./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f30ea14-e863-4549-a4fa-5b2add4d8666/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f30ea14-e863-4549-a4fa-5b2add4d8666/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f30ea14-e863-4549-a4fa-5b2add4d8666/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f30ea14-e863-4549-a4fa-5b2add4d8666/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f30ea14-e863-4549-a4fa-5b2add4d8666/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f30ea14-e863-4549-a4fa-5b2add4d8666/bin/utaipan-WLngWcDbfI --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 5fb4ea5d2ba4e3ce5c37a1ed90f4b993cc1661a1 ....................................................................................................................................................................................................................................................................................................... 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_2f30ea14-e863-4549-a4fa-5b2add4d8666/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f30ea14-e863-4549-a4fa-5b2add4d8666/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f30ea14-e863-4549-a4fa-5b2add4d8666/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f30ea14-e863-4549-a4fa-5b2add4d8666/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f30ea14-e863-4549-a4fa-5b2add4d8666/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f30ea14-e863-4549-a4fa-5b2add4d8666/bin/utaipan-WLngWcDbfI --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 5fb4ea5d2ba4e3ce5c37a1ed90f4b993cc1661a1 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:24:31,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:24:31,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:24:31,307 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:24:31,309 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:24:31,314 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:24:31,317 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:24:31,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:24:31,324 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:24:31,330 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:24:31,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:24:31,333 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:24:31,333 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:24:31,336 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:24:31,338 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:24:31,340 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:24:31,342 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:24:31,347 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:24:31,350 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:24:31,361 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:24:31,363 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:24:31,365 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:24:31,368 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:24:31,370 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:24:31,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:24:31,379 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:24:31,380 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:24:31,382 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:24:31,383 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:24:31,384 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:24:31,385 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:24:31,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:24:31,388 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:24:31,389 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:24:31,391 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:24:31,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:24:31,392 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:24:31,393 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:24:31,393 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:24:31,394 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:24:31,395 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:24:31,396 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f30ea14-e863-4549-a4fa-5b2add4d8666/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:24:31,442 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:24:31,446 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:24:31,447 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:24:31,447 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:24:31,448 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:24:31,448 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:24:31,448 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:24:31,448 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:24:31,449 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:24:31,449 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:24:31,450 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:24:31,450 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:24:31,450 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:24:31,451 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:24:31,451 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:24:31,452 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:24:31,452 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:24:31,452 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:24:31,452 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:24:31,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:24:31,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:24:31,453 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:24:31,453 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:24:31,454 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:24:31,454 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:24:31,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:24:31,454 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:24:31,455 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:24:31,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:24:31,456 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:24:31,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:24:31,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:24:31,457 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:24:31,458 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:24:31,458 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:24:31,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:24:31,458 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:24:31,459 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:24:31,459 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:24:31,459 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_2f30ea14-e863-4549-a4fa-5b2add4d8666/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f30ea14-e863-4549-a4fa-5b2add4d8666/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fb4ea5d2ba4e3ce5c37a1ed90f4b993cc1661a1 [2021-10-11 02:24:31,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:24:31,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:24:31,754 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:24:31,755 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:24:31,756 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:24:31,757 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f30ea14-e863-4549-a4fa-5b2add4d8666/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c [2021-10-11 02:24:31,831 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f30ea14-e863-4549-a4fa-5b2add4d8666/bin/utaipan-WLngWcDbfI/data/f6d0e5661/4929d225d64540e3aea48b77f78da0b7/FLAG229c3358a [2021-10-11 02:24:32,286 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:24:32,287 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f30ea14-e863-4549-a4fa-5b2add4d8666/sv-benchmarks/c/float-newlib/float_req_bl_1252b.c [2021-10-11 02:24:32,295 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f30ea14-e863-4549-a4fa-5b2add4d8666/bin/utaipan-WLngWcDbfI/data/f6d0e5661/4929d225d64540e3aea48b77f78da0b7/FLAG229c3358a [2021-10-11 02:24:32,661 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f30ea14-e863-4549-a4fa-5b2add4d8666/bin/utaipan-WLngWcDbfI/data/f6d0e5661/4929d225d64540e3aea48b77f78da0b7 [2021-10-11 02:24:32,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:24:32,664 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:24:32,672 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:24:32,672 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:24:32,676 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:24:32,677 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:32" (1/1) ... [2021-10-11 02:24:32,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@526fdc3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:32, skipping insertion in model container [2021-10-11 02:24:32,679 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:32" (1/1) ... [2021-10-11 02:24:32,687 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:24:32,712 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:24:32,887 WARN L226 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_2f30ea14-e863-4549-a4fa-5b2add4d8666/sv-benchmarks/c/float-newlib/float_req_bl_1252b.c[1936,1949] [2021-10-11 02:24:32,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:24:32,900 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:24:32,938 WARN L226 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_2f30ea14-e863-4549-a4fa-5b2add4d8666/sv-benchmarks/c/float-newlib/float_req_bl_1252b.c[1936,1949] [2021-10-11 02:24:32,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:24:32,954 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:24:32,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:32 WrapperNode [2021-10-11 02:24:32,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:24:32,956 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:24:32,956 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:24:32,956 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:24:32,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:32" (1/1) ... [2021-10-11 02:24:32,972 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:32" (1/1) ... [2021-10-11 02:24:32,999 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:24:33,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:24:33,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:24:33,005 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:24:33,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:32" (1/1) ... [2021-10-11 02:24:33,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:32" (1/1) ... [2021-10-11 02:24:33,024 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:32" (1/1) ... [2021-10-11 02:24:33,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:32" (1/1) ... [2021-10-11 02:24:33,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:32" (1/1) ... [2021-10-11 02:24:33,057 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:32" (1/1) ... [2021-10-11 02:24:33,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:32" (1/1) ... [2021-10-11 02:24:33,069 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:24:33,074 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:24:33,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:24:33,075 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:24:33,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:32" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f30ea14-e863-4549-a4fa-5b2add4d8666/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:24:33,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:24:33,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:24:33,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-11 02:24:33,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:24:33,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:24:33,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:24:33,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:24:33,952 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:24:33,954 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-11 02:24:33,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:33 BoogieIcfgContainer [2021-10-11 02:24:33,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:24:33,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:24:33,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:24:33,963 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:24:33,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:24:32" (1/3) ... [2021-10-11 02:24:33,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78183a21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:33, skipping insertion in model container [2021-10-11 02:24:33,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:32" (2/3) ... [2021-10-11 02:24:33,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78183a21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:33, skipping insertion in model container [2021-10-11 02:24:33,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:33" (3/3) ... [2021-10-11 02:24:33,968 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b.c [2021-10-11 02:24:33,986 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:24:33,989 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:24:33,999 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:24:34,023 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:24:34,024 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:24:34,024 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:24:34,024 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:24:34,024 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:24:34,024 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:24:34,024 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:24:34,025 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:24:34,037 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2021-10-11 02:24:34,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:24:34,042 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:34,043 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:34,044 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:34,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:34,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1433219361, now seen corresponding path program 1 times [2021-10-11 02:24:34,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:34,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727940194] [2021-10-11 02:24:34,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:34,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:34,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:34,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727940194] [2021-10-11 02:24:34,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:34,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:24:34,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903947760] [2021-10-11 02:24:34,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:24:34,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:34,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:24:34,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:24:34,216 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2021-10-11 02:24:34,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:34,231 INFO L93 Difference]: Finished difference Result 35 states and 51 transitions. [2021-10-11 02:24:34,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:24:34,232 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2021-10-11 02:24:34,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:34,240 INFO L225 Difference]: With dead ends: 35 [2021-10-11 02:24:34,240 INFO L226 Difference]: Without dead ends: 16 [2021-10-11 02:24:34,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:24:34,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-11 02:24:34,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-11 02:24:34,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-11 02:24:34,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-10-11 02:24:34,275 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 8 [2021-10-11 02:24:34,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:34,275 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-10-11 02:24:34,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:24:34,275 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-10-11 02:24:34,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:24:34,287 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:34,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:34,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:24:34,293 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:34,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:34,294 INFO L82 PathProgramCache]: Analyzing trace with hash -2131701560, now seen corresponding path program 1 times [2021-10-11 02:24:34,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:34,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284751079] [2021-10-11 02:24:34,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:34,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:24:34,353 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:24:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:24:34,387 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:24:34,409 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:24:34,409 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:24:34,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:24:34,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:24:34 BoogieIcfgContainer [2021-10-11 02:24:34,435 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:24:34,436 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:24:34,436 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:24:34,436 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:24:34,437 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:33" (3/4) ... [2021-10-11 02:24:34,440 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 02:24:34,440 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:24:34,442 INFO L168 Benchmark]: Toolchain (without parser) took 1776.15 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 73.2 MB in the beginning and 75.4 MB in the end (delta: -2.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:34,443 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 107.0 MB. Free memory was 60.6 MB in the beginning and 60.5 MB in the end (delta: 77.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:34,444 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.25 ms. Allocated memory is still 107.0 MB. Free memory was 73.0 MB in the beginning and 81.0 MB in the end (delta: -8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:34,444 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.11 ms. Allocated memory is still 107.0 MB. Free memory was 81.0 MB in the beginning and 79.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:34,445 INFO L168 Benchmark]: Boogie Preprocessor took 69.79 ms. Allocated memory is still 107.0 MB. Free memory was 79.2 MB in the beginning and 77.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:34,446 INFO L168 Benchmark]: RCFGBuilder took 883.35 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 77.8 MB in the beginning and 98.4 MB in the end (delta: -20.6 MB). Peak memory consumption was 33.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:34,447 INFO L168 Benchmark]: TraceAbstraction took 475.79 ms. Allocated memory is still 130.0 MB. Free memory was 97.6 MB in the beginning and 76.0 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:34,447 INFO L168 Benchmark]: Witness Printer took 4.22 ms. Allocated memory is still 130.0 MB. Free memory was 76.0 MB in the beginning and 75.4 MB in the end (delta: 655.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:34,451 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 107.0 MB. Free memory was 60.6 MB in the beginning and 60.5 MB in the end (delta: 77.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 283.25 ms. Allocated memory is still 107.0 MB. Free memory was 73.0 MB in the beginning and 81.0 MB in the end (delta: -8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.11 ms. Allocated memory is still 107.0 MB. Free memory was 81.0 MB in the beginning and 79.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 69.79 ms. Allocated memory is still 107.0 MB. Free memory was 79.2 MB in the beginning and 77.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 883.35 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 77.8 MB in the beginning and 98.4 MB in the end (delta: -20.6 MB). Peak memory consumption was 33.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 475.79 ms. Allocated memory is still 130.0 MB. Free memory was 97.6 MB in the beginning and 76.0 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 4.22 ms. Allocated memory is still 130.0 MB. Free memory was 76.0 MB in the beginning and 75.4 MB in the end (delta: 655.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 81]: 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 80, overapproximation of someUnaryFLOAToperation at line 76. Possible FailurePath: [L75] float x = 0.0f; [L76] float y = -0.0f; [L23] __uint32_t w; [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (x) [L28] EXPR gf_u.word [L28] (w) = gf_u.word [L31] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L33-L34] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L36-L37] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L39] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L42] return 0; [L46] COND TRUE __fpclassify_float(x) == 0 [L47] return y; [L77] float res = fmax_float(x, y); [L80] EXPR res == 0.0f && __signbit_float(res) == 0 [L80] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L81] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 19 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 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 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:24:36,998 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:24:37,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:24:37,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:24:37,040 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:24:37,041 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:24:37,043 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:24:37,045 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:24:37,048 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:24:37,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:24:37,051 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:24:37,052 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:24:37,053 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:24:37,054 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:24:37,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:24:37,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:24:37,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:24:37,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:24:37,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:24:37,064 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:24:37,066 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:24:37,067 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:24:37,069 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:24:37,070 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:24:37,074 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:24:37,074 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:24:37,075 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:24:37,076 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:24:37,076 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:24:37,078 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:24:37,078 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:24:37,079 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:24:37,080 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:24:37,081 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:24:37,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:24:37,089 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:24:37,091 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:24:37,091 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:24:37,092 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:24:37,093 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:24:37,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:24:37,097 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f30ea14-e863-4549-a4fa-5b2add4d8666/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-11 02:24:37,139 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:24:37,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:24:37,141 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:24:37,142 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:24:37,142 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:24:37,142 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:24:37,142 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:24:37,142 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:24:37,143 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:24:37,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:24:37,145 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:24:37,145 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:24:37,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:24:37,146 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:24:37,146 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:24:37,146 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:24:37,147 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:24:37,147 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 02:24:37,147 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 02:24:37,147 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:24:37,147 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:24:37,148 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:24:37,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:24:37,148 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:24:37,148 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 02:24:37,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:24:37,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:24:37,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:24:37,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:24:37,150 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:24:37,150 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-11 02:24:37,150 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 02:24:37,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:24:37,151 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:24:37,151 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:24:37,151 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_2f30ea14-e863-4549-a4fa-5b2add4d8666/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f30ea14-e863-4549-a4fa-5b2add4d8666/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fb4ea5d2ba4e3ce5c37a1ed90f4b993cc1661a1 [2021-10-11 02:24:37,527 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:24:37,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:24:37,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:24:37,554 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:24:37,554 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:24:37,556 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f30ea14-e863-4549-a4fa-5b2add4d8666/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c [2021-10-11 02:24:37,627 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f30ea14-e863-4549-a4fa-5b2add4d8666/bin/utaipan-WLngWcDbfI/data/a1398e09f/ba12628279d2434281b1540f949de785/FLAG3a0bf7a87 [2021-10-11 02:24:38,208 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:24:38,208 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f30ea14-e863-4549-a4fa-5b2add4d8666/sv-benchmarks/c/float-newlib/float_req_bl_1252b.c [2021-10-11 02:24:38,217 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f30ea14-e863-4549-a4fa-5b2add4d8666/bin/utaipan-WLngWcDbfI/data/a1398e09f/ba12628279d2434281b1540f949de785/FLAG3a0bf7a87 [2021-10-11 02:24:38,557 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f30ea14-e863-4549-a4fa-5b2add4d8666/bin/utaipan-WLngWcDbfI/data/a1398e09f/ba12628279d2434281b1540f949de785 [2021-10-11 02:24:38,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:24:38,561 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:24:38,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:24:38,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:24:38,567 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:24:38,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:38" (1/1) ... [2021-10-11 02:24:38,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a3b088c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:38, skipping insertion in model container [2021-10-11 02:24:38,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:38" (1/1) ... [2021-10-11 02:24:38,578 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:24:38,593 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:24:38,751 WARN L226 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_2f30ea14-e863-4549-a4fa-5b2add4d8666/sv-benchmarks/c/float-newlib/float_req_bl_1252b.c[1936,1949] [2021-10-11 02:24:38,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:24:38,768 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:24:38,839 WARN L226 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_2f30ea14-e863-4549-a4fa-5b2add4d8666/sv-benchmarks/c/float-newlib/float_req_bl_1252b.c[1936,1949] [2021-10-11 02:24:38,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:24:38,864 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:24:38,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:38 WrapperNode [2021-10-11 02:24:38,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:24:38,866 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:24:38,866 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:24:38,866 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:24:38,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:38" (1/1) ... [2021-10-11 02:24:38,884 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:38" (1/1) ... [2021-10-11 02:24:38,907 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:24:38,907 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:24:38,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:24:38,908 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:24:38,916 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:38" (1/1) ... [2021-10-11 02:24:38,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:38" (1/1) ... [2021-10-11 02:24:38,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:38" (1/1) ... [2021-10-11 02:24:38,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:38" (1/1) ... [2021-10-11 02:24:38,931 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:38" (1/1) ... [2021-10-11 02:24:38,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:38" (1/1) ... [2021-10-11 02:24:38,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:38" (1/1) ... [2021-10-11 02:24:38,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:24:38,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:24:38,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:24:38,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:24:38,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:38" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f30ea14-e863-4549-a4fa-5b2add4d8666/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:24:39,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-11 02:24:39,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:24:39,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-11 02:24:39,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:24:39,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:24:39,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-11 02:24:39,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:24:39,367 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:24:39,367 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-11 02:24:39,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:39 BoogieIcfgContainer [2021-10-11 02:24:39,369 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:24:39,371 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:24:39,371 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:24:39,374 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:24:39,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:24:38" (1/3) ... [2021-10-11 02:24:39,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57813909 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:39, skipping insertion in model container [2021-10-11 02:24:39,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:38" (2/3) ... [2021-10-11 02:24:39,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57813909 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:39, skipping insertion in model container [2021-10-11 02:24:39,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:39" (3/3) ... [2021-10-11 02:24:39,377 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b.c [2021-10-11 02:24:39,391 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:24:39,394 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:24:39,405 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:24:39,441 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:24:39,441 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:24:39,441 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:24:39,441 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:24:39,441 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:24:39,442 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:24:39,442 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:24:39,442 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:24:39,471 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2021-10-11 02:24:39,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:24:39,476 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:39,477 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:39,477 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:39,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:39,500 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2021-10-11 02:24:39,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:24:39,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1675243393] [2021-10-11 02:24:39,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f30ea14-e863-4549-a4fa-5b2add4d8666/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2021-10-11 02:24:39,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:39,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-11 02:24:39,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:24:39,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:39,709 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:24:39,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1675243393] [2021-10-11 02:24:39,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:39,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:24:39,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740015736] [2021-10-11 02:24:39,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:24:39,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:24:39,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:24:39,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:24:39,737 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2021-10-11 02:24:39,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:39,770 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2021-10-11 02:24:39,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:24:39,773 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2021-10-11 02:24:39,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:39,785 INFO L225 Difference]: With dead ends: 62 [2021-10-11 02:24:39,786 INFO L226 Difference]: Without dead ends: 29 [2021-10-11 02:24:39,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:24:39,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-11 02:24:39,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-11 02:24:39,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-10-11 02:24:39,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2021-10-11 02:24:39,833 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2021-10-11 02:24:39,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:39,833 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2021-10-11 02:24:39,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:24:39,834 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2021-10-11 02:24:39,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:24:39,835 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:39,835 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:40,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 02:24:40,052 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:40,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:40,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2021-10-11 02:24:40,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:24:40,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [208980690] [2021-10-11 02:24:40,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f30ea14-e863-4549-a4fa-5b2add4d8666/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2021-10-11 02:24:40,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:40,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:24:40,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:24:40,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:40,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:24:40,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [208980690] [2021-10-11 02:24:40,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:40,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:24:40,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106029583] [2021-10-11 02:24:40,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:24:40,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:24:40,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:24:40,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:24:40,249 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2021-10-11 02:24:40,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:40,333 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2021-10-11 02:24:40,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:24:40,334 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-10-11 02:24:40,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:40,337 INFO L225 Difference]: With dead ends: 53 [2021-10-11 02:24:40,337 INFO L226 Difference]: Without dead ends: 44 [2021-10-11 02:24:40,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:24:40,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-11 02:24:40,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2021-10-11 02:24:40,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-10-11 02:24:40,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2021-10-11 02:24:40,350 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2021-10-11 02:24:40,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:40,351 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2021-10-11 02:24:40,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:24:40,354 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2021-10-11 02:24:40,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:24:40,355 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:40,356 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:40,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2021-10-11 02:24:40,572 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:40,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:40,573 INFO L82 PathProgramCache]: Analyzing trace with hash 502201410, now seen corresponding path program 1 times [2021-10-11 02:24:40,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:24:40,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [994576285] [2021-10-11 02:24:40,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f30ea14-e863-4549-a4fa-5b2add4d8666/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2021-10-11 02:24:40,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:40,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-11 02:24:40,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:24:40,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:40,684 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:24:40,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [994576285] [2021-10-11 02:24:40,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:40,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:24:40,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919121484] [2021-10-11 02:24:40,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:24:40,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:24:40,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:24:40,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:24:40,687 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2021-10-11 02:24:40,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:40,733 INFO L93 Difference]: Finished difference Result 50 states and 67 transitions. [2021-10-11 02:24:40,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:24:40,734 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2021-10-11 02:24:40,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:40,734 INFO L225 Difference]: With dead ends: 50 [2021-10-11 02:24:40,735 INFO L226 Difference]: Without dead ends: 26 [2021-10-11 02:24:40,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:24:40,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-11 02:24:40,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-10-11 02:24:40,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-10-11 02:24:40,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2021-10-11 02:24:40,739 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 12 [2021-10-11 02:24:40,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:40,740 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2021-10-11 02:24:40,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:24:40,740 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2021-10-11 02:24:40,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 02:24:40,741 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:40,741 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:40,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2021-10-11 02:24:40,957 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:40,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:40,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2021-10-11 02:24:40,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:24:40,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2089017324] [2021-10-11 02:24:40,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f30ea14-e863-4549-a4fa-5b2add4d8666/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2021-10-11 02:24:41,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:41,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:24:41,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:24:41,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:41,096 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:24:41,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2089017324] [2021-10-11 02:24:41,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:41,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:24:41,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368298102] [2021-10-11 02:24:41,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:24:41,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:24:41,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:24:41,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:24:41,105 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 4 states. [2021-10-11 02:24:41,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:41,175 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2021-10-11 02:24:41,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:24:41,176 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2021-10-11 02:24:41,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:41,177 INFO L225 Difference]: With dead ends: 48 [2021-10-11 02:24:41,177 INFO L226 Difference]: Without dead ends: 39 [2021-10-11 02:24:41,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:24:41,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-11 02:24:41,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 28. [2021-10-11 02:24:41,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-10-11 02:24:41,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2021-10-11 02:24:41,183 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16 [2021-10-11 02:24:41,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:41,184 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2021-10-11 02:24:41,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:24:41,184 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2021-10-11 02:24:41,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 02:24:41,185 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:41,185 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:41,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2021-10-11 02:24:41,401 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:41,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:41,402 INFO L82 PathProgramCache]: Analyzing trace with hash 874935118, now seen corresponding path program 1 times [2021-10-11 02:24:41,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:24:41,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [212252743] [2021-10-11 02:24:41,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f30ea14-e863-4549-a4fa-5b2add4d8666/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2021-10-11 02:24:41,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:41,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-11 02:24:41,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:24:41,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:41,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:24:41,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [212252743] [2021-10-11 02:24:41,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:41,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:24:41,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582331250] [2021-10-11 02:24:41,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:24:41,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:24:41,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:24:41,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:24:41,540 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 5 states. [2021-10-11 02:24:41,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:41,624 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2021-10-11 02:24:41,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:24:41,626 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2021-10-11 02:24:41,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:41,627 INFO L225 Difference]: With dead ends: 39 [2021-10-11 02:24:41,628 INFO L226 Difference]: Without dead ends: 23 [2021-10-11 02:24:41,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:24:41,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-11 02:24:41,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-11 02:24:41,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-10-11 02:24:41,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-10-11 02:24:41,633 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 17 [2021-10-11 02:24:41,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:41,634 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-10-11 02:24:41,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:24:41,634 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2021-10-11 02:24:41,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-11 02:24:41,635 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:41,635 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:41,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2021-10-11 02:24:41,851 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:41,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:41,852 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2021-10-11 02:24:41,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:24:41,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1986629654] [2021-10-11 02:24:41,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f30ea14-e863-4549-a4fa-5b2add4d8666/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2021-10-11 02:24:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:41,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 02:24:41,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:24:41,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:41,998 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:24:41,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1986629654] [2021-10-11 02:24:41,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:41,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:24:41,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353469543] [2021-10-11 02:24:42,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:24:42,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:24:42,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:24:42,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:42,001 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 3 states. [2021-10-11 02:24:42,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:42,008 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2021-10-11 02:24:42,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:24:42,009 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2021-10-11 02:24:42,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:42,010 INFO L225 Difference]: With dead ends: 33 [2021-10-11 02:24:42,010 INFO L226 Difference]: Without dead ends: 23 [2021-10-11 02:24:42,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:42,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-11 02:24:42,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-11 02:24:42,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-10-11 02:24:42,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2021-10-11 02:24:42,014 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 18 [2021-10-11 02:24:42,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:42,014 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2021-10-11 02:24:42,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:24:42,014 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2021-10-11 02:24:42,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-11 02:24:42,015 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:42,015 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:42,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2021-10-11 02:24:42,235 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:42,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:42,235 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2021-10-11 02:24:42,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:24:42,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1813686373] [2021-10-11 02:24:42,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f30ea14-e863-4549-a4fa-5b2add4d8666/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2021-10-11 02:24:42,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:42,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 02:24:42,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:24:42,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:42,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:24:42,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1813686373] [2021-10-11 02:24:42,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:42,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 02:24:42,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661871075] [2021-10-11 02:24:42,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:24:42,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:24:42,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:24:42,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:24:42,365 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 6 states. [2021-10-11 02:24:42,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:42,431 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2021-10-11 02:24:42,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:24:42,431 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2021-10-11 02:24:42,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:42,432 INFO L225 Difference]: With dead ends: 26 [2021-10-11 02:24:42,432 INFO L226 Difference]: Without dead ends: 23 [2021-10-11 02:24:42,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:24:42,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-11 02:24:42,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-11 02:24:42,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-10-11 02:24:42,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2021-10-11 02:24:42,437 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 18 [2021-10-11 02:24:42,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:42,437 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2021-10-11 02:24:42,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:24:42,438 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2021-10-11 02:24:42,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-11 02:24:42,438 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:42,439 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:42,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2021-10-11 02:24:42,654 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:42,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:42,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2021-10-11 02:24:42,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:24:42,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [300014836] [2021-10-11 02:24:42,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f30ea14-e863-4549-a4fa-5b2add4d8666/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2021-10-11 02:24:42,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:24:42,764 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:24:42,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:24:42,847 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:24:42,895 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-11 02:24:42,895 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:24:43,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2021-10-11 02:24:43,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:24:43 BoogieIcfgContainer [2021-10-11 02:24:43,150 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:24:43,151 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:24:43,151 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:24:43,151 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:24:43,152 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:39" (3/4) ... [2021-10-11 02:24:43,153 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:24:43,223 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f30ea14-e863-4549-a4fa-5b2add4d8666/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:24:43,223 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:24:43,225 INFO L168 Benchmark]: Toolchain (without parser) took 4662.65 ms. Allocated memory was 58.7 MB in the beginning and 83.9 MB in the end (delta: 25.2 MB). Free memory was 36.7 MB in the beginning and 25.7 MB in the end (delta: 11.0 MB). Peak memory consumption was 35.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:43,226 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 58.7 MB. Free memory is still 39.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:43,226 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.07 ms. Allocated memory is still 58.7 MB. Free memory was 36.5 MB in the beginning and 40.8 MB in the end (delta: -4.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:43,227 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.93 ms. Allocated memory is still 58.7 MB. Free memory was 40.8 MB in the beginning and 39.1 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:43,227 INFO L168 Benchmark]: Boogie Preprocessor took 34.88 ms. Allocated memory is still 58.7 MB. Free memory was 39.1 MB in the beginning and 37.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:43,228 INFO L168 Benchmark]: RCFGBuilder took 426.13 ms. Allocated memory is still 58.7 MB. Free memory was 37.5 MB in the beginning and 33.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:43,228 INFO L168 Benchmark]: TraceAbstraction took 3779.80 ms. Allocated memory was 58.7 MB in the beginning and 83.9 MB in the end (delta: 25.2 MB). Free memory was 32.9 MB in the beginning and 28.5 MB in the end (delta: 4.4 MB). Peak memory consumption was 28.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:43,229 INFO L168 Benchmark]: Witness Printer took 72.59 ms. Allocated memory is still 83.9 MB. Free memory was 28.5 MB in the beginning and 25.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:43,232 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 58.7 MB. Free memory is still 39.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 302.07 ms. Allocated memory is still 58.7 MB. Free memory was 36.5 MB in the beginning and 40.8 MB in the end (delta: -4.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.93 ms. Allocated memory is still 58.7 MB. Free memory was 40.8 MB in the beginning and 39.1 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.88 ms. Allocated memory is still 58.7 MB. Free memory was 39.1 MB in the beginning and 37.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 426.13 ms. Allocated memory is still 58.7 MB. Free memory was 37.5 MB in the beginning and 33.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3779.80 ms. Allocated memory was 58.7 MB in the beginning and 83.9 MB in the end (delta: 25.2 MB). Free memory was 32.9 MB in the beginning and 28.5 MB in the end (delta: 4.4 MB). Peak memory consumption was 28.5 MB. Max. memory is 16.1 GB. * Witness Printer took 72.59 ms. Allocated memory is still 83.9 MB. Free memory was 28.5 MB in the beginning and 25.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 81]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L75] float x = 0.0f; [L76] float y = -0.0f; [L23] __uint32_t w; [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (x) [L28] EXPR gf_u.word [L28] (w) = gf_u.word [L31] COND TRUE w == 0x00000000 || w == 0x80000000 [L32] return 2; [L46] COND FALSE !(__fpclassify_float(x) == 0) [L23] __uint32_t w; [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (x) [L28] EXPR gf_u.word [L28] (w) = gf_u.word [L31] COND TRUE w == 0x00000000 || w == 0x80000000 [L32] return 2; [L50] COND FALSE !(__fpclassify_float(y) == 0) [L53] EXPR x > y ? x : y [L53] return x > y ? x : y; [L77] float res = fmax_float(x, y); [L80] EXPR res == 0.0f && __signbit_float(res) == 0 [L57] __uint32_t w; [L60] ieee_float_shape_type gf_u; [L61] gf_u.value = (x) [L62] EXPR gf_u.word [L62] (w) = gf_u.word [L65] return (w & 0x80000000) != 0; [L80] EXPR res == 0.0f && __signbit_float(res) == 0 [L80] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L81] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.6s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 214 SDtfs, 118 SDslu, 217 SDs, 0 SdLazy, 82 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 24 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 95 ConstructedInterpolants, 0 QuantifiedInterpolants, 4207 SizeOfPredicates, 27 NumberOfNonLiveVariables, 403 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...