02,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:44:02,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:44:02,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:44:02,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340127909] [2021-11-09 10:44:02,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340127909] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:44:02,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:44:02,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 10:44:02,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432006540] [2021-11-09 10:44:02,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 10:44:02,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:44:02,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 10:44:02,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 10:44:02,512 INFO L87 Difference]: Start difference. First operand has 42 states, 40 states have (on average 1.75) internal successors, (70), 41 states have internal predecessors, (70), 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) [2021-11-09 10:44:02,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:44:02,547 INFO L93 Difference]: Finished difference Result 82 states and 138 transitions. [2021-11-09 10:44:02,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 10:44:02,549 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 [2021-11-09 10:44:02,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:44:02,559 INFO L225 Difference]: With dead ends: 82 [2021-11-09 10:44:02,559 INFO L226 Difference]: Without dead ends: 39 [2021-11-09 10:44:02,564 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 10:44:02,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-11-09 10:44:02,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-11-09 10:44:02,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.4210526315789473) internal successors, (54), 38 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:44:02,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 54 transitions. [2021-11-09 10:44:02,604 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 54 transitions. Word has length 10 [2021-11-09 10:44:02,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:44:02,605 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 54 transitions. [2021-11-09 10:44:02,606 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) [2021-11-09 10:44:02,606 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 54 transitions. [2021-11-09 10:44:02,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-09 10:44:02,607 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:02,608 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:44:02,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 10:44:02,609 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:44:02,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:02,613 INFO L85 PathProgramCache]: Analyzing trace with hash 131116369, now seen corresponding path program 1 times [2021-11-09 10:44:02,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:44:02,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386683156] [2021-11-09 10:44:02,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:02,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:44:02,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 10:44:02,749 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 10:44:02,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 10:44:02,874 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 10:44:02,874 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-09 10:44:02,876 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 10:44:02,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 10:44:02,885 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-09 10:44:02,888 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 10:44:02,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 10:44:02 BoogieIcfgContainer [2021-11-09 10:44:02,931 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 10:44:02,932 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 10:44:02,932 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 10:44:02,932 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 10:44:02,933 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:44:02" (3/4) ... [2021-11-09 10:44:02,946 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-09 10:44:02,946 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 10:44:02,948 INFO L168 Benchmark]: Toolchain (without parser) took 1684.52 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 55.1 MB in the beginning and 89.7 MB in the end (delta: -34.6 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. [2021-11-09 10:44:02,949 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 90.2 MB. Free memory was 59.9 MB in the beginning and 59.9 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:44:02,950 INFO L168 Benchmark]: CACSL2BoogieTranslator took 327.25 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 55.1 MB in the beginning and 87.3 MB in the end (delta: -32.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 10:44:02,950 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.05 ms. Allocated memory is still 113.2 MB. Free memory was 87.3 MB in the beginning and 85.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 10:44:02,951 INFO L168 Benchmark]: Boogie Preprocessor took 37.45 ms. Allocated memory is still 113.2 MB. Free memory was 85.2 MB in the beginning and 83.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 10:44:02,952 INFO L168 Benchmark]: RCFGBuilder took 455.17 ms. Allocated memory is still 113.2 MB. Free memory was 83.1 MB in the beginning and 68.4 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-09 10:44:02,953 INFO L168 Benchmark]: TraceAbstraction took 795.24 ms. Allocated memory is still 113.2 MB. Free memory was 68.4 MB in the beginning and 41.1 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-11-09 10:44:02,953 INFO L168 Benchmark]: Witness Printer took 14.55 ms. Allocated memory is still 113.2 MB. Free memory was 41.1 MB in the beginning and 89.7 MB in the end (delta: -48.6 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2021-11-09 10:44:02,967 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 90.2 MB. Free memory was 59.9 MB in the beginning and 59.9 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 327.25 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 55.1 MB in the beginning and 87.3 MB in the end (delta: -32.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.05 ms. Allocated memory is still 113.2 MB. Free memory was 87.3 MB in the beginning and 85.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.45 ms. Allocated memory is still 113.2 MB. Free memory was 85.2 MB in the beginning and 83.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 455.17 ms. Allocated memory is still 113.2 MB. Free memory was 83.1 MB in the beginning and 68.4 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 795.24 ms. Allocated memory is still 113.2 MB. Free memory was 68.4 MB in the beginning and 41.1 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * Witness Printer took 14.55 ms. Allocated memory is still 113.2 MB. Free memory was 41.1 MB in the beginning and 89.7 MB in the end (delta: -48.6 MB). Peak memory consumption was 7.1 MB. 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: 125]: 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 110, overapproximation of someUnaryDOUBLEoperation at line 16, overapproximation of bitwiseAnd at line 32, overapproximation of someBinaryArithmeticFLOAToperation at line 37, overapproximation of bitwiseXor at line 33. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1, Zero_fmod={6:0}] [L119] float x = -1.0f / 0.0f; [L120] float y = __VERIFIER_nondet_float(); [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [one_fmod=1, Zero_fmod={6:0}] [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (hx) = gf_u.word [L28] ieee_float_shape_type gf_u; [L29] gf_u.value = (y) [L30] EXPR gf_u.word [L30] (hy) = gf_u.word [L32] sx = hx & 0x80000000 [L33] hx ^= sx [L34] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={6:0}] [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L37] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={6:0}] [L121] float res = fmod_float(x, y); [L110] return x != x; VAL [one_fmod=1, Zero_fmod={6:0}] [L124] COND TRUE !isnan_float(res) [L125] reach_error() VAL [one_fmod=1, Zero_fmod={6:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 57 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=42occurred 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, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-09 10:44:03,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1122b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 531a1139fb1df73d7771aceceeca279cd2242c70bbd9f853f2d0e457d633cadc --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 10:44:05,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 10:44:05,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 10:44:05,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 10:44:05,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 10:44:05,588 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 10:44:05,589 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 10:44:05,592 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 10:44:05,594 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 10:44:05,596 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 10:44:05,597 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 10:44:05,599 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 10:44:05,599 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 10:44:05,601 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 10:44:05,602 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 10:44:05,604 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 10:44:05,605 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 10:44:05,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 10:44:05,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 10:44:05,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 10:44:05,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 10:44:05,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 10:44:05,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 10:44:05,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 10:44:05,632 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 10:44:05,633 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 10:44:05,633 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 10:44:05,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 10:44:05,635 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 10:44:05,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 10:44:05,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 10:44:05,637 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 10:44:05,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 10:44:05,640 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 10:44:05,641 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 10:44:05,641 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 10:44:05,642 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 10:44:05,643 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 10:44:05,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 10:44:05,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 10:44:05,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 10:44:05,660 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-09 10:44:05,706 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 10:44:05,706 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 10:44:05,707 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 10:44:05,707 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 10:44:05,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 10:44:05,710 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 10:44:05,710 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 10:44:05,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 10:44:05,710 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 10:44:05,710 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 10:44:05,711 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 10:44:05,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 10:44:05,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 10:44:05,712 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 10:44:05,712 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-09 10:44:05,712 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-09 10:44:05,713 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 10:44:05,713 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 10:44:05,713 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 10:44:05,713 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 10:44:05,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 10:44:05,714 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 10:44:05,714 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 10:44:05,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:44:05,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 10:44:05,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 10:44:05,715 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 10:44:05,715 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-09 10:44:05,715 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-09 10:44:05,715 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 10:44:05,715 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 10:44:05,715 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 10:44:05,716 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 10:44:05,716 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-09 10:44:05,716 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_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 531a1139fb1df73d7771aceceeca279cd2242c70bbd9f853f2d0e457d633cadc [2021-11-09 10:44:06,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 10:44:06,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 10:44:06,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 10:44:06,195 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 10:44:06,196 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 10:44:06,197 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/float-newlib/float_req_bl_1122b.c [2021-11-09 10:44:06,270 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/data/f648050c9/44b14ec55dea4d53b88c68fee9099f31/FLAG42871defb [2021-11-09 10:44:06,789 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 10:44:06,790 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/sv-benchmarks/c/float-newlib/float_req_bl_1122b.c [2021-11-09 10:44:06,801 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/data/f648050c9/44b14ec55dea4d53b88c68fee9099f31/FLAG42871defb [2021-11-09 10:44:07,145 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/data/f648050c9/44b14ec55dea4d53b88c68fee9099f31 [2021-11-09 10:44:07,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 10:44:07,148 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 10:44:07,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 10:44:07,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 10:44:07,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 10:44:07,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:44:07" (1/1) ... [2021-11-09 10:44:07,155 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@309c69e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:07, skipping insertion in model container [2021-11-09 10:44:07,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:44:07" (1/1) ... [2021-11-09 10:44:07,163 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 10:44:07,183 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:44:07,437 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_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/sv-benchmarks/c/float-newlib/float_req_bl_1122b.c[2726,2739] [2021-11-09 10:44:07,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:44:07,467 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 10:44:07,550 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_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/sv-benchmarks/c/float-newlib/float_req_bl_1122b.c[2726,2739] [2021-11-09 10:44:07,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:44:07,578 INFO L208 MainTranslator]: Completed translation [2021-11-09 10:44:07,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:07 WrapperNode [2021-11-09 10:44:07,579 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 10:44:07,581 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 10:44:07,581 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 10:44:07,581 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 10:44:07,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:07" (1/1) ... [2021-11-09 10:44:07,613 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:07" (1/1) ... [2021-11-09 10:44:07,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 10:44:07,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 10:44:07,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 10:44:07,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 10:44:07,665 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:07" (1/1) ... [2021-11-09 10:44:07,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:07" (1/1) ... [2021-11-09 10:44:07,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:07" (1/1) ... [2021-11-09 10:44:07,686 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:07" (1/1) ... [2021-11-09 10:44:07,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:07" (1/1) ... [2021-11-09 10:44:07,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:07" (1/1) ... [2021-11-09 10:44:07,718 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:07" (1/1) ... [2021-11-09 10:44:07,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 10:44:07,738 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 10:44:07,738 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 10:44:07,739 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 10:44:07,739 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:07" (1/1) ... [2021-11-09 10:44:07,748 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:44:07,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:44:07,777 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 10:44:07,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 10:44:07,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2021-11-09 10:44:07,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-09 10:44:07,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 10:44:07,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-11-09 10:44:07,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-09 10:44:07,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 10:44:07,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 10:44:07,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-11-09 10:44:07,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-09 10:44:07,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 10:44:10,550 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 10:44:10,551 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2021-11-09 10:44:10,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:44:10 BoogieIcfgContainer [2021-11-09 10:44:10,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 10:44:10,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 10:44:10,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 10:44:10,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 10:44:10,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:44:07" (1/3) ... [2021-11-09 10:44:10,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3753ab6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:44:10, skipping insertion in model container [2021-11-09 10:44:10,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:07" (2/3) ... [2021-11-09 10:44:10,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3753ab6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:44:10, skipping insertion in model container [2021-11-09 10:44:10,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:44:10" (3/3) ... [2021-11-09 10:44:10,562 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1122b.c [2021-11-09 10:44:10,568 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 10:44:10,568 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 10:44:10,617 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 10:44:10,623 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 10:44:10,623 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-09 10:44:10,638 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 40 states have (on average 1.75) internal successors, (70), 41 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:44:10,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-09 10:44:10,643 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:10,644 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:44:10,644 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:44:10,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:10,651 INFO L85 PathProgramCache]: Analyzing trace with hash 666555284, now seen corresponding path program 1 times [2021-11-09 10:44:10,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:44:10,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [455371861] [2021-11-09 10:44:10,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:10,665 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:44:10,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:44:10,672 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:44:10,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-09 10:44:11,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:44:11,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-09 10:44:11,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:44:11,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:44:11,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:44:11,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:44:11,208 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:44:11,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [455371861] [2021-11-09 10:44:11,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [455371861] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:44:11,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:44:11,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 10:44:11,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318063721] [2021-11-09 10:44:11,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 10:44:11,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:44:11,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 10:44:11,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 10:44:11,241 INFO L87 Difference]: Start difference. First operand has 42 states, 40 states have (on average 1.75) internal successors, (70), 41 states have internal predecessors, (70), 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) [2021-11-09 10:44:11,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:44:11,268 INFO L93 Difference]: Finished difference Result 82 states and 138 transitions. [2021-11-09 10:44:11,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 10:44:11,270 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 [2021-11-09 10:44:11,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:44:11,280 INFO L225 Difference]: With dead ends: 82 [2021-11-09 10:44:11,280 INFO L226 Difference]: Without dead ends: 39 [2021-11-09 10:44:11,283 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 [2021-11-09 10:44:11,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-11-09 10:44:11,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-11-09 10:44:11,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.4210526315789473) internal successors, (54), 38 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:44:11,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 54 transitions. [2021-11-09 10:44:11,328 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 54 transitions. Word has length 10 [2021-11-09 10:44:11,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:44:11,328 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 54 transitions. [2021-11-09 10:44:11,329 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) [2021-11-09 10:44:11,329 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 54 transitions. [2021-11-09 10:44:11,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-09 10:44:11,331 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:11,332 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:44:11,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-09 10:44:11,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:44:11,548 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:44:11,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:11,549 INFO L85 PathProgramCache]: Analyzing trace with hash 131116369, now seen corresponding path program 1 times [2021-11-09 10:44:11,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:44:11,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1974892384] [2021-11-09 10:44:11,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:11,550 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:44:11,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:44:11,552 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:44:11,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-09 10:44:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:44:11,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-09 10:44:11,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:44:14,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:44:14,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:44:22,480 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_fmod_float_~y (_ FloatingPoint 8 24))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode c_ULTIMATE.start_fmod_float_~x ULTIMATE.start_fmod_float_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0)))) is different from true [2021-11-09 10:44:43,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:44:43,482 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:44:43,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1974892384] [2021-11-09 10:44:43,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1974892384] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:44:43,482 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:44:43,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-09 10:44:43,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256776566] [2021-11-09 10:44:43,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 10:44:43,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:44:43,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 10:44:43,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=69, Unknown=1, NotChecked=16, Total=110 [2021-11-09 10:44:43,487 INFO L87 Difference]: Start difference. First operand 39 states and 54 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 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) [2021-11-09 10:44:45,791 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_fmod_float_~y (_ FloatingPoint 8 24))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode c_ULTIMATE.start_fmod_float_~x ULTIMATE.start_fmod_float_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0)))) (= c_ULTIMATE.start_fmod_float_~x (fp.div c_currentRoundingMode (fp.neg ((_ to_fp 8 24) c_currentRoundingMode 1.0)) (_ +zero 8 24))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-09 10:44:51,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:44:51,388 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2021-11-09 10:44:51,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 10:44:51,388 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 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) Word has length 12 [2021-11-09 10:44:51,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:44:51,389 INFO L225 Difference]: With dead ends: 44 [2021-11-09 10:44:51,390 INFO L226 Difference]: Without dead ends: 39 [2021-11-09 10:44:51,391 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=41, Invalid=97, Unknown=2, NotChecked=42, Total=182 [2021-11-09 10:44:51,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-11-09 10:44:51,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-11-09 10:44:51,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.394736842105263) internal successors, (53), 38 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:44:51,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2021-11-09 10:44:51,397 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 12 [2021-11-09 10:44:51,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:44:51,398 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2021-11-09 10:44:51,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 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) [2021-11-09 10:44:51,398 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2021-11-09 10:44:51,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-09 10:44:51,399 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:51,400 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:44:51,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-09 10:44:51,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:44:51,601 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:44:51,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:51,601 INFO L85 PathProgramCache]: Analyzing trace with hash -302456811, now seen corresponding path program 1 times [2021-11-09 10:44:51,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:44:51,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1333107125] [2021-11-09 10:44:51,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:51,603 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:44:51,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:44:51,607 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:44:51,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-09 10:44:51,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:44:51,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 10:44:51,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:44:52,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:44:52,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:44:52,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:44:52,345 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:44:52,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1333107125] [2021-11-09 10:44:52,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1333107125] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:44:52,345 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:44:52,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-09 10:44:52,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964044189] [2021-11-09 10:44:52,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 10:44:52,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:44:52,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 10:44:52,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-09 10:44:52,348 INFO L87 Difference]: Start difference. First operand 39 states and 53 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) [2021-11-09 10:44:52,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:44:52,554 INFO L93 Difference]: Finished difference Result 39 states and 53 transitions. [2021-11-09 10:44:52,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:44:52,554 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 13 [2021-11-09 10:44:52,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:44:52,555 INFO L225 Difference]: With dead ends: 39 [2021-11-09 10:44:52,555 INFO L226 Difference]: Without dead ends: 0 [2021-11-09 10:44:52,556 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-09 10:44:52,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-09 10:44:52,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-09 10:44:52,556 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) [2021-11-09 10:44:52,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-09 10:44:52,557 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-11-09 10:44:52,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:44:52,557 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-09 10:44:52,583 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) [2021-11-09 10:44:52,583 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-09 10:44:52,584 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-09 10:44:52,586 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 10:44:52,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-09 10:44:52,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:44:52,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-09 10:44:52,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 10:44:52,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 10:44:52,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 10:44:52,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 10:44:52,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 10:44:52,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 10:44:52,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 10:44:52,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 10:44:52,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 10:44:52,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 10:44:55,228 INFO L857 garLoopResultBuilder]: For program point L27(lines 27 31) no Hoare annotation was computed. [2021-11-09 10:44:55,228 INFO L857 garLoopResultBuilder]: For program point L60-1(lines 60 65) no Hoare annotation was computed. [2021-11-09 10:44:55,228 INFO L857 garLoopResultBuilder]: For program point L27-1(lines 19 107) no Hoare annotation was computed. [2021-11-09 10:44:55,229 INFO L857 garLoopResultBuilder]: For program point L27-2(lines 27 31) no Hoare annotation was computed. [2021-11-09 10:44:55,229 INFO L853 garLoopResultBuilder]: At program point L110(line 110) the Hoare annotation is: (and (not (fp.eq |ULTIMATE.start_fmod_float_#res| |ULTIMATE.start_fmod_float_#res|)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) [2021-11-09 10:44:55,229 INFO L857 garLoopResultBuilder]: For program point L69(lines 69 75) no Hoare annotation was computed. [2021-11-09 10:44:55,229 INFO L857 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2021-11-09 10:44:55,229 INFO L853 garLoopResultBuilder]: At program point L69-2(lines 67 76) the Hoare annotation is: false [2021-11-09 10:44:55,230 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-09 10:44:55,230 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-09 10:44:55,230 INFO L857 garLoopResultBuilder]: For program point L78(lines 78 80) no Hoare annotation was computed. [2021-11-09 10:44:55,230 INFO L857 garLoopResultBuilder]: For program point L78-2(lines 19 107) no Hoare annotation was computed. [2021-11-09 10:44:55,230 INFO L857 garLoopResultBuilder]: For program point L54-1(lines 19 107) no Hoare annotation was computed. [2021-11-09 10:44:55,230 INFO L857 garLoopResultBuilder]: For program point L38(lines 38 39) no Hoare annotation was computed. [2021-11-09 10:44:55,230 INFO L860 garLoopResultBuilder]: At program point L129(lines 112 130) the Hoare annotation is: true [2021-11-09 10:44:55,231 INFO L857 garLoopResultBuilder]: For program point L88(lines 88 105) no Hoare annotation was computed. [2021-11-09 10:44:55,231 INFO L857 garLoopResultBuilder]: For program point L22-1(lines 22 26) no Hoare annotation was computed. [2021-11-09 10:44:55,231 INFO L853 garLoopResultBuilder]: At program point L22-2(lines 22 26) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_fmod_float_~x (fp.div currentRoundingMode (fp.neg ((_ to_fp 8 24) currentRoundingMode 1.0)) (_ +zero 8 24))))) [2021-11-09 10:44:55,231 INFO L857 garLoopResultBuilder]: For program point L72(lines 72 73) no Hoare annotation was computed. [2021-11-09 10:44:55,231 INFO L857 garLoopResultBuilder]: For program point L48(lines 19 107) no Hoare annotation was computed. [2021-11-09 10:44:55,231 INFO L853 garLoopResultBuilder]: At program point L106(lines 19 107) the Hoare annotation is: (not (fp.eq |ULTIMATE.start_fmod_float_#res| |ULTIMATE.start_fmod_float_#res|)) [2021-11-09 10:44:55,232 INFO L857 garLoopResultBuilder]: For program point L40(lines 40 41) no Hoare annotation was computed. [2021-11-09 10:44:55,232 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-09 10:44:55,232 INFO L857 garLoopResultBuilder]: For program point L90-1(lines 90 94) no Hoare annotation was computed. [2021-11-09 10:44:55,232 INFO L853 garLoopResultBuilder]: At program point L90-2(lines 90 94) the Hoare annotation is: false [2021-11-09 10:44:55,232 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 125) no Hoare annotation was computed. [2021-11-09 10:44:55,232 INFO L857 garLoopResultBuilder]: For program point L49-2(lines 49 50) no Hoare annotation was computed. [2021-11-09 10:44:55,232 INFO L853 garLoopResultBuilder]: At program point L49-3(lines 49 50) the Hoare annotation is: false [2021-11-09 10:44:55,233 INFO L857 garLoopResultBuilder]: For program point L99-1(lines 99 103) no Hoare annotation was computed. [2021-11-09 10:44:55,233 INFO L853 garLoopResultBuilder]: At program point L99-2(lines 99 103) the Hoare annotation is: false [2021-11-09 10:44:55,233 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-09 10:44:55,233 INFO L857 garLoopResultBuilder]: For program point L99-3(lines 99 103) no Hoare annotation was computed. [2021-11-09 10:44:55,233 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 127) no Hoare annotation was computed. [2021-11-09 10:44:55,233 INFO L857 garLoopResultBuilder]: For program point L42(lines 42 46) no Hoare annotation was computed. [2021-11-09 10:44:55,233 INFO L857 garLoopResultBuilder]: For program point L42-1(lines 19 107) no Hoare annotation was computed. [2021-11-09 10:44:55,234 INFO L857 garLoopResultBuilder]: For program point L67-1(lines 67 76) no Hoare annotation was computed. [2021-11-09 10:44:55,234 INFO L857 garLoopResultBuilder]: For program point L67-3(lines 67 76) no Hoare annotation was computed. [2021-11-09 10:44:55,234 INFO L857 garLoopResultBuilder]: For program point L125(line 125) no Hoare annotation was computed. [2021-11-09 10:44:55,234 INFO L853 garLoopResultBuilder]: At program point L84-2(lines 84 87) the Hoare annotation is: false [2021-11-09 10:44:55,234 INFO L857 garLoopResultBuilder]: For program point L84-3(lines 19 107) no Hoare annotation was computed. [2021-11-09 10:44:55,234 INFO L857 garLoopResultBuilder]: For program point L43-2(lines 43 44) no Hoare annotation was computed. [2021-11-09 10:44:55,234 INFO L853 garLoopResultBuilder]: At program point L43-3(lines 43 44) the Hoare annotation is: false [2021-11-09 10:44:55,239 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-09 10:44:55,240 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 10:44:55,251 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-09 10:44:55,252 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-09 10:44:55,252 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-09 10:44:55,253 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-09 10:44:55,253 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-09 10:44:55,253 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-09 10:44:55,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 10:44:55 BoogieIcfgContainer [2021-11-09 10:44:55,255 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 10:44:55,255 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 10:44:55,256 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 10:44:55,256 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 10:44:55,256 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:44:10" (3/4) ... [2021-11-09 10:44:55,259 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-09 10:44:55,270 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-11-09 10:44:55,270 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-11-09 10:44:55,270 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-09 10:44:55,271 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-09 10:44:55,294 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(currentRoundingMode, 1.0)), ~Pluszero~LONGDOUBLE())) [2021-11-09 10:44:55,304 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/witness.graphml [2021-11-09 10:44:55,304 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 10:44:55,306 INFO L168 Benchmark]: Toolchain (without parser) took 48157.12 ms. Allocated memory was 67.1 MB in the beginning and 94.4 MB in the end (delta: 27.3 MB). Free memory was 49.4 MB in the beginning and 65.8 MB in the end (delta: -16.4 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. [2021-11-09 10:44:55,311 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 67.1 MB. Free memory was 49.2 MB in the beginning and 49.1 MB in the end (delta: 54.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:44:55,314 INFO L168 Benchmark]: CACSL2BoogieTranslator took 430.63 ms. Allocated memory is still 67.1 MB. Free memory was 49.2 MB in the beginning and 49.0 MB in the end (delta: 128.8 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-09 10:44:55,315 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.42 ms. Allocated memory is still 67.1 MB. Free memory was 49.0 MB in the beginning and 46.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 10:44:55,315 INFO L168 Benchmark]: Boogie Preprocessor took 81.51 ms. Allocated memory is still 67.1 MB. Free memory was 46.9 MB in the beginning and 45.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 10:44:55,316 INFO L168 Benchmark]: RCFGBuilder took 2814.75 ms. Allocated memory was 67.1 MB in the beginning and 94.4 MB in the end (delta: 27.3 MB). Free memory was 45.1 MB in the beginning and 75.4 MB in the end (delta: -30.3 MB). Peak memory consumption was 19.1 MB. Max. memory is 16.1 GB. [2021-11-09 10:44:55,316 INFO L168 Benchmark]: TraceAbstraction took 44700.08 ms. Allocated memory is still 94.4 MB. Free memory was 74.6 MB in the beginning and 68.5 MB in the end (delta: 6.1 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2021-11-09 10:44:55,317 INFO L168 Benchmark]: Witness Printer took 49.16 ms. Allocated memory is still 94.4 MB. Free memory was 68.5 MB in the beginning and 65.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 10:44:55,320 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 67.1 MB. Free memory was 49.2 MB in the beginning and 49.1 MB in the end (delta: 54.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 430.63 ms. Allocated memory is still 67.1 MB. Free memory was 49.2 MB in the beginning and 49.0 MB in the end (delta: 128.8 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 73.42 ms. Allocated memory is still 67.1 MB. Free memory was 49.0 MB in the beginning and 46.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 81.51 ms. Allocated memory is still 67.1 MB. Free memory was 46.9 MB in the beginning and 45.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2814.75 ms. Allocated memory was 67.1 MB in the beginning and 94.4 MB in the end (delta: 27.3 MB). Free memory was 45.1 MB in the beginning and 75.4 MB in the end (delta: -30.3 MB). Peak memory consumption was 19.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 44700.08 ms. Allocated memory is still 94.4 MB. Free memory was 74.6 MB in the beginning and 68.5 MB in the end (delta: 6.1 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Witness Printer took 49.16 ms. Allocated memory is still 94.4 MB. Free memory was 68.5 MB in the beginning and 65.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - 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 Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - 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: 125]: 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, 42 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 44.6s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 8.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.4s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 111 SDtfs, 12 SDslu, 262 SDs, 0 SdLazy, 40 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 12.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, InterpolantAutomatonStates: 14, 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, 10 LocationsWithAnnotation, 10 PreInvPairs, 14 NumberOfFragments, 33 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 32 FormulaSimplificationTreeSizeReductionInter, 2.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 32.4s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 64 ConstructedInterpolants, 14 QuantifiedInterpolants, 449 SizeOfPredicates, 19 NumberOfNonLiveVariables, 188 ConjunctsInSsa, 21 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: 110]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(\result, \result) && 1bv32 == \result - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 84]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 99]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 112]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 90]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant [2021-11-09 10:44:55,339 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-09 10:44:55,339 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-09 10:44:55,340 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-09 10:44:55,340 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-09 10:44:55,340 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-09 10:44:55,340 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(currentRoundingMode, 1.0)), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 43]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(\result, \result) RESULT: Ultimate proved your program to be correct! [2021-11-09 10:44:55,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d8fc21-f908-4f8f-a51a-9dc8e8cfd8f1/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE