./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.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_d760b3e8-d7be-490b-bf06-ea6761804a10/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d760b3e8-d7be-490b-bf06-ea6761804a10/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d760b3e8-d7be-490b-bf06-ea6761804a10/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d760b3e8-d7be-490b-bf06-ea6761804a10/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d760b3e8-d7be-490b-bf06-ea6761804a10/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d760b3e8-d7be-490b-bf06-ea6761804a10/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 94bd51eb56827c6c266b6ed4f7ea5182fc2e875c ............................................................................................................................................................................................................................................................................................................. 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_d760b3e8-d7be-490b-bf06-ea6761804a10/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d760b3e8-d7be-490b-bf06-ea6761804a10/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d760b3e8-d7be-490b-bf06-ea6761804a10/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d760b3e8-d7be-490b-bf06-ea6761804a10/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d760b3e8-d7be-490b-bf06-ea6761804a10/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d760b3e8-d7be-490b-bf06-ea6761804a10/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 94bd51eb56827c6c266b6ed4f7ea5182fc2e875c ............................................................................................................................................................................................................................................................................................................................................................................................................................ 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 12:48:55,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:48:55,926 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:48:55,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:48:56,000 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:48:56,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:48:56,005 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:48:56,008 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:48:56,010 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:48:56,012 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:48:56,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:48:56,016 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:48:56,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:48:56,018 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:48:56,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:48:56,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:48:56,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:48:56,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:48:56,028 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:48:56,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:48:56,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:48:56,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:48:56,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:48:56,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:48:56,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:48:56,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:48:56,050 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:48:56,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:48:56,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:48:56,059 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:48:56,059 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:48:56,060 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:48:56,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:48:56,064 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:48:56,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:48:56,067 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:48:56,069 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:48:56,069 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:48:56,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:48:56,073 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:48:56,074 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:48:56,077 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d760b3e8-d7be-490b-bf06-ea6761804a10/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:48:56,127 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:48:56,127 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:48:56,129 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:48:56,129 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:48:56,129 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:48:56,130 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:48:56,130 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:48:56,130 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:48:56,130 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:48:56,131 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:48:56,132 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:48:56,132 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:48:56,133 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:48:56,133 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:48:56,133 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:48:56,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:48:56,134 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:48:56,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:48:56,135 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:48:56,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:48:56,135 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:48:56,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:48:56,136 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:48:56,136 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:48:56,137 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:48:56,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:48:56,137 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:48:56,137 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:48:56,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:48:56,138 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:48:56,138 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:48:56,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:48:56,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:48:56,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:48:56,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:48:56,140 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:48:56,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:48:56,140 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:48:56,141 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:48:56,141 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:48:56,141 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_d760b3e8-d7be-490b-bf06-ea6761804a10/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d760b3e8-d7be-490b-bf06-ea6761804a10/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94bd51eb56827c6c266b6ed4f7ea5182fc2e875c [2020-11-22 12:48:56,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:48:56,491 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:48:56,499 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:48:56,501 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:48:56,502 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:48:56,503 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d760b3e8-d7be-490b-bf06-ea6761804a10/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2020-11-22 12:48:56,601 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d760b3e8-d7be-490b-bf06-ea6761804a10/bin/utaipan/data/47d2bd263/7c7acc435f8e45f8aa31c83154e87e8f/FLAGb8368f7d5 [2020-11-22 12:48:57,151 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:48:57,152 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d760b3e8-d7be-490b-bf06-ea6761804a10/sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2020-11-22 12:48:57,164 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d760b3e8-d7be-490b-bf06-ea6761804a10/bin/utaipan/data/47d2bd263/7c7acc435f8e45f8aa31c83154e87e8f/FLAGb8368f7d5 [2020-11-22 12:48:57,502 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d760b3e8-d7be-490b-bf06-ea6761804a10/bin/utaipan/data/47d2bd263/7c7acc435f8e45f8aa31c83154e87e8f [2020-11-22 12:48:57,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:48:57,506 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:48:57,508 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:48:57,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:48:57,512 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:48:57,513 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:48:57" (1/1) ... [2020-11-22 12:48:57,516 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25caca8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:57, skipping insertion in model container [2020-11-22 12:48:57,516 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:48:57" (1/1) ... [2020-11-22 12:48:57,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:48:57,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:48:57,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:48:57,788 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:48:57,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:48:57,843 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:48:57,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:57 WrapperNode [2020-11-22 12:48:57,844 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:48:57,845 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:48:57,845 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:48:57,846 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:48:57,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:57" (1/1) ... [2020-11-22 12:48:57,866 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:57" (1/1) ... [2020-11-22 12:48:57,896 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:48:57,897 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:48:57,897 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:48:57,898 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:48:57,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:57" (1/1) ... [2020-11-22 12:48:57,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:57" (1/1) ... [2020-11-22 12:48:57,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:57" (1/1) ... [2020-11-22 12:48:57,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:57" (1/1) ... [2020-11-22 12:48:57,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:57" (1/1) ... [2020-11-22 12:48:57,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:57" (1/1) ... [2020-11-22 12:48:57,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:57" (1/1) ... [2020-11-22 12:48:57,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:48:57,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:48:57,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:48:57,939 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:48:57,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d760b3e8-d7be-490b-bf06-ea6761804a10/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 12:48:58,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:48:58,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:48:58,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-22 12:48:58,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-22 12:48:58,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-22 12:48:58,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:48:58,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:48:58,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-22 12:48:58,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 12:48:58,989 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:48:58,989 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-22 12:48:58,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:48:58 BoogieIcfgContainer [2020-11-22 12:48:58,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:48:58,994 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:48:58,995 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:48:58,999 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:48:58,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:48:57" (1/3) ... [2020-11-22 12:48:59,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf13c65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:48:59, skipping insertion in model container [2020-11-22 12:48:59,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:57" (2/3) ... [2020-11-22 12:48:59,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf13c65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:48:59, skipping insertion in model container [2020-11-22 12:48:59,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:48:58" (3/3) ... [2020-11-22 12:48:59,003 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2020-11-22 12:48:59,017 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:48:59,022 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:48:59,037 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 12:48:59,065 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:48:59,066 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:48:59,066 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:48:59,066 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:48:59,066 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:48:59,067 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:48:59,067 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:48:59,070 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:48:59,087 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-11-22 12:48:59,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-22 12:48:59,098 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:48:59,098 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:48:59,099 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:48:59,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:48:59,107 INFO L82 PathProgramCache]: Analyzing trace with hash 271173404, now seen corresponding path program 1 times [2020-11-22 12:48:59,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:48:59,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560116459] [2020-11-22 12:48:59,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:48:59,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:48:59,253 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 12:48:59,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560116459] [2020-11-22 12:48:59,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:48:59,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:48:59,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728117643] [2020-11-22 12:48:59,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 12:48:59,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:48:59,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 12:48:59,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 12:48:59,281 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2020-11-22 12:48:59,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:48:59,315 INFO L93 Difference]: Finished difference Result 43 states and 67 transitions. [2020-11-22 12:48:59,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 12:48:59,317 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-11-22 12:48:59,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:48:59,344 INFO L225 Difference]: With dead ends: 43 [2020-11-22 12:48:59,356 INFO L226 Difference]: Without dead ends: 20 [2020-11-22 12:48:59,360 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 12:48:59,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-22 12:48:59,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-11-22 12:48:59,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-22 12:48:59,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2020-11-22 12:48:59,410 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 9 [2020-11-22 12:48:59,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:48:59,411 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2020-11-22 12:48:59,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 12:48:59,411 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2020-11-22 12:48:59,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 12:48:59,412 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:48:59,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:48:59,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:48:59,414 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:48:59,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:48:59,418 INFO L82 PathProgramCache]: Analyzing trace with hash -710518883, now seen corresponding path program 1 times [2020-11-22 12:48:59,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:48:59,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045605111] [2020-11-22 12:48:59,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:48:59,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:48:59,491 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:48:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:48:59,536 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:48:59,584 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 12:48:59,585 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 12:48:59,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:48:59,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:48:59 BoogieIcfgContainer [2020-11-22 12:48:59,637 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:48:59,639 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:48:59,639 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:48:59,640 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:48:59,640 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:48:58" (3/4) ... [2020-11-22 12:48:59,645 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-22 12:48:59,645 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:48:59,651 INFO L168 Benchmark]: Toolchain (without parser) took 2140.82 ms. Allocated memory was 104.9 MB in the beginning and 127.9 MB in the end (delta: 23.1 MB). Free memory was 76.6 MB in the beginning and 73.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 24.3 MB. Max. memory is 16.1 GB. [2020-11-22 12:48:59,652 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 104.9 MB. Free memory is still 66.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:48:59,653 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.04 ms. Allocated memory is still 104.9 MB. Free memory was 76.6 MB in the beginning and 80.4 MB in the end (delta: -3.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:48:59,655 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.30 ms. Allocated memory is still 104.9 MB. Free memory was 80.4 MB in the beginning and 78.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:48:59,656 INFO L168 Benchmark]: Boogie Preprocessor took 40.28 ms. Allocated memory is still 104.9 MB. Free memory was 78.6 MB in the beginning and 76.9 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:48:59,658 INFO L168 Benchmark]: RCFGBuilder took 1054.16 ms. Allocated memory was 104.9 MB in the beginning and 127.9 MB in the end (delta: 23.1 MB). Free memory was 76.9 MB in the beginning and 96.5 MB in the end (delta: -19.5 MB). Peak memory consumption was 35.8 MB. Max. memory is 16.1 GB. [2020-11-22 12:48:59,659 INFO L168 Benchmark]: TraceAbstraction took 643.21 ms. Allocated memory is still 127.9 MB. Free memory was 95.9 MB in the beginning and 74.0 MB in the end (delta: 21.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:48:59,660 INFO L168 Benchmark]: Witness Printer took 7.52 ms. Allocated memory is still 127.9 MB. Free memory was 74.0 MB in the beginning and 73.5 MB in the end (delta: 562.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:48:59,672 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 104.9 MB. Free memory is still 66.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 336.04 ms. Allocated memory is still 104.9 MB. Free memory was 76.6 MB in the beginning and 80.4 MB in the end (delta: -3.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.30 ms. Allocated memory is still 104.9 MB. Free memory was 80.4 MB in the beginning and 78.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.28 ms. Allocated memory is still 104.9 MB. Free memory was 78.6 MB in the beginning and 76.9 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1054.16 ms. Allocated memory was 104.9 MB in the beginning and 127.9 MB in the end (delta: 23.1 MB). Free memory was 76.9 MB in the beginning and 96.5 MB in the end (delta: -19.5 MB). Peak memory consumption was 35.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 643.21 ms. Allocated memory is still 127.9 MB. Free memory was 95.9 MB in the beginning and 74.0 MB in the end (delta: 21.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Witness Printer took 7.52 ms. Allocated memory is still 127.9 MB. Free memory was 74.0 MB in the beginning and 73.5 MB in the end (delta: 562.3 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 someUnaryDOUBLEoperation at line 100, overapproximation of bitwiseAnd at line 27, overapproximation of someBinaryArithmeticDOUBLEoperation at line 51, overapproximation of someBinaryDOUBLEComparisonOperation at line 104. Possible FailurePath: [L16] static const double huge_floor = 1.0e300; [L100] double x = -0.0; [L19] __int32_t i0, i1, j0; [L20] __uint32_t i, j; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (i0) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (i1) = ew_u.parts.lsw [L27] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L28] COND FALSE !(j0 < 20) VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L49] COND TRUE j0 > 51 [L50] COND FALSE !(j0 == 0x400) [L53] return x; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L101] double res = floor_double(x); [L104] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L104] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L3] __assert_fail("0", "double_req_bl_1052c.c", 3, "reach_error") VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 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: 27 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 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 12:49:02,724 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:49:02,727 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:49:02,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:49:02,773 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:49:02,779 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:49:02,783 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:49:02,788 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:49:02,793 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:49:02,800 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:49:02,802 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:49:02,808 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:49:02,809 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:49:02,816 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:49:02,818 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:49:02,820 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:49:02,822 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:49:02,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:49:02,833 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:49:02,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:49:02,845 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:49:02,847 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:49:02,857 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:49:02,858 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:49:02,863 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:49:02,870 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:49:02,870 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:49:02,872 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:49:02,874 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:49:02,875 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:49:02,876 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:49:02,877 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:49:02,880 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:49:02,881 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:49:02,883 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:49:02,883 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:49:02,885 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:49:02,885 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:49:02,885 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:49:02,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:49:02,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:49:02,890 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d760b3e8-d7be-490b-bf06-ea6761804a10/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-22 12:49:02,935 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:49:02,935 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:49:02,938 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:49:02,938 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:49:02,939 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:49:02,939 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:49:02,939 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:49:02,940 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:49:02,940 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:49:02,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:49:02,943 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:49:02,944 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:49:02,944 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:49:02,944 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:49:02,944 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:49:02,945 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:49:02,945 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:49:02,945 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-22 12:49:02,945 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-22 12:49:02,946 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:49:02,946 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:49:02,946 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:49:02,947 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:49:02,947 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:49:02,947 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-22 12:49:02,947 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:49:02,948 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:49:02,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:49:02,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:49:02,949 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:49:02,949 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:49:02,949 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-22 12:49:02,949 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-22 12:49:02,950 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:49:02,950 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:49:02,950 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:49:02,951 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_d760b3e8-d7be-490b-bf06-ea6761804a10/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d760b3e8-d7be-490b-bf06-ea6761804a10/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94bd51eb56827c6c266b6ed4f7ea5182fc2e875c [2020-11-22 12:49:03,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:49:03,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:49:03,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:49:03,522 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:49:03,523 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:49:03,524 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d760b3e8-d7be-490b-bf06-ea6761804a10/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2020-11-22 12:49:03,614 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d760b3e8-d7be-490b-bf06-ea6761804a10/bin/utaipan/data/44b352ac8/3e20d8504d6d4b84b421d5a88f9f9b57/FLAG13554ec14 [2020-11-22 12:49:04,351 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:49:04,353 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d760b3e8-d7be-490b-bf06-ea6761804a10/sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2020-11-22 12:49:04,363 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d760b3e8-d7be-490b-bf06-ea6761804a10/bin/utaipan/data/44b352ac8/3e20d8504d6d4b84b421d5a88f9f9b57/FLAG13554ec14 [2020-11-22 12:49:04,673 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d760b3e8-d7be-490b-bf06-ea6761804a10/bin/utaipan/data/44b352ac8/3e20d8504d6d4b84b421d5a88f9f9b57 [2020-11-22 12:49:04,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:49:04,678 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:49:04,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:49:04,681 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:49:04,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:49:04,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:49:04" (1/1) ... [2020-11-22 12:49:04,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b270d92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:04, skipping insertion in model container [2020-11-22 12:49:04,699 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:49:04" (1/1) ... [2020-11-22 12:49:04,708 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:49:04,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:49:04,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:49:04,980 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:49:05,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:49:05,135 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:49:05,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:05 WrapperNode [2020-11-22 12:49:05,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:49:05,164 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:49:05,165 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:49:05,165 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:49:05,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:05" (1/1) ... [2020-11-22 12:49:05,207 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:05" (1/1) ... [2020-11-22 12:49:05,254 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:49:05,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:49:05,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:49:05,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:49:05,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:05" (1/1) ... [2020-11-22 12:49:05,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:05" (1/1) ... [2020-11-22 12:49:05,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:05" (1/1) ... [2020-11-22 12:49:05,294 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:05" (1/1) ... [2020-11-22 12:49:05,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:05" (1/1) ... [2020-11-22 12:49:05,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:05" (1/1) ... [2020-11-22 12:49:05,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:05" (1/1) ... [2020-11-22 12:49:05,334 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:49:05,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:49:05,335 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:49:05,335 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:49:05,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d760b3e8-d7be-490b-bf06-ea6761804a10/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 12:49:05,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-22 12:49:05,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-22 12:49:05,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-22 12:49:05,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:49:05,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-22 12:49:05,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:49:05,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:49:05,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-22 12:49:05,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 12:49:07,280 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:49:07,280 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-22 12:49:07,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:49:07 BoogieIcfgContainer [2020-11-22 12:49:07,282 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:49:07,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:49:07,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:49:07,288 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:49:07,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:49:04" (1/3) ... [2020-11-22 12:49:07,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b226ffe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:49:07, skipping insertion in model container [2020-11-22 12:49:07,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:05" (2/3) ... [2020-11-22 12:49:07,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b226ffe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:49:07, skipping insertion in model container [2020-11-22 12:49:07,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:49:07" (3/3) ... [2020-11-22 12:49:07,292 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2020-11-22 12:49:07,305 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:49:07,310 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:49:07,325 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 12:49:07,355 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:49:07,355 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:49:07,355 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:49:07,355 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:49:07,356 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:49:07,356 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:49:07,356 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:49:07,356 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:49:07,372 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-11-22 12:49:07,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 12:49:07,379 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:49:07,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:49:07,380 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:49:07,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:49:07,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1930029915, now seen corresponding path program 1 times [2020-11-22 12:49:07,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:49:07,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1196143333] [2020-11-22 12:49:07,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d760b3e8-d7be-490b-bf06-ea6761804a10/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 12:49:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:49:07,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-22 12:49:07,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:49:07,556 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 12:49:07,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:49:07,561 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 12:49:07,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1196143333] [2020-11-22 12:49:07,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:49:07,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-22 12:49:07,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021979824] [2020-11-22 12:49:07,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 12:49:07,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:49:07,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 12:49:07,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 12:49:07,588 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2020-11-22 12:49:07,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:49:07,628 INFO L93 Difference]: Finished difference Result 75 states and 119 transitions. [2020-11-22 12:49:07,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 12:49:07,630 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-22 12:49:07,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:49:07,641 INFO L225 Difference]: With dead ends: 75 [2020-11-22 12:49:07,642 INFO L226 Difference]: Without dead ends: 35 [2020-11-22 12:49:07,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 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 12:49:07,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-22 12:49:07,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-11-22 12:49:07,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-22 12:49:07,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2020-11-22 12:49:07,685 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 50 transitions. Word has length 11 [2020-11-22 12:49:07,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:49:07,686 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 50 transitions. [2020-11-22 12:49:07,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 12:49:07,686 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2020-11-22 12:49:07,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-22 12:49:07,687 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:49:07,688 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:49:07,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-22 12:49:07,911 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:49:07,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:49:07,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1310108990, now seen corresponding path program 1 times [2020-11-22 12:49:07,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:49:07,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1515640703] [2020-11-22 12:49:07,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d760b3e8-d7be-490b-bf06-ea6761804a10/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 12:49:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:49:08,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-22 12:49:08,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:49:08,360 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 12:49:08,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:49:08,494 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 12:49:08,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1515640703] [2020-11-22 12:49:08,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:49:08,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-22 12:49:08,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309483584] [2020-11-22 12:49:08,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-22 12:49:08,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:49:08,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-22 12:49:08,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-22 12:49:08,499 INFO L87 Difference]: Start difference. First operand 35 states and 50 transitions. Second operand 8 states. [2020-11-22 12:49:09,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:49:09,205 INFO L93 Difference]: Finished difference Result 59 states and 74 transitions. [2020-11-22 12:49:09,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-22 12:49:09,208 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-11-22 12:49:09,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:49:09,209 INFO L225 Difference]: With dead ends: 59 [2020-11-22 12:49:09,211 INFO L226 Difference]: Without dead ends: 34 [2020-11-22 12:49:09,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-11-22 12:49:09,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-22 12:49:09,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 22. [2020-11-22 12:49:09,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-22 12:49:09,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-11-22 12:49:09,230 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 12 [2020-11-22 12:49:09,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:49:09,231 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-11-22 12:49:09,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-22 12:49:09,231 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-11-22 12:49:09,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-22 12:49:09,232 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:49:09,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:49:09,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-22 12:49:09,457 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:49:09,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:49:09,458 INFO L82 PathProgramCache]: Analyzing trace with hash -649381144, now seen corresponding path program 1 times [2020-11-22 12:49:09,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:49:09,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2075688436] [2020-11-22 12:49:09,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d760b3e8-d7be-490b-bf06-ea6761804a10/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 12:49:09,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:49:09,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-22 12:49:09,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:49:09,780 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 12:49:09,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:49:10,735 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2020-11-22 12:49:11,071 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 12:49:11,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2075688436] [2020-11-22 12:49:11,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:49:11,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-22 12:49:11,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40471204] [2020-11-22 12:49:11,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 12:49:11,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:49:11,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 12:49:11,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:49:11,074 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 6 states. [2020-11-22 12:49:11,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:49:11,494 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2020-11-22 12:49:11,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:49:11,503 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-22 12:49:11,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:49:11,504 INFO L225 Difference]: With dead ends: 34 [2020-11-22 12:49:11,504 INFO L226 Difference]: Without dead ends: 22 [2020-11-22 12:49:11,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:49:11,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-22 12:49:11,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-11-22 12:49:11,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-22 12:49:11,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-11-22 12:49:11,511 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 15 [2020-11-22 12:49:11,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:49:11,511 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-11-22 12:49:11,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 12:49:11,512 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-11-22 12:49:11,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-22 12:49:11,512 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:49:11,513 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:49:11,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-22 12:49:11,725 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:49:11,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:49:11,726 INFO L82 PathProgramCache]: Analyzing trace with hash 461150674, now seen corresponding path program 1 times [2020-11-22 12:49:11,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:49:11,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [292471477] [2020-11-22 12:49:11,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d760b3e8-d7be-490b-bf06-ea6761804a10/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-22 12:49:12,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:49:12,125 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:49:12,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:49:12,389 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:49:12,474 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-22 12:49:12,474 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 12:49:12,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-22 12:49:12,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:49:12 BoogieIcfgContainer [2020-11-22 12:49:12,724 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:49:12,725 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:49:12,725 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:49:12,726 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:49:12,726 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:49:07" (3/4) ... [2020-11-22 12:49:12,729 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 12:49:12,827 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d760b3e8-d7be-490b-bf06-ea6761804a10/bin/utaipan/witness.graphml [2020-11-22 12:49:12,828 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:49:12,830 INFO L168 Benchmark]: Toolchain (without parser) took 8150.54 ms. Allocated memory was 71.3 MB in the beginning and 90.2 MB in the end (delta: 18.9 MB). Free memory was 50.5 MB in the beginning and 60.3 MB in the end (delta: -9.8 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. [2020-11-22 12:49:12,830 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 50.3 MB. Free memory is still 31.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:49:12,831 INFO L168 Benchmark]: CACSL2BoogieTranslator took 481.89 ms. Allocated memory is still 71.3 MB. Free memory was 50.3 MB in the beginning and 55.2 MB in the end (delta: -4.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-22 12:49:12,832 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.01 ms. Allocated memory is still 71.3 MB. Free memory was 55.0 MB in the beginning and 53.4 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:49:12,833 INFO L168 Benchmark]: Boogie Preprocessor took 76.89 ms. Allocated memory is still 71.3 MB. Free memory was 53.4 MB in the beginning and 51.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:49:12,834 INFO L168 Benchmark]: RCFGBuilder took 1947.14 ms. Allocated memory is still 71.3 MB. Free memory was 51.4 MB in the beginning and 49.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:49:12,835 INFO L168 Benchmark]: TraceAbstraction took 5440.12 ms. Allocated memory was 71.3 MB in the beginning and 90.2 MB in the end (delta: 18.9 MB). Free memory was 48.3 MB in the beginning and 63.1 MB in the end (delta: -14.7 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:49:12,836 INFO L168 Benchmark]: Witness Printer took 102.77 ms. Allocated memory is still 90.2 MB. Free memory was 63.1 MB in the beginning and 60.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:49:12,840 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 50.3 MB. Free memory is still 31.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 481.89 ms. Allocated memory is still 71.3 MB. Free memory was 50.3 MB in the beginning and 55.2 MB in the end (delta: -4.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 92.01 ms. Allocated memory is still 71.3 MB. Free memory was 55.0 MB in the beginning and 53.4 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 76.89 ms. Allocated memory is still 71.3 MB. Free memory was 53.4 MB in the beginning and 51.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1947.14 ms. Allocated memory is still 71.3 MB. Free memory was 51.4 MB in the beginning and 49.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5440.12 ms. Allocated memory was 71.3 MB in the beginning and 90.2 MB in the end (delta: 18.9 MB). Free memory was 48.3 MB in the beginning and 63.1 MB in the end (delta: -14.7 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Witness Printer took 102.77 ms. Allocated memory is still 90.2 MB. Free memory was 63.1 MB in the beginning and 60.3 MB in the end (delta: 2.8 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: [L16] static const double huge_floor = 1.0e300; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L100] double x = -0.0; [L19] __int32_t i0, i1, j0; [L20] __uint32_t i, j; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (i0) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (i1) = ew_u.parts.lsw [L27] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L28] COND TRUE j0 < 20 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L29] COND TRUE j0 < 0 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L30] COND TRUE huge_floor + x > 0.0 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L31] COND FALSE !(i0 >= 0) VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L33] COND TRUE ((i0 & 0x7fffffff) | i1) != 0 [L34] i0 = 0xbff00000 [L35] i1 = 0 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L73] ieee_double_shape_type iw_u; [L74] iw_u.parts.msw = (i0) [L75] iw_u.parts.lsw = (i1) [L76] EXPR iw_u.value [L76] (x) = iw_u.value [L78] return x; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L101] double res = floor_double(x); [L104] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L104] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L3] __assert_fail("0", "double_req_bl_1052c.c", 3, "reach_error") VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 87 SDtfs, 105 SDslu, 59 SDs, 0 SdLazy, 30 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred 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, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 70 ConstructedInterpolants, 5 QuantifiedInterpolants, 3734 SizeOfPredicates, 11 NumberOfNonLiveVariables, 147 ConjunctsInSsa, 15 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 incorrect! Received shutdown request...