./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0831.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_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0831.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw --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 ae08d3dbde40e32197902417be767e9b8a44048ec2abbe937f73d3dc278c75f1 ................................................................................................................................................................................................................................................................................................................................. 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_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0831.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw --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 ae08d3dbde40e32197902417be767e9b8a44048ec2abbe937f73d3dc278c75f1 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-20 05:32:49,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 05:32:49,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 05:32:49,415 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 05:32:49,415 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 05:32:49,417 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 05:32:49,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 05:32:49,421 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 05:32:49,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 05:32:49,425 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 05:32:49,426 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 05:32:49,428 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 05:32:49,429 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 05:32:49,430 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 05:32:49,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 05:32:49,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 05:32:49,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 05:32:49,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 05:32:49,438 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 05:32:49,440 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 05:32:49,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 05:32:49,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 05:32:49,448 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 05:32:49,449 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 05:32:49,453 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 05:32:49,454 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 05:32:49,454 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 05:32:49,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 05:32:49,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 05:32:49,457 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 05:32:49,458 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 05:32:49,459 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 05:32:49,460 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 05:32:49,461 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 05:32:49,462 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 05:32:49,463 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 05:32:49,464 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 05:32:49,464 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 05:32:49,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 05:32:49,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 05:32:49,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 05:32:49,467 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-20 05:32:49,492 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 05:32:49,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 05:32:49,494 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 05:32:49,494 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 05:32:49,494 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 05:32:49,494 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 05:32:49,495 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-20 05:32:49,495 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 05:32:49,495 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 05:32:49,495 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-20 05:32:49,496 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-20 05:32:49,496 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 05:32:49,496 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-20 05:32:49,496 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-20 05:32:49,497 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-20 05:32:49,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 05:32:49,498 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 05:32:49,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 05:32:49,498 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 05:32:49,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 05:32:49,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 05:32:49,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 05:32:49,499 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 05:32:49,499 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 05:32:49,500 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 05:32:49,500 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 05:32:49,500 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 05:32:49,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 05:32:49,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 05:32:49,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 05:32:49,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:32:49,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 05:32:49,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 05:32:49,502 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 05:32:49,502 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-20 05:32:49,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-20 05:32:49,503 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 05:32:49,503 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 05:32:49,503 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 05:32:49,503 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_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae08d3dbde40e32197902417be767e9b8a44048ec2abbe937f73d3dc278c75f1 [2021-10-20 05:32:49,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 05:32:49,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 05:32:49,777 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 05:32:49,778 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 05:32:49,779 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 05:32:49,780 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/float-newlib/float_req_bl_0831.c [2021-10-20 05:32:49,879 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/data/823e4e03a/34e9772663f3420aba76437eb52905e9/FLAG88bc9ddd5 [2021-10-20 05:32:50,336 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 05:32:50,337 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/sv-benchmarks/c/float-newlib/float_req_bl_0831.c [2021-10-20 05:32:50,344 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/data/823e4e03a/34e9772663f3420aba76437eb52905e9/FLAG88bc9ddd5 [2021-10-20 05:32:50,735 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/data/823e4e03a/34e9772663f3420aba76437eb52905e9 [2021-10-20 05:32:50,738 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 05:32:50,739 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 05:32:50,746 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 05:32:50,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 05:32:50,749 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 05:32:50,750 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:32:50" (1/1) ... [2021-10-20 05:32:50,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45b2c4a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:32:50, skipping insertion in model container [2021-10-20 05:32:50,752 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:32:50" (1/1) ... [2021-10-20 05:32:50,759 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 05:32:50,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:32:51,033 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_4832d952-85ca-47d5-accb-39f3d582a685/sv-benchmarks/c/float-newlib/float_req_bl_0831.c[3205,3218] [2021-10-20 05:32:51,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:32:51,047 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 05:32:51,087 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_4832d952-85ca-47d5-accb-39f3d582a685/sv-benchmarks/c/float-newlib/float_req_bl_0831.c[3205,3218] [2021-10-20 05:32:51,088 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:32:51,108 INFO L208 MainTranslator]: Completed translation [2021-10-20 05:32:51,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:32:51 WrapperNode [2021-10-20 05:32:51,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 05:32:51,110 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 05:32:51,110 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 05:32:51,110 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 05:32:51,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:32:51" (1/1) ... [2021-10-20 05:32:51,142 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:32:51" (1/1) ... [2021-10-20 05:32:51,175 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 05:32:51,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 05:32:51,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 05:32:51,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 05:32:51,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:32:51" (1/1) ... [2021-10-20 05:32:51,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:32:51" (1/1) ... [2021-10-20 05:32:51,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:32:51" (1/1) ... [2021-10-20 05:32:51,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:32:51" (1/1) ... [2021-10-20 05:32:51,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:32:51" (1/1) ... [2021-10-20 05:32:51,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:32:51" (1/1) ... [2021-10-20 05:32:51,229 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:32:51" (1/1) ... [2021-10-20 05:32:51,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 05:32:51,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 05:32:51,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 05:32:51,235 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 05:32:51,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:32:51" (1/1) ... [2021-10-20 05:32:51,253 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:32:51,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:32:51,275 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 05:32:51,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 05:32:51,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-20 05:32:51,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 05:32:51,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-20 05:32:51,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-20 05:32:51,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-20 05:32:51,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 05:32:51,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 05:32:51,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-20 05:32:51,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-10-20 05:32:51,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-20 05:32:51,846 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 05:32:51,846 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-20 05:32:51,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:32:51 BoogieIcfgContainer [2021-10-20 05:32:51,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 05:32:51,852 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 05:32:51,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 05:32:51,856 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 05:32:51,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:32:50" (1/3) ... [2021-10-20 05:32:51,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13896de8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:32:51, skipping insertion in model container [2021-10-20 05:32:51,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:32:51" (2/3) ... [2021-10-20 05:32:51,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13896de8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:32:51, skipping insertion in model container [2021-10-20 05:32:51,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:32:51" (3/3) ... [2021-10-20 05:32:51,860 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0831.c [2021-10-20 05:32:51,866 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 05:32:51,866 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-20 05:32:51,932 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 05:32:51,939 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 [2021-10-20 05:32:51,940 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-20 05:32:51,957 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 28 states have (on average 1.75) internal successors, (49), 29 states have internal predecessors, (49), 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) [2021-10-20 05:32:51,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-20 05:32:51,962 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:32:51,963 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:32:51,964 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:32:51,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:32:51,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1825979879, now seen corresponding path program 1 times [2021-10-20 05:32:51,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:32:51,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498000136] [2021-10-20 05:32:51,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:32:51,997 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:32:52,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:32:52,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:32:52,251 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:32:52,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498000136] [2021-10-20 05:32:52,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498000136] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:32:52,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:32:52,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-20 05:32:52,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398803729] [2021-10-20 05:32:52,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-20 05:32:52,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:32:52,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-20 05:32:52,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-20 05:32:52,296 INFO L87 Difference]: Start difference. First operand has 30 states, 28 states have (on average 1.75) internal successors, (49), 29 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:32:52,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:32:52,322 INFO L93 Difference]: Finished difference Result 59 states and 97 transitions. [2021-10-20 05:32:52,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-20 05:32:52,324 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-20 05:32:52,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:32:52,337 INFO L225 Difference]: With dead ends: 59 [2021-10-20 05:32:52,338 INFO L226 Difference]: Without dead ends: 28 [2021-10-20 05:32:52,342 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 [2021-10-20 05:32:52,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-20 05:32:52,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-20 05:32:52,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 27 states have internal predecessors, (36), 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) [2021-10-20 05:32:52,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2021-10-20 05:32:52,389 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 7 [2021-10-20 05:32:52,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:32:52,390 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2021-10-20 05:32:52,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:32:52,391 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2021-10-20 05:32:52,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-20 05:32:52,392 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:32:52,392 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:32:52,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-20 05:32:52,394 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:32:52,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:32:52,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1296270310, now seen corresponding path program 1 times [2021-10-20 05:32:52,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:32:52,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367972392] [2021-10-20 05:32:52,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:32:52,401 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:32:52,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 05:32:52,533 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-20 05:32:52,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 05:32:52,682 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-20 05:32:52,689 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-20 05:32:52,691 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 05:32:52,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-20 05:32:52,702 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 05:32:52,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:32:52 BoogieIcfgContainer [2021-10-20 05:32:52,764 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 05:32:52,765 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 05:32:52,765 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 05:32:52,765 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 05:32:52,766 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:32:51" (3/4) ... [2021-10-20 05:32:52,776 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-20 05:32:52,777 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 05:32:52,779 INFO L168 Benchmark]: Toolchain (without parser) took 2038.87 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 52.2 MB in the beginning and 62.5 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.1 GB. [2021-10-20 05:32:52,781 INFO L168 Benchmark]: CDTParser took 1.00 ms. Allocated memory is still 88.1 MB. Free memory was 58.4 MB in the beginning and 58.4 MB in the end (delta: 27.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:32:52,782 INFO L168 Benchmark]: CACSL2BoogieTranslator took 363.13 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 52.0 MB in the beginning and 80.0 MB in the end (delta: -28.1 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2021-10-20 05:32:52,783 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.30 ms. Allocated memory is still 107.0 MB. Free memory was 80.0 MB in the beginning and 77.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:32:52,785 INFO L168 Benchmark]: Boogie Preprocessor took 57.49 ms. Allocated memory is still 107.0 MB. Free memory was 77.9 MB in the beginning and 76.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:32:52,786 INFO L168 Benchmark]: RCFGBuilder took 615.60 ms. Allocated memory is still 107.0 MB. Free memory was 76.2 MB in the beginning and 57.9 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-20 05:32:52,788 INFO L168 Benchmark]: TraceAbstraction took 912.30 ms. Allocated memory is still 107.0 MB. Free memory was 57.6 MB in the beginning and 63.0 MB in the end (delta: -5.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:32:52,789 INFO L168 Benchmark]: Witness Printer took 12.13 ms. Allocated memory is still 107.0 MB. Free memory was 63.0 MB in the beginning and 62.5 MB in the end (delta: 491.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:32:52,798 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.00 ms. Allocated memory is still 88.1 MB. Free memory was 58.4 MB in the beginning and 58.4 MB in the end (delta: 27.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 363.13 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 52.0 MB in the beginning and 80.0 MB in the end (delta: -28.1 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.30 ms. Allocated memory is still 107.0 MB. Free memory was 80.0 MB in the beginning and 77.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.49 ms. Allocated memory is still 107.0 MB. Free memory was 77.9 MB in the beginning and 76.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 615.60 ms. Allocated memory is still 107.0 MB. Free memory was 76.2 MB in the beginning and 57.9 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 912.30 ms. Allocated memory is still 107.0 MB. Free memory was 57.6 MB in the beginning and 63.0 MB in the end (delta: -5.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 12.13 ms. Allocated memory is still 107.0 MB. Free memory was 63.0 MB in the beginning and 62.5 MB in the end (delta: 491.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms 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: 123]: 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 15, overapproximation of someUnaryDOUBLEoperation at line 21, overapproximation of bitwiseAnd at line 48, overapproximation of someBinaryArithmeticFLOAToperation at line 52. Possible FailurePath: [L17-L36] static const float one_exp = 1.0, halF_exp[2] = { 0.5, -0.5, }, huge_exp = 1.0e+30, twom100_exp = 7.8886090522e-31, ln2HI_exp[2] = { 6.9313812256e-01, -6.9313812256e-01, }, ln2LO_exp[2] = { 9.0580006145e-06, -9.0580006145e-06, }, invln2_exp = 1.4426950216e+00, P1_exp = 1.6666667163e-01, P2_exp = -2.7777778450e-03, P3_exp = 6.6137559770e-05, P4_exp = -1.6533901999e-06, P5_exp = 4.1381369442e-08; [L118] float x = 0.0f / 0.0f; [L39] float y, hi, lo, c, t; [L40] __int32_t k = 0, xsb, sx; [L41] __uint32_t hx; VAL [halF_exp={11:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={5:0}, ln2LO_exp={7:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L44] ieee_float_shape_type gf_u; [L45] gf_u.value = (x) [L46] EXPR gf_u.word [L46] (sx) = gf_u.word [L48] xsb = (sx >> 31) & 1 [L49] hx = sx & 0x7fffffff VAL [halF_exp={11:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={5:0}, ln2LO_exp={7:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L51] COND TRUE ((hx) > 0x7f800000L) [L52] return x + x; VAL [halF_exp={11:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={5:0}, ln2LO_exp={7:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L119] float res = __ieee754_expf(x); [L15] return x != x; [L122] COND TRUE !isnan_float(res) [L123] reach_error() VAL [halF_exp={11:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={5:0}, ln2LO_exp={7:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 781.4ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 10.4ms, AutomataDifference: 77.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 38 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=30occurred 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: 29.0ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 18.3ms SsaConstructionTime, 172.0ms SatisfiabilityAnalysisTime, 115.4ms InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-20 05:32:52,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/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 [2021-10-20 05:32:55,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 05:32:55,625 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 05:32:55,704 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 05:32:55,705 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 05:32:55,711 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 05:32:55,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 05:32:55,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 05:32:55,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 05:32:55,737 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 05:32:55,739 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 05:32:55,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 05:32:55,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 05:32:55,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 05:32:55,748 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 05:32:55,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 05:32:55,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 05:32:55,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 05:32:55,760 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 05:32:55,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 05:32:55,772 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 05:32:55,774 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 05:32:55,777 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 05:32:55,780 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 05:32:55,791 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 05:32:55,792 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 05:32:55,792 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 05:32:55,795 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 05:32:55,796 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 05:32:55,797 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 05:32:55,798 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 05:32:55,799 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 05:32:55,801 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 05:32:55,803 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 05:32:55,805 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 05:32:55,805 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 05:32:55,807 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 05:32:55,807 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 05:32:55,807 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 05:32:55,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 05:32:55,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 05:32:55,812 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-20 05:32:55,866 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 05:32:55,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 05:32:55,868 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 05:32:55,869 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 05:32:55,869 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 05:32:55,869 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 05:32:55,869 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 05:32:55,870 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 05:32:55,870 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 05:32:55,872 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 05:32:55,874 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 05:32:55,874 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 05:32:55,874 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 05:32:55,875 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 05:32:55,875 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 05:32:55,875 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 05:32:55,875 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 05:32:55,876 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-20 05:32:55,876 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-20 05:32:55,876 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 05:32:55,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 05:32:55,877 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 05:32:55,877 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 05:32:55,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 05:32:55,878 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-20 05:32:55,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 05:32:55,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:32:55,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 05:32:55,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 05:32:55,879 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 05:32:55,879 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-20 05:32:55,880 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-20 05:32:55,880 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 05:32:55,880 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 05:32:55,881 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 05:32:55,881 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_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae08d3dbde40e32197902417be767e9b8a44048ec2abbe937f73d3dc278c75f1 [2021-10-20 05:32:56,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 05:32:56,389 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 05:32:56,393 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 05:32:56,394 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 05:32:56,397 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 05:32:56,400 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/float-newlib/float_req_bl_0831.c [2021-10-20 05:32:56,480 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/data/2e67c1f1b/a6dc10bddd7f4396a0258178635787b8/FLAGec9033d7d [2021-10-20 05:32:57,072 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 05:32:57,072 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/sv-benchmarks/c/float-newlib/float_req_bl_0831.c [2021-10-20 05:32:57,084 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/data/2e67c1f1b/a6dc10bddd7f4396a0258178635787b8/FLAGec9033d7d [2021-10-20 05:32:57,397 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/data/2e67c1f1b/a6dc10bddd7f4396a0258178635787b8 [2021-10-20 05:32:57,400 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 05:32:57,402 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 05:32:57,404 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 05:32:57,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 05:32:57,418 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 05:32:57,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:32:57" (1/1) ... [2021-10-20 05:32:57,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e4810c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:32:57, skipping insertion in model container [2021-10-20 05:32:57,421 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:32:57" (1/1) ... [2021-10-20 05:32:57,438 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 05:32:57,489 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:32:57,713 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_4832d952-85ca-47d5-accb-39f3d582a685/sv-benchmarks/c/float-newlib/float_req_bl_0831.c[3205,3218] [2021-10-20 05:32:57,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:32:57,743 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 05:32:57,877 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_4832d952-85ca-47d5-accb-39f3d582a685/sv-benchmarks/c/float-newlib/float_req_bl_0831.c[3205,3218] [2021-10-20 05:32:57,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:32:57,903 INFO L208 MainTranslator]: Completed translation [2021-10-20 05:32:57,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:32:57 WrapperNode [2021-10-20 05:32:57,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 05:32:57,905 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 05:32:57,906 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 05:32:57,906 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 05:32:57,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:32:57" (1/1) ... [2021-10-20 05:32:57,932 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:32:57" (1/1) ... [2021-10-20 05:32:57,967 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 05:32:57,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 05:32:57,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 05:32:57,968 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 05:32:57,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:32:57" (1/1) ... [2021-10-20 05:32:57,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:32:57" (1/1) ... [2021-10-20 05:32:57,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:32:57" (1/1) ... [2021-10-20 05:32:57,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:32:57" (1/1) ... [2021-10-20 05:32:58,009 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:32:57" (1/1) ... [2021-10-20 05:32:58,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:32:57" (1/1) ... [2021-10-20 05:32:58,035 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:32:57" (1/1) ... [2021-10-20 05:32:58,040 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 05:32:58,041 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 05:32:58,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 05:32:58,042 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 05:32:58,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:32:57" (1/1) ... [2021-10-20 05:32:58,066 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:32:58,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:32:58,101 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 05:32:58,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 05:32:58,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2021-10-20 05:32:58,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-20 05:32:58,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 05:32:58,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-10-20 05:32:58,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-20 05:32:58,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 05:32:58,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 05:32:58,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-20 05:32:58,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-20 05:32:58,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-20 05:33:07,821 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 05:33:07,822 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-20 05:33:07,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:33:07 BoogieIcfgContainer [2021-10-20 05:33:07,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 05:33:07,827 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 05:33:07,827 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 05:33:07,831 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 05:33:07,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:32:57" (1/3) ... [2021-10-20 05:33:07,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e8ac27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:33:07, skipping insertion in model container [2021-10-20 05:33:07,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:32:57" (2/3) ... [2021-10-20 05:33:07,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e8ac27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:33:07, skipping insertion in model container [2021-10-20 05:33:07,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:33:07" (3/3) ... [2021-10-20 05:33:07,835 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0831.c [2021-10-20 05:33:07,841 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 05:33:07,842 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-20 05:33:07,900 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 05:33:07,908 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 [2021-10-20 05:33:07,908 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-20 05:33:07,926 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 36 states have internal predecessors, (58), 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) [2021-10-20 05:33:07,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-20 05:33:07,933 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:33:07,934 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:33:07,935 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:33:07,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:33:07,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1903272656, now seen corresponding path program 1 times [2021-10-20 05:33:07,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:33:07,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1281744562] [2021-10-20 05:33:07,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:33:07,961 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:33:07,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:33:07,965 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:33:07,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-20 05:33:08,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:33:08,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-20 05:33:08,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:33:08,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:33:08,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:33:08,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:33:08,807 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:33:08,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1281744562] [2021-10-20 05:33:08,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1281744562] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:33:08,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:33:08,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-20 05:33:08,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044259048] [2021-10-20 05:33:08,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-20 05:33:08,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:33:08,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-20 05:33:08,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-20 05:33:08,847 INFO L87 Difference]: Start difference. First operand has 37 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 36 states have internal predecessors, (58), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-10-20 05:33:08,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:33:08,867 INFO L93 Difference]: Finished difference Result 72 states and 114 transitions. [2021-10-20 05:33:08,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-20 05:33:08,869 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-10-20 05:33:08,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:33:08,881 INFO L225 Difference]: With dead ends: 72 [2021-10-20 05:33:08,881 INFO L226 Difference]: Without dead ends: 34 [2021-10-20 05:33:08,885 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-20 05:33:08,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-20 05:33:08,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-20 05:33:08,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 33 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) [2021-10-20 05:33:08,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2021-10-20 05:33:08,928 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 9 [2021-10-20 05:33:08,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:33:08,928 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2021-10-20 05:33:08,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-10-20 05:33:08,929 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2021-10-20 05:33:08,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-20 05:33:08,930 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:33:08,930 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:33:08,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-20 05:33:09,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:33:09,155 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:33:09,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:33:09,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1485078157, now seen corresponding path program 1 times [2021-10-20 05:33:09,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:33:09,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [397401732] [2021-10-20 05:33:09,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:33:09,158 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:33:09,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:33:09,164 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:33:09,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-20 05:33:09,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:33:09,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-20 05:33:09,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:33:10,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:33:10,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:33:11,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:33:11,672 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:33:11,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [397401732] [2021-10-20 05:33:11,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [397401732] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:33:11,672 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:33:11,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-20 05:33:11,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873535860] [2021-10-20 05:33:11,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-20 05:33:11,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:33:11,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-20 05:33:11,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-20 05:33:11,677 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 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) [2021-10-20 05:33:25,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:33:25,009 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2021-10-20 05:33:25,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-20 05:33:25,010 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 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 [2021-10-20 05:33:25,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:33:25,012 INFO L225 Difference]: With dead ends: 50 [2021-10-20 05:33:25,012 INFO L226 Difference]: Without dead ends: 42 [2021-10-20 05:33:25,014 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1369.9ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-10-20 05:33:25,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-20 05:33:25,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 34. [2021-10-20 05:33:25,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 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) [2021-10-20 05:33:25,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2021-10-20 05:33:25,022 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 10 [2021-10-20 05:33:25,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:33:25,022 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2021-10-20 05:33:25,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 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) [2021-10-20 05:33:25,023 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2021-10-20 05:33:25,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-20 05:33:25,024 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:33:25,024 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:33:25,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-20 05:33:25,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:33:25,230 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:33:25,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:33:25,231 INFO L82 PathProgramCache]: Analyzing trace with hash 228797714, now seen corresponding path program 1 times [2021-10-20 05:33:25,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:33:25,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127593804] [2021-10-20 05:33:25,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:33:25,233 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:33:25,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:33:25,234 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:33:25,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-20 05:33:25,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:33:25,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-20 05:33:25,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:33:26,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:33:26,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:33:27,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:33:27,002 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:33:27,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127593804] [2021-10-20 05:33:27,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127593804] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:33:27,003 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:33:27,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 7] imperfect sequences [] total 10 [2021-10-20 05:33:27,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63441273] [2021-10-20 05:33:27,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-20 05:33:27,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:33:27,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-20 05:33:27,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-20 05:33:27,007 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 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) [2021-10-20 05:33:27,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:33:27,290 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2021-10-20 05:33:27,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-20 05:33:27,291 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 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 [2021-10-20 05:33:27,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:33:27,291 INFO L225 Difference]: With dead ends: 34 [2021-10-20 05:33:27,291 INFO L226 Difference]: Without dead ends: 0 [2021-10-20 05:33:27,292 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 774.1ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-20 05:33:27,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-20 05:33:27,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-20 05:33:27,293 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) [2021-10-20 05:33:27,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-20 05:33:27,295 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-10-20 05:33:27,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:33:27,296 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-20 05:33:27,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 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) [2021-10-20 05:33:27,297 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-20 05:33:27,297 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-20 05:33:27,304 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 05:33:27,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-20 05:33:27,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:33:27,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-20 05:33:27,527 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:33:27,573 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:33:27,574 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:33:27,575 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:33:27,578 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:33:27,588 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:33:27,784 INFO L857 garLoopResultBuilder]: For program point L60(lines 60 75) no Hoare annotation was computed. [2021-10-20 05:33:27,784 INFO L860 garLoopResultBuilder]: At program point L127(lines 113 128) the Hoare annotation is: true [2021-10-20 05:33:27,784 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-20 05:33:27,785 INFO L857 garLoopResultBuilder]: For program point L61(lines 61 70) no Hoare annotation was computed. [2021-10-20 05:33:27,785 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-20 05:33:27,785 INFO L857 garLoopResultBuilder]: For program point L61-2(lines 61 70) no Hoare annotation was computed. [2021-10-20 05:33:27,785 INFO L857 garLoopResultBuilder]: For program point L53(lines 53 54) no Hoare annotation was computed. [2021-10-20 05:33:27,786 INFO L857 garLoopResultBuilder]: For program point L86-1(lines 86 90) no Hoare annotation was computed. [2021-10-20 05:33:27,786 INFO L853 garLoopResultBuilder]: At program point L86-2(lines 86 90) the Hoare annotation is: false [2021-10-20 05:33:27,786 INFO L857 garLoopResultBuilder]: For program point L54(line 54) no Hoare annotation was computed. [2021-10-20 05:33:27,786 INFO L857 garLoopResultBuilder]: For program point L54-2(line 54) no Hoare annotation was computed. [2021-10-20 05:33:27,786 INFO L857 garLoopResultBuilder]: For program point L104(lines 104 108) no Hoare annotation was computed. [2021-10-20 05:33:27,787 INFO L857 garLoopResultBuilder]: For program point L104-1(lines 97 110) no Hoare annotation was computed. [2021-10-20 05:33:27,787 INFO L857 garLoopResultBuilder]: For program point L104-2(lines 104 108) no Hoare annotation was computed. [2021-10-20 05:33:27,787 INFO L857 garLoopResultBuilder]: For program point L55(lines 55 56) no Hoare annotation was computed. [2021-10-20 05:33:27,787 INFO L857 garLoopResultBuilder]: For program point L80(lines 80 83) no Hoare annotation was computed. [2021-10-20 05:33:27,788 INFO L857 garLoopResultBuilder]: For program point L72(lines 72 75) no Hoare annotation was computed. [2021-10-20 05:33:27,788 INFO L857 garLoopResultBuilder]: For program point L72-2(lines 60 75) no Hoare annotation was computed. [2021-10-20 05:33:27,788 INFO L857 garLoopResultBuilder]: For program point L122(lines 122 125) no Hoare annotation was computed. [2021-10-20 05:33:27,788 INFO L853 garLoopResultBuilder]: At program point L15(line 15) the Hoare annotation is: (and (= |ULTIMATE.start___ieee754_expf_#res| (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (fp.add roundNearestTiesToEven .cse0 .cse0))) (= ULTIMATE.start___ieee754_expf_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))) (= currentRoundingMode roundNearestTiesToEven) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) [2021-10-20 05:33:27,789 INFO L857 garLoopResultBuilder]: For program point L73(lines 73 74) no Hoare annotation was computed. [2021-10-20 05:33:27,789 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-20 05:33:27,789 INFO L857 garLoopResultBuilder]: For program point L123(line 123) no Hoare annotation was computed. [2021-10-20 05:33:27,789 INFO L857 garLoopResultBuilder]: For program point L57(lines 57 58) no Hoare annotation was computed. [2021-10-20 05:33:27,790 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 123) no Hoare annotation was computed. [2021-10-20 05:33:27,790 INFO L857 garLoopResultBuilder]: For program point L99-1(lines 99 103) no Hoare annotation was computed. [2021-10-20 05:33:27,790 INFO L853 garLoopResultBuilder]: At program point L99-2(lines 99 103) the Hoare annotation is: false [2021-10-20 05:33:27,790 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-20 05:33:27,790 INFO L857 garLoopResultBuilder]: For program point L91(lines 91 95) no Hoare annotation was computed. [2021-10-20 05:33:27,791 INFO L857 garLoopResultBuilder]: For program point L91-1(lines 84 97) no Hoare annotation was computed. [2021-10-20 05:33:27,791 INFO L857 garLoopResultBuilder]: For program point L91-2(lines 91 95) no Hoare annotation was computed. [2021-10-20 05:33:27,791 INFO L857 garLoopResultBuilder]: For program point L84(lines 84 110) no Hoare annotation was computed. [2021-10-20 05:33:27,791 INFO L857 garLoopResultBuilder]: For program point L51(lines 51 52) no Hoare annotation was computed. [2021-10-20 05:33:27,792 INFO L853 garLoopResultBuilder]: At program point L109(lines 38 111) the Hoare annotation is: (and (= |ULTIMATE.start___ieee754_expf_#res| (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (fp.add roundNearestTiesToEven .cse0 .cse0))) (= ULTIMATE.start___ieee754_expf_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))) (= currentRoundingMode roundNearestTiesToEven)) [2021-10-20 05:33:27,792 INFO L857 garLoopResultBuilder]: For program point L43-1(lines 43 47) no Hoare annotation was computed. [2021-10-20 05:33:27,792 INFO L853 garLoopResultBuilder]: At program point L43-2(lines 43 47) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start___ieee754_expf_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (= currentRoundingMode roundNearestTiesToEven)) [2021-10-20 05:33:27,792 INFO L857 garLoopResultBuilder]: For program point L43-3(lines 43 47) no Hoare annotation was computed. [2021-10-20 05:33:27,798 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 05:33:27,811 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:33:27,812 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:33:27,813 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:33:27,813 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:33:27,821 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:33:27,821 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:33:27,821 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:33:27,822 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:33:27,823 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-20 05:33:27,824 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:33:27,824 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-20 05:33:27,825 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:33:27,825 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:33:27,825 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:33:27,826 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:33:27,826 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:33:27,827 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:33:27,827 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:33:27,827 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:33:27,830 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:33:27,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:33:27 BoogieIcfgContainer [2021-10-20 05:33:27,836 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 05:33:27,838 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 05:33:27,839 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 05:33:27,839 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 05:33:27,840 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:33:07" (3/4) ... [2021-10-20 05:33:27,844 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-20 05:33:27,864 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-20 05:33:27,865 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-20 05:33:27,866 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-20 05:33:27,875 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-20 05:33:27,920 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven [2021-10-20 05:33:27,920 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\result == ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven [2021-10-20 05:33:27,921 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\result == ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && 1bv32 == \result [2021-10-20 05:33:27,996 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/witness.graphml [2021-10-20 05:33:27,997 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 05:33:27,999 INFO L168 Benchmark]: Toolchain (without parser) took 30595.52 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 46.3 MB in the beginning and 59.6 MB in the end (delta: -13.3 MB). Peak memory consumption was 30.0 MB. Max. memory is 16.1 GB. [2021-10-20 05:33:27,999 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 67.1 MB. Free memory is still 48.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:33:28,000 INFO L168 Benchmark]: CACSL2BoogieTranslator took 500.42 ms. Allocated memory is still 67.1 MB. Free memory was 46.1 MB in the beginning and 47.9 MB in the end (delta: -1.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-20 05:33:28,001 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.80 ms. Allocated memory is still 67.1 MB. Free memory was 47.9 MB in the beginning and 45.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:33:28,001 INFO L168 Benchmark]: Boogie Preprocessor took 72.57 ms. Allocated memory is still 67.1 MB. Free memory was 45.9 MB in the beginning and 43.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:33:28,002 INFO L168 Benchmark]: RCFGBuilder took 9783.43 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 43.7 MB in the beginning and 60.0 MB in the end (delta: -16.2 MB). Peak memory consumption was 19.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:33:28,002 INFO L168 Benchmark]: TraceAbstraction took 20009.48 ms. Allocated memory is still 81.8 MB. Free memory was 59.6 MB in the beginning and 36.4 MB in the end (delta: 23.2 MB). Peak memory consumption was 24.3 MB. Max. memory is 16.1 GB. [2021-10-20 05:33:28,003 INFO L168 Benchmark]: Witness Printer took 158.52 ms. Allocated memory is still 81.8 MB. Free memory was 36.4 MB in the beginning and 59.6 MB in the end (delta: -23.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-20 05:33:28,005 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 67.1 MB. Free memory is still 48.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 500.42 ms. Allocated memory is still 67.1 MB. Free memory was 46.1 MB in the beginning and 47.9 MB in the end (delta: -1.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 61.80 ms. Allocated memory is still 67.1 MB. Free memory was 47.9 MB in the beginning and 45.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 72.57 ms. Allocated memory is still 67.1 MB. Free memory was 45.9 MB in the beginning and 43.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 9783.43 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 43.7 MB in the beginning and 60.0 MB in the end (delta: -16.2 MB). Peak memory consumption was 19.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 20009.48 ms. Allocated memory is still 81.8 MB. Free memory was 59.6 MB in the beginning and 36.4 MB in the end (delta: 23.2 MB). Peak memory consumption was 24.3 MB. Max. memory is 16.1 GB. * Witness Printer took 158.52 ms. Allocated memory is still 81.8 MB. Free memory was 36.4 MB in the beginning and 59.6 MB in the end (delta: -23.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - 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 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 Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * 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: 123]: 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, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 19900.5ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 13.5ms, AutomataDifference: 13691.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 265.2ms, InitialAbstractionConstructionTime: 13.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 79 SDtfs, 61 SDslu, 121 SDs, 0 SdLazy, 65 SolverSat, 2 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 12694.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2144.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 33.2ms AutomataMinimizationTime, 3 MinimizatonAttempts, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 10 NumberOfFragments, 61 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 65.9ms HoareSimplificationTime, 6 FomulaSimplificationsInter, 6 FormulaSimplificationTreeSizeReductionInter, 190.7ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 80.1ms SsaConstructionTime, 1544.7ms SatisfiabilityAnalysisTime, 3322.2ms InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 56 ConstructedInterpolants, 5 QuantifiedInterpolants, 303 SizeOfPredicates, 15 NumberOfNonLiveVariables, 231 ConjunctsInSsa, 22 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: 38]: Loop Invariant [2021-10-20 05:33:28,017 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:33:28,017 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:33:28,018 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:33:28,018 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:33:28,019 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:33:28,019 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:33:28,019 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:33:28,019 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (\result == ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 99]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 113]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 43]: Loop Invariant [2021-10-20 05:33:28,020 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-20 05:33:28,021 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:33:28,021 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-20 05:33:28,021 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 15]: Loop Invariant [2021-10-20 05:33:28,022 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:33:28,022 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:33:28,023 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:33:28,023 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:33:28,023 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:33:28,024 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:33:28,024 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:33:28,024 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((\result == ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && 1bv32 == \result - InvariantResult [Line: 86]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2021-10-20 05:33:28,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4832d952-85ca-47d5-accb-39f3d582a685/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...