./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0930.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f6ee123b-b778-4cc8-9c10-ec9cc65da742/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_f6ee123b-b778-4cc8-9c10-ec9cc65da742/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f6ee123b-b778-4cc8-9c10-ec9cc65da742/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f6ee123b-b778-4cc8-9c10-ec9cc65da742/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0930.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f6ee123b-b778-4cc8-9c10-ec9cc65da742/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f6ee123b-b778-4cc8-9c10-ec9cc65da742/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a2549d464b179f7f7f50962dd1fbb8e0dbdceb3b ............................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f6ee123b-b778-4cc8-9c10-ec9cc65da742/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_f6ee123b-b778-4cc8-9c10-ec9cc65da742/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f6ee123b-b778-4cc8-9c10-ec9cc65da742/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f6ee123b-b778-4cc8-9c10-ec9cc65da742/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0930.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f6ee123b-b778-4cc8-9c10-ec9cc65da742/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f6ee123b-b778-4cc8-9c10-ec9cc65da742/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a2549d464b179f7f7f50962dd1fbb8e0dbdceb3b ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 12:59:14,078 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 12:59:14,079 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 12:59:14,086 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 12:59:14,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 12:59:14,087 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 12:59:14,088 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 12:59:14,089 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 12:59:14,091 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 12:59:14,091 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 12:59:14,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 12:59:14,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 12:59:14,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 12:59:14,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 12:59:14,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 12:59:14,095 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 12:59:14,095 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 12:59:14,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 12:59:14,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 12:59:14,099 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 12:59:14,100 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 12:59:14,101 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 12:59:14,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 12:59:14,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 12:59:14,104 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 12:59:14,104 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 12:59:14,104 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 12:59:14,105 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 12:59:14,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 12:59:14,105 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 12:59:14,105 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 12:59:14,106 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 12:59:14,106 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 12:59:14,107 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 12:59:14,107 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 12:59:14,107 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 12:59:14,108 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 12:59:14,108 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 12:59:14,108 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 12:59:14,109 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 12:59:14,109 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 12:59:14,109 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f6ee123b-b778-4cc8-9c10-ec9cc65da742/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 12:59:14,119 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 12:59:14,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 12:59:14,120 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 12:59:14,120 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 12:59:14,120 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 12:59:14,120 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 12:59:14,120 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 12:59:14,120 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 12:59:14,120 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 12:59:14,121 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 12:59:14,121 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 12:59:14,121 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 12:59:14,121 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 12:59:14,121 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 12:59:14,121 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 12:59:14,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 12:59:14,122 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 12:59:14,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 12:59:14,122 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 12:59:14,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 12:59:14,122 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 12:59:14,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 12:59:14,122 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 12:59:14,122 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 12:59:14,122 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 12:59:14,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 12:59:14,123 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 12:59:14,123 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 12:59:14,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 12:59:14,123 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 12:59:14,123 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 12:59:14,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 12:59:14,123 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 12:59:14,124 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 12:59:14,124 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 12:59:14,124 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 12:59:14,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 12:59:14,124 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 12:59:14,124 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 12:59:14,124 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 12:59:14,124 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_f6ee123b-b778-4cc8-9c10-ec9cc65da742/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(__VERIFIER_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 -> a2549d464b179f7f7f50962dd1fbb8e0dbdceb3b [2019-12-07 12:59:14,234 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 12:59:14,243 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 12:59:14,246 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 12:59:14,247 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 12:59:14,247 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 12:59:14,247 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f6ee123b-b778-4cc8-9c10-ec9cc65da742/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_0930.c [2019-12-07 12:59:14,289 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f6ee123b-b778-4cc8-9c10-ec9cc65da742/bin/utaipan/data/3820a8b5f/7c6012788fbb48b8a56280ca601c34d0/FLAGf25055190 [2019-12-07 12:59:14,720 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 12:59:14,721 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f6ee123b-b778-4cc8-9c10-ec9cc65da742/sv-benchmarks/c/float-newlib/double_req_bl_0930.c [2019-12-07 12:59:14,725 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f6ee123b-b778-4cc8-9c10-ec9cc65da742/bin/utaipan/data/3820a8b5f/7c6012788fbb48b8a56280ca601c34d0/FLAGf25055190 [2019-12-07 12:59:15,070 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f6ee123b-b778-4cc8-9c10-ec9cc65da742/bin/utaipan/data/3820a8b5f/7c6012788fbb48b8a56280ca601c34d0 [2019-12-07 12:59:15,073 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 12:59:15,074 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 12:59:15,074 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 12:59:15,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 12:59:15,077 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 12:59:15,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:59:15" (1/1) ... [2019-12-07 12:59:15,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6490048a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:59:15, skipping insertion in model container [2019-12-07 12:59:15,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:59:15" (1/1) ... [2019-12-07 12:59:15,086 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 12:59:15,102 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 12:59:15,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:59:15,263 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 12:59:15,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:59:15,310 INFO L208 MainTranslator]: Completed translation [2019-12-07 12:59:15,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:59:15 WrapperNode [2019-12-07 12:59:15,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 12:59:15,311 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 12:59:15,311 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 12:59:15,311 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 12:59:15,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:59:15" (1/1) ... [2019-12-07 12:59:15,325 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:59:15" (1/1) ... [2019-12-07 12:59:15,343 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 12:59:15,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 12:59:15,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 12:59:15,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 12:59:15,350 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:59:15" (1/1) ... [2019-12-07 12:59:15,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:59:15" (1/1) ... [2019-12-07 12:59:15,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:59:15" (1/1) ... [2019-12-07 12:59:15,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:59:15" (1/1) ... [2019-12-07 12:59:15,359 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:59:15" (1/1) ... [2019-12-07 12:59:15,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:59:15" (1/1) ... [2019-12-07 12:59:15,365 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:59:15" (1/1) ... [2019-12-07 12:59:15,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 12:59:15,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 12:59:15,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 12:59:15,368 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 12:59:15,368 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:59:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f6ee123b-b778-4cc8-9c10-ec9cc65da742/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 [2019-12-07 12:59:15,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 12:59:15,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-12-07 12:59:15,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 12:59:15,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-07 12:59:15,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 12:59:15,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 12:59:15,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 12:59:15,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 12:59:15,694 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 12:59:15,695 INFO L287 CfgBuilder]: Removed 16 assume(true) statements. [2019-12-07 12:59:15,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:59:15 BoogieIcfgContainer [2019-12-07 12:59:15,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 12:59:15,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 12:59:15,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 12:59:15,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 12:59:15,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:59:15" (1/3) ... [2019-12-07 12:59:15,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@727bf390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:59:15, skipping insertion in model container [2019-12-07 12:59:15,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:59:15" (2/3) ... [2019-12-07 12:59:15,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@727bf390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:59:15, skipping insertion in model container [2019-12-07 12:59:15,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:59:15" (3/3) ... [2019-12-07 12:59:15,700 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0930.c [2019-12-07 12:59:15,707 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 12:59:15,711 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 12:59:15,719 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 12:59:15,734 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 12:59:15,734 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 12:59:15,734 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 12:59:15,734 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 12:59:15,734 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 12:59:15,734 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 12:59:15,734 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 12:59:15,734 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 12:59:15,743 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-12-07 12:59:15,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 12:59:15,747 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:59:15,748 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:59:15,748 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:59:15,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:59:15,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1090253029, now seen corresponding path program 1 times [2019-12-07 12:59:15,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 12:59:15,759 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162351778] [2019-12-07 12:59:15,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:59:15,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:59:15,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:59:15,841 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162351778] [2019-12-07 12:59:15,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:59:15,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 12:59:15,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041083576] [2019-12-07 12:59:15,845 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 12:59:15,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 12:59:15,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 12:59:15,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 12:59:15,855 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2019-12-07 12:59:15,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:59:15,870 INFO L93 Difference]: Finished difference Result 45 states and 71 transitions. [2019-12-07 12:59:15,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 12:59:15,871 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-12-07 12:59:15,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:59:15,878 INFO L225 Difference]: With dead ends: 45 [2019-12-07 12:59:15,878 INFO L226 Difference]: Without dead ends: 21 [2019-12-07 12:59:15,880 INFO L630 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 [2019-12-07 12:59:15,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-12-07 12:59:15,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-12-07 12:59:15,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-12-07 12:59:15,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-12-07 12:59:15,902 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 9 [2019-12-07 12:59:15,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:59:15,902 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-12-07 12:59:15,902 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 12:59:15,902 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-12-07 12:59:15,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 12:59:15,903 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:59:15,903 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:59:15,903 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:59:15,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:59:15,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1679914850, now seen corresponding path program 1 times [2019-12-07 12:59:15,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 12:59:15,904 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310501842] [2019-12-07 12:59:15,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:59:15,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:59:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:59:15,962 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 12:59:15,962 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 12:59:15,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 12:59:15 BoogieIcfgContainer [2019-12-07 12:59:15,985 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 12:59:15,985 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 12:59:15,985 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 12:59:15,985 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 12:59:15,985 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:59:15" (3/4) ... [2019-12-07 12:59:15,988 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 12:59:15,988 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 12:59:15,989 INFO L168 Benchmark]: Toolchain (without parser) took 915.13 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 942.3 MB in the beginning and 1.0 GB in the end (delta: -78.7 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. [2019-12-07 12:59:15,990 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:59:15,990 INFO L168 Benchmark]: CACSL2BoogieTranslator took 236.34 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 942.3 MB in the beginning and 1.1 GB in the end (delta: -144.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-12-07 12:59:15,990 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.40 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:59:15,991 INFO L168 Benchmark]: Boogie Preprocessor took 23.92 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:59:15,991 INFO L168 Benchmark]: RCFGBuilder took 327.85 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 38.1 MB). Peak memory consumption was 38.1 MB. Max. memory is 11.5 GB. [2019-12-07 12:59:15,992 INFO L168 Benchmark]: TraceAbstraction took 288.65 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. [2019-12-07 12:59:15,992 INFO L168 Benchmark]: Witness Printer took 2.81 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:59:15,994 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 236.34 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 942.3 MB in the beginning and 1.1 GB in the end (delta: -144.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 32.40 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.92 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 327.85 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 38.1 MB). Peak memory consumption was 38.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 288.65 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. * Witness Printer took 2.81 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 150]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 149, overapproximation of bitwiseOr at line 59, overapproximation of someBinaryArithmeticDOUBLEoperation at line 60. Possible FailurePath: [L32-L41] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L43] static const double zero = 0.0; [L144] double x = 1.0; [L46] double hfsq, f, s, z, R, w, t1, t2, dk; [L47] __int32_t k, hx, i, j; [L48] __uint32_t lx; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L51] ieee_double_shape_type ew_u; [L52] ew_u.value = (x) [L53] EXPR ew_u.parts.msw [L53] (hx) = ew_u.parts.msw [L54] EXPR ew_u.parts.lsw [L54] (lx) = ew_u.parts.lsw [L57] k = 0 VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L58] COND TRUE hx < 0x00100000 VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L59] COND TRUE ((hx & 0x7fffffff) | lx) == 0 [L60] return -two54_log / zero; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L146] double res = __ieee754_log(x); [L149] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L149] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L150] __VERIFIER_error() VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 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=23occurred 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, 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 0.1.25-f470102 [2019-12-07 12:59:17,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 12:59:17,342 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 12:59:17,350 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 12:59:17,350 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 12:59:17,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 12:59:17,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 12:59:17,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 12:59:17,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 12:59:17,355 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 12:59:17,356 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 12:59:17,357 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 12:59:17,357 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 12:59:17,357 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 12:59:17,358 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 12:59:17,359 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 12:59:17,359 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 12:59:17,360 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 12:59:17,361 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 12:59:17,363 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 12:59:17,364 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 12:59:17,365 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 12:59:17,366 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 12:59:17,366 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 12:59:17,368 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 12:59:17,368 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 12:59:17,368 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 12:59:17,369 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 12:59:17,369 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 12:59:17,370 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 12:59:17,370 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 12:59:17,370 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 12:59:17,371 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 12:59:17,371 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 12:59:17,372 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 12:59:17,372 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 12:59:17,373 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 12:59:17,373 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 12:59:17,373 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 12:59:17,374 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 12:59:17,374 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 12:59:17,375 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f6ee123b-b778-4cc8-9c10-ec9cc65da742/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-12-07 12:59:17,385 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 12:59:17,385 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 12:59:17,385 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 12:59:17,386 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 12:59:17,386 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 12:59:17,386 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 12:59:17,386 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 12:59:17,386 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 12:59:17,386 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 12:59:17,387 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 12:59:17,387 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 12:59:17,387 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 12:59:17,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 12:59:17,387 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 12:59:17,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 12:59:17,387 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 12:59:17,388 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 12:59:17,388 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 12:59:17,388 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 12:59:17,388 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 12:59:17,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 12:59:17,388 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 12:59:17,388 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 12:59:17,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 12:59:17,389 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 12:59:17,389 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 12:59:17,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 12:59:17,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 12:59:17,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 12:59:17,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 12:59:17,389 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 12:59:17,389 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-12-07 12:59:17,390 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 12:59:17,390 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 12:59:17,390 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 12:59:17,390 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 12:59:17,390 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_f6ee123b-b778-4cc8-9c10-ec9cc65da742/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(__VERIFIER_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 -> a2549d464b179f7f7f50962dd1fbb8e0dbdceb3b [2019-12-07 12:59:17,556 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 12:59:17,566 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 12:59:17,569 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 12:59:17,570 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 12:59:17,571 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 12:59:17,571 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f6ee123b-b778-4cc8-9c10-ec9cc65da742/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_0930.c [2019-12-07 12:59:17,612 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f6ee123b-b778-4cc8-9c10-ec9cc65da742/bin/utaipan/data/e70f8ffb7/a8a3619deaeb4d2c8c809359679048da/FLAG2145e186e [2019-12-07 12:59:18,045 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 12:59:18,046 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f6ee123b-b778-4cc8-9c10-ec9cc65da742/sv-benchmarks/c/float-newlib/double_req_bl_0930.c [2019-12-07 12:59:18,050 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f6ee123b-b778-4cc8-9c10-ec9cc65da742/bin/utaipan/data/e70f8ffb7/a8a3619deaeb4d2c8c809359679048da/FLAG2145e186e [2019-12-07 12:59:18,059 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f6ee123b-b778-4cc8-9c10-ec9cc65da742/bin/utaipan/data/e70f8ffb7/a8a3619deaeb4d2c8c809359679048da [2019-12-07 12:59:18,061 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 12:59:18,061 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 12:59:18,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 12:59:18,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 12:59:18,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 12:59:18,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:59:18" (1/1) ... [2019-12-07 12:59:18,067 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@357db60c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:59:18, skipping insertion in model container [2019-12-07 12:59:18,067 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:59:18" (1/1) ... [2019-12-07 12:59:18,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 12:59:18,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 12:59:18,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:59:18,215 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 12:59:18,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:59:18,297 INFO L208 MainTranslator]: Completed translation [2019-12-07 12:59:18,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:59:18 WrapperNode [2019-12-07 12:59:18,297 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 12:59:18,298 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 12:59:18,298 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 12:59:18,298 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 12:59:18,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:59:18" (1/1) ... [2019-12-07 12:59:18,312 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:59:18" (1/1) ... [2019-12-07 12:59:18,331 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 12:59:18,331 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 12:59:18,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 12:59:18,331 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 12:59:18,338 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:59:18" (1/1) ... [2019-12-07 12:59:18,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:59:18" (1/1) ... [2019-12-07 12:59:18,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:59:18" (1/1) ... [2019-12-07 12:59:18,342 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:59:18" (1/1) ... [2019-12-07 12:59:18,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:59:18" (1/1) ... [2019-12-07 12:59:18,353 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:59:18" (1/1) ... [2019-12-07 12:59:18,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:59:18" (1/1) ... [2019-12-07 12:59:18,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 12:59:18,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 12:59:18,359 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 12:59:18,359 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 12:59:18,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:59:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f6ee123b-b778-4cc8-9c10-ec9cc65da742/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 [2019-12-07 12:59:18,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-12-07 12:59:18,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-12-07 12:59:18,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 12:59:18,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 12:59:18,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 12:59:18,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 12:59:18,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-12-07 12:59:18,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 12:59:41,820 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 12:59:41,820 INFO L287 CfgBuilder]: Removed 16 assume(true) statements. [2019-12-07 12:59:41,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:59:41 BoogieIcfgContainer [2019-12-07 12:59:41,821 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 12:59:41,822 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 12:59:41,822 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 12:59:41,824 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 12:59:41,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:59:18" (1/3) ... [2019-12-07 12:59:41,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fc27df2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:59:41, skipping insertion in model container [2019-12-07 12:59:41,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:59:18" (2/3) ... [2019-12-07 12:59:41,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fc27df2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:59:41, skipping insertion in model container [2019-12-07 12:59:41,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:59:41" (3/3) ... [2019-12-07 12:59:41,826 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0930.c [2019-12-07 12:59:41,833 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 12:59:41,838 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 12:59:41,846 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 12:59:41,861 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 12:59:41,861 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 12:59:41,861 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 12:59:41,861 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 12:59:41,861 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 12:59:41,861 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 12:59:41,862 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 12:59:41,862 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 12:59:41,870 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-12-07 12:59:41,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 12:59:41,874 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:59:41,875 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:59:41,875 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:59:41,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:59:41,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1030213693, now seen corresponding path program 1 times [2019-12-07 12:59:41,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 12:59:41,886 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [288505060] [2019-12-07 12:59:41,886 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f6ee123b-b778-4cc8-9c10-ec9cc65da742/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 [2019-12-07 12:59:42,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:59:42,692 INFO L264 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-07 12:59:42,696 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:59:42,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:59:42,707 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:59:42,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:59:42,711 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [288505060] [2019-12-07 12:59:42,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:59:42,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 12:59:42,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300328081] [2019-12-07 12:59:42,716 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 12:59:42,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 12:59:42,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 12:59:42,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 12:59:42,728 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2019-12-07 12:59:42,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:59:42,742 INFO L93 Difference]: Finished difference Result 64 states and 104 transitions. [2019-12-07 12:59:42,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 12:59:42,743 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-12-07 12:59:42,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:59:42,750 INFO L225 Difference]: With dead ends: 64 [2019-12-07 12:59:42,750 INFO L226 Difference]: Without dead ends: 30 [2019-12-07 12:59:42,753 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 12:59:42,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-12-07 12:59:42,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-12-07 12:59:42,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-07 12:59:42,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 41 transitions. [2019-12-07 12:59:42,776 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 41 transitions. Word has length 10 [2019-12-07 12:59:42,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:59:42,776 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 41 transitions. [2019-12-07 12:59:42,776 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 12:59:42,776 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2019-12-07 12:59:42,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 12:59:42,777 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:59:42,777 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:59:42,978 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 12:59:42,978 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:59:42,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:59:42,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1305093504, now seen corresponding path program 1 times [2019-12-07 12:59:42,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 12:59:42,982 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [733005579] [2019-12-07 12:59:42,983 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f6ee123b-b778-4cc8-9c10-ec9cc65da742/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 [2019-12-07 12:59:43,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:59:43,831 INFO L264 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 12:59:43,833 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:59:43,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:59:43,891 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:59:43,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:59:43,939 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [733005579] [2019-12-07 12:59:43,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:59:43,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-12-07 12:59:43,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050470690] [2019-12-07 12:59:43,941 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 12:59:43,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 12:59:43,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 12:59:43,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 12:59:43,943 INFO L87 Difference]: Start difference. First operand 30 states and 41 transitions. Second operand 6 states. [2019-12-07 12:59:47,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:59:47,551 INFO L93 Difference]: Finished difference Result 50 states and 69 transitions. [2019-12-07 12:59:48,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 12:59:48,273 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-12-07 12:59:48,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:59:48,274 INFO L225 Difference]: With dead ends: 50 [2019-12-07 12:59:48,275 INFO L226 Difference]: Without dead ends: 26 [2019-12-07 12:59:48,276 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 12:59:48,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-12-07 12:59:48,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-12-07 12:59:48,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-12-07 12:59:48,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2019-12-07 12:59:48,281 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 11 [2019-12-07 12:59:48,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:59:48,282 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2019-12-07 12:59:48,282 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 12:59:48,282 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2019-12-07 12:59:48,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-07 12:59:48,283 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:59:48,283 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:59:48,484 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 12:59:48,484 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:59:48,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:59:48,485 INFO L82 PathProgramCache]: Analyzing trace with hash 464469069, now seen corresponding path program 1 times [2019-12-07 12:59:48,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 12:59:48,486 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1116417414] [2019-12-07 12:59:48,486 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f6ee123b-b778-4cc8-9c10-ec9cc65da742/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 [2019-12-07 12:59:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:59:48,646 INFO L264 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 12:59:48,648 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:59:48,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:59:48,685 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:59:48,687 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:59:48,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:59:48,714 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1116417414] [2019-12-07 12:59:48,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:59:48,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-12-07 12:59:48,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333618589] [2019-12-07 12:59:48,715 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 12:59:48,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 12:59:48,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 12:59:48,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-12-07 12:59:48,716 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand 7 states. [2019-12-07 13:00:14,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:00:14,304 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2019-12-07 13:00:14,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 13:00:14,305 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2019-12-07 13:00:14,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:00:14,306 INFO L225 Difference]: With dead ends: 47 [2019-12-07 13:00:14,306 INFO L226 Difference]: Without dead ends: 44 [2019-12-07 13:00:14,306 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-12-07 13:00:14,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-12-07 13:00:14,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 28. [2019-12-07 13:00:14,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-07 13:00:14,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2019-12-07 13:00:14,311 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 17 [2019-12-07 13:00:14,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:00:14,312 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2019-12-07 13:00:14,312 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 13:00:14,312 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2019-12-07 13:00:14,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-07 13:00:14,313 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:00:14,313 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:00:14,513 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 13:00:14,514 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:00:14,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:00:14,515 INFO L82 PathProgramCache]: Analyzing trace with hash 466316111, now seen corresponding path program 1 times [2019-12-07 13:00:14,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 13:00:14,516 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [449726392] [2019-12-07 13:00:14,517 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f6ee123b-b778-4cc8-9c10-ec9cc65da742/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 [2019-12-07 13:00:15,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:00:15,188 INFO L264 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-07 13:00:15,190 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:00:15,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:00:15,314 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 13:00:15,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:00:15,473 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [449726392] [2019-12-07 13:00:15,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:00:15,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2019-12-07 13:00:15,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76215257] [2019-12-07 13:00:15,474 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-07 13:00:15,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 13:00:15,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 13:00:15,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2019-12-07 13:00:15,475 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 12 states. [2019-12-07 13:00:50,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:00:50,210 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2019-12-07 13:00:50,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 13:00:50,270 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2019-12-07 13:00:50,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:00:50,271 INFO L225 Difference]: With dead ends: 55 [2019-12-07 13:00:50,271 INFO L226 Difference]: Without dead ends: 46 [2019-12-07 13:00:50,271 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2019-12-07 13:00:50,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-12-07 13:00:50,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 28. [2019-12-07 13:00:50,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-07 13:00:50,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2019-12-07 13:00:50,276 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 17 [2019-12-07 13:00:50,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:00:50,277 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2019-12-07 13:00:50,277 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-07 13:00:50,277 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2019-12-07 13:00:50,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-07 13:00:50,278 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:00:50,278 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:00:50,478 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-12-07 13:00:50,479 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:00:50,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:00:50,480 INFO L82 PathProgramCache]: Analyzing trace with hash 671337773, now seen corresponding path program 1 times [2019-12-07 13:00:50,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 13:00:50,482 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1396487426] [2019-12-07 13:00:50,482 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f6ee123b-b778-4cc8-9c10-ec9cc65da742/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-12-07 13:00:51,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:00:51,517 INFO L264 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 15 conjunts are in the unsatisfiable core [2019-12-07 13:00:51,520 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:00:51,651 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 126 [2019-12-07 13:00:51,659 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 13:00:51,663 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:00:51,663 INFO L534 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 13:00:51,697 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:00:51,697 INFO L534 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-12-07 13:00:51,698 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:161, output treesize:89 [2019-12-07 13:00:51,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:00:51,736 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 13:00:52,643 WARN L192 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2019-12-07 13:00:52,653 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 71 [2019-12-07 13:00:52,657 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 13:00:52,882 WARN L192 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2019-12-07 13:00:52,883 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:00:52,883 INFO L534 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 13:00:53,488 WARN L192 SmtUtils]: Spent 604.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2019-12-07 13:00:53,488 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:00:53,489 INFO L534 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 13:00:53,489 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:88, output treesize:46 [2019-12-07 13:01:03,018 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2019-12-07 13:01:11,585 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2019-12-07 13:01:11,586 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1396487426] [2019-12-07 13:01:11,586 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") [2019-12-07 13:01:11,587 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [237143743] [2019-12-07 13:01:11,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f6ee123b-b778-4cc8-9c10-ec9cc65da742/bin/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 13:01:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:01:14,442 INFO L264 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 18 conjunts are in the unsatisfiable core [2019-12-07 13:01:14,443 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@452ef79d [2019-12-07 13:01:14,443 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447761924] [2019-12-07 13:01:14,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f6ee123b-b778-4cc8-9c10-ec9cc65da742/bin/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:01:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:01:15,222 INFO L264 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 14 conjunts are in the unsatisfiable core [2019-12-07 13:01:15,223 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@452ef79d [2019-12-07 13:01:15,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:01:15,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2019-12-07 13:01:15,223 ERROR L206 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2019-12-07 13:01:15,223 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 13:01:15,828 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk,6 mathsat -unsat_core_generation=3,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:01:15,845 WARN L229 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2019-12-07 13:01:15,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 01:01:15 BoogieIcfgContainer [2019-12-07 13:01:15,846 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 13:01:15,846 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 13:01:15,846 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 13:01:15,846 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 13:01:15,846 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:59:41" (3/4) ... [2019-12-07 13:01:15,849 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 13:01:15,849 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 13:01:15,850 INFO L168 Benchmark]: Toolchain (without parser) took 117788.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 953.7 MB in the beginning and 859.8 MB in the end (delta: 93.9 MB). Peak memory consumption was 233.9 MB. Max. memory is 11.5 GB. [2019-12-07 13:01:15,851 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:01:15,851 INFO L168 Benchmark]: CACSL2BoogieTranslator took 235.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 953.7 MB in the beginning and 1.1 GB in the end (delta: -175.7 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. [2019-12-07 13:01:15,852 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.31 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:01:15,852 INFO L168 Benchmark]: Boogie Preprocessor took 27.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-12-07 13:01:15,852 INFO L168 Benchmark]: RCFGBuilder took 23462.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.3 MB). Peak memory consumption was 38.3 MB. Max. memory is 11.5 GB. [2019-12-07 13:01:15,853 INFO L168 Benchmark]: TraceAbstraction took 94023.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 859.8 MB in the end (delta: 224.5 MB). Peak memory consumption was 224.5 MB. Max. memory is 11.5 GB. [2019-12-07 13:01:15,853 INFO L168 Benchmark]: Witness Printer took 3.42 ms. Allocated memory is still 1.2 GB. Free memory is still 859.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:01:15,856 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 235.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 953.7 MB in the beginning and 1.1 GB in the end (delta: -175.7 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.31 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 23462.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.3 MB). Peak memory consumption was 38.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 94023.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 859.8 MB in the end (delta: 224.5 MB). Peak memory consumption was 224.5 MB. Max. memory is 11.5 GB. * Witness Printer took 3.42 ms. Allocated memory is still 1.2 GB. Free memory is still 859.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 150]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L32-L41] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L43] static const double zero = 0.0; [L144] double x = 1.0; [L46] double hfsq, f, s, z, R, w, t1, t2, dk; [L47] __int32_t k, hx, i, j; [L48] __uint32_t lx; [L51] ieee_double_shape_type ew_u; [L52] ew_u.value = (x) [L53] EXPR ew_u.parts.msw [L53] (hx) = ew_u.parts.msw [L54] EXPR ew_u.parts.lsw [L54] (lx) = ew_u.parts.lsw [L57] k = 0 [L58] COND FALSE !(hx < 0x00100000) [L71] COND FALSE !(hx >= 0x7ff00000) [L73] k += (hx >> 20) - 1023 [L74] hx &= 0x000fffff [L75] i = (hx + 0x95f64) & 0x100000 [L77] ieee_double_shape_type sh_u; [L78] sh_u.value = (x) [L79] sh_u.parts.msw = (hx | (i ^ 0x3ff00000)) [L80] EXPR sh_u.value [L80] (x) = sh_u.value [L82] k += (i >> 20) [L83] f = x - 1.0 [L84] COND TRUE (0x000fffff & (2 + hx)) < 3 [L85] COND FALSE !(f == zero) [L93] R = f * f * (0.5 - 0.33333333333333333 * f) [L94] COND TRUE k == 0 [L95] return f - R; [L146] double res = __ieee754_log(x); [L149] EXPR res == 0.0 && __signbit_double(res) == 0 [L149] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L150] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Result: UNKNOWN, OverallTime: 93.9s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 64.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 126 SDtfs, 79 SDslu, 289 SDs, 0 SdLazy, 87 SolverSat, 12 SolverUnsat, 25 SolverUnknown, 0 SolverNotchecked, 61.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 4 MinimizatonAttempts, 34 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 102 ConstructedInterpolants, 17 QuantifiedInterpolants, 9046 SizeOfPredicates, 19 NumberOfNonLiveVariables, 200 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: 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...