./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1300.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_e3314dee-80d6-4409-a44d-f7ede083b0fb/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e3314dee-80d6-4409-a44d-f7ede083b0fb/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e3314dee-80d6-4409-a44d-f7ede083b0fb/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e3314dee-80d6-4409-a44d-f7ede083b0fb/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1300.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e3314dee-80d6-4409-a44d-f7ede083b0fb/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e3314dee-80d6-4409-a44d-f7ede083b0fb/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 6775086e1d92d324fce714cac739cb50ade22067 ........................................................................................................................................................................................................................................................................................................... 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_e3314dee-80d6-4409-a44d-f7ede083b0fb/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e3314dee-80d6-4409-a44d-f7ede083b0fb/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e3314dee-80d6-4409-a44d-f7ede083b0fb/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e3314dee-80d6-4409-a44d-f7ede083b0fb/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1300.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e3314dee-80d6-4409-a44d-f7ede083b0fb/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e3314dee-80d6-4409-a44d-f7ede083b0fb/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 6775086e1d92d324fce714cac739cb50ade22067 .............................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:06:50,880 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:06:50,883 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:06:50,946 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:06:50,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:06:50,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:06:50,954 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:06:50,958 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:06:50,960 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:06:50,966 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:06:50,967 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:06:50,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:06:50,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:06:50,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:06:50,974 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:06:50,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:06:50,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:06:50,981 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:06:50,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:06:50,991 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:06:50,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:06:50,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:06:50,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:06:50,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:06:51,006 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:06:51,006 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:06:51,007 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:06:51,009 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:06:51,010 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:06:51,011 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:06:51,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:06:51,013 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:06:51,015 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:06:51,016 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:06:51,017 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:06:51,018 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:06:51,018 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:06:51,019 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:06:51,019 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:06:51,021 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:06:51,022 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:06:51,024 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e3314dee-80d6-4409-a44d-f7ede083b0fb/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:06:51,063 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:06:51,063 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:06:51,064 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:06:51,065 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:06:51,065 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:06:51,065 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:06:51,065 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:06:51,066 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:06:51,066 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:06:51,066 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:06:51,067 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:06:51,067 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:06:51,068 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:06:51,068 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:06:51,068 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:06:51,069 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:06:51,069 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:06:51,069 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:06:51,070 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:06:51,070 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:06:51,070 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:06:51,070 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:06:51,071 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:06:51,071 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:06:51,071 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:06:51,071 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:06:51,072 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:06:51,072 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:06:51,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:06:51,074 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:06:51,074 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:06:51,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:06:51,074 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:06:51,075 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:06:51,075 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:06:51,075 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:06:51,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:06:51,076 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:06:51,076 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:06:51,076 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:06:51,076 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_e3314dee-80d6-4409-a44d-f7ede083b0fb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e3314dee-80d6-4409-a44d-f7ede083b0fb/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6775086e1d92d324fce714cac739cb50ade22067 [2020-11-22 13:06:51,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:06:51,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:06:51,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:06:51,389 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:06:51,390 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:06:51,390 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e3314dee-80d6-4409-a44d-f7ede083b0fb/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1300.c [2020-11-22 13:06:51,462 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e3314dee-80d6-4409-a44d-f7ede083b0fb/bin/utaipan/data/b36276e31/b455ff3b4e8048a7a7af19ff97d587d6/FLAGc893fa90a [2020-11-22 13:06:51,864 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:06:51,864 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e3314dee-80d6-4409-a44d-f7ede083b0fb/sv-benchmarks/c/float-newlib/double_req_bl_1300.c [2020-11-22 13:06:51,870 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e3314dee-80d6-4409-a44d-f7ede083b0fb/bin/utaipan/data/b36276e31/b455ff3b4e8048a7a7af19ff97d587d6/FLAGc893fa90a [2020-11-22 13:06:52,280 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e3314dee-80d6-4409-a44d-f7ede083b0fb/bin/utaipan/data/b36276e31/b455ff3b4e8048a7a7af19ff97d587d6 [2020-11-22 13:06:52,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:06:52,284 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:06:52,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:06:52,288 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:06:52,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:06:52,293 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:06:52" (1/1) ... [2020-11-22 13:06:52,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5393bed8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:52, skipping insertion in model container [2020-11-22 13:06:52,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:06:52" (1/1) ... [2020-11-22 13:06:52,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:06:52,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:06:52,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:06:52,535 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:06:52,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:06:52,595 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:06:52,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:52 WrapperNode [2020-11-22 13:06:52,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:06:52,597 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:06:52,598 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:06:52,598 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:06:52,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:52" (1/1) ... [2020-11-22 13:06:52,623 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:52" (1/1) ... [2020-11-22 13:06:52,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:06:52,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:06:52,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:06:52,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:06:52,665 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:52" (1/1) ... [2020-11-22 13:06:52,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:52" (1/1) ... [2020-11-22 13:06:52,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:52" (1/1) ... [2020-11-22 13:06:52,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:52" (1/1) ... [2020-11-22 13:06:52,690 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:52" (1/1) ... [2020-11-22 13:06:52,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:52" (1/1) ... [2020-11-22 13:06:52,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:52" (1/1) ... [2020-11-22 13:06:52,708 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:06:52,710 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:06:52,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:06:52,712 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:06:52,713 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e3314dee-80d6-4409-a44d-f7ede083b0fb/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 13:06:52,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:06:52,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:06:52,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-22 13:06:52,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:06:52,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:06:52,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-22 13:06:52,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 13:06:53,320 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:06:53,320 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-22 13:06:53,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:53 BoogieIcfgContainer [2020-11-22 13:06:53,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:06:53,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:06:53,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:06:53,327 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:06:53,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:06:52" (1/3) ... [2020-11-22 13:06:53,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c8053b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:06:53, skipping insertion in model container [2020-11-22 13:06:53,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:52" (2/3) ... [2020-11-22 13:06:53,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c8053b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:06:53, skipping insertion in model container [2020-11-22 13:06:53,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:53" (3/3) ... [2020-11-22 13:06:53,330 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1300.c [2020-11-22 13:06:53,340 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:06:53,344 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:06:53,355 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:06:53,392 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:06:53,392 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:06:53,392 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:06:53,392 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:06:53,393 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:06:53,393 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:06:53,393 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:06:53,393 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:06:53,404 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-11-22 13:06:53,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 13:06:53,439 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:53,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:53,440 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:53,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:53,446 INFO L82 PathProgramCache]: Analyzing trace with hash 279830146, now seen corresponding path program 1 times [2020-11-22 13:06:53,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:53,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856654780] [2020-11-22 13:06:53,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:53,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:53,571 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 13:06:53,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856654780] [2020-11-22 13:06:53,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:53,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:06:53,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262580831] [2020-11-22 13:06:53,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 13:06:53,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:53,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 13:06:53,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:06:53,593 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-11-22 13:06:53,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:53,607 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2020-11-22 13:06:53,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 13:06:53,608 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-22 13:06:53,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:53,613 INFO L225 Difference]: With dead ends: 27 [2020-11-22 13:06:53,614 INFO L226 Difference]: Without dead ends: 11 [2020-11-22 13:06:53,616 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 13:06:53,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-22 13:06:53,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-22 13:06:53,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-22 13:06:53,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2020-11-22 13:06:53,645 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 8 [2020-11-22 13:06:53,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:53,646 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2020-11-22 13:06:53,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 13:06:53,646 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-11-22 13:06:53,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 13:06:53,647 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:53,647 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:53,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:06:53,647 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:53,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:53,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1751055458, now seen corresponding path program 1 times [2020-11-22 13:06:53,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:53,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144570349] [2020-11-22 13:06:53,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:53,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:06:53,777 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:06:53,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:06:53,885 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:06:53,932 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 13:06:53,932 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:06:53,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:06:53,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:06:53 BoogieIcfgContainer [2020-11-22 13:06:53,964 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:06:53,966 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:06:53,966 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:06:53,966 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:06:53,967 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:53" (3/4) ... [2020-11-22 13:06:53,970 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-22 13:06:53,970 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:06:53,973 INFO L168 Benchmark]: Toolchain (without parser) took 1686.77 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 55.9 MB in the beginning and 58.8 MB in the end (delta: -3.0 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:53,975 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 88.1 MB. Free memory was 47.4 MB in the beginning and 47.4 MB in the end (delta: 34.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:06:53,976 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.91 ms. Allocated memory is still 88.1 MB. Free memory was 55.7 MB in the beginning and 64.3 MB in the end (delta: -8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:53,977 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.25 ms. Allocated memory is still 88.1 MB. Free memory was 64.3 MB in the beginning and 62.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:53,978 INFO L168 Benchmark]: Boogie Preprocessor took 53.02 ms. Allocated memory is still 88.1 MB. Free memory was 62.6 MB in the beginning and 61.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:53,979 INFO L168 Benchmark]: RCFGBuilder took 612.64 ms. Allocated memory is still 88.1 MB. Free memory was 61.0 MB in the beginning and 38.2 MB in the end (delta: 22.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:53,980 INFO L168 Benchmark]: TraceAbstraction took 640.84 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 37.9 MB in the beginning and 59.3 MB in the end (delta: -21.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:06:53,980 INFO L168 Benchmark]: Witness Printer took 3.91 ms. Allocated memory is still 107.0 MB. Free memory was 59.3 MB in the beginning and 58.8 MB in the end (delta: 490.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:06:53,994 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 88.1 MB. Free memory was 47.4 MB in the beginning and 47.4 MB in the end (delta: 34.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 309.91 ms. Allocated memory is still 88.1 MB. Free memory was 55.7 MB in the beginning and 64.3 MB in the end (delta: -8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.25 ms. Allocated memory is still 88.1 MB. Free memory was 64.3 MB in the beginning and 62.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.02 ms. Allocated memory is still 88.1 MB. Free memory was 62.6 MB in the beginning and 61.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 612.64 ms. Allocated memory is still 88.1 MB. Free memory was 61.0 MB in the beginning and 38.2 MB in the end (delta: 22.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 640.84 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 37.9 MB in the beginning and 59.3 MB in the end (delta: -21.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 3.91 ms. Allocated memory is still 107.0 MB. Free memory was 59.3 MB in the beginning and 58.8 MB in the end (delta: 490.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 27, overapproximation of bitwiseAnd at line 42, overapproximation of someBinaryDOUBLEComparisonOperation at line 60, overapproximation of to_real at line 57. Possible FailurePath: [L52] double x = __VERIFIER_nondet_double(); [L19] __int32_t hx, lx; [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (hx) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lx) = ew_u.parts.lsw [L26] hx &= 0x7fffffff [L27] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L28] hx = 0x7ff00000 - hx [L29] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L55] !isinf_double(x) && !isnan_double(x) [L33] return x != x; [L55] !isinf_double(x) && !isnan_double(x) [L55] COND TRUE !isinf_double(x) && !isnan_double(x) [L36] __int32_t hx; [L38] ieee_double_shape_type gh_u; [L39] gh_u.value = (x) [L40] EXPR gh_u.parts.msw [L40] (hx) = gh_u.parts.msw [L42] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L57] double res = isfinite_double(x); [L60] COND TRUE res == 0.0 [L3] __assert_fail("0", "double_req_bl_1300.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 14 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=14occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:06:56,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:06:56,338 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:06:56,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:06:56,380 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:06:56,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:06:56,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:06:56,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:06:56,395 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:06:56,401 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:06:56,402 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:06:56,406 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:06:56,407 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:06:56,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:06:56,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:06:56,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:06:56,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:06:56,419 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:06:56,422 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:06:56,429 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:06:56,431 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:06:56,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:06:56,440 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:06:56,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:06:56,443 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:06:56,444 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:06:56,444 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:06:56,445 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:06:56,445 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:06:56,446 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:06:56,447 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:06:56,448 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:06:56,448 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:06:56,449 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:06:56,450 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:06:56,450 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:06:56,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:06:56,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:06:56,451 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:06:56,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:06:56,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:06:56,454 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e3314dee-80d6-4409-a44d-f7ede083b0fb/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-22 13:06:56,480 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:06:56,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:06:56,481 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:06:56,481 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:06:56,481 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:06:56,481 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:06:56,482 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:06:56,482 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:06:56,482 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:06:56,483 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:06:56,483 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:06:56,483 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:06:56,483 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:06:56,483 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:06:56,483 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:06:56,484 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:06:56,484 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:06:56,484 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-22 13:06:56,484 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-22 13:06:56,484 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:06:56,485 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:06:56,485 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:06:56,485 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:06:56,485 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:06:56,485 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-22 13:06:56,486 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:06:56,486 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:06:56,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:06:56,486 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:06:56,486 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:06:56,486 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:06:56,487 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-22 13:06:56,487 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-22 13:06:56,487 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:06:56,487 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:06:56,487 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:06:56,488 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_e3314dee-80d6-4409-a44d-f7ede083b0fb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e3314dee-80d6-4409-a44d-f7ede083b0fb/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6775086e1d92d324fce714cac739cb50ade22067 [2020-11-22 13:06:56,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:06:56,896 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:06:56,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:06:56,902 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:06:56,905 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:06:56,906 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e3314dee-80d6-4409-a44d-f7ede083b0fb/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1300.c [2020-11-22 13:06:56,973 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e3314dee-80d6-4409-a44d-f7ede083b0fb/bin/utaipan/data/9e703d8b5/7c19af8f7a024e3e9d4062bc54a5a37a/FLAGae5df1680 [2020-11-22 13:06:57,537 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:06:57,538 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e3314dee-80d6-4409-a44d-f7ede083b0fb/sv-benchmarks/c/float-newlib/double_req_bl_1300.c [2020-11-22 13:06:57,545 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e3314dee-80d6-4409-a44d-f7ede083b0fb/bin/utaipan/data/9e703d8b5/7c19af8f7a024e3e9d4062bc54a5a37a/FLAGae5df1680 [2020-11-22 13:06:57,994 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e3314dee-80d6-4409-a44d-f7ede083b0fb/bin/utaipan/data/9e703d8b5/7c19af8f7a024e3e9d4062bc54a5a37a [2020-11-22 13:06:57,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:06:57,997 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:06:58,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:06:58,004 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:06:58,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:06:58,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:06:57" (1/1) ... [2020-11-22 13:06:58,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e418482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:58, skipping insertion in model container [2020-11-22 13:06:58,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:06:57" (1/1) ... [2020-11-22 13:06:58,019 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:06:58,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:06:58,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:06:58,286 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:06:58,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:06:58,374 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:06:58,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:58 WrapperNode [2020-11-22 13:06:58,374 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:06:58,376 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:06:58,376 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:06:58,376 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:06:58,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:58" (1/1) ... [2020-11-22 13:06:58,413 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:58" (1/1) ... [2020-11-22 13:06:58,446 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:06:58,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:06:58,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:06:58,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:06:58,456 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:58" (1/1) ... [2020-11-22 13:06:58,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:58" (1/1) ... [2020-11-22 13:06:58,466 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:58" (1/1) ... [2020-11-22 13:06:58,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:58" (1/1) ... [2020-11-22 13:06:58,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:58" (1/1) ... [2020-11-22 13:06:58,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:58" (1/1) ... [2020-11-22 13:06:58,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:58" (1/1) ... [2020-11-22 13:06:58,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:06:58,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:06:58,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:06:58,501 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:06:58,502 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e3314dee-80d6-4409-a44d-f7ede083b0fb/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 13:06:58,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-22 13:06:58,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-22 13:06:58,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:06:58,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-22 13:06:58,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:06:58,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:06:58,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 13:06:59,134 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:06:59,134 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-22 13:06:59,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:59 BoogieIcfgContainer [2020-11-22 13:06:59,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:06:59,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:06:59,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:06:59,142 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:06:59,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:06:57" (1/3) ... [2020-11-22 13:06:59,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62df3cb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:06:59, skipping insertion in model container [2020-11-22 13:06:59,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:58" (2/3) ... [2020-11-22 13:06:59,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62df3cb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:06:59, skipping insertion in model container [2020-11-22 13:06:59,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:59" (3/3) ... [2020-11-22 13:06:59,146 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1300.c [2020-11-22 13:06:59,156 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:06:59,160 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:06:59,172 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:06:59,206 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:06:59,206 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:06:59,206 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:06:59,206 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:06:59,207 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:06:59,207 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:06:59,208 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:06:59,208 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:06:59,221 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-11-22 13:06:59,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-22 13:06:59,226 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:59,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:59,228 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:59,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:59,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1033094394, now seen corresponding path program 1 times [2020-11-22 13:06:59,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:59,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [583094966] [2020-11-22 13:06:59,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e3314dee-80d6-4409-a44d-f7ede083b0fb/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 13:06:59,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:59,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-22 13:06:59,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:59,367 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 13:06:59,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:59,371 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 13:06:59,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [583094966] [2020-11-22 13:06:59,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:59,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-22 13:06:59,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128329617] [2020-11-22 13:06:59,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 13:06:59,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:06:59,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 13:06:59,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:06:59,397 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-11-22 13:06:59,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:59,412 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2020-11-22 13:06:59,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 13:06:59,413 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-11-22 13:06:59,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:59,420 INFO L225 Difference]: With dead ends: 39 [2020-11-22 13:06:59,420 INFO L226 Difference]: Without dead ends: 16 [2020-11-22 13:06:59,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 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 13:06:59,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-22 13:06:59,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-22 13:06:59,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-22 13:06:59,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-11-22 13:06:59,450 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 12 [2020-11-22 13:06:59,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:59,450 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-11-22 13:06:59,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 13:06:59,451 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-11-22 13:06:59,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-22 13:06:59,451 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:59,451 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:59,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-22 13:06:59,669 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:59,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:59,670 INFO L82 PathProgramCache]: Analyzing trace with hash 499625812, now seen corresponding path program 1 times [2020-11-22 13:06:59,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:59,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1836571271] [2020-11-22 13:06:59,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e3314dee-80d6-4409-a44d-f7ede083b0fb/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 13:06:59,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:59,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:06:59,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:59,826 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 13:06:59,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:59,828 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 13:06:59,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1836571271] [2020-11-22 13:06:59,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:59,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-22 13:06:59,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872607821] [2020-11-22 13:06:59,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:06:59,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:06:59,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:06:59,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:06:59,832 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 3 states. [2020-11-22 13:06:59,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:59,871 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2020-11-22 13:06:59,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:06:59,872 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-11-22 13:06:59,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:59,873 INFO L225 Difference]: With dead ends: 24 [2020-11-22 13:06:59,873 INFO L226 Difference]: Without dead ends: 16 [2020-11-22 13:06:59,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:06:59,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-22 13:06:59,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-22 13:06:59,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-22 13:06:59,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-11-22 13:06:59,876 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 14 [2020-11-22 13:06:59,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:59,880 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-11-22 13:06:59,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:06:59,889 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-11-22 13:06:59,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-22 13:06:59,890 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:59,890 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:07:00,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-22 13:07:00,101 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:07:00,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:00,102 INFO L82 PathProgramCache]: Analyzing trace with hash 2210040, now seen corresponding path program 1 times [2020-11-22 13:07:00,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:07:00,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1159806160] [2020-11-22 13:07:00,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e3314dee-80d6-4409-a44d-f7ede083b0fb/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 13:07:00,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:07:00,288 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:07:00,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:07:00,389 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:07:00,447 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-22 13:07:00,447 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:07:00,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-22 13:07:00,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:07:00 BoogieIcfgContainer [2020-11-22 13:07:00,679 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:07:00,679 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:07:00,679 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:07:00,680 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:07:00,680 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:59" (3/4) ... [2020-11-22 13:07:00,682 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 13:07:00,732 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e3314dee-80d6-4409-a44d-f7ede083b0fb/bin/utaipan/witness.graphml [2020-11-22 13:07:00,732 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:07:00,734 INFO L168 Benchmark]: Toolchain (without parser) took 2736.14 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 27.5 MB in the beginning and 30.1 MB in the end (delta: -2.6 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:00,735 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 50.3 MB. Free memory was 33.0 MB in the beginning and 33.0 MB in the end (delta: 37.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:07:00,736 INFO L168 Benchmark]: CACSL2BoogieTranslator took 371.27 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 27.4 MB in the beginning and 45.2 MB in the end (delta: -17.8 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:00,737 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.68 ms. Allocated memory is still 62.9 MB. Free memory was 45.2 MB in the beginning and 43.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:00,737 INFO L168 Benchmark]: Boogie Preprocessor took 51.01 ms. Allocated memory is still 62.9 MB. Free memory was 43.5 MB in the beginning and 42.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:07:00,738 INFO L168 Benchmark]: RCFGBuilder took 636.11 ms. Allocated memory is still 62.9 MB. Free memory was 42.1 MB in the beginning and 43.4 MB in the end (delta: -1.4 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:00,738 INFO L168 Benchmark]: TraceAbstraction took 1539.38 ms. Allocated memory is still 62.9 MB. Free memory was 42.9 MB in the beginning and 32.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:00,739 INFO L168 Benchmark]: Witness Printer took 53.27 ms. Allocated memory is still 62.9 MB. Free memory was 32.6 MB in the beginning and 30.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:00,742 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 50.3 MB. Free memory was 33.0 MB in the beginning and 33.0 MB in the end (delta: 37.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 371.27 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 27.4 MB in the beginning and 45.2 MB in the end (delta: -17.8 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.68 ms. Allocated memory is still 62.9 MB. Free memory was 45.2 MB in the beginning and 43.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.01 ms. Allocated memory is still 62.9 MB. Free memory was 43.5 MB in the beginning and 42.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 636.11 ms. Allocated memory is still 62.9 MB. Free memory was 42.1 MB in the beginning and 43.4 MB in the end (delta: -1.4 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1539.38 ms. Allocated memory is still 62.9 MB. Free memory was 42.9 MB in the beginning and 32.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. * Witness Printer took 53.27 ms. Allocated memory is still 62.9 MB. Free memory was 32.6 MB in the beginning and 30.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L52] double x = __VERIFIER_nondet_double(); [L19] __int32_t hx, lx; [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (hx) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lx) = ew_u.parts.lsw [L26] hx &= 0x7fffffff [L27] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L28] hx = 0x7ff00000 - hx [L29] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L55] !isinf_double(x) && !isnan_double(x) [L33] return x != x; [L55] !isinf_double(x) && !isnan_double(x) [L55] COND TRUE !isinf_double(x) && !isnan_double(x) [L36] __int32_t hx; [L38] ieee_double_shape_type gh_u; [L39] gh_u.value = (x) [L40] EXPR gh_u.parts.msw [L40] (hx) = gh_u.parts.msw [L42] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L57] double res = isfinite_double(x); [L60] COND TRUE res == 0.0 [L3] __assert_fail("0", "double_req_bl_1300.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 37 SDtfs, 0 SDslu, 10 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 606 SizeOfPredicates, 0 NumberOfNonLiveVariables, 101 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...