./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1072a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1e764766-63f2-4a59-88c6-d9a197098209/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1e764766-63f2-4a59-88c6-d9a197098209/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1e764766-63f2-4a59-88c6-d9a197098209/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1e764766-63f2-4a59-88c6-d9a197098209/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1072a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1e764766-63f2-4a59-88c6-d9a197098209/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1e764766-63f2-4a59-88c6-d9a197098209/bin/utaipan --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 9ef877ce38bde19caca23c0b110041aea30d9b13 ................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1e764766-63f2-4a59-88c6-d9a197098209/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1e764766-63f2-4a59-88c6-d9a197098209/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1e764766-63f2-4a59-88c6-d9a197098209/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1e764766-63f2-4a59-88c6-d9a197098209/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1072a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1e764766-63f2-4a59-88c6-d9a197098209/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1e764766-63f2-4a59-88c6-d9a197098209/bin/utaipan --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 9ef877ce38bde19caca23c0b110041aea30d9b13 ......................................................................................................................................................................................................................................................................................................................... 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-a4ecdab [2020-11-28 07:36:59,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:36:59,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:36:59,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:36:59,567 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:36:59,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:36:59,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:36:59,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:36:59,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:36:59,587 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:36:59,588 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:36:59,590 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:36:59,590 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:36:59,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:36:59,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:36:59,598 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:36:59,599 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:36:59,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:36:59,612 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:36:59,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:36:59,625 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:36:59,626 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:36:59,629 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:36:59,630 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:36:59,639 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:36:59,639 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:36:59,639 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:36:59,642 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:36:59,642 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:36:59,643 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:36:59,644 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:36:59,645 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:36:59,647 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:36:59,648 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:36:59,649 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:36:59,649 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:36:59,650 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:36:59,650 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:36:59,650 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:36:59,652 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:36:59,654 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:36:59,656 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1e764766-63f2-4a59-88c6-d9a197098209/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:36:59,696 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:36:59,696 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:36:59,698 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:36:59,698 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:36:59,698 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:36:59,698 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:36:59,699 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:36:59,699 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:36:59,699 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:36:59,699 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:36:59,700 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:36:59,700 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:36:59,701 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:36:59,701 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:36:59,701 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:36:59,702 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:36:59,702 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:36:59,702 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:36:59,702 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:36:59,702 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:36:59,703 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:36:59,703 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:36:59,703 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:36:59,703 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:36:59,703 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:36:59,704 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:36:59,704 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:36:59,704 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:36:59,704 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:36:59,704 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:36:59,705 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:36:59,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:36:59,705 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:36:59,705 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:36:59,706 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:36:59,706 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:36:59,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:36:59,706 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:36:59,706 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:36:59,706 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:36:59,707 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-vcloud-master/worker/run_dir_1e764766-63f2-4a59-88c6-d9a197098209/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1e764766-63f2-4a59-88c6-d9a197098209/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ef877ce38bde19caca23c0b110041aea30d9b13 [2020-11-28 07:36:59,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:37:00,015 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:37:00,018 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:37:00,019 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:37:00,020 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:37:00,021 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1e764766-63f2-4a59-88c6-d9a197098209/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1072a.c [2020-11-28 07:37:00,103 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1e764766-63f2-4a59-88c6-d9a197098209/bin/utaipan/data/a690b75d7/e20fa57bdf954c4ab1bfdde362313dfa/FLAG57b0eb5de [2020-11-28 07:37:00,608 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:37:00,609 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1e764766-63f2-4a59-88c6-d9a197098209/sv-benchmarks/c/float-newlib/double_req_bl_1072a.c [2020-11-28 07:37:00,621 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1e764766-63f2-4a59-88c6-d9a197098209/bin/utaipan/data/a690b75d7/e20fa57bdf954c4ab1bfdde362313dfa/FLAG57b0eb5de [2020-11-28 07:37:00,966 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1e764766-63f2-4a59-88c6-d9a197098209/bin/utaipan/data/a690b75d7/e20fa57bdf954c4ab1bfdde362313dfa [2020-11-28 07:37:00,969 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:37:00,972 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:37:00,977 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:37:00,978 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:37:00,982 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:37:00,983 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:37:00" (1/1) ... [2020-11-28 07:37:00,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bf8b2c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:00, skipping insertion in model container [2020-11-28 07:37:00,986 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:37:00" (1/1) ... [2020-11-28 07:37:00,994 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:37:01,015 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:37:01,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:37:01,268 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:37:01,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:37:01,318 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:37:01,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:01 WrapperNode [2020-11-28 07:37:01,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:37:01,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:37:01,321 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:37:01,321 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:37:01,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:01" (1/1) ... [2020-11-28 07:37:01,338 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:01" (1/1) ... [2020-11-28 07:37:01,361 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:37:01,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:37:01,364 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:37:01,364 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:37:01,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:01" (1/1) ... [2020-11-28 07:37:01,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:01" (1/1) ... [2020-11-28 07:37:01,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:01" (1/1) ... [2020-11-28 07:37:01,388 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:01" (1/1) ... [2020-11-28 07:37:01,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:01" (1/1) ... [2020-11-28 07:37:01,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:01" (1/1) ... [2020-11-28 07:37:01,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:01" (1/1) ... [2020-11-28 07:37:01,440 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:37:01,445 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:37:01,445 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:37:01,445 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:37:01,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1e764766-63f2-4a59-88c6-d9a197098209/bin/utaipan/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 [2020-11-28 07:37:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:37:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:37:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-28 07:37:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 07:37:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-28 07:37:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:37:01,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:37:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 07:37:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:37:02,153 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:37:02,154 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-28 07:37:02,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:37:02 BoogieIcfgContainer [2020-11-28 07:37:02,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:37:02,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:37:02,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:37:02,162 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:37:02,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:37:00" (1/3) ... [2020-11-28 07:37:02,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62d5078c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:37:02, skipping insertion in model container [2020-11-28 07:37:02,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:01" (2/3) ... [2020-11-28 07:37:02,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62d5078c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:37:02, skipping insertion in model container [2020-11-28 07:37:02,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:37:02" (3/3) ... [2020-11-28 07:37:02,167 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072a.c [2020-11-28 07:37:02,178 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:37:02,182 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:37:02,194 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:37:02,218 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:37:02,218 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:37:02,219 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:37:02,219 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:37:02,219 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:37:02,219 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:37:02,219 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:37:02,219 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:37:02,232 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-11-28 07:37:02,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:37:02,237 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:02,238 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:02,238 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:02,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:02,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1971406064, now seen corresponding path program 1 times [2020-11-28 07:37:02,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:02,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175411592] [2020-11-28 07:37:02,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:02,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:02,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:02,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175411592] [2020-11-28 07:37:02,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:02,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:37:02,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609510315] [2020-11-28 07:37:02,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:37:02,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:02,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:37:02,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:37:02,437 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2020-11-28 07:37:02,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:02,457 INFO L93 Difference]: Finished difference Result 47 states and 75 transitions. [2020-11-28 07:37:02,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:37:02,459 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-28 07:37:02,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:02,479 INFO L225 Difference]: With dead ends: 47 [2020-11-28 07:37:02,482 INFO L226 Difference]: Without dead ends: 22 [2020-11-28 07:37:02,486 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 [2020-11-28 07:37:02,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-28 07:37:02,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-11-28 07:37:02,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-28 07:37:02,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-11-28 07:37:02,528 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 11 [2020-11-28 07:37:02,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:02,529 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-11-28 07:37:02,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:37:02,529 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-11-28 07:37:02,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:37:02,530 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:02,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:02,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:37:02,532 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:02,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:02,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1803644696, now seen corresponding path program 1 times [2020-11-28 07:37:02,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:02,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137419588] [2020-11-28 07:37:02,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:02,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:37:02,822 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:37:02,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:37:02,919 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:37:02,944 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:37:02,944 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:37:02,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:37:02,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:37:02 BoogieIcfgContainer [2020-11-28 07:37:02,971 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:37:02,971 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:37:02,972 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:37:02,972 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:37:02,972 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:37:02" (3/4) ... [2020-11-28 07:37:02,975 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 07:37:02,976 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:37:02,977 INFO L168 Benchmark]: Toolchain (without parser) took 2004.94 ms. Allocated memory is still 102.8 MB. Free memory was 69.7 MB in the beginning and 68.8 MB in the end (delta: 920.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:37:02,978 INFO L168 Benchmark]: CDTParser took 3.83 ms. Allocated memory is still 102.8 MB. Free memory was 75.8 MB in the beginning and 75.8 MB in the end (delta: 30.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:37:02,979 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.10 ms. Allocated memory is still 102.8 MB. Free memory was 69.5 MB in the beginning and 78.7 MB in the end (delta: -9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:02,980 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.73 ms. Allocated memory is still 102.8 MB. Free memory was 78.7 MB in the beginning and 77.1 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:37:02,980 INFO L168 Benchmark]: Boogie Preprocessor took 81.00 ms. Allocated memory is still 102.8 MB. Free memory was 77.1 MB in the beginning and 75.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:02,981 INFO L168 Benchmark]: RCFGBuilder took 711.85 ms. Allocated memory is still 102.8 MB. Free memory was 75.0 MB in the beginning and 50.2 MB in the end (delta: 24.8 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:02,982 INFO L168 Benchmark]: TraceAbstraction took 813.17 ms. Allocated memory is still 102.8 MB. Free memory was 50.2 MB in the beginning and 69.4 MB in the end (delta: -19.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:37:02,982 INFO L168 Benchmark]: Witness Printer took 4.21 ms. Allocated memory is still 102.8 MB. Free memory was 69.4 MB in the beginning and 68.8 MB in the end (delta: 626.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:37:02,986 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 3.83 ms. Allocated memory is still 102.8 MB. Free memory was 75.8 MB in the beginning and 75.8 MB in the end (delta: 30.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 343.10 ms. Allocated memory is still 102.8 MB. Free memory was 69.5 MB in the beginning and 78.7 MB in the end (delta: -9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.73 ms. Allocated memory is still 102.8 MB. Free memory was 78.7 MB in the beginning and 77.1 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 81.00 ms. Allocated memory is still 102.8 MB. Free memory was 77.1 MB in the beginning and 75.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 711.85 ms. Allocated memory is still 102.8 MB. Free memory was 75.0 MB in the beginning and 50.2 MB in the end (delta: 24.8 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 813.17 ms. Allocated memory is still 102.8 MB. Free memory was 50.2 MB in the beginning and 69.4 MB in the end (delta: -19.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.21 ms. Allocated memory is still 102.8 MB. Free memory was 69.4 MB in the beginning and 68.8 MB in the end (delta: 626.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 74, overapproximation of someBinaryArithmeticDOUBLEoperation at line 51, overapproximation of bitwiseAnd at line 73. Possible FailurePath: [L86] double x = 1.0 / 0.0; [L20] int signbit; [L21] int msw; [L22] unsigned int lsw; [L23] int exponent_less_1023; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (msw) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lsw) = ew_u.parts.lsw [L30] signbit = msw & 0x80000000 [L31] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L32] COND FALSE !(exponent_less_1023 < 20) [L49] COND TRUE exponent_less_1023 > 51 [L50] COND TRUE exponent_less_1023 == 1024 [L51] return x + x; [L87] double res = trunc_double(x); [L66] __int32_t hx, lx; [L68] ieee_double_shape_type ew_u; [L69] ew_u.value = (x) [L70] EXPR ew_u.parts.msw [L70] (hx) = ew_u.parts.msw [L71] EXPR ew_u.parts.lsw [L71] (lx) = ew_u.parts.lsw [L73] hx &= 0x7fffffff [L74] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L75] hx = 0x7ff00000 - hx [L76] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L90] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1072a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 27 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=24occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 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-a4ecdab [2020-11-28 07:37:05,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:37:05,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:37:05,650 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:37:05,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:37:05,656 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:37:05,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:37:05,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:37:05,668 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:37:05,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:37:05,677 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:37:05,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:37:05,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:37:05,685 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:37:05,686 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:37:05,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:37:05,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:37:05,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:37:05,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:37:05,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:37:05,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:37:05,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:37:05,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:37:05,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:37:05,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:37:05,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:37:05,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:37:05,704 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:37:05,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:37:05,705 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:37:05,705 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:37:05,706 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:37:05,707 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:37:05,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:37:05,713 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:37:05,713 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:37:05,714 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:37:05,715 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:37:05,715 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:37:05,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:37:05,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:37:05,719 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1e764766-63f2-4a59-88c6-d9a197098209/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-28 07:37:05,749 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:37:05,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:37:05,750 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:37:05,751 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:37:05,751 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:37:05,751 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:37:05,751 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:37:05,751 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:37:05,752 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:37:05,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:37:05,753 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:37:05,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:37:05,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:37:05,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:37:05,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:37:05,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:37:05,754 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:37:05,754 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 07:37:05,754 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 07:37:05,754 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:37:05,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:37:05,755 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:37:05,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:37:05,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:37:05,755 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 07:37:05,755 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:37:05,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:37:05,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:37:05,765 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:37:05,765 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:37:05,765 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:37:05,765 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-28 07:37:05,765 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 07:37:05,765 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:37:05,766 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:37:05,766 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:37:05,766 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-vcloud-master/worker/run_dir_1e764766-63f2-4a59-88c6-d9a197098209/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1e764766-63f2-4a59-88c6-d9a197098209/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ef877ce38bde19caca23c0b110041aea30d9b13 [2020-11-28 07:37:06,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:37:06,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:37:06,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:37:06,154 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:37:06,155 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:37:06,155 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1e764766-63f2-4a59-88c6-d9a197098209/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1072a.c [2020-11-28 07:37:06,233 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1e764766-63f2-4a59-88c6-d9a197098209/bin/utaipan/data/53b12898c/c8d99ab1caf44e6db7326bdd788fae6c/FLAG06d21cf60 [2020-11-28 07:37:06,815 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:37:06,815 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1e764766-63f2-4a59-88c6-d9a197098209/sv-benchmarks/c/float-newlib/double_req_bl_1072a.c [2020-11-28 07:37:06,827 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1e764766-63f2-4a59-88c6-d9a197098209/bin/utaipan/data/53b12898c/c8d99ab1caf44e6db7326bdd788fae6c/FLAG06d21cf60 [2020-11-28 07:37:07,166 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1e764766-63f2-4a59-88c6-d9a197098209/bin/utaipan/data/53b12898c/c8d99ab1caf44e6db7326bdd788fae6c [2020-11-28 07:37:07,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:37:07,172 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:37:07,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:37:07,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:37:07,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:37:07,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:37:07" (1/1) ... [2020-11-28 07:37:07,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c175f97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:07, skipping insertion in model container [2020-11-28 07:37:07,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:37:07" (1/1) ... [2020-11-28 07:37:07,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:37:07,213 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:37:07,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:37:07,434 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:37:07,471 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:37:07,490 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:37:07,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:07 WrapperNode [2020-11-28 07:37:07,491 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:37:07,492 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:37:07,492 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:37:07,492 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:37:07,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:07" (1/1) ... [2020-11-28 07:37:07,510 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:07" (1/1) ... [2020-11-28 07:37:07,543 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:37:07,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:37:07,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:37:07,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:37:07,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:07" (1/1) ... [2020-11-28 07:37:07,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:07" (1/1) ... [2020-11-28 07:37:07,559 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:07" (1/1) ... [2020-11-28 07:37:07,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:07" (1/1) ... [2020-11-28 07:37:07,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:07" (1/1) ... [2020-11-28 07:37:07,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:07" (1/1) ... [2020-11-28 07:37:07,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:07" (1/1) ... [2020-11-28 07:37:07,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:37:07,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:37:07,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:37:07,614 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:37:07,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1e764766-63f2-4a59-88c6-d9a197098209/bin/utaipan/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 [2020-11-28 07:37:07,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-28 07:37:07,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-28 07:37:07,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 07:37:07,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:37:07,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 07:37:07,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:37:07,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:37:07,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-28 07:37:07,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:37:08,445 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:37:08,445 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-28 07:37:08,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:37:08 BoogieIcfgContainer [2020-11-28 07:37:08,447 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:37:08,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:37:08,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:37:08,451 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:37:08,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:37:07" (1/3) ... [2020-11-28 07:37:08,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cc2dd11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:37:08, skipping insertion in model container [2020-11-28 07:37:08,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:07" (2/3) ... [2020-11-28 07:37:08,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cc2dd11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:37:08, skipping insertion in model container [2020-11-28 07:37:08,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:37:08" (3/3) ... [2020-11-28 07:37:08,454 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072a.c [2020-11-28 07:37:08,465 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:37:08,469 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:37:08,480 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:37:08,501 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:37:08,502 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:37:08,502 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:37:08,502 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:37:08,502 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:37:08,502 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:37:08,503 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:37:08,503 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:37:08,520 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-11-28 07:37:08,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:37:08,526 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:08,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:08,527 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:08,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:08,533 INFO L82 PathProgramCache]: Analyzing trace with hash 748040733, now seen corresponding path program 1 times [2020-11-28 07:37:08,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:37:08,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [40202908] [2020-11-28 07:37:08,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1e764766-63f2-4a59-88c6-d9a197098209/bin/utaipan/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 [2020-11-28 07:37:08,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:08,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 07:37:08,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:37:08,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:08,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:37:08,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:08,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [40202908] [2020-11-28 07:37:08,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:08,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 07:37:08,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522592062] [2020-11-28 07:37:08,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:37:08,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:37:08,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:37:08,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:37:08,764 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-11-28 07:37:08,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:08,781 INFO L93 Difference]: Finished difference Result 53 states and 81 transitions. [2020-11-28 07:37:08,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:37:08,783 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-28 07:37:08,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:08,791 INFO L225 Difference]: With dead ends: 53 [2020-11-28 07:37:08,792 INFO L226 Difference]: Without dead ends: 24 [2020-11-28 07:37:08,794 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:37:08,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-11-28 07:37:08,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-11-28 07:37:08,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-28 07:37:08,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-11-28 07:37:08,826 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 13 [2020-11-28 07:37:08,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:08,826 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-11-28 07:37:08,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:37:08,826 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-11-28 07:37:08,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 07:37:08,827 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:08,827 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:09,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 07:37:09,037 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:09,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:09,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1214246053, now seen corresponding path program 1 times [2020-11-28 07:37:09,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:37:09,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1314834206] [2020-11-28 07:37:09,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1e764766-63f2-4a59-88c6-d9a197098209/bin/utaipan/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 [2020-11-28 07:37:09,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:37:09,353 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:37:09,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:37:09,510 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:37:09,569 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-28 07:37:09,569 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:37:09,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 07:37:09,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:37:09 BoogieIcfgContainer [2020-11-28 07:37:09,801 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:37:09,802 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:37:09,802 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:37:09,802 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:37:09,803 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:37:08" (3/4) ... [2020-11-28 07:37:09,804 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:37:09,866 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1e764766-63f2-4a59-88c6-d9a197098209/bin/utaipan/witness.graphml [2020-11-28 07:37:09,866 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:37:09,869 INFO L168 Benchmark]: Toolchain (without parser) took 2694.97 ms. Allocated memory was 50.3 MB in the beginning and 69.2 MB in the end (delta: 18.9 MB). Free memory was 27.5 MB in the beginning and 44.0 MB in the end (delta: -16.5 MB). Peak memory consumption was 1.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:09,869 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 50.3 MB. Free memory was 32.9 MB in the beginning and 32.9 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:37:09,870 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.52 ms. Allocated memory is still 50.3 MB. Free memory was 27.4 MB in the beginning and 27.6 MB in the end (delta: -290.2 kB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:09,871 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.30 ms. Allocated memory was 50.3 MB in the beginning and 69.2 MB in the end (delta: 18.9 MB). Free memory was 27.6 MB in the beginning and 52.7 MB in the end (delta: -25.0 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:09,878 INFO L168 Benchmark]: Boogie Preprocessor took 68.42 ms. Allocated memory is still 69.2 MB. Free memory was 52.7 MB in the beginning and 50.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:09,879 INFO L168 Benchmark]: RCFGBuilder took 833.62 ms. Allocated memory is still 69.2 MB. Free memory was 50.6 MB in the beginning and 46.8 MB in the end (delta: 3.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:09,880 INFO L168 Benchmark]: TraceAbstraction took 1353.07 ms. Allocated memory is still 69.2 MB. Free memory was 46.6 MB in the beginning and 46.4 MB in the end (delta: 114.5 kB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:09,880 INFO L168 Benchmark]: Witness Printer took 64.62 ms. Allocated memory is still 69.2 MB. Free memory was 46.0 MB in the beginning and 44.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:09,884 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 50.3 MB. Free memory was 32.9 MB in the beginning and 32.9 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 316.52 ms. Allocated memory is still 50.3 MB. Free memory was 27.4 MB in the beginning and 27.6 MB in the end (delta: -290.2 kB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.30 ms. Allocated memory was 50.3 MB in the beginning and 69.2 MB in the end (delta: 18.9 MB). Free memory was 27.6 MB in the beginning and 52.7 MB in the end (delta: -25.0 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 68.42 ms. Allocated memory is still 69.2 MB. Free memory was 52.7 MB in the beginning and 50.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 833.62 ms. Allocated memory is still 69.2 MB. Free memory was 50.6 MB in the beginning and 46.8 MB in the end (delta: 3.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1353.07 ms. Allocated memory is still 69.2 MB. Free memory was 46.6 MB in the beginning and 46.4 MB in the end (delta: 114.5 kB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. * Witness Printer took 64.62 ms. Allocated memory is still 69.2 MB. Free memory was 46.0 MB in the beginning and 44.0 MB in the end (delta: 2.1 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: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L86] double x = 1.0 / 0.0; [L20] int signbit; [L21] int msw; [L22] unsigned int lsw; [L23] int exponent_less_1023; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (msw) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lsw) = ew_u.parts.lsw [L30] signbit = msw & 0x80000000 [L31] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L32] COND FALSE !(exponent_less_1023 < 20) [L49] COND TRUE exponent_less_1023 > 51 [L50] COND TRUE exponent_less_1023 == 1024 [L51] return x + x; [L87] double res = trunc_double(x); [L66] __int32_t hx, lx; [L68] ieee_double_shape_type ew_u; [L69] ew_u.value = (x) [L70] EXPR ew_u.parts.msw [L70] (hx) = ew_u.parts.msw [L71] EXPR ew_u.parts.lsw [L71] (lx) = ew_u.parts.lsw [L73] hx &= 0x7fffffff [L74] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L75] hx = 0x7ff00000 - hx [L76] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L90] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1072a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 288 SizeOfPredicates, 0 NumberOfNonLiveVariables, 41 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...