./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1091.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_d664be08-52b4-4adc-8b59-fe506cd09d4e/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d664be08-52b4-4adc-8b59-fe506cd09d4e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d664be08-52b4-4adc-8b59-fe506cd09d4e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d664be08-52b4-4adc-8b59-fe506cd09d4e/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d664be08-52b4-4adc-8b59-fe506cd09d4e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d664be08-52b4-4adc-8b59-fe506cd09d4e/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 29db272de411ec8ad8f5c2bb2f7576cb66abdc0d ......................................................................................................................................................................................................................................................................................................... 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_d664be08-52b4-4adc-8b59-fe506cd09d4e/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d664be08-52b4-4adc-8b59-fe506cd09d4e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d664be08-52b4-4adc-8b59-fe506cd09d4e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d664be08-52b4-4adc-8b59-fe506cd09d4e/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d664be08-52b4-4adc-8b59-fe506cd09d4e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d664be08-52b4-4adc-8b59-fe506cd09d4e/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 29db272de411ec8ad8f5c2bb2f7576cb66abdc0d ...................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:07:59,798 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:07:59,835 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:07:59,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:07:59,894 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:07:59,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:07:59,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:07:59,906 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:07:59,909 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:07:59,915 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:07:59,916 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:07:59,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:07:59,919 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:07:59,922 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:07:59,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:07:59,926 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:07:59,927 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:07:59,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:07:59,935 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:07:59,943 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:07:59,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:07:59,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:07:59,949 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:07:59,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:07:59,959 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:07:59,959 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:07:59,960 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:07:59,962 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:07:59,963 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:07:59,964 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:07:59,964 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:07:59,966 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:07:59,968 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:07:59,970 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:07:59,971 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:07:59,971 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:07:59,972 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:07:59,972 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:07:59,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:07:59,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:07:59,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:07:59,978 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d664be08-52b4-4adc-8b59-fe506cd09d4e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:08:00,025 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:08:00,025 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:08:00,027 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:08:00,027 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:08:00,027 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:08:00,028 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:08:00,028 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:08:00,028 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:08:00,028 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:08:00,028 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:08:00,029 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:08:00,030 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:08:00,030 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:08:00,030 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:08:00,030 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:08:00,031 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:08:00,031 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:08:00,032 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:08:00,032 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:08:00,032 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:08:00,032 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:08:00,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:08:00,033 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:08:00,033 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:08:00,033 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:08:00,033 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:08:00,034 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:08:00,034 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:08:00,034 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:08:00,036 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:08:00,036 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:08:00,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:08:00,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:08:00,037 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:08:00,037 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:08:00,037 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:08:00,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:08:00,037 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:08:00,038 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:08:00,038 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:08:00,038 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_d664be08-52b4-4adc-8b59-fe506cd09d4e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d664be08-52b4-4adc-8b59-fe506cd09d4e/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29db272de411ec8ad8f5c2bb2f7576cb66abdc0d [2020-11-22 13:08:00,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:08:00,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:08:00,391 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:08:00,392 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:08:00,393 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:08:00,394 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d664be08-52b4-4adc-8b59-fe506cd09d4e/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2020-11-22 13:08:00,469 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d664be08-52b4-4adc-8b59-fe506cd09d4e/bin/utaipan/data/4476ed552/5da63d91210945178382e2bef415cdfe/FLAGebcb836e2 [2020-11-22 13:08:00,955 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:08:00,955 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d664be08-52b4-4adc-8b59-fe506cd09d4e/sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2020-11-22 13:08:00,966 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d664be08-52b4-4adc-8b59-fe506cd09d4e/bin/utaipan/data/4476ed552/5da63d91210945178382e2bef415cdfe/FLAGebcb836e2 [2020-11-22 13:08:01,326 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d664be08-52b4-4adc-8b59-fe506cd09d4e/bin/utaipan/data/4476ed552/5da63d91210945178382e2bef415cdfe [2020-11-22 13:08:01,328 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:08:01,329 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:08:01,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:08:01,335 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:08:01,339 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:08:01,339 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:08:01" (1/1) ... [2020-11-22 13:08:01,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7569536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:01, skipping insertion in model container [2020-11-22 13:08:01,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:08:01" (1/1) ... [2020-11-22 13:08:01,353 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:08:01,374 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:08:01,623 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:08:01,637 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:08:01,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:08:01,702 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:08:01,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:01 WrapperNode [2020-11-22 13:08:01,703 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:08:01,705 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:08:01,705 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:08:01,705 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:08:01,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:01" (1/1) ... [2020-11-22 13:08:01,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:01" (1/1) ... [2020-11-22 13:08:01,762 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:08:01,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:08:01,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:08:01,764 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:08:01,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:01" (1/1) ... [2020-11-22 13:08:01,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:01" (1/1) ... [2020-11-22 13:08:01,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:01" (1/1) ... [2020-11-22 13:08:01,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:01" (1/1) ... [2020-11-22 13:08:01,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:01" (1/1) ... [2020-11-22 13:08:01,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:01" (1/1) ... [2020-11-22 13:08:01,810 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:01" (1/1) ... [2020-11-22 13:08:01,815 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:08:01,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:08:01,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:08:01,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:08:01,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d664be08-52b4-4adc-8b59-fe506cd09d4e/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 [2020-11-22 13:08:01,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:08:01,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:08:01,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-22 13:08:01,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-22 13:08:01,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-22 13:08:01,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:08:01,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:08:01,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-22 13:08:01,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 13:08:02,627 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:08:02,627 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-22 13:08:02,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:08:02 BoogieIcfgContainer [2020-11-22 13:08:02,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:08:02,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:08:02,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:08:02,634 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:08:02,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:08:01" (1/3) ... [2020-11-22 13:08:02,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b21d5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:08:02, skipping insertion in model container [2020-11-22 13:08:02,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:01" (2/3) ... [2020-11-22 13:08:02,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b21d5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:08:02, skipping insertion in model container [2020-11-22 13:08:02,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:08:02" (3/3) ... [2020-11-22 13:08:02,638 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1091.c [2020-11-22 13:08:02,650 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:08:02,655 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:08:02,667 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:08:02,693 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:08:02,693 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:08:02,693 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:08:02,693 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:08:02,693 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:08:02,694 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:08:02,694 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:08:02,694 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:08:02,708 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-11-22 13:08:02,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-22 13:08:02,713 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:02,714 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:08:02,714 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:08:02,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:02,721 INFO L82 PathProgramCache]: Analyzing trace with hash 545568920, now seen corresponding path program 1 times [2020-11-22 13:08:02,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:08:02,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481425918] [2020-11-22 13:08:02,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:08:02,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:02,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:02,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481425918] [2020-11-22 13:08:02,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:02,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:08:02,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199819645] [2020-11-22 13:08:02,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 13:08:02,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:08:02,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 13:08:02,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:08:02,892 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2020-11-22 13:08:02,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:02,907 INFO L93 Difference]: Finished difference Result 31 states and 45 transitions. [2020-11-22 13:08:02,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 13:08:02,909 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-22 13:08:02,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:02,918 INFO L225 Difference]: With dead ends: 31 [2020-11-22 13:08:02,918 INFO L226 Difference]: Without dead ends: 14 [2020-11-22 13:08:02,920 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 [2020-11-22 13:08:02,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-22 13:08:02,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-22 13:08:02,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-22 13:08:02,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-11-22 13:08:02,952 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 7 [2020-11-22 13:08:02,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:02,953 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-11-22 13:08:02,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 13:08:02,953 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-11-22 13:08:02,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 13:08:02,954 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:02,954 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:08:02,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:08:02,954 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:08:02,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:02,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1884192261, now seen corresponding path program 1 times [2020-11-22 13:08:02,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:08:02,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809130919] [2020-11-22 13:08:02,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:08:03,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:08:03,018 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:08:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:08:03,059 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:08:03,082 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 13:08:03,082 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:08:03,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:08:03,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:08:03 BoogieIcfgContainer [2020-11-22 13:08:03,109 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:08:03,110 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:08:03,110 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:08:03,110 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:08:03,111 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:08:02" (3/4) ... [2020-11-22 13:08:03,114 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-22 13:08:03,114 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:08:03,117 INFO L168 Benchmark]: Toolchain (without parser) took 1786.17 ms. Allocated memory was 94.4 MB in the beginning and 138.4 MB in the end (delta: 44.0 MB). Free memory was 64.1 MB in the beginning and 84.8 MB in the end (delta: -20.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:03,117 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 94.4 MB. Free memory is still 50.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:08:03,118 INFO L168 Benchmark]: CACSL2BoogieTranslator took 368.91 ms. Allocated memory is still 94.4 MB. Free memory was 63.9 MB in the beginning and 70.6 MB in the end (delta: -6.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:03,119 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.57 ms. Allocated memory is still 94.4 MB. Free memory was 70.6 MB in the beginning and 69.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:03,120 INFO L168 Benchmark]: Boogie Preprocessor took 53.59 ms. Allocated memory is still 94.4 MB. Free memory was 69.1 MB in the beginning and 67.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:03,121 INFO L168 Benchmark]: RCFGBuilder took 811.50 ms. Allocated memory was 94.4 MB in the beginning and 138.4 MB in the end (delta: 44.0 MB). Free memory was 67.6 MB in the beginning and 108.5 MB in the end (delta: -40.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:03,122 INFO L168 Benchmark]: TraceAbstraction took 478.97 ms. Allocated memory is still 138.4 MB. Free memory was 107.9 MB in the beginning and 85.4 MB in the end (delta: 22.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:03,122 INFO L168 Benchmark]: Witness Printer took 4.84 ms. Allocated memory is still 138.4 MB. Free memory is still 84.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:08:03,126 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 94.4 MB. Free memory is still 50.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 368.91 ms. Allocated memory is still 94.4 MB. Free memory was 63.9 MB in the beginning and 70.6 MB in the end (delta: -6.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.57 ms. Allocated memory is still 94.4 MB. Free memory was 70.6 MB in the beginning and 69.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.59 ms. Allocated memory is still 94.4 MB. Free memory was 69.1 MB in the beginning and 67.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 811.50 ms. Allocated memory was 94.4 MB in the beginning and 138.4 MB in the end (delta: 44.0 MB). Free memory was 67.6 MB in the beginning and 108.5 MB in the end (delta: -40.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 478.97 ms. Allocated memory is still 138.4 MB. Free memory was 107.9 MB in the beginning and 85.4 MB in the end (delta: 22.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 4.84 ms. Allocated memory is still 138.4 MB. Free memory is still 84.8 MB. 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 someBinaryFLOATComparisonOperation at line 59, overapproximation of someBinaryArithmeticFLOAToperation at line 46, overapproximation of bitwiseAnd at line 23. Possible FailurePath: [L13] static const float huge_ceil = 1.0e30; [L68] float x = 0.0f / 0.0f; [L16] __int32_t i0, j0; [L17] __uint32_t i, ix; VAL [huge_ceil=1000000000000000000000000000000] [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] ix = (i0 & 0x7fffffff) [L24] j0 = (ix >> 23) - 0x7f VAL [huge_ceil=1000000000000000000000000000000] [L25] COND FALSE !(j0 < 23) [L45] COND FALSE !(!((ix) < 0x7f800000L)) [L48] return x; VAL [huge_ceil=1000000000000000000000000000000] [L70] float res = ceil_float(x); [L59] return x != x; [L73] COND TRUE !isnan_float(res) [L3] __assert_fail("0", "float_req_bl_1091.c", 3, "reach_error") VAL [huge_ceil=1000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 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: 18 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=16occurred 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, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 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 [2020-11-22 13:08:05,615 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:08:05,618 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:08:05,659 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:08:05,660 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:08:05,665 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:08:05,667 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:08:05,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:08:05,674 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:08:05,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:08:05,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:08:05,688 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:08:05,688 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:08:05,689 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:08:05,690 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:08:05,692 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:08:05,693 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:08:05,693 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:08:05,695 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:08:05,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:08:05,699 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:08:05,701 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:08:05,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:08:05,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:08:05,706 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:08:05,706 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:08:05,707 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:08:05,708 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:08:05,708 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:08:05,709 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:08:05,710 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:08:05,710 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:08:05,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:08:05,712 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:08:05,713 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:08:05,714 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:08:05,714 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:08:05,715 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:08:05,715 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:08:05,716 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:08:05,716 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:08:05,717 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d664be08-52b4-4adc-8b59-fe506cd09d4e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-22 13:08:05,761 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:08:05,761 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:08:05,763 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:08:05,763 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:08:05,763 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:08:05,763 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:08:05,763 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:08:05,764 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:08:05,764 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:08:05,765 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:08:05,766 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:08:05,766 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:08:05,767 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:08:05,767 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:08:05,767 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:08:05,767 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:08:05,767 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:08:05,767 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-22 13:08:05,768 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-22 13:08:05,768 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:08:05,768 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:08:05,768 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:08:05,768 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:08:05,769 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:08:05,769 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-22 13:08:05,769 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:08:05,769 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:08:05,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:08:05,770 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:08:05,770 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:08:05,770 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:08:05,770 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-22 13:08:05,770 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-22 13:08:05,770 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:08:05,771 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:08:05,771 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:08:05,771 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_d664be08-52b4-4adc-8b59-fe506cd09d4e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d664be08-52b4-4adc-8b59-fe506cd09d4e/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29db272de411ec8ad8f5c2bb2f7576cb66abdc0d [2020-11-22 13:08:06,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:08:06,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:08:06,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:08:06,146 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:08:06,147 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:08:06,148 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d664be08-52b4-4adc-8b59-fe506cd09d4e/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2020-11-22 13:08:06,217 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d664be08-52b4-4adc-8b59-fe506cd09d4e/bin/utaipan/data/e16c32d3a/1f316610060e45cbafa19de6dd4dc467/FLAG14ffa51ef [2020-11-22 13:08:06,751 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:08:06,752 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d664be08-52b4-4adc-8b59-fe506cd09d4e/sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2020-11-22 13:08:06,759 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d664be08-52b4-4adc-8b59-fe506cd09d4e/bin/utaipan/data/e16c32d3a/1f316610060e45cbafa19de6dd4dc467/FLAG14ffa51ef [2020-11-22 13:08:07,112 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d664be08-52b4-4adc-8b59-fe506cd09d4e/bin/utaipan/data/e16c32d3a/1f316610060e45cbafa19de6dd4dc467 [2020-11-22 13:08:07,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:08:07,118 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:08:07,121 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:08:07,121 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:08:07,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:08:07,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:08:07" (1/1) ... [2020-11-22 13:08:07,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ac43a2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:07, skipping insertion in model container [2020-11-22 13:08:07,136 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:08:07" (1/1) ... [2020-11-22 13:08:07,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:08:07,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:08:07,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:08:07,357 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:08:07,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:08:07,433 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:08:07,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:07 WrapperNode [2020-11-22 13:08:07,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:08:07,441 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:08:07,441 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:08:07,441 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:08:07,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:07" (1/1) ... [2020-11-22 13:08:07,527 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:07" (1/1) ... [2020-11-22 13:08:07,560 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:08:07,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:08:07,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:08:07,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:08:07,570 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:07" (1/1) ... [2020-11-22 13:08:07,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:07" (1/1) ... [2020-11-22 13:08:07,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:07" (1/1) ... [2020-11-22 13:08:07,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:07" (1/1) ... [2020-11-22 13:08:07,608 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:07" (1/1) ... [2020-11-22 13:08:07,612 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:07" (1/1) ... [2020-11-22 13:08:07,615 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:07" (1/1) ... [2020-11-22 13:08:07,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:08:07,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:08:07,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:08:07,620 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:08:07,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d664be08-52b4-4adc-8b59-fe506cd09d4e/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 [2020-11-22 13:08:07,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-22 13:08:07,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:08:07,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-11-22 13:08:07,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-22 13:08:07,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:08:07,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:08:07,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-22 13:08:07,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-22 13:08:07,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 13:08:08,573 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:08:08,573 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-22 13:08:08,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:08:08 BoogieIcfgContainer [2020-11-22 13:08:08,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:08:08,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:08:08,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:08:08,579 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:08:08,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:08:07" (1/3) ... [2020-11-22 13:08:08,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16dad3db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:08:08, skipping insertion in model container [2020-11-22 13:08:08,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:07" (2/3) ... [2020-11-22 13:08:08,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16dad3db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:08:08, skipping insertion in model container [2020-11-22 13:08:08,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:08:08" (3/3) ... [2020-11-22 13:08:08,583 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1091.c [2020-11-22 13:08:08,594 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:08:08,599 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:08:08,611 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:08:08,635 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:08:08,635 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:08:08,635 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:08:08,635 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:08:08,635 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:08:08,636 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:08:08,636 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:08:08,636 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:08:08,649 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-11-22 13:08:08,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 13:08:08,654 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:08,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:08:08,656 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:08:08,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:08,663 INFO L82 PathProgramCache]: Analyzing trace with hash -2022266355, now seen corresponding path program 1 times [2020-11-22 13:08:08,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:08:08,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1524303702] [2020-11-22 13:08:08,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d664be08-52b4-4adc-8b59-fe506cd09d4e/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 [2020-11-22 13:08:08,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:08,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-22 13:08:08,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:08:08,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:08,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:08:08,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:08,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1524303702] [2020-11-22 13:08:08,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:08,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-22 13:08:08,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717968299] [2020-11-22 13:08:08,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 13:08:08,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:08:08,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 13:08:08,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:08:08,899 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-11-22 13:08:08,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:08,916 INFO L93 Difference]: Finished difference Result 51 states and 77 transitions. [2020-11-22 13:08:08,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 13:08:08,918 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-22 13:08:08,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:08,927 INFO L225 Difference]: With dead ends: 51 [2020-11-22 13:08:08,927 INFO L226 Difference]: Without dead ends: 23 [2020-11-22 13:08:08,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:08:08,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-22 13:08:08,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-22 13:08:08,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-22 13:08:08,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2020-11-22 13:08:08,963 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 10 [2020-11-22 13:08:08,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:08,963 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2020-11-22 13:08:08,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 13:08:08,964 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2020-11-22 13:08:08,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 13:08:08,964 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:08,964 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:08:09,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-22 13:08:09,179 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:08:09,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:09,179 INFO L82 PathProgramCache]: Analyzing trace with hash -62606256, now seen corresponding path program 1 times [2020-11-22 13:08:09,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:08:09,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1257445828] [2020-11-22 13:08:09,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d664be08-52b4-4adc-8b59-fe506cd09d4e/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 [2020-11-22 13:08:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:09,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-22 13:08:09,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:08:09,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:09,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:08:09,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:09,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1257445828] [2020-11-22 13:08:09,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:09,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-22 13:08:09,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503206101] [2020-11-22 13:08:09,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-22 13:08:09,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:08:09,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-22 13:08:09,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-22 13:08:09,728 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand 10 states. [2020-11-22 13:08:10,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:10,342 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2020-11-22 13:08:10,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 13:08:10,343 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 11 [2020-11-22 13:08:10,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:10,344 INFO L225 Difference]: With dead ends: 34 [2020-11-22 13:08:10,344 INFO L226 Difference]: Without dead ends: 18 [2020-11-22 13:08:10,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-22 13:08:10,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-22 13:08:10,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-22 13:08:10,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-22 13:08:10,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-11-22 13:08:10,349 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2020-11-22 13:08:10,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:10,349 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-11-22 13:08:10,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-22 13:08:10,351 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-11-22 13:08:10,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-22 13:08:10,352 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:10,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:08:10,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-22 13:08:10,555 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:08:10,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:10,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1612289523, now seen corresponding path program 1 times [2020-11-22 13:08:10,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:08:10,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [601458242] [2020-11-22 13:08:10,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d664be08-52b4-4adc-8b59-fe506cd09d4e/bin/utaipan/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 [2020-11-22 13:08:10,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:10,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-22 13:08:10,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:08:10,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:10,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:08:10,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:10,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [601458242] [2020-11-22 13:08:10,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:10,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-22 13:08:10,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689538033] [2020-11-22 13:08:10,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-22 13:08:10,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:08:10,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-22 13:08:10,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-22 13:08:10,980 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 8 states. [2020-11-22 13:08:11,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:11,178 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-11-22 13:08:11,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 13:08:11,179 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-11-22 13:08:11,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:11,179 INFO L225 Difference]: With dead ends: 18 [2020-11-22 13:08:11,179 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 13:08:11,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-11-22 13:08:11,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 13:08:11,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 13:08:11,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 13:08:11,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 13:08:11,180 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-11-22 13:08:11,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:11,181 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 13:08:11,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-22 13:08:11,181 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 13:08:11,181 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 13:08:11,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-22 13:08:11,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 13:08:11,523 INFO L274 CegarLoopResult]: For program point L27(lines 27 33) no Hoare annotation was computed. [2020-11-22 13:08:11,523 INFO L274 CegarLoopResult]: For program point L73(lines 73 76) no Hoare annotation was computed. [2020-11-22 13:08:11,523 INFO L274 CegarLoopResult]: For program point L36(lines 36 37) no Hoare annotation was computed. [2020-11-22 13:08:11,523 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-22 13:08:11,524 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-22 13:08:11,524 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-22 13:08:11,524 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 13:08:11,524 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-22 13:08:11,524 INFO L274 CegarLoopResult]: For program point L28(lines 28 32) no Hoare annotation was computed. [2020-11-22 13:08:11,524 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-22 13:08:11,524 INFO L277 CegarLoopResult]: At program point L78(lines 61 79) the Hoare annotation is: true [2020-11-22 13:08:11,524 INFO L274 CegarLoopResult]: For program point L45(lines 45 48) no Hoare annotation was computed. [2020-11-22 13:08:11,525 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 13:08:11,525 INFO L274 CegarLoopResult]: For program point L25(lines 25 49) no Hoare annotation was computed. [2020-11-22 13:08:11,525 INFO L274 CegarLoopResult]: For program point L50(lines 50 54) no Hoare annotation was computed. [2020-11-22 13:08:11,525 INFO L274 CegarLoopResult]: For program point L50-1(lines 15 56) no Hoare annotation was computed. [2020-11-22 13:08:11,525 INFO L274 CegarLoopResult]: For program point L50-2(lines 50 54) no Hoare annotation was computed. [2020-11-22 13:08:11,525 INFO L274 CegarLoopResult]: For program point L38(lines 38 42) no Hoare annotation was computed. [2020-11-22 13:08:11,525 INFO L274 CegarLoopResult]: For program point L30(lines 30 32) no Hoare annotation was computed. [2020-11-22 13:08:11,525 INFO L270 CegarLoopResult]: At program point L59(line 59) the Hoare annotation is: (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq |ULTIMATE.start_ceil_float_#res| |ULTIMATE.start_ceil_float_#res|)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_ceil_float_~x))) [2020-11-22 13:08:11,525 INFO L274 CegarLoopResult]: For program point L26(lines 26 43) no Hoare annotation was computed. [2020-11-22 13:08:11,526 INFO L270 CegarLoopResult]: At program point L55(lines 15 56) the Hoare annotation is: (and (not (fp.eq |ULTIMATE.start_ceil_float_#res| |ULTIMATE.start_ceil_float_#res|)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_ceil_float_~x))) [2020-11-22 13:08:11,526 INFO L274 CegarLoopResult]: For program point L18-1(lines 18 22) no Hoare annotation was computed. [2020-11-22 13:08:11,526 INFO L270 CegarLoopResult]: At program point L18-2(lines 18 22) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_ceil_float_~x)) [2020-11-22 13:08:11,526 INFO L274 CegarLoopResult]: For program point L18-3(lines 18 22) no Hoare annotation was computed. [2020-11-22 13:08:11,526 INFO L274 CegarLoopResult]: For program point L39(lines 39 40) no Hoare annotation was computed. [2020-11-22 13:08:11,526 INFO L274 CegarLoopResult]: For program point L39-2(lines 39 40) no Hoare annotation was computed. [2020-11-22 13:08:11,536 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-22 13:08:11,542 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-22 13:08:11,544 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-22 13:08:11,546 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-22 13:08:11,547 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-22 13:08:11,547 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-22 13:08:11,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:08:11 BoogieIcfgContainer [2020-11-22 13:08:11,550 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:08:11,550 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:08:11,551 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:08:11,551 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:08:11,551 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:08:08" (3/4) ... [2020-11-22 13:08:11,554 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 13:08:11,570 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-22 13:08:11,570 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-22 13:08:11,570 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:08:11,571 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:08:11,597 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-11-22 13:08:11,597 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !~fp.eq~FLOAT(\result, \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-11-22 13:08:11,600 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (1bv32 == \result && !~fp.eq~FLOAT(\result, \result)) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-11-22 13:08:11,640 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d664be08-52b4-4adc-8b59-fe506cd09d4e/bin/utaipan/witness.graphml [2020-11-22 13:08:11,640 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:08:11,644 INFO L168 Benchmark]: Toolchain (without parser) took 4523.07 ms. Allocated memory was 48.2 MB in the beginning and 71.3 MB in the end (delta: 23.1 MB). Free memory was 23.7 MB in the beginning and 51.1 MB in the end (delta: -27.4 MB). Peak memory consumption was 17.0 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:11,644 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 48.2 MB. Free memory was 30.2 MB in the beginning and 30.2 MB in the end (delta: 18.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:08:11,645 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.74 ms. Allocated memory is still 48.2 MB. Free memory was 23.5 MB in the beginning and 23.8 MB in the end (delta: -350.8 kB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:11,645 INFO L168 Benchmark]: Boogie Procedure Inliner took 118.95 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.8 MB in the beginning and 41.1 MB in the end (delta: -17.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:11,646 INFO L168 Benchmark]: Boogie Preprocessor took 58.00 ms. Allocated memory is still 58.7 MB. Free memory was 41.1 MB in the beginning and 39.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:08:11,646 INFO L168 Benchmark]: RCFGBuilder took 955.18 ms. Allocated memory is still 58.7 MB. Free memory was 39.5 MB in the beginning and 36.0 MB in the end (delta: 3.5 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:11,649 INFO L168 Benchmark]: TraceAbstraction took 2973.46 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 35.5 MB in the beginning and 30.3 MB in the end (delta: 5.2 MB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:11,649 INFO L168 Benchmark]: Witness Printer took 89.59 ms. Allocated memory is still 71.3 MB. Free memory was 30.3 MB in the beginning and 51.1 MB in the end (delta: -20.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:11,654 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 48.2 MB. Free memory was 30.2 MB in the beginning and 30.2 MB in the end (delta: 18.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 314.74 ms. Allocated memory is still 48.2 MB. Free memory was 23.5 MB in the beginning and 23.8 MB in the end (delta: -350.8 kB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 118.95 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.8 MB in the beginning and 41.1 MB in the end (delta: -17.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.00 ms. Allocated memory is still 58.7 MB. Free memory was 41.1 MB in the beginning and 39.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 955.18 ms. Allocated memory is still 58.7 MB. Free memory was 39.5 MB in the beginning and 36.0 MB in the end (delta: 3.5 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2973.46 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 35.5 MB in the beginning and 30.3 MB in the end (delta: 5.2 MB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. * Witness Printer took 89.59 ms. Allocated memory is still 71.3 MB. Free memory was 30.3 MB in the beginning and 51.1 MB in the end (delta: -20.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant [2020-11-22 13:08:11,666 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-22 13:08:11,667 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 59]: Loop Invariant [2020-11-22 13:08:11,669 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-22 13:08:11,670 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (1bv32 == \result && !~fp.eq~FLOAT(\result, \result)) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 15]: Loop Invariant [2020-11-22 13:08:11,672 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-22 13:08:11,672 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: !~fp.eq~FLOAT(\result, \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 18 SDslu, 65 SDs, 0 SdLazy, 46 SolverSat, 4 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 35 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 5 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 66 ConstructedInterpolants, 11 QuantifiedInterpolants, 2710 SizeOfPredicates, 19 NumberOfNonLiveVariables, 146 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...