./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1122a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1122a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 11d6107924de66a58b91836187b6b12fed7ff2a1cca830501395e849f6954c14 ..................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1122a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 11d6107924de66a58b91836187b6b12fed7ff2a1cca830501395e849f6954c14 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:28:35,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:28:35,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:28:35,483 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:28:35,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:28:35,485 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:28:35,487 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:28:35,489 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:28:35,491 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:28:35,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:28:35,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:28:35,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:28:35,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:28:35,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:28:35,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:28:35,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:28:35,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:28:35,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:28:35,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:28:35,516 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:28:35,518 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:28:35,524 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:28:35,526 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:28:35,527 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:28:35,530 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:28:35,536 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:28:35,537 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:28:35,538 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:28:35,538 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:28:35,540 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:28:35,542 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:28:35,542 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:28:35,544 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:28:35,545 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:28:35,547 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:28:35,547 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:28:35,548 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:28:35,548 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:28:35,548 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:28:35,549 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:28:35,550 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:28:35,551 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 10:28:35,597 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:28:35,597 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:28:35,598 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:28:35,598 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:28:35,599 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:28:35,599 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:28:35,599 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:28:35,599 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:28:35,599 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:28:35,600 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:28:35,600 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:28:35,600 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:28:35,600 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:28:35,600 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:28:35,601 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:28:35,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:28:35,601 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:28:35,602 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:28:35,602 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:28:35,602 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:28:35,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:28:35,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:28:35,603 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:28:35,603 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:28:35,603 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:28:35,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:28:35,603 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:28:35,604 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:28:35,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:28:35,604 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:28:35,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:28:35,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:28:35,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:28:35,605 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:28:35,605 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:28:35,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:28:35,605 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:28:35,606 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:28:35,606 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:28:35,606 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 11d6107924de66a58b91836187b6b12fed7ff2a1cca830501395e849f6954c14 [2021-10-24 10:28:35,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:28:35,907 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:28:35,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:28:35,911 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:28:35,912 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:28:35,913 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/float-newlib/float_req_bl_1122a.c [2021-10-24 10:28:35,985 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/data/968979626/5169cd4e3f034089a957c7300d57de52/FLAG9d6c9e7fc [2021-10-24 10:28:36,423 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:28:36,424 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/sv-benchmarks/c/float-newlib/float_req_bl_1122a.c [2021-10-24 10:28:36,445 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/data/968979626/5169cd4e3f034089a957c7300d57de52/FLAG9d6c9e7fc [2021-10-24 10:28:36,836 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/data/968979626/5169cd4e3f034089a957c7300d57de52 [2021-10-24 10:28:36,840 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:28:36,843 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:28:36,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:28:36,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:28:36,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:28:36,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:28:36" (1/1) ... [2021-10-24 10:28:36,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@532bbff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:36, skipping insertion in model container [2021-10-24 10:28:36,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:28:36" (1/1) ... [2021-10-24 10:28:36,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:28:36,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:28:37,070 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_256dcdc3-2fc7-438a-885f-6e0a30888889/sv-benchmarks/c/float-newlib/float_req_bl_1122a.c[2725,2738] [2021-10-24 10:28:37,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:28:37,079 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:28:37,112 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_256dcdc3-2fc7-438a-885f-6e0a30888889/sv-benchmarks/c/float-newlib/float_req_bl_1122a.c[2725,2738] [2021-10-24 10:28:37,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:28:37,124 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:28:37,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:37 WrapperNode [2021-10-24 10:28:37,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:28:37,126 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:28:37,126 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:28:37,126 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:28:37,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:37" (1/1) ... [2021-10-24 10:28:37,141 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:37" (1/1) ... [2021-10-24 10:28:37,168 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:28:37,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:28:37,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:28:37,169 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:28:37,177 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:37" (1/1) ... [2021-10-24 10:28:37,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:37" (1/1) ... [2021-10-24 10:28:37,181 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:37" (1/1) ... [2021-10-24 10:28:37,181 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:37" (1/1) ... [2021-10-24 10:28:37,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:37" (1/1) ... [2021-10-24 10:28:37,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:37" (1/1) ... [2021-10-24 10:28:37,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:37" (1/1) ... [2021-10-24 10:28:37,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:28:37,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:28:37,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:28:37,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:28:37,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:37" (1/1) ... [2021-10-24 10:28:37,223 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:28:37,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:28:37,243 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:28:37,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:28:37,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:28:37,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:28:37,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-24 10:28:37,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-24 10:28:37,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-24 10:28:37,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:28:37,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:28:37,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-24 10:28:37,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-10-24 10:28:37,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 10:28:37,816 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:28:37,816 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2021-10-24 10:28:37,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:28:37 BoogieIcfgContainer [2021-10-24 10:28:37,821 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:28:37,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:28:37,823 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:28:37,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:28:37,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:28:36" (1/3) ... [2021-10-24 10:28:37,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f6e8d78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:28:37, skipping insertion in model container [2021-10-24 10:28:37,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:37" (2/3) ... [2021-10-24 10:28:37,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f6e8d78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:28:37, skipping insertion in model container [2021-10-24 10:28:37,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:28:37" (3/3) ... [2021-10-24 10:28:37,830 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1122a.c [2021-10-24 10:28:37,835 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:28:37,835 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 10:28:37,891 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:28:37,897 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 10:28:37,898 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 10:28:37,909 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 32 states have (on average 1.75) internal successors, (56), 33 states have internal predecessors, (56), 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) [2021-10-24 10:28:37,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-24 10:28:37,913 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:28:37,914 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:28:37,914 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:28:37,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:28:37,919 INFO L82 PathProgramCache]: Analyzing trace with hash -2021166095, now seen corresponding path program 1 times [2021-10-24 10:28:37,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:28:37,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066663369] [2021-10-24 10:28:37,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:28:37,929 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:28:38,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:28:38,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:28:38,100 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:28:38,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066663369] [2021-10-24 10:28:38,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066663369] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:28:38,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:28:38,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 10:28:38,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641412276] [2021-10-24 10:28:38,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 10:28:38,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:28:38,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 10:28:38,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 10:28:38,125 INFO L87 Difference]: Start difference. First operand has 34 states, 32 states have (on average 1.75) internal successors, (56), 33 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:28:38,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:28:38,139 INFO L93 Difference]: Finished difference Result 67 states and 111 transitions. [2021-10-24 10:28:38,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 10:28:38,140 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-24 10:28:38,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:28:38,146 INFO L225 Difference]: With dead ends: 67 [2021-10-24 10:28:38,146 INFO L226 Difference]: Without dead ends: 32 [2021-10-24 10:28:38,148 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 10:28:38,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-24 10:28:38,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-24 10:28:38,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 31 states have internal predecessors, (44), 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) [2021-10-24 10:28:38,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 44 transitions. [2021-10-24 10:28:38,172 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 44 transitions. Word has length 8 [2021-10-24 10:28:38,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:28:38,173 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 44 transitions. [2021-10-24 10:28:38,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:28:38,173 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 44 transitions. [2021-10-24 10:28:38,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 10:28:38,174 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:28:38,174 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:28:38,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 10:28:38,174 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:28:38,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:28:38,175 INFO L82 PathProgramCache]: Analyzing trace with hash 342564116, now seen corresponding path program 1 times [2021-10-24 10:28:38,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:28:38,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010456445] [2021-10-24 10:28:38,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:28:38,176 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:28:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:28:38,241 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 10:28:38,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:28:38,310 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 10:28:38,311 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 10:28:38,312 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:28:38,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 10:28:38,319 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:28:38,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:28:38 BoogieIcfgContainer [2021-10-24 10:28:38,342 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:28:38,343 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:28:38,343 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:28:38,343 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:28:38,344 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:28:37" (3/4) ... [2021-10-24 10:28:38,346 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-24 10:28:38,346 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:28:38,348 INFO L168 Benchmark]: Toolchain (without parser) took 1504.64 ms. Allocated memory is still 96.5 MB. Free memory was 58.3 MB in the beginning and 55.3 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. [2021-10-24 10:28:38,349 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 96.5 MB. Free memory is still 74.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:28:38,349 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.24 ms. Allocated memory is still 96.5 MB. Free memory was 58.1 MB in the beginning and 70.7 MB in the end (delta: -12.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:28:38,350 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.20 ms. Allocated memory is still 96.5 MB. Free memory was 70.7 MB in the beginning and 68.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:28:38,351 INFO L168 Benchmark]: Boogie Preprocessor took 36.49 ms. Allocated memory is still 96.5 MB. Free memory was 68.6 MB in the beginning and 67.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:28:38,351 INFO L168 Benchmark]: RCFGBuilder took 615.73 ms. Allocated memory is still 96.5 MB. Free memory was 66.8 MB in the beginning and 49.0 MB in the end (delta: 17.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-24 10:28:38,352 INFO L168 Benchmark]: TraceAbstraction took 519.39 ms. Allocated memory is still 96.5 MB. Free memory was 48.3 MB in the beginning and 55.8 MB in the end (delta: -7.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:28:38,352 INFO L168 Benchmark]: Witness Printer took 3.53 ms. Allocated memory is still 96.5 MB. Free memory is still 55.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:28:38,355 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 96.5 MB. Free memory is still 74.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 280.24 ms. Allocated memory is still 96.5 MB. Free memory was 58.1 MB in the beginning and 70.7 MB in the end (delta: -12.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.20 ms. Allocated memory is still 96.5 MB. Free memory was 70.7 MB in the beginning and 68.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.49 ms. Allocated memory is still 96.5 MB. Free memory was 68.6 MB in the beginning and 67.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 615.73 ms. Allocated memory is still 96.5 MB. Free memory was 66.8 MB in the beginning and 49.0 MB in the end (delta: 17.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 519.39 ms. Allocated memory is still 96.5 MB. Free memory was 48.3 MB in the beginning and 55.8 MB in the end (delta: -7.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 3.53 ms. Allocated memory is still 96.5 MB. Free memory is still 55.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms 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, }; [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={9:0}] [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={9:0}] [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L37] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={9:0}] [L121] float res = fmod_float(x, y); [L110] return x != x; [L124] COND TRUE !isnan_float(res) [L125] reach_error() VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 431.6ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 7.5ms, AutomataDifference: 38.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 46 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 14.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 9.0ms SsaConstructionTime, 99.9ms SatisfiabilityAnalysisTime, 64.7ms InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-24 10:28:38,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:28:40,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:28:40,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:28:40,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:28:40,845 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:28:40,849 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:28:40,851 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:28:40,855 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:28:40,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:28:40,865 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:28:40,867 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:28:40,868 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:28:40,869 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:28:40,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:28:40,873 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:28:40,877 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:28:40,878 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:28:40,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:28:40,881 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:28:40,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:28:40,890 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:28:40,891 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:28:40,893 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:28:40,896 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:28:40,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:28:40,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:28:40,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:28:40,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:28:40,908 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:28:40,909 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:28:40,909 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:28:40,910 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:28:40,912 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:28:40,913 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:28:40,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:28:40,915 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:28:40,931 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:28:40,931 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:28:40,932 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:28:40,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:28:40,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:28:40,936 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-24 10:28:40,961 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:28:40,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:28:40,962 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:28:40,962 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:28:40,962 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:28:40,962 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:28:40,963 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:28:40,963 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:28:40,963 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:28:40,964 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:28:40,964 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:28:40,964 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:28:40,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:28:40,965 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:28:40,965 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:28:40,965 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:28:40,965 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:28:40,965 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 10:28:40,966 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 10:28:40,966 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:28:40,966 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:28:40,966 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:28:40,967 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:28:40,967 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:28:40,967 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 10:28:40,967 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:28:40,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:28:40,968 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:28:40,968 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:28:40,968 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:28:40,968 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 10:28:40,969 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 10:28:40,969 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:28:40,969 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:28:40,969 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:28:40,970 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_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 11d6107924de66a58b91836187b6b12fed7ff2a1cca830501395e849f6954c14 [2021-10-24 10:28:41,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:28:41,360 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:28:41,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:28:41,363 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:28:41,364 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:28:41,367 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/float-newlib/float_req_bl_1122a.c [2021-10-24 10:28:41,432 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/data/e70e5af6c/e75ea0676324448a8849fc8ae94739a8/FLAGe9c63a43d [2021-10-24 10:28:41,935 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:28:41,936 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/sv-benchmarks/c/float-newlib/float_req_bl_1122a.c [2021-10-24 10:28:41,942 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/data/e70e5af6c/e75ea0676324448a8849fc8ae94739a8/FLAGe9c63a43d [2021-10-24 10:28:42,351 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/data/e70e5af6c/e75ea0676324448a8849fc8ae94739a8 [2021-10-24 10:28:42,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:28:42,357 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:28:42,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:28:42,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:28:42,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:28:42,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:28:42" (1/1) ... [2021-10-24 10:28:42,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@509291b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:42, skipping insertion in model container [2021-10-24 10:28:42,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:28:42" (1/1) ... [2021-10-24 10:28:42,383 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:28:42,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:28:42,632 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_256dcdc3-2fc7-438a-885f-6e0a30888889/sv-benchmarks/c/float-newlib/float_req_bl_1122a.c[2725,2738] [2021-10-24 10:28:42,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:28:42,644 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:28:42,694 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_256dcdc3-2fc7-438a-885f-6e0a30888889/sv-benchmarks/c/float-newlib/float_req_bl_1122a.c[2725,2738] [2021-10-24 10:28:42,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:28:42,724 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:28:42,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:42 WrapperNode [2021-10-24 10:28:42,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:28:42,726 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:28:42,726 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:28:42,726 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:28:42,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:42" (1/1) ... [2021-10-24 10:28:42,744 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:42" (1/1) ... [2021-10-24 10:28:42,776 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:28:42,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:28:42,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:28:42,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:28:42,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:42" (1/1) ... [2021-10-24 10:28:42,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:42" (1/1) ... [2021-10-24 10:28:42,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:42" (1/1) ... [2021-10-24 10:28:42,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:42" (1/1) ... [2021-10-24 10:28:42,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:42" (1/1) ... [2021-10-24 10:28:42,806 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:42" (1/1) ... [2021-10-24 10:28:42,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:42" (1/1) ... [2021-10-24 10:28:42,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:28:42,814 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:28:42,814 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:28:42,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:28:42,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:42" (1/1) ... [2021-10-24 10:28:42,821 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:28:42,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:28:42,856 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:28:42,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:28:42,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2021-10-24 10:28:42,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-24 10:28:42,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:28:42,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-10-24 10:28:42,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-24 10:28:42,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:28:42,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:28:42,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-24 10:28:42,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-24 10:28:42,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 10:28:45,461 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:28:45,461 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2021-10-24 10:28:45,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:28:45 BoogieIcfgContainer [2021-10-24 10:28:45,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:28:45,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:28:45,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:28:45,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:28:45,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:28:42" (1/3) ... [2021-10-24 10:28:45,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62bfdc64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:28:45, skipping insertion in model container [2021-10-24 10:28:45,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:42" (2/3) ... [2021-10-24 10:28:45,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62bfdc64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:28:45, skipping insertion in model container [2021-10-24 10:28:45,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:28:45" (3/3) ... [2021-10-24 10:28:45,471 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1122a.c [2021-10-24 10:28:45,478 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:28:45,479 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 10:28:45,524 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:28:45,530 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 10:28:45,531 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 10:28:45,544 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) [2021-10-24 10:28:45,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 10:28:45,549 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:28:45,550 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:28:45,550 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:28:45,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:28:45,555 INFO L82 PathProgramCache]: Analyzing trace with hash 666555284, now seen corresponding path program 1 times [2021-10-24 10:28:45,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:28:45,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1021495370] [2021-10-24 10:28:45,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:28:45,568 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:28:45,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:28:45,574 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:28:45,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 10:28:45,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:28:45,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-24 10:28:45,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:28:45,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:28:45,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:28:46,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:28:46,040 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:28:46,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1021495370] [2021-10-24 10:28:46,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1021495370] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:28:46,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:28:46,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-24 10:28:46,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23897449] [2021-10-24 10:28:46,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 10:28:46,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:28:46,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 10:28:46,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 10:28:46,068 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) [2021-10-24 10:28:46,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:28:46,085 INFO L93 Difference]: Finished difference Result 82 states and 138 transitions. [2021-10-24 10:28:46,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 10:28:46,086 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 [2021-10-24 10:28:46,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:28:46,094 INFO L225 Difference]: With dead ends: 82 [2021-10-24 10:28:46,094 INFO L226 Difference]: Without dead ends: 39 [2021-10-24 10:28:46,097 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 10:28:46,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-24 10:28:46,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-10-24 10:28:46,125 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) [2021-10-24 10:28:46,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 54 transitions. [2021-10-24 10:28:46,127 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 54 transitions. Word has length 10 [2021-10-24 10:28:46,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:28:46,128 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 54 transitions. [2021-10-24 10:28:46,128 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) [2021-10-24 10:28:46,128 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 54 transitions. [2021-10-24 10:28:46,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-24 10:28:46,129 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:28:46,129 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:28:46,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-24 10:28:46,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:28:46,346 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:28:46,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:28:46,350 INFO L82 PathProgramCache]: Analyzing trace with hash 131116369, now seen corresponding path program 1 times [2021-10-24 10:28:46,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:28:46,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1120851350] [2021-10-24 10:28:46,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:28:46,357 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:28:46,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:28:46,379 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:28:46,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 10:28:46,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:28:46,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-24 10:28:46,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:28:49,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:28:49,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:28:56,634 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 [2021-10-24 10:29:17,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:29:17,538 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:29:17,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1120851350] [2021-10-24 10:29:17,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1120851350] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:29:17,560 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:29:17,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-24 10:29:17,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448170427] [2021-10-24 10:29:17,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-24 10:29:17,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:29:17,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-24 10:29:17,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=69, Unknown=1, NotChecked=16, Total=110 [2021-10-24 10:29:17,565 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) [2021-10-24 10:29:19,805 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_fmod_float_~x (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) (_ +zero 8 24))) (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_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-24 10:29:23,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:29:23,088 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2021-10-24 10:29:23,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-24 10:29:23,089 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 [2021-10-24 10:29:23,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:29:23,090 INFO L225 Difference]: With dead ends: 44 [2021-10-24 10:29:23,090 INFO L226 Difference]: Without dead ends: 39 [2021-10-24 10:29:23,092 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 9289.3ms TimeCoverageRelationStatistics Valid=41, Invalid=97, Unknown=2, NotChecked=42, Total=182 [2021-10-24 10:29:23,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-24 10:29:23,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-10-24 10:29:23,099 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) [2021-10-24 10:29:23,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2021-10-24 10:29:23,101 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 12 [2021-10-24 10:29:23,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:29:23,101 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2021-10-24 10:29:23,102 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) [2021-10-24 10:29:23,102 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2021-10-24 10:29:23,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-24 10:29:23,103 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:29:23,103 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:29:23,120 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-24 10:29:23,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:29:23,306 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:29:23,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:29:23,309 INFO L82 PathProgramCache]: Analyzing trace with hash -302456811, now seen corresponding path program 1 times [2021-10-24 10:29:23,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:29:23,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1429204331] [2021-10-24 10:29:23,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:29:23,316 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:29:23,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:29:23,320 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:29:23,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-24 10:29:23,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:29:23,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-24 10:29:23,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:29:23,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:29:23,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:29:23,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:29:23,975 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:29:23,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1429204331] [2021-10-24 10:29:23,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1429204331] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:29:23,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:29:23,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7 [2021-10-24 10:29:23,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614497600] [2021-10-24 10:29:23,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-24 10:29:23,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:29:23,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-24 10:29:23,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:29:23,979 INFO L87 Difference]: Start difference. First operand 39 states and 53 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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) [2021-10-24 10:29:24,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:29:24,049 INFO L93 Difference]: Finished difference Result 39 states and 53 transitions. [2021-10-24 10:29:24,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:29:24,050 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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 [2021-10-24 10:29:24,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:29:24,051 INFO L225 Difference]: With dead ends: 39 [2021-10-24 10:29:24,051 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 10:29:24,051 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 241.6ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-24 10:29:24,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 10:29:24,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 10:29:24,052 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) [2021-10-24 10:29:24,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 10:29:24,052 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-10-24 10:29:24,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:29:24,053 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 10:29:24,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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) [2021-10-24 10:29:24,053 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 10:29:24,053 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 10:29:24,055 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:29:24,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-24 10:29:24,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:29:24,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-24 10:29:24,272 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:29:24,328 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:29:24,329 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:29:24,330 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:29:24,333 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:29:24,334 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:29:24,334 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:29:24,335 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:29:24,338 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:29:24,339 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:29:26,557 INFO L857 garLoopResultBuilder]: For program point L27(lines 27 31) no Hoare annotation was computed. [2021-10-24 10:29:26,557 INFO L857 garLoopResultBuilder]: For program point L60-1(lines 60 65) no Hoare annotation was computed. [2021-10-24 10:29:26,557 INFO L857 garLoopResultBuilder]: For program point L27-1(lines 19 107) no Hoare annotation was computed. [2021-10-24 10:29:26,558 INFO L857 garLoopResultBuilder]: For program point L27-2(lines 27 31) no Hoare annotation was computed. [2021-10-24 10:29:26,558 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|)) [2021-10-24 10:29:26,558 INFO L857 garLoopResultBuilder]: For program point L69(lines 69 75) no Hoare annotation was computed. [2021-10-24 10:29:26,558 INFO L857 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2021-10-24 10:29:26,559 INFO L853 garLoopResultBuilder]: At program point L69-2(lines 67 76) the Hoare annotation is: false [2021-10-24 10:29:26,559 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-24 10:29:26,559 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-24 10:29:26,559 INFO L857 garLoopResultBuilder]: For program point L78(lines 78 80) no Hoare annotation was computed. [2021-10-24 10:29:26,559 INFO L857 garLoopResultBuilder]: For program point L78-2(lines 19 107) no Hoare annotation was computed. [2021-10-24 10:29:26,560 INFO L857 garLoopResultBuilder]: For program point L54-1(lines 19 107) no Hoare annotation was computed. [2021-10-24 10:29:26,560 INFO L857 garLoopResultBuilder]: For program point L38(lines 38 39) no Hoare annotation was computed. [2021-10-24 10:29:26,560 INFO L860 garLoopResultBuilder]: At program point L129(lines 112 130) the Hoare annotation is: true [2021-10-24 10:29:26,560 INFO L857 garLoopResultBuilder]: For program point L88(lines 88 105) no Hoare annotation was computed. [2021-10-24 10:29:26,560 INFO L857 garLoopResultBuilder]: For program point L22-1(lines 22 26) no Hoare annotation was computed. [2021-10-24 10:29:26,561 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 ((_ to_fp 8 24) currentRoundingMode 1.0) (_ +zero 8 24))))) [2021-10-24 10:29:26,561 INFO L857 garLoopResultBuilder]: For program point L72(lines 72 73) no Hoare annotation was computed. [2021-10-24 10:29:26,561 INFO L857 garLoopResultBuilder]: For program point L48(lines 19 107) no Hoare annotation was computed. [2021-10-24 10:29:26,561 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|)) [2021-10-24 10:29:26,561 INFO L857 garLoopResultBuilder]: For program point L40(lines 40 41) no Hoare annotation was computed. [2021-10-24 10:29:26,562 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-24 10:29:26,562 INFO L857 garLoopResultBuilder]: For program point L90-1(lines 90 94) no Hoare annotation was computed. [2021-10-24 10:29:26,562 INFO L853 garLoopResultBuilder]: At program point L90-2(lines 90 94) the Hoare annotation is: false [2021-10-24 10:29:26,562 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 125) no Hoare annotation was computed. [2021-10-24 10:29:26,562 INFO L857 garLoopResultBuilder]: For program point L49-2(lines 49 50) no Hoare annotation was computed. [2021-10-24 10:29:26,563 INFO L853 garLoopResultBuilder]: At program point L49-3(lines 49 50) the Hoare annotation is: false [2021-10-24 10:29:26,563 INFO L857 garLoopResultBuilder]: For program point L99-1(lines 99 103) no Hoare annotation was computed. [2021-10-24 10:29:26,563 INFO L853 garLoopResultBuilder]: At program point L99-2(lines 99 103) the Hoare annotation is: false [2021-10-24 10:29:26,563 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-24 10:29:26,563 INFO L857 garLoopResultBuilder]: For program point L99-3(lines 99 103) no Hoare annotation was computed. [2021-10-24 10:29:26,564 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 127) no Hoare annotation was computed. [2021-10-24 10:29:26,564 INFO L857 garLoopResultBuilder]: For program point L42(lines 42 46) no Hoare annotation was computed. [2021-10-24 10:29:26,564 INFO L857 garLoopResultBuilder]: For program point L42-1(lines 19 107) no Hoare annotation was computed. [2021-10-24 10:29:26,564 INFO L857 garLoopResultBuilder]: For program point L67-1(lines 67 76) no Hoare annotation was computed. [2021-10-24 10:29:26,564 INFO L857 garLoopResultBuilder]: For program point L67-3(lines 67 76) no Hoare annotation was computed. [2021-10-24 10:29:26,565 INFO L857 garLoopResultBuilder]: For program point L125(line 125) no Hoare annotation was computed. [2021-10-24 10:29:26,565 INFO L853 garLoopResultBuilder]: At program point L84-2(lines 84 87) the Hoare annotation is: false [2021-10-24 10:29:26,565 INFO L857 garLoopResultBuilder]: For program point L84-3(lines 19 107) no Hoare annotation was computed. [2021-10-24 10:29:26,565 INFO L857 garLoopResultBuilder]: For program point L43-2(lines 43 44) no Hoare annotation was computed. [2021-10-24 10:29:26,565 INFO L853 garLoopResultBuilder]: At program point L43-3(lines 43 44) the Hoare annotation is: false [2021-10-24 10:29:26,570 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:29:26,581 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 10:29:26,581 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-24 10:29:26,582 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-24 10:29:26,582 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 10:29:26,583 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-24 10:29:26,583 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-24 10:29:26,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:29:26 BoogieIcfgContainer [2021-10-24 10:29:26,584 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:29:26,585 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:29:26,585 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:29:26,585 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:29:26,585 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:28:45" (3/4) ... [2021-10-24 10:29:26,588 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 10:29:26,598 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-24 10:29:26,599 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-24 10:29:26,599 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 10:29:26,599 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 10:29:26,622 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~to_fp~LONGDOUBLE(currentRoundingMode, 1.0), ~Pluszero~LONGDOUBLE())) [2021-10-24 10:29:26,633 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:29:26,633 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:29:26,634 INFO L168 Benchmark]: Toolchain (without parser) took 44277.09 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 46.5 MB in the beginning and 46.0 MB in the end (delta: 515.6 kB). Peak memory consumption was 19.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:29:26,635 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 81.8 MB. Free memory was 63.0 MB in the beginning and 62.9 MB in the end (delta: 125.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:29:26,636 INFO L168 Benchmark]: CACSL2BoogieTranslator took 366.60 ms. Allocated memory is still 81.8 MB. Free memory was 46.3 MB in the beginning and 62.6 MB in the end (delta: -16.3 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:29:26,636 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.01 ms. Allocated memory is still 81.8 MB. Free memory was 62.6 MB in the beginning and 60.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:29:26,637 INFO L168 Benchmark]: Boogie Preprocessor took 37.00 ms. Allocated memory is still 81.8 MB. Free memory was 60.8 MB in the beginning and 58.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:29:26,637 INFO L168 Benchmark]: RCFGBuilder took 2648.85 ms. Allocated memory is still 81.8 MB. Free memory was 58.7 MB in the beginning and 43.1 MB in the end (delta: 15.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-24 10:29:26,638 INFO L168 Benchmark]: TraceAbstraction took 41119.36 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 42.5 MB in the beginning and 48.7 MB in the end (delta: -6.2 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2021-10-24 10:29:26,639 INFO L168 Benchmark]: Witness Printer took 48.38 ms. Allocated memory is still 98.6 MB. Free memory was 48.7 MB in the beginning and 46.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:29:26,642 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 81.8 MB. Free memory was 63.0 MB in the beginning and 62.9 MB in the end (delta: 125.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 366.60 ms. Allocated memory is still 81.8 MB. Free memory was 46.3 MB in the beginning and 62.6 MB in the end (delta: -16.3 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.01 ms. Allocated memory is still 81.8 MB. Free memory was 62.6 MB in the beginning and 60.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.00 ms. Allocated memory is still 81.8 MB. Free memory was 60.8 MB in the beginning and 58.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2648.85 ms. Allocated memory is still 81.8 MB. Free memory was 58.7 MB in the beginning and 43.1 MB in the end (delta: 15.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 41119.36 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 42.5 MB in the beginning and 48.7 MB in the end (delta: -6.2 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. * Witness Printer took 48.38 ms. Allocated memory is still 98.6 MB. Free memory was 48.7 MB in the beginning and 46.0 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms 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: 41047.0ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 10.2ms, AutomataDifference: 5643.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 2298.4ms, InitialAbstractionConstructionTime: 9.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 111 SDtfs, 11 SDslu, 255 SDs, 0 SdLazy, 35 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1105.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 9531.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 28.1ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 14 NumberOfFragments, 32 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 71.5ms HoareSimplificationTime, 10 FomulaSimplificationsInter, 31 FormulaSimplificationTreeSizeReductionInter, 2214.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 49.8ms SsaConstructionTime, 497.0ms SatisfiabilityAnalysisTime, 31556.4ms InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 64 ConstructedInterpolants, 14 QuantifiedInterpolants, 427 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 [2021-10-24 10:29:26,651 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 10:29:26,652 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-24 10:29:26,652 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-24 10:29:26,652 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 10:29:26,652 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-24 10:29:26,652 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, ~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! [2021-10-24 10:29:26,742 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_256dcdc3-2fc7-438a-885f-6e0a30888889/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...