./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1032a_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b4bb1c64-ec48-4758-a10b-ce323d5d86b7/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b4bb1c64-ec48-4758-a10b-ce323d5d86b7/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b4bb1c64-ec48-4758-a10b-ce323d5d86b7/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b4bb1c64-ec48-4758-a10b-ce323d5d86b7/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1032a_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b4bb1c64-ec48-4758-a10b-ce323d5d86b7/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b4bb1c64-ec48-4758-a10b-ce323d5d86b7/bin-2019/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 9a3696439220bbea1d6ed5ed3b22aa10206af5de ................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b4bb1c64-ec48-4758-a10b-ce323d5d86b7/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b4bb1c64-ec48-4758-a10b-ce323d5d86b7/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b4bb1c64-ec48-4758-a10b-ce323d5d86b7/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b4bb1c64-ec48-4758-a10b-ce323d5d86b7/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1032a_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b4bb1c64-ec48-4758-a10b-ce323d5d86b7/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b4bb1c64-ec48-4758-a10b-ce323d5d86b7/bin-2019/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 9a3696439220bbea1d6ed5ed3b22aa10206af5de ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 12:21:32,552 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 12:21:32,553 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 12:21:32,560 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 12:21:32,560 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 12:21:32,561 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 12:21:32,562 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 12:21:32,563 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 12:21:32,564 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 12:21:32,564 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 12:21:32,565 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 12:21:32,565 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 12:21:32,566 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 12:21:32,566 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 12:21:32,567 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 12:21:32,568 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 12:21:32,568 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 12:21:32,569 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 12:21:32,571 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 12:21:32,572 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 12:21:32,572 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 12:21:32,573 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 12:21:32,575 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 12:21:32,575 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 12:21:32,575 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 12:21:32,576 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 12:21:32,576 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 12:21:32,577 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 12:21:32,577 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 12:21:32,578 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 12:21:32,578 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 12:21:32,579 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 12:21:32,579 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 12:21:32,579 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 12:21:32,579 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 12:21:32,580 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 12:21:32,580 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b4bb1c64-ec48-4758-a10b-ce323d5d86b7/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 12:21:32,590 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 12:21:32,590 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 12:21:32,591 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 12:21:32,591 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 12:21:32,591 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 12:21:32,591 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 12:21:32,591 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 12:21:32,591 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 12:21:32,591 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 12:21:32,592 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 12:21:32,592 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 12:21:32,592 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 12:21:32,592 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 12:21:32,592 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 12:21:32,593 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 12:21:32,593 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 12:21:32,593 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 12:21:32,593 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 12:21:32,593 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 12:21:32,593 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 12:21:32,594 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 12:21:32,594 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 12:21:32,594 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 12:21:32,594 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 12:21:32,594 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 12:21:32,594 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 12:21:32,594 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 12:21:32,595 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 12:21:32,595 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 12:21:32,595 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 12:21:32,595 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 12:21:32,595 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 12:21:32,595 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 12:21:32,595 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 12:21:32,595 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 12:21:32,596 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 12:21:32,596 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 12:21:32,596 INFO L133 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/working_dir_b4bb1c64-ec48-4758-a10b-ce323d5d86b7/bin-2019/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 -> 9a3696439220bbea1d6ed5ed3b22aa10206af5de [2018-11-18 12:21:32,618 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 12:21:32,628 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 12:21:32,630 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 12:21:32,631 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 12:21:32,631 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 12:21:32,632 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b4bb1c64-ec48-4758-a10b-ce323d5d86b7/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1032a_true-unreach-call.c [2018-11-18 12:21:32,673 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b4bb1c64-ec48-4758-a10b-ce323d5d86b7/bin-2019/utaipan/data/272ab7fb1/68e3d9ae223d4ea587e1f19d01e1a951/FLAG3be320b0f [2018-11-18 12:21:33,063 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 12:21:33,063 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b4bb1c64-ec48-4758-a10b-ce323d5d86b7/sv-benchmarks/c/float-newlib/float_req_bl_1032a_true-unreach-call.c [2018-11-18 12:21:33,067 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b4bb1c64-ec48-4758-a10b-ce323d5d86b7/bin-2019/utaipan/data/272ab7fb1/68e3d9ae223d4ea587e1f19d01e1a951/FLAG3be320b0f [2018-11-18 12:21:33,076 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b4bb1c64-ec48-4758-a10b-ce323d5d86b7/bin-2019/utaipan/data/272ab7fb1/68e3d9ae223d4ea587e1f19d01e1a951 [2018-11-18 12:21:33,078 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 12:21:33,079 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 12:21:33,079 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 12:21:33,079 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 12:21:33,082 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 12:21:33,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:21:33" (1/1) ... [2018-11-18 12:21:33,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64e3deec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:21:33, skipping insertion in model container [2018-11-18 12:21:33,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:21:33" (1/1) ... [2018-11-18 12:21:33,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 12:21:33,105 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 12:21:33,211 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:21:33,213 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 12:21:33,226 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:21:33,238 INFO L195 MainTranslator]: Completed translation [2018-11-18 12:21:33,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:21:33 WrapperNode [2018-11-18 12:21:33,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 12:21:33,239 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 12:21:33,239 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 12:21:33,239 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 12:21:33,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:21:33" (1/1) ... [2018-11-18 12:21:33,254 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:21:33" (1/1) ... [2018-11-18 12:21:33,296 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 12:21:33,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 12:21:33,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 12:21:33,296 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 12:21:33,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:21:33" (1/1) ... [2018-11-18 12:21:33,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:21:33" (1/1) ... [2018-11-18 12:21:33,306 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:21:33" (1/1) ... [2018-11-18 12:21:33,307 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:21:33" (1/1) ... [2018-11-18 12:21:33,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:21:33" (1/1) ... [2018-11-18 12:21:33,319 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:21:33" (1/1) ... [2018-11-18 12:21:33,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:21:33" (1/1) ... [2018-11-18 12:21:33,321 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 12:21:33,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 12:21:33,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 12:21:33,322 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 12:21:33,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:21:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b4bb1c64-ec48-4758-a10b-ce323d5d86b7/bin-2019/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 [2018-11-18 12:21:33,362 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 12:21:33,362 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 12:21:33,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-11-18 12:21:33,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 12:21:33,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 12:21:33,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 12:21:33,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-18 12:21:33,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 12:21:33,363 INFO L130 BoogieDeclarations]: Found specification of procedure round_float [2018-11-18 12:21:33,363 INFO L138 BoogieDeclarations]: Found implementation of procedure round_float [2018-11-18 12:21:33,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 12:21:33,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 12:21:33,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 12:21:33,364 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-11-18 12:21:33,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-11-18 12:21:33,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 12:21:33,548 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 12:21:33,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:21:33 BoogieIcfgContainer [2018-11-18 12:21:33,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 12:21:33,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 12:21:33,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 12:21:33,552 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 12:21:33,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 12:21:33" (1/3) ... [2018-11-18 12:21:33,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c7e6ede and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:21:33, skipping insertion in model container [2018-11-18 12:21:33,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:21:33" (2/3) ... [2018-11-18 12:21:33,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c7e6ede and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:21:33, skipping insertion in model container [2018-11-18 12:21:33,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:21:33" (3/3) ... [2018-11-18 12:21:33,555 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1032a_true-unreach-call.c [2018-11-18 12:21:33,564 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 12:21:33,571 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 12:21:33,584 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 12:21:33,611 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 12:21:33,611 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 12:21:33,611 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 12:21:33,611 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 12:21:33,612 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 12:21:33,612 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 12:21:33,612 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 12:21:33,612 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 12:21:33,623 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2018-11-18 12:21:33,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-18 12:21:33,627 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:21:33,628 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:21:33,629 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:21:33,633 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:21:33,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1066529686, now seen corresponding path program 1 times [2018-11-18 12:21:33,635 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 12:21:33,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:21:33,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:21:33,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:21:33,666 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 12:21:33,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:21:33,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:21:33,722 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:21:33,723 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 12:21:33,723 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 12:21:33,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 12:21:33,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 12:21:33,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 12:21:33,735 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2018-11-18 12:21:33,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:21:33,750 INFO L93 Difference]: Finished difference Result 68 states and 93 transitions. [2018-11-18 12:21:33,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 12:21:33,751 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-11-18 12:21:33,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:21:33,757 INFO L225 Difference]: With dead ends: 68 [2018-11-18 12:21:33,758 INFO L226 Difference]: Without dead ends: 34 [2018-11-18 12:21:33,760 INFO L604 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 [2018-11-18 12:21:33,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-18 12:21:33,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-11-18 12:21:33,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-18 12:21:33,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2018-11-18 12:21:33,785 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 18 [2018-11-18 12:21:33,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:21:33,786 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2018-11-18 12:21:33,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 12:21:33,786 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2018-11-18 12:21:33,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-18 12:21:33,787 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:21:33,787 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:21:33,787 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:21:33,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:21:33,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1883902620, now seen corresponding path program 1 times [2018-11-18 12:21:33,787 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 12:21:33,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:21:33,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:21:33,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:21:33,789 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 12:21:33,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 12:21:33,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 12:21:33,855 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 12:21:33,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 12:21:33 BoogieIcfgContainer [2018-11-18 12:21:33,875 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 12:21:33,875 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 12:21:33,875 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 12:21:33,875 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 12:21:33,875 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:21:33" (3/4) ... [2018-11-18 12:21:33,878 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 12:21:33,878 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 12:21:33,879 INFO L168 Benchmark]: Toolchain (without parser) took 800.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 953.8 MB in the beginning and 1.1 GB in the end (delta: -132.9 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. [2018-11-18 12:21:33,880 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:21:33,880 INFO L168 Benchmark]: CACSL2BoogieTranslator took 159.51 ms. Allocated memory is still 1.0 GB. Free memory was 953.8 MB in the beginning and 940.3 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-11-18 12:21:33,881 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -200.9 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-11-18 12:21:33,881 INFO L168 Benchmark]: Boogie Preprocessor took 25.23 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 12:21:33,882 INFO L168 Benchmark]: RCFGBuilder took 227.45 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2018-11-18 12:21:33,882 INFO L168 Benchmark]: TraceAbstraction took 325.35 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: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. [2018-11-18 12:21:33,882 INFO L168 Benchmark]: Witness Printer took 3.29 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. [2018-11-18 12:21:33,884 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 159.51 ms. Allocated memory is still 1.0 GB. Free memory was 953.8 MB in the beginning and 940.3 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 56.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -200.9 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.23 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 227.45 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 325.35 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: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. * Witness Printer took 3.29 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 79, overapproximation of bitwiseAnd at line 23, overapproximation of someBinaryArithmeticFLOAToperation at line 43. Possible FailurePath: [L75] float x = 0.0f; VAL [x=0] [L76] CALL, EXPR round_float(x) VAL [\old(x)=0] [L13] __uint32_t w; [L15] int exponent_less_127; VAL [\old(x)=0, x=0] [L18] FCALL ieee_float_shape_type gf_u; [L19] FCALL gf_u.value = (x) [L20] EXPR, FCALL gf_u.word [L20] (w) = gf_u.word [L21] COND FALSE !(0) VAL [\old(x)=0, w=9, x=0] [L23] exponent_less_127 = (int)((w & 0x7f800000) >> 23) - 127 VAL [\old(x)=0, exponent_less_127=128, w=9, x=0] [L25] COND FALSE !(exponent_less_127 < 23) VAL [\old(x)=0, exponent_less_127=128, w=9, x=0] [L41] COND TRUE exponent_less_127 == 128 [L43] RET return x + x; VAL [\old(x)=0, exponent_less_127=128, w=9, x=0] [L76] EXPR round_float(x) VAL [round_float(x)=7, x=0] [L76] float res = round_float(x); [L79] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=7, res == 0.0f && __signbit_float(res) == 0=0, x=0] [L79] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L80] __VERIFIER_error() VAL [res=7, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 38 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 43 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=38occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 289 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: 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 0.1.23-5842f4b [2018-11-18 12:21:35,298 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 12:21:35,299 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 12:21:35,306 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 12:21:35,306 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 12:21:35,307 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 12:21:35,308 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 12:21:35,309 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 12:21:35,310 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 12:21:35,310 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 12:21:35,311 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 12:21:35,311 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 12:21:35,312 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 12:21:35,313 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 12:21:35,313 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 12:21:35,314 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 12:21:35,314 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 12:21:35,316 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 12:21:35,317 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 12:21:35,318 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 12:21:35,319 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 12:21:35,320 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 12:21:35,321 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 12:21:35,321 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 12:21:35,322 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 12:21:35,322 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 12:21:35,323 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 12:21:35,324 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 12:21:35,325 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 12:21:35,325 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 12:21:35,326 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 12:21:35,326 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 12:21:35,326 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 12:21:35,326 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 12:21:35,327 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 12:21:35,328 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 12:21:35,328 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b4bb1c64-ec48-4758-a10b-ce323d5d86b7/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-18 12:21:35,339 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 12:21:35,339 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 12:21:35,340 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 12:21:35,340 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 12:21:35,340 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 12:21:35,340 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 12:21:35,340 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 12:21:35,340 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 12:21:35,340 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 12:21:35,340 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 12:21:35,341 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 12:21:35,341 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 12:21:35,341 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 12:21:35,341 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 12:21:35,341 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 12:21:35,341 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 12:21:35,341 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 12:21:35,342 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 12:21:35,342 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 12:21:35,342 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 12:21:35,342 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 12:21:35,342 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 12:21:35,342 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 12:21:35,342 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 12:21:35,342 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 12:21:35,343 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 12:21:35,343 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 12:21:35,343 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 12:21:35,343 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 12:21:35,343 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 12:21:35,343 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 12:21:35,343 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-18 12:21:35,343 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 12:21:35,343 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 12:21:35,345 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 12:21:35,345 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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/working_dir_b4bb1c64-ec48-4758-a10b-ce323d5d86b7/bin-2019/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 -> 9a3696439220bbea1d6ed5ed3b22aa10206af5de [2018-11-18 12:21:35,373 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 12:21:35,381 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 12:21:35,383 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 12:21:35,384 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 12:21:35,384 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 12:21:35,385 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b4bb1c64-ec48-4758-a10b-ce323d5d86b7/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1032a_true-unreach-call.c [2018-11-18 12:21:35,420 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b4bb1c64-ec48-4758-a10b-ce323d5d86b7/bin-2019/utaipan/data/d44df0730/05b7fd58b1f249d8923b46430e5f570d/FLAGb0bc84609 [2018-11-18 12:21:35,814 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 12:21:35,815 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b4bb1c64-ec48-4758-a10b-ce323d5d86b7/sv-benchmarks/c/float-newlib/float_req_bl_1032a_true-unreach-call.c [2018-11-18 12:21:35,820 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b4bb1c64-ec48-4758-a10b-ce323d5d86b7/bin-2019/utaipan/data/d44df0730/05b7fd58b1f249d8923b46430e5f570d/FLAGb0bc84609 [2018-11-18 12:21:35,829 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b4bb1c64-ec48-4758-a10b-ce323d5d86b7/bin-2019/utaipan/data/d44df0730/05b7fd58b1f249d8923b46430e5f570d [2018-11-18 12:21:35,831 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 12:21:35,832 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 12:21:35,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 12:21:35,832 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 12:21:35,836 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 12:21:35,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:21:35" (1/1) ... [2018-11-18 12:21:35,838 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30b68c5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:21:35, skipping insertion in model container [2018-11-18 12:21:35,838 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:21:35" (1/1) ... [2018-11-18 12:21:35,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 12:21:35,861 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 12:21:35,987 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:21:35,991 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 12:21:36,012 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:21:36,027 INFO L195 MainTranslator]: Completed translation [2018-11-18 12:21:36,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:21:36 WrapperNode [2018-11-18 12:21:36,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 12:21:36,028 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 12:21:36,028 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 12:21:36,028 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 12:21:36,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:21:36" (1/1) ... [2018-11-18 12:21:36,040 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:21:36" (1/1) ... [2018-11-18 12:21:36,046 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 12:21:36,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 12:21:36,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 12:21:36,046 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 12:21:36,053 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:21:36" (1/1) ... [2018-11-18 12:21:36,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:21:36" (1/1) ... [2018-11-18 12:21:36,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:21:36" (1/1) ... [2018-11-18 12:21:36,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:21:36" (1/1) ... [2018-11-18 12:21:36,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:21:36" (1/1) ... [2018-11-18 12:21:36,069 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:21:36" (1/1) ... [2018-11-18 12:21:36,071 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:21:36" (1/1) ... [2018-11-18 12:21:36,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 12:21:36,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 12:21:36,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 12:21:36,074 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 12:21:36,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:21:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b4bb1c64-ec48-4758-a10b-ce323d5d86b7/bin-2019/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 [2018-11-18 12:21:36,144 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 12:21:36,145 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 12:21:36,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-11-18 12:21:36,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 12:21:36,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 12:21:36,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 12:21:36,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-18 12:21:36,145 INFO L130 BoogieDeclarations]: Found specification of procedure round_float [2018-11-18 12:21:36,145 INFO L138 BoogieDeclarations]: Found implementation of procedure round_float [2018-11-18 12:21:36,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 12:21:36,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 12:21:36,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-11-18 12:21:36,146 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-11-18 12:21:36,146 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-11-18 12:21:36,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-18 12:21:36,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 12:21:36,342 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 12:21:36,352 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 12:21:36,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:21:36 BoogieIcfgContainer [2018-11-18 12:21:36,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 12:21:36,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 12:21:36,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 12:21:36,355 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 12:21:36,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 12:21:35" (1/3) ... [2018-11-18 12:21:36,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6671621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:21:36, skipping insertion in model container [2018-11-18 12:21:36,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:21:36" (2/3) ... [2018-11-18 12:21:36,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6671621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:21:36, skipping insertion in model container [2018-11-18 12:21:36,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:21:36" (3/3) ... [2018-11-18 12:21:36,357 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1032a_true-unreach-call.c [2018-11-18 12:21:36,363 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 12:21:36,368 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 12:21:36,379 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 12:21:36,396 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 12:21:36,397 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 12:21:36,397 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 12:21:36,397 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 12:21:36,397 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 12:21:36,397 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 12:21:36,397 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 12:21:36,397 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 12:21:36,397 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 12:21:36,407 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2018-11-18 12:21:36,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-18 12:21:36,410 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:21:36,411 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:21:36,412 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:21:36,415 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:21:36,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1066529686, now seen corresponding path program 1 times [2018-11-18 12:21:36,417 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:21:36,418 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b4bb1c64-ec48-4758-a10b-ce323d5d86b7/bin-2019/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 [2018-11-18 12:21:36,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:21:36,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:21:36,468 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:21:36,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:21:36,480 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:21:36,489 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:21:36,489 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 12:21:36,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 12:21:36,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 12:21:36,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 12:21:36,500 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2018-11-18 12:21:36,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:21:36,513 INFO L93 Difference]: Finished difference Result 68 states and 93 transitions. [2018-11-18 12:21:36,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 12:21:36,514 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-11-18 12:21:36,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:21:36,522 INFO L225 Difference]: With dead ends: 68 [2018-11-18 12:21:36,522 INFO L226 Difference]: Without dead ends: 34 [2018-11-18 12:21:36,525 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 12:21:36,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-18 12:21:36,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-11-18 12:21:36,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-18 12:21:36,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2018-11-18 12:21:36,552 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 18 [2018-11-18 12:21:36,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:21:36,552 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2018-11-18 12:21:36,552 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 12:21:36,552 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2018-11-18 12:21:36,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-18 12:21:36,553 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:21:36,553 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:21:36,553 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:21:36,554 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:21:36,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1883902620, now seen corresponding path program 1 times [2018-11-18 12:21:36,554 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:21:36,554 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b4bb1c64-ec48-4758-a10b-ce323d5d86b7/bin-2019/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 [2018-11-18 12:21:36,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:21:36,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:21:36,606 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:21:36,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:21:36,713 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:21:36,721 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:21:36,722 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 12:21:36,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 12:21:36,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 12:21:36,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-18 12:21:36,723 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 7 states. [2018-11-18 12:21:37,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:21:37,049 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2018-11-18 12:21:37,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 12:21:37,051 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-11-18 12:21:37,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:21:37,053 INFO L225 Difference]: With dead ends: 51 [2018-11-18 12:21:37,053 INFO L226 Difference]: Without dead ends: 35 [2018-11-18 12:21:37,054 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-11-18 12:21:37,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-18 12:21:37,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-11-18 12:21:37,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-18 12:21:37,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2018-11-18 12:21:37,058 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 19 [2018-11-18 12:21:37,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:21:37,058 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2018-11-18 12:21:37,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 12:21:37,058 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2018-11-18 12:21:37,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-18 12:21:37,059 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:21:37,059 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:21:37,059 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:21:37,059 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:21:37,059 INFO L82 PathProgramCache]: Analyzing trace with hash 407428667, now seen corresponding path program 1 times [2018-11-18 12:21:37,060 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:21:37,060 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b4bb1c64-ec48-4758-a10b-ce323d5d86b7/bin-2019/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 [2018-11-18 12:21:37,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:21:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:21:37,090 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:21:37,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:21:37,150 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:21:37,157 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:21:37,157 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 12:21:37,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 12:21:37,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 12:21:37,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-18 12:21:37,158 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 7 states. [2018-11-18 12:21:37,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:21:37,458 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2018-11-18 12:21:37,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 12:21:37,459 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2018-11-18 12:21:37,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:21:37,460 INFO L225 Difference]: With dead ends: 53 [2018-11-18 12:21:37,460 INFO L226 Difference]: Without dead ends: 32 [2018-11-18 12:21:37,461 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-11-18 12:21:37,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-18 12:21:37,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-11-18 12:21:37,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-18 12:21:37,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2018-11-18 12:21:37,464 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 20 [2018-11-18 12:21:37,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:21:37,464 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2018-11-18 12:21:37,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 12:21:37,464 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2018-11-18 12:21:37,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 12:21:37,465 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:21:37,465 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:21:37,465 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:21:37,465 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:21:37,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1907366819, now seen corresponding path program 1 times [2018-11-18 12:21:37,466 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:21:37,466 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b4bb1c64-ec48-4758-a10b-ce323d5d86b7/bin-2019/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 [2018-11-18 12:21:37,473 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:21:37,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:21:37,499 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:21:37,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:21:37,567 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:21:37,574 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:21:37,574 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 12:21:37,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 12:21:37,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 12:21:37,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-18 12:21:37,575 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 7 states. [2018-11-18 12:21:37,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:21:37,751 INFO L93 Difference]: Finished difference Result 50 states and 51 transitions. [2018-11-18 12:21:37,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 12:21:37,752 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2018-11-18 12:21:37,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:21:37,752 INFO L225 Difference]: With dead ends: 50 [2018-11-18 12:21:37,752 INFO L226 Difference]: Without dead ends: 32 [2018-11-18 12:21:37,752 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-11-18 12:21:37,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-18 12:21:37,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-11-18 12:21:37,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-18 12:21:37,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-11-18 12:21:37,755 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 23 [2018-11-18 12:21:37,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:21:37,755 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-11-18 12:21:37,755 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 12:21:37,755 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-11-18 12:21:37,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 12:21:37,756 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:21:37,756 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:21:37,756 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:21:37,756 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:21:37,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1994573467, now seen corresponding path program 1 times [2018-11-18 12:21:37,757 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:21:37,757 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b4bb1c64-ec48-4758-a10b-ce323d5d86b7/bin-2019/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 [2018-11-18 12:21:37,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:21:37,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:21:37,782 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:21:37,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:21:37,836 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:21:37,843 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:21:37,843 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 12:21:37,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 12:21:37,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 12:21:37,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-18 12:21:37,845 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 7 states. [2018-11-18 12:21:37,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:21:37,913 INFO L93 Difference]: Finished difference Result 35 states and 34 transitions. [2018-11-18 12:21:37,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 12:21:37,913 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2018-11-18 12:21:37,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:21:37,914 INFO L225 Difference]: With dead ends: 35 [2018-11-18 12:21:37,914 INFO L226 Difference]: Without dead ends: 32 [2018-11-18 12:21:37,914 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-18 12:21:37,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-18 12:21:37,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-11-18 12:21:37,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-18 12:21:37,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 31 transitions. [2018-11-18 12:21:37,918 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 31 transitions. Word has length 23 [2018-11-18 12:21:37,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:21:37,918 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 31 transitions. [2018-11-18 12:21:37,918 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 12:21:37,918 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 31 transitions. [2018-11-18 12:21:37,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-18 12:21:37,919 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:21:37,919 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:21:37,919 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:21:37,920 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:21:37,920 INFO L82 PathProgramCache]: Analyzing trace with hash -123559228, now seen corresponding path program 1 times [2018-11-18 12:21:37,920 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:21:37,920 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b4bb1c64-ec48-4758-a10b-ce323d5d86b7/bin-2019/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-11-18 12:21:37,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:21:37,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:21:37,963 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:21:38,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:21:38,256 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:21:38,263 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:21:38,263 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-11-18 12:21:38,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-18 12:21:38,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-18 12:21:38,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-11-18 12:21:38,264 INFO L87 Difference]: Start difference. First operand 32 states and 31 transitions. Second operand 15 states. [2018-11-18 12:21:38,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:21:38,803 INFO L93 Difference]: Finished difference Result 32 states and 31 transitions. [2018-11-18 12:21:38,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-18 12:21:38,803 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 31 [2018-11-18 12:21:38,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:21:38,803 INFO L225 Difference]: With dead ends: 32 [2018-11-18 12:21:38,803 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 12:21:38,804 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2018-11-18 12:21:38,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 12:21:38,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 12:21:38,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 12:21:38,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 12:21:38,805 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2018-11-18 12:21:38,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:21:38,805 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 12:21:38,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-18 12:21:38,805 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 12:21:38,805 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 12:21:38,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 12:21:38,860 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-18 12:21:38,860 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-18 12:21:38,860 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 12:21:38,860 INFO L428 ceAbstractionStarter]: At program point round_floatENTRY(lines 12 53) the Hoare annotation is: true [2018-11-18 12:21:38,860 INFO L425 ceAbstractionStarter]: For program point L33(lines 33 35) no Hoare annotation was computed. [2018-11-18 12:21:38,860 INFO L425 ceAbstractionStarter]: For program point L25(lines 25 46) no Hoare annotation was computed. [2018-11-18 12:21:38,861 INFO L425 ceAbstractionStarter]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2018-11-18 12:21:38,861 INFO L421 ceAbstractionStarter]: At program point L17-3(lines 17 21) the Hoare annotation is: (= round_float_~x |round_float_#in~x|) [2018-11-18 12:21:38,861 INFO L425 ceAbstractionStarter]: For program point L17-4(lines 17 21) no Hoare annotation was computed. [2018-11-18 12:21:38,861 INFO L425 ceAbstractionStarter]: For program point round_floatFINAL(lines 12 53) no Hoare annotation was computed. [2018-11-18 12:21:38,861 INFO L425 ceAbstractionStarter]: For program point round_floatEXIT(lines 12 53) no Hoare annotation was computed. [2018-11-18 12:21:38,861 INFO L425 ceAbstractionStarter]: For program point L28(lines 28 30) no Hoare annotation was computed. [2018-11-18 12:21:38,861 INFO L425 ceAbstractionStarter]: For program point L26(lines 26 39) no Hoare annotation was computed. [2018-11-18 12:21:38,861 INFO L425 ceAbstractionStarter]: For program point L47(lines 47 51) no Hoare annotation was computed. [2018-11-18 12:21:38,862 INFO L425 ceAbstractionStarter]: For program point L47-2(lines 12 53) no Hoare annotation was computed. [2018-11-18 12:21:38,862 INFO L425 ceAbstractionStarter]: For program point L47-3(lines 47 51) no Hoare annotation was computed. [2018-11-18 12:21:38,862 INFO L425 ceAbstractionStarter]: For program point L41(lines 41 45) no Hoare annotation was computed. [2018-11-18 12:21:38,862 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 12:21:38,862 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 12:21:38,862 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 12:21:38,862 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 12:21:38,862 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 67 85) the Hoare annotation is: true [2018-11-18 12:21:38,862 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 80) no Hoare annotation was computed. [2018-11-18 12:21:38,862 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 67 85) no Hoare annotation was computed. [2018-11-18 12:21:38,863 INFO L425 ceAbstractionStarter]: For program point L80(line 80) no Hoare annotation was computed. [2018-11-18 12:21:38,863 INFO L425 ceAbstractionStarter]: For program point L79(line 79) no Hoare annotation was computed. [2018-11-18 12:21:38,863 INFO L421 ceAbstractionStarter]: At program point L79-1(line 79) the Hoare annotation is: (and |main_#t~short8| (= (_ +zero 8 24) main_~x~0) (exists ((v_round_float_~w~0_14 (_ BitVec 32))) (and (= (_ +zero 8 24) (fp ((_ extract 31 31) v_round_float_~w~0_14) ((_ extract 30 23) v_round_float_~w~0_14) ((_ extract 22 0) v_round_float_~w~0_14))) (= main_~res~0 (let ((.cse0 (bvand (_ bv2147483648 32) v_round_float_~w~0_14))) (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0))))))) [2018-11-18 12:21:38,863 INFO L425 ceAbstractionStarter]: For program point L79-2(line 79) no Hoare annotation was computed. [2018-11-18 12:21:38,863 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 67 85) no Hoare annotation was computed. [2018-11-18 12:21:38,863 INFO L421 ceAbstractionStarter]: At program point L76(line 76) the Hoare annotation is: (= (_ +zero 8 24) main_~x~0) [2018-11-18 12:21:38,863 INFO L425 ceAbstractionStarter]: For program point L76-1(line 76) no Hoare annotation was computed. [2018-11-18 12:21:38,863 INFO L425 ceAbstractionStarter]: For program point L79-4(lines 79 82) no Hoare annotation was computed. [2018-11-18 12:21:38,863 INFO L425 ceAbstractionStarter]: For program point L58-1(lines 58 62) no Hoare annotation was computed. [2018-11-18 12:21:38,864 INFO L425 ceAbstractionStarter]: For program point __signbit_floatFINAL(lines 55 65) no Hoare annotation was computed. [2018-11-18 12:21:38,864 INFO L421 ceAbstractionStarter]: At program point L58-3(lines 58 62) the Hoare annotation is: (= |__signbit_float_#in~x| __signbit_float_~x) [2018-11-18 12:21:38,864 INFO L425 ceAbstractionStarter]: For program point L58-4(lines 58 62) no Hoare annotation was computed. [2018-11-18 12:21:38,864 INFO L428 ceAbstractionStarter]: At program point __signbit_floatENTRY(lines 55 65) the Hoare annotation is: true [2018-11-18 12:21:38,864 INFO L425 ceAbstractionStarter]: For program point __signbit_floatEXIT(lines 55 65) no Hoare annotation was computed. [2018-11-18 12:21:38,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 12:21:38 BoogieIcfgContainer [2018-11-18 12:21:38,872 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 12:21:38,873 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 12:21:38,873 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 12:21:38,873 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 12:21:38,873 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:21:36" (3/4) ... [2018-11-18 12:21:38,876 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 12:21:38,880 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 12:21:38,880 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure round_float [2018-11-18 12:21:38,880 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 12:21:38,880 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_float [2018-11-18 12:21:38,884 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2018-11-18 12:21:38,884 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-18 12:21:38,884 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 12:21:38,901 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: x == \old(x) [2018-11-18 12:21:38,901 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-11-18 12:21:38,918 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_b4bb1c64-ec48-4758-a10b-ce323d5d86b7/bin-2019/utaipan/witness.graphml [2018-11-18 12:21:38,918 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 12:21:38,919 INFO L168 Benchmark]: Toolchain (without parser) took 3087.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 950.8 MB in the beginning and 835.6 MB in the end (delta: 115.3 MB). Peak memory consumption was 239.0 MB. Max. memory is 11.5 GB. [2018-11-18 12:21:38,920 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:21:38,920 INFO L168 Benchmark]: CACSL2BoogieTranslator took 195.05 ms. Allocated memory is still 1.0 GB. Free memory was 950.8 MB in the beginning and 933.6 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. [2018-11-18 12:21:38,921 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.17 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:21:38,921 INFO L168 Benchmark]: Boogie Preprocessor took 27.16 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:21:38,921 INFO L168 Benchmark]: RCFGBuilder took 279.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -158.9 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. [2018-11-18 12:21:38,921 INFO L168 Benchmark]: TraceAbstraction took 2519.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 835.6 MB in the end (delta: 257.0 MB). Peak memory consumption was 257.0 MB. Max. memory is 11.5 GB. [2018-11-18 12:21:38,922 INFO L168 Benchmark]: Witness Printer took 45.46 ms. Allocated memory is still 1.2 GB. Free memory is still 835.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:21:38,926 INFO L336 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 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 195.05 ms. Allocated memory is still 1.0 GB. Free memory was 950.8 MB in the beginning and 933.6 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 18.17 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.16 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 279.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -158.9 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2519.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 835.6 MB in the end (delta: 257.0 MB). Peak memory consumption was 257.0 MB. Max. memory is 11.5 GB. * Witness Printer took 45.46 ms. Allocated memory is still 1.2 GB. Free memory is still 835.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 80]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: x == \old(x) - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: \old(x) == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 38 locations, 1 error locations. SAFE Result, 2.4s OverallTime, 6 OverallIterations, 1 TraceHistogramMax, 1.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 168 SDtfs, 124 SDslu, 630 SDs, 0 SdLazy, 310 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 154 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 18 PreInvPairs, 21 NumberOfFragments, 46 HoareAnnotationTreeSize, 18 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 134 NumberOfCodeBlocks, 134 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 128 ConstructedInterpolants, 35 QuantifiedInterpolants, 22710 SizeOfPredicates, 23 NumberOfNonLiveVariables, 337 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...