/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1270d_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 40ef5092 Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1270d_true-unreach-call.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5fe31b16a9cb808afe0897c04a27b4a4516ff173 ................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1270d_true-unreach-call.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5fe31b16a9cb808afe0897c04a27b4a4516ff173 .................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken --- Real Ultimate output --- This is Ultimate 0.1.23-40ef509 [2018-09-20 15:32:01,970 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 15:32:01,974 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 15:32:01,991 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 15:32:01,991 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 15:32:01,992 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 15:32:01,993 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 15:32:01,995 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 15:32:01,996 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 15:32:02,000 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 15:32:02,001 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 15:32:02,001 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 15:32:02,002 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 15:32:02,003 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 15:32:02,006 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 15:32:02,007 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 15:32:02,008 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 15:32:02,012 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 15:32:02,017 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 15:32:02,022 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 15:32:02,025 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 15:32:02,026 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 15:32:02,034 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 15:32:02,034 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 15:32:02,034 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 15:32:02,035 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 15:32:02,037 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 15:32:02,037 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 15:32:02,038 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 15:32:02,042 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 15:32:02,044 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 15:32:02,045 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 15:32:02,045 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 15:32:02,048 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 15:32:02,050 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 15:32:02,050 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 15:32:02,051 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-20 15:32:02,072 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 15:32:02,075 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 15:32:02,076 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 15:32:02,076 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 15:32:02,077 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 15:32:02,077 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 15:32:02,077 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 15:32:02,077 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 15:32:02,077 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 15:32:02,079 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-20 15:32:02,079 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 15:32:02,079 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 15:32:02,079 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 15:32:02,079 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 15:32:02,080 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 15:32:02,080 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 15:32:02,080 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 15:32:02,080 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 15:32:02,080 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 15:32:02,083 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 15:32:02,083 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 15:32:02,083 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 15:32:02,083 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 15:32:02,083 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 15:32:02,083 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 15:32:02,084 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 15:32:02,084 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-20 15:32:02,084 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 15:32:02,084 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-20 15:32:02,084 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> Automizer 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 -> 5fe31b16a9cb808afe0897c04a27b4a4516ff173 [2018-09-20 15:32:02,157 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 15:32:02,175 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 15:32:02,179 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 15:32:02,180 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 15:32:02,180 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 15:32:02,182 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1270d_true-unreach-call.c [2018-09-20 15:32:02,529 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db0e50224/92c892aac73240bfab297aab514a46f8/FLAG85a783570 [2018-09-20 15:32:02,685 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 15:32:02,685 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1270d_true-unreach-call.c [2018-09-20 15:32:02,694 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db0e50224/92c892aac73240bfab297aab514a46f8/FLAG85a783570 [2018-09-20 15:32:02,716 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db0e50224/92c892aac73240bfab297aab514a46f8 [2018-09-20 15:32:02,719 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 15:32:02,723 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 15:32:02,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 15:32:02,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 15:32:02,730 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 15:32:02,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:32:02" (1/1) ... [2018-09-20 15:32:02,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45d5fda7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:32:02, skipping insertion in model container [2018-09-20 15:32:02,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:32:02" (1/1) ... [2018-09-20 15:32:02,744 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 15:32:03,045 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:32:03,064 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 15:32:03,114 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:32:03,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:32:03 WrapperNode [2018-09-20 15:32:03,156 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 15:32:03,157 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 15:32:03,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 15:32:03,157 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 15:32:03,177 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:32:03" (1/1) ... [2018-09-20 15:32:03,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:32:03" (1/1) ... [2018-09-20 15:32:03,194 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:32:03" (1/1) ... [2018-09-20 15:32:03,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:32:03" (1/1) ... [2018-09-20 15:32:03,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:32:03" (1/1) ... [2018-09-20 15:32:03,245 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:32:03" (1/1) ... [2018-09-20 15:32:03,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:32:03" (1/1) ... [2018-09-20 15:32:03,256 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 15:32:03,256 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 15:32:03,257 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 15:32:03,257 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 15:32:03,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:32:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-09-20 15:32:03,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 15:32:03,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 15:32:03,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2018-09-20 15:32:03,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_hypotf [2018-09-20 15:32:03,429 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2018-09-20 15:32:03,429 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 15:32:03,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 15:32:03,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-20 15:32:03,433 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2018-09-20 15:32:03,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-20 15:32:03,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-09-20 15:32:03,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-09-20 15:32:03,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-20 15:32:03,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-09-20 15:32:03,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-09-20 15:32:03,434 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_hypotf [2018-09-20 15:32:03,435 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2018-09-20 15:32:03,435 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 15:32:03,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 15:32:03,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 15:32:03,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-09-20 15:32:03,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-09-20 15:32:04,781 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 15:32:04,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:32:04 BoogieIcfgContainer [2018-09-20 15:32:04,781 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 15:32:04,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 15:32:04,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 15:32:04,785 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 15:32:04,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 03:32:02" (1/3) ... [2018-09-20 15:32:04,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68e7f072 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:32:04, skipping insertion in model container [2018-09-20 15:32:04,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:32:03" (2/3) ... [2018-09-20 15:32:04,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68e7f072 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:32:04, skipping insertion in model container [2018-09-20 15:32:04,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:32:04" (3/3) ... [2018-09-20 15:32:04,789 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1270d_true-unreach-call.c [2018-09-20 15:32:04,800 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 15:32:04,810 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-20 15:32:04,867 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 15:32:04,868 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 15:32:04,868 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 15:32:04,868 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 15:32:04,869 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 15:32:04,869 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 15:32:04,869 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 15:32:04,869 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 15:32:04,869 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 15:32:04,897 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states. [2018-09-20 15:32:04,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-09-20 15:32:04,908 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:32:04,909 INFO L376 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] [2018-09-20 15:32:04,912 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:32:04,918 INFO L82 PathProgramCache]: Analyzing trace with hash 2013009825, now seen corresponding path program 1 times [2018-09-20 15:32:04,920 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 15:32:04,921 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 15:32:04,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:32:04,982 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:32:04,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:32:05,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:32:05,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:32:05,091 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:32:05,091 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-20 15:32:05,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-20 15:32:05,111 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-20 15:32:05,112 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-20 15:32:05,114 INFO L87 Difference]: Start difference. First operand 232 states. Second operand 2 states. [2018-09-20 15:32:05,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:32:05,168 INFO L93 Difference]: Finished difference Result 456 states and 573 transitions. [2018-09-20 15:32:05,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-20 15:32:05,170 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 28 [2018-09-20 15:32:05,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:32:05,185 INFO L225 Difference]: With dead ends: 456 [2018-09-20 15:32:05,185 INFO L226 Difference]: Without dead ends: 228 [2018-09-20 15:32:05,192 INFO L606 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 [2018-09-20 15:32:05,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-09-20 15:32:05,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2018-09-20 15:32:05,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-09-20 15:32:05,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 250 transitions. [2018-09-20 15:32:05,262 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 250 transitions. Word has length 28 [2018-09-20 15:32:05,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:32:05,263 INFO L480 AbstractCegarLoop]: Abstraction has 228 states and 250 transitions. [2018-09-20 15:32:05,263 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-20 15:32:05,263 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 250 transitions. [2018-09-20 15:32:05,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-09-20 15:32:05,267 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:32:05,268 INFO L376 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:32:05,268 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:32:05,269 INFO L82 PathProgramCache]: Analyzing trace with hash 237649631, now seen corresponding path program 1 times [2018-09-20 15:32:05,269 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 15:32:05,269 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 15:32:05,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:32:05,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:32:05,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:32:05,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 15:32:05,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 15:32:05,573 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-20 15:32:05,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 03:32:05 BoogieIcfgContainer [2018-09-20 15:32:05,654 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-20 15:32:05,655 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-20 15:32:05,655 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-20 15:32:05,655 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-20 15:32:05,656 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:32:04" (3/4) ... [2018-09-20 15:32:05,661 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-20 15:32:05,661 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-20 15:32:05,662 INFO L168 Benchmark]: Toolchain (without parser) took 2942.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 951.9 MB in the beginning and 1.0 GB in the end (delta: -93.4 MB). Peak memory consumption was 54.0 MB. Max. memory is 11.5 GB. [2018-09-20 15:32:05,666 INFO L168 Benchmark]: CDTParser took 0.25 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. [2018-09-20 15:32:05,666 INFO L168 Benchmark]: CACSL2BoogieTranslator took 432.53 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 935.8 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-09-20 15:32:05,667 INFO L168 Benchmark]: Boogie Preprocessor took 99.38 ms. Allocated memory is still 1.0 GB. Free memory was 935.8 MB in the beginning and 930.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-09-20 15:32:05,668 INFO L168 Benchmark]: RCFGBuilder took 1525.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 930.4 MB in the beginning and 1.1 GB in the end (delta: -155.8 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2018-09-20 15:32:05,670 INFO L168 Benchmark]: TraceAbstraction took 871.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 41.0 MB). Peak memory consumption was 41.0 MB. Max. memory is 11.5 GB. [2018-09-20 15:32:05,671 INFO L168 Benchmark]: Witness Printer took 6.82 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 15:32:05,677 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 432.53 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 935.8 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 99.38 ms. Allocated memory is still 1.0 GB. Free memory was 935.8 MB in the beginning and 930.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1525.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 930.4 MB in the beginning and 1.1 GB in the end (delta: -155.8 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 871.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 41.0 MB). Peak memory consumption was 41.0 MB. Max. memory is 11.5 GB. * Witness Printer took 6.82 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 234]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 118, overapproximation of bitwiseAnd at line 218. Possible FailurePath: [L12] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; VAL [\old(one_sqrt)=10737418247, \old(tiny_sqrt)=10737418252, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L229] float x = __VERIFIER_nondet_float(); [L230] float y = -1.0f / 0.0f; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418244] [L231] CALL, EXPR __ieee754_hypotf(x, y) VAL [\old(x)=10737418244, \old(y)=10737418245, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L82] float a = x, b = y, t1, t2, y1, y2, w; [L82] float a = x, b = y, t1, t2, y1, y2, w; [L82] float a = x, b = y, t1, t2, y1, y2, w; [L83] __int32_t j, k, ha, hb; VAL [\old(x)=10737418244, \old(y)=10737418245, a=10737418244, b=10737418245, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418244, y=10737418245] [L86] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=10737418244, \old(y)=10737418245, a=10737418244, b=10737418245, gf_u={10737418250:0}, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418244, y=10737418245] [L87] FCALL gf_u.value = (x) VAL [\old(x)=10737418244, \old(y)=10737418245, a=10737418244, b=10737418245, gf_u={10737418250:0}, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418244, y=10737418245] [L88] EXPR, FCALL gf_u.word VAL [\old(x)=10737418244, \old(y)=10737418245, a=10737418244, b=10737418245, gf_u={10737418250:0}, gf_u.word=6442450944, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418244, y=10737418245] [L88] (ha) = gf_u.word VAL [\old(x)=10737418244, \old(y)=10737418245, a=10737418244, b=10737418245, gf_u={10737418250:0}, gf_u.word=6442450944, ha=-2147483648, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418244, y=10737418245] [L88] FCALL (ha) = gf_u.word VAL [(ha) = gf_u.word=10737418248, \old(x)=10737418244, \old(y)=10737418245, a=10737418244, b=10737418245, gf_u={10737418250:0}, gf_u.word=6442450944, ha=-2147483648, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418244, y=10737418245] [L89] COND FALSE !(0) VAL [\old(x)=10737418244, \old(y)=10737418245, a=10737418244, b=10737418245, ha=-2147483648, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418244, y=10737418245] [L90] ha &= 0x7fffffffL VAL [\old(x)=10737418244, \old(y)=10737418245, a=10737418244, b=10737418245, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418244, y=10737418245] [L92] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=10737418244, \old(y)=10737418245, a=10737418244, b=10737418245, gf_u={10737418255:0}, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418244, y=10737418245] [L93] FCALL gf_u.value = (y) VAL [\old(x)=10737418244, \old(y)=10737418245, a=10737418244, b=10737418245, gf_u={10737418255:0}, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418244, y=10737418245] [L94] EXPR, FCALL gf_u.word VAL [\old(x)=10737418244, \old(y)=10737418245, a=10737418244, b=10737418245, gf_u={10737418255:0}, gf_u.word=10737418240, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418244, y=10737418245] [L94] (hb) = gf_u.word VAL [\old(x)=10737418244, \old(y)=10737418245, a=10737418244, b=10737418245, gf_u={10737418255:0}, gf_u.word=10737418240, hb=-2147483648, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418244, y=10737418245] [L94] FCALL (hb) = gf_u.word VAL [(hb) = gf_u.word=10737418256, \old(x)=10737418244, \old(y)=10737418245, a=10737418244, b=10737418245, gf_u={10737418255:0}, gf_u.word=10737418240, hb=-2147483648, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418244, y=10737418245] [L95] COND FALSE !(0) VAL [\old(x)=10737418244, \old(y)=10737418245, a=10737418244, b=10737418245, hb=-2147483648, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418244, y=10737418245] [L96] hb &= 0x7fffffffL VAL [\old(x)=10737418244, \old(y)=10737418245, a=10737418244, b=10737418245, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418244, y=10737418245] [L97] COND TRUE hb > ha [L98] a = y [L99] b = x [L100] j = ha [L101] ha = hb [L102] hb = j VAL [\old(x)=10737418244, \old(y)=10737418245, a=10737418245, b=10737418244, ha=251658240, hb=-1, j=-1, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418244, y=10737418245] [L108] FCALL ieee_float_shape_type sf_u; VAL [\old(x)=10737418244, \old(y)=10737418245, a=10737418245, b=10737418244, ha=251658240, hb=-1, j=-1, one_sqrt=1, sf_u={10737418246:0}, tiny_sqrt=1/1000000000000000000000000000000, x=10737418244, y=10737418245] [L109] FCALL sf_u.word = (ha) VAL [\old(x)=10737418244, \old(y)=10737418245, a=10737418245, b=10737418244, ha=251658240, hb=-1, j=-1, one_sqrt=1, sf_u={10737418246:0}, tiny_sqrt=1/1000000000000000000000000000000, x=10737418244, y=10737418245] [L110] EXPR, FCALL sf_u.value VAL [\old(x)=10737418244, \old(y)=10737418245, a=10737418245, b=10737418244, ha=251658240, hb=-1, j=-1, one_sqrt=1, sf_u={10737418246:0}, sf_u.value=10737418257, tiny_sqrt=1/1000000000000000000000000000000, x=10737418244, y=10737418245] [L110] (a) = sf_u.value VAL [\old(x)=10737418244, \old(y)=10737418245, a=10737418257, b=10737418244, ha=251658240, hb=-1, j=-1, one_sqrt=1, sf_u={10737418246:0}, sf_u.value=10737418257, tiny_sqrt=1/1000000000000000000000000000000, x=10737418244, y=10737418245] [L110] FCALL (a) = sf_u.value VAL [(a) = sf_u.value=10737418254, \old(x)=10737418244, \old(y)=10737418245, a=10737418257, b=10737418244, ha=251658240, hb=-1, j=-1, one_sqrt=1, sf_u={10737418246:0}, sf_u.value=10737418257, tiny_sqrt=1/1000000000000000000000000000000, x=10737418244, y=10737418245] [L111] COND FALSE !(0) VAL [\old(x)=10737418244, \old(y)=10737418245, a=10737418257, b=10737418244, ha=251658240, hb=-1, j=-1, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418244, y=10737418245] [L113] FCALL ieee_float_shape_type sf_u; VAL [\old(x)=10737418244, \old(y)=10737418245, a=10737418257, b=10737418244, ha=251658240, hb=-1, j=-1, one_sqrt=1, sf_u={10737418255:0}, tiny_sqrt=1/1000000000000000000000000000000, x=10737418244, y=10737418245] [L114] FCALL sf_u.word = (hb) VAL [\old(x)=10737418244, \old(y)=10737418245, a=10737418257, b=10737418244, ha=251658240, hb=-1, j=-1, one_sqrt=1, sf_u={10737418255:0}, tiny_sqrt=1/1000000000000000000000000000000, x=10737418244, y=10737418245] [L115] EXPR, FCALL sf_u.value VAL [\old(x)=10737418244, \old(y)=10737418245, a=10737418257, b=10737418244, ha=251658240, hb=-1, j=-1, one_sqrt=1, sf_u={10737418255:0}, sf_u.value=10737418256, tiny_sqrt=1/1000000000000000000000000000000, x=10737418244, y=10737418245] [L115] (b) = sf_u.value VAL [\old(x)=10737418244, \old(y)=10737418245, a=10737418257, b=10737418256, ha=251658240, hb=-1, j=-1, one_sqrt=1, sf_u={10737418255:0}, sf_u.value=10737418256, tiny_sqrt=1/1000000000000000000000000000000, x=10737418244, y=10737418245] [L115] FCALL (b) = sf_u.value VAL [(b) = sf_u.value=10737418253, \old(x)=10737418244, \old(y)=10737418245, a=10737418257, b=10737418256, ha=251658240, hb=-1, j=-1, one_sqrt=1, sf_u={10737418255:0}, sf_u.value=10737418256, tiny_sqrt=1/1000000000000000000000000000000, x=10737418244, y=10737418245] [L116] COND FALSE !(0) VAL [\old(x)=10737418244, \old(y)=10737418245, a=10737418257, b=10737418256, ha=251658240, hb=-1, j=-1, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418244, y=10737418245] [L117] COND TRUE (ha - hb) > 0xf000000L [L118] RET return a + b; VAL [\old(x)=10737418244, \old(y)=10737418245, a=10737418257, b=10737418256, ha=251658240, hb=-1, j=-1, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418244, y=10737418245] [L231] EXPR __ieee754_hypotf(x, y) VAL [__ieee754_hypotf(x, y)=10737418241, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418244, y=10737418245] [L231] float res = __ieee754_hypotf(x, y); [L233] CALL, EXPR isinf_float(res) VAL [\old(x)=10737418241, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L212] __int32_t ix; VAL [\old(x)=10737418241, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418241] [L214] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=10737418241, gf_u={10737418243:0}, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418241] [L215] FCALL gf_u.value = (x) VAL [\old(x)=10737418241, gf_u={10737418243:0}, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418241] [L216] EXPR, FCALL gf_u.word VAL [\old(x)=10737418241, gf_u={10737418243:0}, gf_u.word=-6442450944, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418241] [L216] (ix) = gf_u.word VAL [\old(x)=10737418241, gf_u={10737418243:0}, gf_u.word=-6442450944, ix=-2147483648, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418241] [L216] FCALL (ix) = gf_u.word VAL [(ix) = gf_u.word=10737418251, \old(x)=10737418241, gf_u={10737418243:0}, gf_u.word=-6442450944, ix=-2147483648, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418241] [L217] COND FALSE !(0) VAL [\old(x)=10737418241, ix=-2147483648, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418241] [L218] ix &= 0x7fffffff [L219] RET return ((ix) == 0x7f800000L); VAL [\old(x)=10737418241, \result=0, ix=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418241] [L233] EXPR isinf_float(res) VAL [isinf_float(res)=0, one_sqrt=1, res=10737418241, tiny_sqrt=1/1000000000000000000000000000000, x=10737418244, y=10737418245] [L233] COND TRUE !isinf_float(res) [L234] __VERIFIER_error() VAL [one_sqrt=1, res=10737418241, tiny_sqrt=1/1000000000000000000000000000000, x=10737418244, y=10737418245] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 232 locations, 1 error locations. UNSAFE Result, 0.7s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 254 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=232occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 729 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 0.1.23-40ef509 [2018-09-20 15:32:08,097 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 15:32:08,102 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 15:32:08,122 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 15:32:08,123 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 15:32:08,125 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 15:32:08,127 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 15:32:08,130 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 15:32:08,134 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 15:32:08,141 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 15:32:08,142 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 15:32:08,143 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 15:32:08,144 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 15:32:08,145 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 15:32:08,147 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 15:32:08,147 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 15:32:08,148 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 15:32:08,151 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 15:32:08,153 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 15:32:08,155 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 15:32:08,156 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 15:32:08,157 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 15:32:08,160 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 15:32:08,160 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 15:32:08,160 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 15:32:08,161 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 15:32:08,163 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 15:32:08,164 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 15:32:08,165 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 15:32:08,166 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 15:32:08,166 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 15:32:08,167 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 15:32:08,167 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 15:32:08,168 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 15:32:08,169 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 15:32:08,170 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 15:32:08,170 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-20 15:32:08,198 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 15:32:08,198 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 15:32:08,200 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 15:32:08,200 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 15:32:08,201 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 15:32:08,201 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 15:32:08,202 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 15:32:08,202 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 15:32:08,202 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 15:32:08,202 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 15:32:08,202 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 15:32:08,202 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 15:32:08,203 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 15:32:08,203 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 15:32:08,203 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-20 15:32:08,203 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-20 15:32:08,203 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 15:32:08,205 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 15:32:08,205 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 15:32:08,205 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 15:32:08,206 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 15:32:08,206 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 15:32:08,206 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 15:32:08,206 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 15:32:08,207 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 15:32:08,207 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 15:32:08,208 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 15:32:08,208 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-20 15:32:08,208 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 15:32:08,208 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-20 15:32:08,208 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-20 15:32:08,209 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> Automizer 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 -> 5fe31b16a9cb808afe0897c04a27b4a4516ff173 [2018-09-20 15:32:08,278 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 15:32:08,295 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 15:32:08,299 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 15:32:08,300 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 15:32:08,301 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 15:32:08,302 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1270d_true-unreach-call.c [2018-09-20 15:32:08,683 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37a17b35b/0fb2651cd9bb4b0e9086e2022c4d2b86/FLAGc8f481132 [2018-09-20 15:32:08,904 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 15:32:08,905 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1270d_true-unreach-call.c [2018-09-20 15:32:08,919 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37a17b35b/0fb2651cd9bb4b0e9086e2022c4d2b86/FLAGc8f481132 [2018-09-20 15:32:08,946 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37a17b35b/0fb2651cd9bb4b0e9086e2022c4d2b86 [2018-09-20 15:32:08,950 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 15:32:08,955 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 15:32:08,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 15:32:08,960 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 15:32:08,967 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 15:32:08,968 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:32:08" (1/1) ... [2018-09-20 15:32:08,972 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@453ca601 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:32:08, skipping insertion in model container [2018-09-20 15:32:08,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:32:08" (1/1) ... [2018-09-20 15:32:08,985 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 15:32:09,245 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:32:09,266 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 15:32:09,339 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:32:09,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:32:09 WrapperNode [2018-09-20 15:32:09,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 15:32:09,421 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 15:32:09,421 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 15:32:09,421 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 15:32:09,440 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:32:09" (1/1) ... [2018-09-20 15:32:09,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:32:09" (1/1) ... [2018-09-20 15:32:09,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:32:09" (1/1) ... [2018-09-20 15:32:09,460 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:32:09" (1/1) ... [2018-09-20 15:32:09,480 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:32:09" (1/1) ... [2018-09-20 15:32:09,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:32:09" (1/1) ... [2018-09-20 15:32:09,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:32:09" (1/1) ... [2018-09-20 15:32:09,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 15:32:09,512 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 15:32:09,512 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 15:32:09,512 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 15:32:09,515 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:32:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-09-20 15:32:09,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 15:32:09,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 15:32:09,672 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2018-09-20 15:32:09,672 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_hypotf [2018-09-20 15:32:09,672 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2018-09-20 15:32:09,673 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 15:32:09,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 15:32:09,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-20 15:32:09,673 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2018-09-20 15:32:09,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-20 15:32:09,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-09-20 15:32:09,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-20 15:32:09,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-20 15:32:09,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-20 15:32:09,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-09-20 15:32:09,674 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_hypotf [2018-09-20 15:32:09,674 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2018-09-20 15:32:09,676 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 15:32:09,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 15:32:09,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 15:32:09,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-09-20 15:32:09,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-20 15:32:10,007 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:32:10,052 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:32:10,193 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:32:10,205 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:32:10,248 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:32:10,266 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:32:11,410 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:32:11,415 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:32:12,058 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 15:32:12,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:32:12 BoogieIcfgContainer [2018-09-20 15:32:12,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 15:32:12,060 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 15:32:12,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 15:32:12,064 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 15:32:12,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 03:32:08" (1/3) ... [2018-09-20 15:32:12,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a2bbb93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:32:12, skipping insertion in model container [2018-09-20 15:32:12,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:32:09" (2/3) ... [2018-09-20 15:32:12,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a2bbb93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:32:12, skipping insertion in model container [2018-09-20 15:32:12,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:32:12" (3/3) ... [2018-09-20 15:32:12,069 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1270d_true-unreach-call.c [2018-09-20 15:32:12,080 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 15:32:12,091 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-20 15:32:12,141 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 15:32:12,142 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 15:32:12,142 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 15:32:12,142 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 15:32:12,143 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 15:32:12,143 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 15:32:12,143 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 15:32:12,143 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 15:32:12,143 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 15:32:12,176 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states. [2018-09-20 15:32:12,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-09-20 15:32:12,190 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:32:12,192 INFO L376 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] [2018-09-20 15:32:12,196 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:32:12,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1998677788, now seen corresponding path program 1 times [2018-09-20 15:32:12,209 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:32:12,210 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-09-20 15:32:12,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:32:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:32:12,314 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:32:12,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:32:12,334 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:32:12,348 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:32:12,349 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-20 15:32:12,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-20 15:32:12,365 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-20 15:32:12,366 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-20 15:32:12,369 INFO L87 Difference]: Start difference. First operand 231 states. Second operand 2 states. [2018-09-20 15:32:12,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:32:12,426 INFO L93 Difference]: Finished difference Result 454 states and 571 transitions. [2018-09-20 15:32:12,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-20 15:32:12,428 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 27 [2018-09-20 15:32:12,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:32:12,446 INFO L225 Difference]: With dead ends: 454 [2018-09-20 15:32:12,447 INFO L226 Difference]: Without dead ends: 227 [2018-09-20 15:32:12,456 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-20 15:32:12,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-09-20 15:32:12,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-09-20 15:32:12,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-09-20 15:32:12,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 249 transitions. [2018-09-20 15:32:12,521 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 249 transitions. Word has length 27 [2018-09-20 15:32:12,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:32:12,522 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 249 transitions. [2018-09-20 15:32:12,522 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-20 15:32:12,522 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 249 transitions. [2018-09-20 15:32:12,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-09-20 15:32:12,527 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:32:12,527 INFO L376 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:32:12,527 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:32:12,528 INFO L82 PathProgramCache]: Analyzing trace with hash -711257081, now seen corresponding path program 1 times [2018-09-20 15:32:12,529 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:32:12,530 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-20 15:32:12,540 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-09-20 15:32:12,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:32:12,706 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:32:13,108 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-20 15:32:13,125 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-20 15:32:13,125 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:32:13,152 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:32:13,256 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-20 15:32:13,256 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:26, output treesize:27 [2018-09-20 15:32:13,378 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-20 15:32:13,391 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-20 15:32:13,391 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:32:13,395 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:32:13,411 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-20 15:32:13,411 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:34, output treesize:15 [2018-09-20 15:32:14,078 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-20 15:32:14,083 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-20 15:32:14,084 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:32:14,091 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:32:14,144 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-09-20 15:32:14,144 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:31, output treesize:27 [2018-09-20 15:32:14,259 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-20 15:32:14,267 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-20 15:32:14,268 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:32:14,276 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:32:14,320 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-09-20 15:32:14,321 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:48, output treesize:29 [2018-09-20 15:32:14,586 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-20 15:32:14,593 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-20 15:32:14,594 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:32:14,617 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:32:14,663 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-09-20 15:32:14,664 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:40, output treesize:36 [2018-09-20 15:32:14,879 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-20 15:32:14,889 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-20 15:32:14,889 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:32:14,896 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:32:14,929 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-09-20 15:32:14,930 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:57, output treesize:38 [2018-09-20 15:32:18,508 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-20 15:32:18,512 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-20 15:32:18,513 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:32:18,516 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:32:18,529 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:32:18,530 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-20 15:32:18,787 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-20 15:32:18,791 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-20 15:32:18,791 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:32:18,795 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:32:18,797 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:32:18,797 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-20 15:32:19,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:32:19,972 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:32:19,984 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:32:19,984 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2018-09-20 15:32:19,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-09-20 15:32:19,988 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-09-20 15:32:19,989 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=543, Unknown=0, NotChecked=0, Total=600 [2018-09-20 15:32:19,989 INFO L87 Difference]: Start difference. First operand 227 states and 249 transitions. Second operand 25 states. [2018-09-20 15:32:22,861 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2018-09-20 15:32:23,318 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2018-09-20 15:32:23,861 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2018-09-20 15:32:24,258 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2018-09-20 15:32:24,740 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2018-09-20 15:32:25,333 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2018-09-20 15:32:25,851 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2018-09-20 15:32:26,335 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2018-09-20 15:32:26,651 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2018-09-20 15:32:31,246 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:138) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:102) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.pop(ManagedScript.java:130) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:650) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:254) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:269) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:202) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:690) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:603) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:472) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:375) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:313) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.io.IOException: Stream closed at java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:433) at java.io.OutputStream.write(OutputStream.java:116) at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82) at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140) at sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:297) at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:141) at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:229) at java.io.BufferedWriter.flush(BufferedWriter.java:254) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:120) ... 28 more [2018-09-20 15:32:31,257 INFO L168 Benchmark]: Toolchain (without parser) took 22305.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 203.4 MB). Free memory was 951.9 MB in the beginning and 1.1 GB in the end (delta: -170.3 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. [2018-09-20 15:32:31,259 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-09-20 15:32:31,259 INFO L168 Benchmark]: CACSL2BoogieTranslator took 461.84 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 935.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-09-20 15:32:31,260 INFO L168 Benchmark]: Boogie Preprocessor took 90.37 ms. Allocated memory is still 1.0 GB. Free memory was 935.7 MB in the beginning and 930.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-09-20 15:32:31,261 INFO L168 Benchmark]: RCFGBuilder took 2547.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 930.4 MB in the beginning and 1.1 GB in the end (delta: -138.5 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2018-09-20 15:32:31,262 INFO L168 Benchmark]: TraceAbstraction took 19196.07 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -53.3 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. [2018-09-20 15:32:31,268 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 461.84 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 935.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 90.37 ms. Allocated memory is still 1.0 GB. Free memory was 935.7 MB in the beginning and 930.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 2547.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 930.4 MB in the beginning and 1.1 GB in the end (delta: -138.5 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 19196.07 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -53.3 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...