./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1011a.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_c5ea8288-5c67-4b11-913b-4907a6b5f4a8/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c5ea8288-5c67-4b11-913b-4907a6b5f4a8/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c5ea8288-5c67-4b11-913b-4907a6b5f4a8/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c5ea8288-5c67-4b11-913b-4907a6b5f4a8/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1011a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c5ea8288-5c67-4b11-913b-4907a6b5f4a8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c5ea8288-5c67-4b11-913b-4907a6b5f4a8/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 955f5e50325f07eb13f5ec8c2df35bf16a648c2d ................................................................................................................................................................................................................................................................................................... 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_c5ea8288-5c67-4b11-913b-4907a6b5f4a8/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c5ea8288-5c67-4b11-913b-4907a6b5f4a8/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c5ea8288-5c67-4b11-913b-4907a6b5f4a8/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c5ea8288-5c67-4b11-913b-4907a6b5f4a8/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1011a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c5ea8288-5c67-4b11-913b-4907a6b5f4a8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c5ea8288-5c67-4b11-913b-4907a6b5f4a8/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 955f5e50325f07eb13f5ec8c2df35bf16a648c2d ...................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 02:41:49,950 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:41:49,954 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:41:50,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:41:50,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:41:50,025 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:41:50,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:41:50,049 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:41:50,053 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:41:50,060 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:41:50,061 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:41:50,064 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:41:50,065 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:41:50,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:41:50,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:41:50,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:41:50,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:41:50,076 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:41:50,082 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:41:50,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:41:50,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:41:50,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:41:50,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:41:50,100 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:41:50,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:41:50,110 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:41:50,111 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:41:50,113 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:41:50,114 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:41:50,115 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:41:50,116 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:41:50,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:41:50,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:41:50,121 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:41:50,123 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:41:50,123 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:41:50,124 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:41:50,124 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:41:50,125 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:41:50,126 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:41:50,127 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:41:50,130 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c5ea8288-5c67-4b11-913b-4907a6b5f4a8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 02:41:50,179 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:41:50,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:41:50,182 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:41:50,182 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:41:50,182 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:41:50,183 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:41:50,183 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:41:50,183 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:41:50,183 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:41:50,184 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:41:50,185 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:41:50,185 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:41:50,186 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:41:50,186 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:41:50,186 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:41:50,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:41:50,187 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:41:50,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:41:50,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:41:50,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:41:50,188 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:41:50,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:41:50,189 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:41:50,189 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:41:50,189 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:41:50,190 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:41:50,190 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:41:50,190 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:41:50,191 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:41:50,191 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:41:50,191 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:41:50,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:41:50,192 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:41:50,192 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:41:50,192 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:41:50,193 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:41:50,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:41:50,193 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:41:50,193 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:41:50,194 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:41:50,194 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_c5ea8288-5c67-4b11-913b-4907a6b5f4a8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c5ea8288-5c67-4b11-913b-4907a6b5f4a8/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 955f5e50325f07eb13f5ec8c2df35bf16a648c2d [2020-11-30 02:41:50,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:41:50,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:41:50,596 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:41:50,597 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:41:50,598 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:41:50,599 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c5ea8288-5c67-4b11-913b-4907a6b5f4a8/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1011a.c [2020-11-30 02:41:50,712 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c5ea8288-5c67-4b11-913b-4907a6b5f4a8/bin/utaipan/data/f930b1636/d3b423270104463288e31d84185ae809/FLAG41662a84b [2020-11-30 02:41:51,321 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:41:51,323 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c5ea8288-5c67-4b11-913b-4907a6b5f4a8/sv-benchmarks/c/float-newlib/float_req_bl_1011a.c [2020-11-30 02:41:51,337 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c5ea8288-5c67-4b11-913b-4907a6b5f4a8/bin/utaipan/data/f930b1636/d3b423270104463288e31d84185ae809/FLAG41662a84b [2020-11-30 02:41:51,663 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c5ea8288-5c67-4b11-913b-4907a6b5f4a8/bin/utaipan/data/f930b1636/d3b423270104463288e31d84185ae809 [2020-11-30 02:41:51,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:41:51,669 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:41:51,674 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:41:51,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:41:51,680 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:41:51,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:41:51" (1/1) ... [2020-11-30 02:41:51,685 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a633222 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:41:51, skipping insertion in model container [2020-11-30 02:41:51,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:41:51" (1/1) ... [2020-11-30 02:41:51,693 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:41:51,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:41:51,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:41:51,941 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:41:51,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:41:51,986 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:41:51,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:41:51 WrapperNode [2020-11-30 02:41:51,987 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:41:51,988 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:41:51,988 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:41:51,989 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:41:51,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:41:51" (1/1) ... [2020-11-30 02:41:52,008 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:41:51" (1/1) ... [2020-11-30 02:41:52,031 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:41:52,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:41:52,032 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:41:52,032 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:41:52,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:41:51" (1/1) ... [2020-11-30 02:41:52,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:41:51" (1/1) ... [2020-11-30 02:41:52,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:41:51" (1/1) ... [2020-11-30 02:41:52,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:41:51" (1/1) ... [2020-11-30 02:41:52,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:41:51" (1/1) ... [2020-11-30 02:41:52,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:41:51" (1/1) ... [2020-11-30 02:41:52,062 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:41:51" (1/1) ... [2020-11-30 02:41:52,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:41:52,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:41:52,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:41:52,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:41:52,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:41:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ea8288-5c67-4b11-913b-4907a6b5f4a8/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 [2020-11-30 02:41:52,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:41:52,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:41:52,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-30 02:41:52,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 02:41:52,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-30 02:41:52,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:41:52,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:41:52,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 02:41:52,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 02:41:52,663 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:41:52,663 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-30 02:41:52,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:41:52 BoogieIcfgContainer [2020-11-30 02:41:52,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:41:52,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:41:52,668 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:41:52,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:41:52,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:41:51" (1/3) ... [2020-11-30 02:41:52,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6643ff17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:41:52, skipping insertion in model container [2020-11-30 02:41:52,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:41:51" (2/3) ... [2020-11-30 02:41:52,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6643ff17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:41:52, skipping insertion in model container [2020-11-30 02:41:52,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:41:52" (3/3) ... [2020-11-30 02:41:52,676 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1011a.c [2020-11-30 02:41:52,690 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:41:52,696 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 02:41:52,715 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 02:41:52,762 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:41:52,763 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:41:52,763 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:41:52,763 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:41:52,764 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:41:52,764 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:41:52,765 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:41:52,765 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:41:52,783 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-11-30 02:41:52,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 02:41:52,791 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:41:52,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:41:52,792 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:41:52,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:41:52,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1329731802, now seen corresponding path program 1 times [2020-11-30 02:41:52,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:41:52,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130402261] [2020-11-30 02:41:52,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:41:52,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:41:52,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:41:52,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130402261] [2020-11-30 02:41:52,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:41:52,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:41:53,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060311284] [2020-11-30 02:41:53,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 02:41:53,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:41:53,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 02:41:53,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:41:53,027 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 2 states. [2020-11-30 02:41:53,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:41:53,049 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2020-11-30 02:41:53,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 02:41:53,052 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-30 02:41:53,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:41:53,072 INFO L225 Difference]: With dead ends: 29 [2020-11-30 02:41:53,073 INFO L226 Difference]: Without dead ends: 13 [2020-11-30 02:41:53,081 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 [2020-11-30 02:41:53,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-11-30 02:41:53,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-11-30 02:41:53,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-30 02:41:53,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-11-30 02:41:53,121 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2020-11-30 02:41:53,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:41:53,121 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-11-30 02:41:53,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 02:41:53,122 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-11-30 02:41:53,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 02:41:53,123 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:41:53,123 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:41:53,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:41:53,123 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:41:53,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:41:53,127 INFO L82 PathProgramCache]: Analyzing trace with hash 2070503255, now seen corresponding path program 1 times [2020-11-30 02:41:53,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:41:53,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354315412] [2020-11-30 02:41:53,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:41:53,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:41:53,230 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:41:53,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:41:53,296 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:41:53,351 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-30 02:41:53,351 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 02:41:53,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 02:41:53,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:41:53 BoogieIcfgContainer [2020-11-30 02:41:53,398 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:41:53,399 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:41:53,399 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:41:53,400 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:41:53,400 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:41:52" (3/4) ... [2020-11-30 02:41:53,404 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 02:41:53,404 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:41:53,411 INFO L168 Benchmark]: Toolchain (without parser) took 1737.04 ms. Allocated memory was 127.9 MB in the beginning and 176.2 MB in the end (delta: 48.2 MB). Free memory was 95.7 MB in the beginning and 151.0 MB in the end (delta: -55.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:41:53,413 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 75.5 MB. Free memory was 33.6 MB in the beginning and 33.6 MB in the end (delta: 29.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:41:53,415 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.56 ms. Allocated memory is still 127.9 MB. Free memory was 95.5 MB in the beginning and 103.0 MB in the end (delta: -7.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:41:53,416 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.20 ms. Allocated memory is still 127.9 MB. Free memory was 103.0 MB in the beginning and 101.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:41:53,417 INFO L168 Benchmark]: Boogie Preprocessor took 32.91 ms. Allocated memory is still 127.9 MB. Free memory was 101.3 MB in the beginning and 100.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:41:53,419 INFO L168 Benchmark]: RCFGBuilder took 600.21 ms. Allocated memory is still 127.9 MB. Free memory was 100.1 MB in the beginning and 82.0 MB in the end (delta: 18.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-30 02:41:53,421 INFO L168 Benchmark]: TraceAbstraction took 730.21 ms. Allocated memory was 127.9 MB in the beginning and 176.2 MB in the end (delta: 48.2 MB). Free memory was 81.7 MB in the beginning and 151.3 MB in the end (delta: -69.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:41:53,422 INFO L168 Benchmark]: Witness Printer took 6.28 ms. Allocated memory is still 176.2 MB. Free memory was 151.3 MB in the beginning and 151.0 MB in the end (delta: 362.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:41:53,431 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 75.5 MB. Free memory was 33.6 MB in the beginning and 33.6 MB in the end (delta: 29.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 312.56 ms. Allocated memory is still 127.9 MB. Free memory was 95.5 MB in the beginning and 103.0 MB in the end (delta: -7.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.20 ms. Allocated memory is still 127.9 MB. Free memory was 103.0 MB in the beginning and 101.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.91 ms. Allocated memory is still 127.9 MB. Free memory was 101.3 MB in the beginning and 100.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 600.21 ms. Allocated memory is still 127.9 MB. Free memory was 100.1 MB in the beginning and 82.0 MB in the end (delta: 18.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 730.21 ms. Allocated memory was 127.9 MB in the beginning and 176.2 MB in the end (delta: 48.2 MB). Free memory was 81.7 MB in the beginning and 151.3 MB in the end (delta: -69.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 6.28 ms. Allocated memory is still 176.2 MB. Free memory was 151.3 MB in the beginning and 151.0 MB in the end (delta: 362.2 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 someBinaryFLOATComparisonOperation at line 51, overapproximation of bitwiseAnd at line 23. Possible FailurePath: [L47] float x = 0.0f; [L15] __uint32_t ix; [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (ix) = gf_u.word [L22] ieee_float_shape_type sf_u; [L23] sf_u.word = (ix & 0x7fffffff) [L24] EXPR sf_u.value [L24] (x) = sf_u.value [L26] return x; [L48] float res = fabs_float(x); [L51] EXPR res == 0.0f && __signbit_float(res) == 0 [L51] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L3] __assert_fail("0", "float_req_bl_1011a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 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: 15 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=15occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-30 02:41:56,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:41:56,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:41:56,364 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:41:56,365 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:41:56,372 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:41:56,376 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:41:56,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:41:56,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:41:56,396 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:41:56,399 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:41:56,406 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:41:56,418 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:41:56,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:41:56,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:41:56,425 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:41:56,427 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:41:56,433 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:41:56,436 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:41:56,447 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:41:56,449 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:41:56,451 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:41:56,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:41:56,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:41:56,458 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:41:56,458 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:41:56,459 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:41:56,460 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:41:56,461 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:41:56,462 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:41:56,463 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:41:56,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:41:56,467 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:41:56,470 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:41:56,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:41:56,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:41:56,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:41:56,476 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:41:56,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:41:56,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:41:56,479 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:41:56,480 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c5ea8288-5c67-4b11-913b-4907a6b5f4a8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-30 02:41:56,535 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:41:56,535 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:41:56,538 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:41:56,538 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:41:56,539 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:41:56,539 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:41:56,539 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:41:56,539 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:41:56,540 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:41:56,542 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:41:56,543 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:41:56,543 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:41:56,544 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:41:56,544 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:41:56,544 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:41:56,544 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:41:56,545 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:41:56,545 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 02:41:56,545 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 02:41:56,545 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:41:56,545 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:41:56,546 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:41:56,546 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:41:56,546 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:41:56,547 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 02:41:56,547 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:41:56,547 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:41:56,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:41:56,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:41:56,548 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:41:56,548 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:41:56,548 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-30 02:41:56,549 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 02:41:56,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:41:56,549 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:41:56,549 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:41:56,550 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_c5ea8288-5c67-4b11-913b-4907a6b5f4a8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c5ea8288-5c67-4b11-913b-4907a6b5f4a8/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 955f5e50325f07eb13f5ec8c2df35bf16a648c2d [2020-11-30 02:41:57,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:41:57,036 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:41:57,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:41:57,041 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:41:57,042 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:41:57,043 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c5ea8288-5c67-4b11-913b-4907a6b5f4a8/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1011a.c [2020-11-30 02:41:57,135 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c5ea8288-5c67-4b11-913b-4907a6b5f4a8/bin/utaipan/data/99f7788dd/dde61639c35d4d4cb776691c5e64d001/FLAG94314a7b3 [2020-11-30 02:41:57,789 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:41:57,790 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c5ea8288-5c67-4b11-913b-4907a6b5f4a8/sv-benchmarks/c/float-newlib/float_req_bl_1011a.c [2020-11-30 02:41:57,796 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c5ea8288-5c67-4b11-913b-4907a6b5f4a8/bin/utaipan/data/99f7788dd/dde61639c35d4d4cb776691c5e64d001/FLAG94314a7b3 [2020-11-30 02:41:58,170 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c5ea8288-5c67-4b11-913b-4907a6b5f4a8/bin/utaipan/data/99f7788dd/dde61639c35d4d4cb776691c5e64d001 [2020-11-30 02:41:58,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:41:58,176 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:41:58,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:41:58,178 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:41:58,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:41:58,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:41:58" (1/1) ... [2020-11-30 02:41:58,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@316452e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:41:58, skipping insertion in model container [2020-11-30 02:41:58,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:41:58" (1/1) ... [2020-11-30 02:41:58,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:41:58,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:41:58,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:41:58,431 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:41:58,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:41:58,468 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:41:58,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:41:58 WrapperNode [2020-11-30 02:41:58,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:41:58,470 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:41:58,470 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:41:58,470 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:41:58,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:41:58" (1/1) ... [2020-11-30 02:41:58,488 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:41:58" (1/1) ... [2020-11-30 02:41:58,543 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:41:58,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:41:58,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:41:58,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:41:58,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:41:58" (1/1) ... [2020-11-30 02:41:58,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:41:58" (1/1) ... [2020-11-30 02:41:58,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:41:58" (1/1) ... [2020-11-30 02:41:58,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:41:58" (1/1) ... [2020-11-30 02:41:58,567 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:41:58" (1/1) ... [2020-11-30 02:41:58,571 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:41:58" (1/1) ... [2020-11-30 02:41:58,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:41:58" (1/1) ... [2020-11-30 02:41:58,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:41:58,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:41:58,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:41:58,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:41:58,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:41:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ea8288-5c67-4b11-913b-4907a6b5f4a8/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 [2020-11-30 02:41:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 02:41:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:41:58,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-11-30 02:41:58,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-30 02:41:58,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:41:58,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:41:58,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-30 02:41:58,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-30 02:41:58,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 02:41:59,093 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:41:59,096 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-30 02:41:59,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:41:59 BoogieIcfgContainer [2020-11-30 02:41:59,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:41:59,109 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:41:59,109 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:41:59,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:41:59,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:41:58" (1/3) ... [2020-11-30 02:41:59,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a83c590 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:41:59, skipping insertion in model container [2020-11-30 02:41:59,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:41:58" (2/3) ... [2020-11-30 02:41:59,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a83c590 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:41:59, skipping insertion in model container [2020-11-30 02:41:59,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:41:59" (3/3) ... [2020-11-30 02:41:59,132 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1011a.c [2020-11-30 02:41:59,152 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:41:59,157 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 02:41:59,192 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 02:41:59,217 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:41:59,217 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:41:59,217 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:41:59,217 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:41:59,217 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:41:59,218 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:41:59,218 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:41:59,218 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:41:59,232 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-11-30 02:41:59,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 02:41:59,239 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:41:59,240 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:41:59,241 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:41:59,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:41:59,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1641221055, now seen corresponding path program 1 times [2020-11-30 02:41:59,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:41:59,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2116205529] [2020-11-30 02:41:59,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ea8288-5c67-4b11-913b-4907a6b5f4a8/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 [2020-11-30 02:41:59,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:41:59,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 02:41:59,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:41:59,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:41:59,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:41:59,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:41:59,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2116205529] [2020-11-30 02:41:59,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:41:59,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 02:41:59,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882023889] [2020-11-30 02:41:59,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 02:41:59,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:41:59,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 02:41:59,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:41:59,444 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-11-30 02:41:59,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:41:59,464 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2020-11-30 02:41:59,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 02:41:59,465 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-11-30 02:41:59,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:41:59,476 INFO L225 Difference]: With dead ends: 37 [2020-11-30 02:41:59,476 INFO L226 Difference]: Without dead ends: 16 [2020-11-30 02:41:59,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:41:59,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-30 02:41:59,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-30 02:41:59,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-30 02:41:59,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-11-30 02:41:59,518 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 9 [2020-11-30 02:41:59,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:41:59,519 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-11-30 02:41:59,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 02:41:59,519 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-11-30 02:41:59,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 02:41:59,520 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:41:59,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:41:59,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 02:41:59,737 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:41:59,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:41:59,741 INFO L82 PathProgramCache]: Analyzing trace with hash 558264036, now seen corresponding path program 1 times [2020-11-30 02:41:59,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:41:59,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1267937212] [2020-11-30 02:41:59,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ea8288-5c67-4b11-913b-4907a6b5f4a8/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 [2020-11-30 02:41:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:41:59,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 02:41:59,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:42:00,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:42:00,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:42:00,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:42:00,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1267937212] [2020-11-30 02:42:00,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:42:00,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-11-30 02:42:00,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490633820] [2020-11-30 02:42:00,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 02:42:00,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:42:00,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 02:42:00,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-30 02:42:00,136 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 9 states. [2020-11-30 02:42:00,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:42:00,294 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2020-11-30 02:42:00,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:42:00,295 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2020-11-30 02:42:00,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:42:00,296 INFO L225 Difference]: With dead ends: 19 [2020-11-30 02:42:00,296 INFO L226 Difference]: Without dead ends: 16 [2020-11-30 02:42:00,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-11-30 02:42:00,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-30 02:42:00,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-30 02:42:00,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-30 02:42:00,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-11-30 02:42:00,304 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 11 [2020-11-30 02:42:00,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:42:00,305 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-11-30 02:42:00,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 02:42:00,305 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-11-30 02:42:00,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 02:42:00,306 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:42:00,306 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:42:00,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 02:42:00,518 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:42:00,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:42:00,519 INFO L82 PathProgramCache]: Analyzing trace with hash -2014349959, now seen corresponding path program 1 times [2020-11-30 02:42:00,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:42:00,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1374018669] [2020-11-30 02:42:00,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ea8288-5c67-4b11-913b-4907a6b5f4a8/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 [2020-11-30 02:42:00,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:42:00,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-30 02:42:00,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:42:00,735 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:42:00,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:42:00,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:42:01,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:42:01,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1374018669] [2020-11-30 02:42:01,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:42:01,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 11] imperfect sequences [] total 17 [2020-11-30 02:42:01,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827448862] [2020-11-30 02:42:01,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-30 02:42:01,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:42:01,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-30 02:42:01,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2020-11-30 02:42:01,177 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand 17 states. [2020-11-30 02:42:01,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:42:01,511 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2020-11-30 02:42:01,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 02:42:01,512 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 15 [2020-11-30 02:42:01,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:42:01,513 INFO L225 Difference]: With dead ends: 16 [2020-11-30 02:42:01,513 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 02:42:01,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2020-11-30 02:42:01,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 02:42:01,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 02:42:01,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 02:42:01,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 02:42:01,515 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-11-30 02:42:01,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:42:01,515 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 02:42:01,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-30 02:42:01,515 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 02:42:01,515 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 02:42:01,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 02:42:01,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 02:42:01,850 INFO L277 CegarLoopResult]: At program point L56(lines 41 57) the Hoare annotation is: true [2020-11-30 02:42:01,850 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-30 02:42:01,850 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-30 02:42:01,850 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 02:42:01,851 INFO L274 CegarLoopResult]: For program point L32-1(lines 32 36) no Hoare annotation was computed. [2020-11-30 02:42:01,851 INFO L270 CegarLoopResult]: At program point L32-2(lines 32 36) the Hoare annotation is: (and (= (_ +zero 8 24) ULTIMATE.start_main_~res~0) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start_fabs_float_~ix~0) ((_ extract 30 23) ULTIMATE.start_fabs_float_~ix~0) ((_ extract 22 0) ULTIMATE.start_fabs_float_~ix~0))) (= (_ +zero 8 24) |ULTIMATE.start_fabs_float_#res|) (= (_ +zero 8 24) ULTIMATE.start_fabs_float_~x) (= (_ +zero 8 24) ULTIMATE.start___signbit_float_~x) |ULTIMATE.start_main_#t~short15|) [2020-11-30 02:42:01,851 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 02:42:01,851 INFO L274 CegarLoopResult]: For program point L32-3(lines 32 36) no Hoare annotation was computed. [2020-11-30 02:42:01,851 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 02:42:01,851 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 02:42:01,852 INFO L274 CegarLoopResult]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2020-11-30 02:42:01,852 INFO L270 CegarLoopResult]: At program point L16-2(lines 16 20) the Hoare annotation is: (= (_ +zero 8 24) ULTIMATE.start_fabs_float_~x) [2020-11-30 02:42:01,852 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 02:42:01,852 INFO L274 CegarLoopResult]: For program point L21(lines 21 25) no Hoare annotation was computed. [2020-11-30 02:42:01,852 INFO L274 CegarLoopResult]: For program point L21-1(lines 14 27) no Hoare annotation was computed. [2020-11-30 02:42:01,852 INFO L274 CegarLoopResult]: For program point L21-2(lines 21 25) no Hoare annotation was computed. [2020-11-30 02:42:01,853 INFO L270 CegarLoopResult]: At program point L38(lines 29 39) the Hoare annotation is: (and (= (_ +zero 8 24) ULTIMATE.start_main_~res~0) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start_fabs_float_~ix~0) ((_ extract 30 23) ULTIMATE.start_fabs_float_~ix~0) ((_ extract 22 0) ULTIMATE.start_fabs_float_~ix~0))) (= (_ +zero 8 24) |ULTIMATE.start_fabs_float_#res|) (= (_ +zero 8 24) ULTIMATE.start_fabs_float_~x) (= (_ +zero 8 24) ULTIMATE.start___signbit_float_~x) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___signbit_float_~w~0) ((_ extract 30 23) ULTIMATE.start___signbit_float_~w~0) ((_ extract 22 0) ULTIMATE.start___signbit_float_~w~0))) (= |ULTIMATE.start___signbit_float_#res| (_ bv0 32)) |ULTIMATE.start_main_#t~short15|) [2020-11-30 02:42:01,853 INFO L270 CegarLoopResult]: At program point L26(lines 14 27) the Hoare annotation is: (and (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start_fabs_float_~ix~0) ((_ extract 30 23) ULTIMATE.start_fabs_float_~ix~0) ((_ extract 22 0) ULTIMATE.start_fabs_float_~ix~0))) (= (_ +zero 8 24) |ULTIMATE.start_fabs_float_#res|) (= (_ +zero 8 24) ULTIMATE.start_fabs_float_~x)) [2020-11-30 02:42:01,853 INFO L274 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-11-30 02:42:01,853 INFO L274 CegarLoopResult]: For program point L51-2(lines 51 54) no Hoare annotation was computed. [2020-11-30 02:42:01,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:42:01 BoogieIcfgContainer [2020-11-30 02:42:01,870 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:42:01,871 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:42:01,871 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:42:01,871 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:42:01,872 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:41:59" (3/4) ... [2020-11-30 02:42:01,875 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 02:42:01,888 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-30 02:42:01,888 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 02:42:01,888 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-30 02:42:01,889 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 02:42:01,939 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c5ea8288-5c67-4b11-913b-4907a6b5f4a8/bin/utaipan/witness.graphml [2020-11-30 02:42:01,940 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:42:01,942 INFO L168 Benchmark]: Toolchain (without parser) took 3765.17 ms. Allocated memory was 54.5 MB in the beginning and 83.9 MB in the end (delta: 29.4 MB). Free memory was 33.1 MB in the beginning and 58.4 MB in the end (delta: -25.3 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:42:01,943 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 54.5 MB. Free memory was 36.4 MB in the beginning and 36.3 MB in the end (delta: 75.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:42:01,944 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.11 ms. Allocated memory is still 54.5 MB. Free memory was 32.9 MB in the beginning and 22.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:42:01,945 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.31 ms. Allocated memory is still 54.5 MB. Free memory was 22.4 MB in the beginning and 37.8 MB in the end (delta: -15.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:42:01,945 INFO L168 Benchmark]: Boogie Preprocessor took 33.50 ms. Allocated memory is still 54.5 MB. Free memory was 37.8 MB in the beginning and 36.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:42:01,946 INFO L168 Benchmark]: RCFGBuilder took 520.27 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 36.5 MB in the beginning and 50.7 MB in the end (delta: -14.3 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:42:01,947 INFO L168 Benchmark]: TraceAbstraction took 2761.11 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 50.1 MB in the beginning and 61.2 MB in the end (delta: -11.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:42:01,947 INFO L168 Benchmark]: Witness Printer took 69.65 ms. Allocated memory is still 83.9 MB. Free memory was 61.2 MB in the beginning and 58.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:42:01,956 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 54.5 MB. Free memory was 36.4 MB in the beginning and 36.3 MB in the end (delta: 75.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 291.11 ms. Allocated memory is still 54.5 MB. Free memory was 32.9 MB in the beginning and 22.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 73.31 ms. Allocated memory is still 54.5 MB. Free memory was 22.4 MB in the beginning and 37.8 MB in the end (delta: -15.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.50 ms. Allocated memory is still 54.5 MB. Free memory was 37.8 MB in the beginning and 36.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 520.27 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 36.5 MB in the beginning and 50.7 MB in the end (delta: -14.3 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2761.11 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 50.1 MB in the beginning and 61.2 MB in the end (delta: -11.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 16.1 GB. * Witness Printer took 69.65 ms. Allocated memory is still 83.9 MB. Free memory was 61.2 MB in the beginning and 58.4 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: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0]) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: ((((((~Pluszero~LONGDOUBLE() == res && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0])) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && \result == 0bv32) && aux-res == 0.0f && __signbit_float(res) == 0-aux - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((((~Pluszero~LONGDOUBLE() == res && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0])) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == x) && aux-res == 0.0f && __signbit_float(res) == 0-aux - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 34 SDtfs, 105 SDslu, 41 SDs, 0 SdLazy, 58 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 10 NumberOfFragments, 78 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 64 ConstructedInterpolants, 8 QuantifiedInterpolants, 4540 SizeOfPredicates, 22 NumberOfNonLiveVariables, 149 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...