./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0710_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_2dab931f-ca65-4d1c-b17f-37081b14aac0/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2dab931f-ca65-4d1c-b17f-37081b14aac0/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2dab931f-ca65-4d1c-b17f-37081b14aac0/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2dab931f-ca65-4d1c-b17f-37081b14aac0/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0710_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_2dab931f-ca65-4d1c-b17f-37081b14aac0/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2dab931f-ca65-4d1c-b17f-37081b14aac0/bin-2019/uautomizer --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 1ff4e8ff973f803d8fa94df33d1e2314e0626318 ............................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_2dab931f-ca65-4d1c-b17f-37081b14aac0/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2dab931f-ca65-4d1c-b17f-37081b14aac0/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2dab931f-ca65-4d1c-b17f-37081b14aac0/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2dab931f-ca65-4d1c-b17f-37081b14aac0/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0710_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_2dab931f-ca65-4d1c-b17f-37081b14aac0/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2dab931f-ca65-4d1c-b17f-37081b14aac0/bin-2019/uautomizer --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 1ff4e8ff973f803d8fa94df33d1e2314e0626318 ............................................................................................................................................................................................................................................................................................................................ 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 0.1.23-1dbac8b [2018-11-10 04:00:41,375 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 04:00:41,376 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 04:00:41,384 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 04:00:41,384 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 04:00:41,385 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 04:00:41,386 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 04:00:41,387 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 04:00:41,389 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 04:00:41,389 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 04:00:41,390 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 04:00:41,390 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 04:00:41,391 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 04:00:41,392 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 04:00:41,392 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 04:00:41,393 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 04:00:41,393 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 04:00:41,394 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 04:00:41,396 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 04:00:41,397 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 04:00:41,398 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 04:00:41,399 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 04:00:41,401 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 04:00:41,401 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 04:00:41,401 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 04:00:41,402 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 04:00:41,403 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 04:00:41,403 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 04:00:41,404 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 04:00:41,405 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 04:00:41,405 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 04:00:41,405 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 04:00:41,406 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 04:00:41,406 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 04:00:41,406 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 04:00:41,407 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 04:00:41,407 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2dab931f-ca65-4d1c-b17f-37081b14aac0/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-10 04:00:41,415 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 04:00:41,416 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 04:00:41,416 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 04:00:41,416 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 04:00:41,417 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 04:00:41,417 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 04:00:41,417 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 04:00:41,417 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 04:00:41,417 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 04:00:41,417 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 04:00:41,417 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 04:00:41,417 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 04:00:41,417 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 04:00:41,417 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 04:00:41,418 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 04:00:41,418 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 04:00:41,418 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 04:00:41,418 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 04:00:41,418 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 04:00:41,418 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 04:00:41,418 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 04:00:41,418 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 04:00:41,418 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 04:00:41,418 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 04:00:41,418 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 04:00:41,418 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 04:00:41,419 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 04:00:41,419 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 04:00:41,419 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 04:00:41,419 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_2dab931f-ca65-4d1c-b17f-37081b14aac0/bin-2019/uautomizer 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 -> 1ff4e8ff973f803d8fa94df33d1e2314e0626318 [2018-11-10 04:00:41,440 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 04:00:41,450 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 04:00:41,453 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 04:00:41,455 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 04:00:41,455 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 04:00:41,456 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2dab931f-ca65-4d1c-b17f-37081b14aac0/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_0710_true-unreach-call.c [2018-11-10 04:00:41,507 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2dab931f-ca65-4d1c-b17f-37081b14aac0/bin-2019/uautomizer/data/7a3db007a/56327a2252dd4e30976092edcc2ac23b/FLAG2d2e61fa8 [2018-11-10 04:00:41,860 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 04:00:41,860 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2dab931f-ca65-4d1c-b17f-37081b14aac0/sv-benchmarks/c/float-newlib/float_req_bl_0710_true-unreach-call.c [2018-11-10 04:00:41,865 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2dab931f-ca65-4d1c-b17f-37081b14aac0/bin-2019/uautomizer/data/7a3db007a/56327a2252dd4e30976092edcc2ac23b/FLAG2d2e61fa8 [2018-11-10 04:00:41,877 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2dab931f-ca65-4d1c-b17f-37081b14aac0/bin-2019/uautomizer/data/7a3db007a/56327a2252dd4e30976092edcc2ac23b [2018-11-10 04:00:41,881 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 04:00:41,882 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 04:00:41,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 04:00:41,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 04:00:41,887 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 04:00:41,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 04:00:41" (1/1) ... [2018-11-10 04:00:41,890 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3498524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:00:41, skipping insertion in model container [2018-11-10 04:00:41,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 04:00:41" (1/1) ... [2018-11-10 04:00:41,900 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 04:00:41,922 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 04:00:42,066 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 04:00:42,069 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 04:00:42,092 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 04:00:42,106 INFO L193 MainTranslator]: Completed translation [2018-11-10 04:00:42,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:00:42 WrapperNode [2018-11-10 04:00:42,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 04:00:42,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 04:00:42,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 04:00:42,107 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 04:00:42,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:00:42" (1/1) ... [2018-11-10 04:00:42,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:00:42" (1/1) ... [2018-11-10 04:00:42,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:00:42" (1/1) ... [2018-11-10 04:00:42,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:00:42" (1/1) ... [2018-11-10 04:00:42,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:00:42" (1/1) ... [2018-11-10 04:00:42,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:00:42" (1/1) ... [2018-11-10 04:00:42,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:00:42" (1/1) ... [2018-11-10 04:00:42,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 04:00:42,137 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 04:00:42,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 04:00:42,138 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 04:00:42,138 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:00:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2dab931f-ca65-4d1c-b17f-37081b14aac0/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 04:00:42,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 04:00:42,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 04:00:42,226 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-11-10 04:00:42,226 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2018-11-10 04:00:42,227 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 04:00:42,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 04:00:42,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-11-10 04:00:42,227 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-11-10 04:00:42,227 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2018-11-10 04:00:42,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-10 04:00:42,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-10 04:00:42,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-10 04:00:42,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-10 04:00:42,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-10 04:00:42,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-11-10 04:00:42,228 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 04:00:42,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 04:00:42,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 04:00:42,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-11-10 04:00:42,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-10 04:00:42,463 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 04:00:42,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:00:42 BoogieIcfgContainer [2018-11-10 04:00:42,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 04:00:42,464 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 04:00:42,464 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 04:00:42,466 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 04:00:42,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 04:00:41" (1/3) ... [2018-11-10 04:00:42,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6692201f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 04:00:42, skipping insertion in model container [2018-11-10 04:00:42,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:00:42" (2/3) ... [2018-11-10 04:00:42,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6692201f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 04:00:42, skipping insertion in model container [2018-11-10 04:00:42,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:00:42" (3/3) ... [2018-11-10 04:00:42,468 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0710_true-unreach-call.c [2018-11-10 04:00:42,475 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 04:00:42,480 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 04:00:42,490 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 04:00:42,514 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 04:00:42,514 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 04:00:42,514 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 04:00:42,514 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 04:00:42,514 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 04:00:42,515 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 04:00:42,515 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 04:00:42,515 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 04:00:42,515 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 04:00:42,527 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2018-11-10 04:00:42,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-10 04:00:42,532 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:00:42,533 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:00:42,534 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:00:42,538 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:00:42,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1031956852, now seen corresponding path program 1 times [2018-11-10 04:00:42,540 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:00:42,540 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:00:42,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:00:42,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:00:42,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:00:42,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:00:42,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:00:42,652 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:00:42,652 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 04:00:42,655 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 04:00:42,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 04:00:42,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 04:00:42,668 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 2 states. [2018-11-10 04:00:42,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:00:42,686 INFO L93 Difference]: Finished difference Result 123 states and 158 transitions. [2018-11-10 04:00:42,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 04:00:42,687 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-11-10 04:00:42,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:00:42,695 INFO L225 Difference]: With dead ends: 123 [2018-11-10 04:00:42,695 INFO L226 Difference]: Without dead ends: 61 [2018-11-10 04:00:42,697 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 04:00:42,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-11-10 04:00:42,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-11-10 04:00:42,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-11-10 04:00:42,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2018-11-10 04:00:42,723 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 22 [2018-11-10 04:00:42,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:00:42,724 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2018-11-10 04:00:42,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 04:00:42,724 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2018-11-10 04:00:42,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-10 04:00:42,725 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:00:42,725 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:00:42,725 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:00:42,725 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:00:42,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1271085742, now seen corresponding path program 1 times [2018-11-10 04:00:42,726 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:00:42,726 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:00:42,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:00:42,727 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:00:42,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:00:42,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:00:42,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:00:42,793 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 04:00:42,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 04:00:42 BoogieIcfgContainer [2018-11-10 04:00:42,812 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 04:00:42,813 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 04:00:42,813 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 04:00:42,813 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 04:00:42,813 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:00:42" (3/4) ... [2018-11-10 04:00:42,816 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-10 04:00:42,816 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 04:00:42,816 INFO L168 Benchmark]: Toolchain (without parser) took 935.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 963.0 MB in the beginning and 1.1 GB in the end (delta: -126.5 MB). Peak memory consumption was 27.6 MB. Max. memory is 11.5 GB. [2018-11-10 04:00:42,818 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 04:00:42,818 INFO L168 Benchmark]: CACSL2BoogieTranslator took 223.84 ms. Allocated memory is still 1.0 GB. Free memory was 963.0 MB in the beginning and 946.9 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-10 04:00:42,818 INFO L168 Benchmark]: Boogie Preprocessor took 30.47 ms. Allocated memory is still 1.0 GB. Free memory is still 946.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 04:00:42,819 INFO L168 Benchmark]: RCFGBuilder took 325.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -180.1 MB). Peak memory consumption was 14.9 MB. Max. memory is 11.5 GB. [2018-11-10 04:00:42,819 INFO L168 Benchmark]: TraceAbstraction took 348.67 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 37.4 MB). Peak memory consumption was 37.4 MB. Max. memory is 11.5 GB. [2018-11-10 04:00:42,820 INFO L168 Benchmark]: Witness Printer took 3.01 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 04:00:42,821 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 223.84 ms. Allocated memory is still 1.0 GB. Free memory was 963.0 MB in the beginning and 946.9 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.47 ms. Allocated memory is still 1.0 GB. Free memory is still 946.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 325.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -180.1 MB). Peak memory consumption was 14.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 348.67 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 37.4 MB). Peak memory consumption was 37.4 MB. Max. memory is 11.5 GB. * Witness Printer took 3.01 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 98]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 13, overapproximation of bitwiseAnd at line 27, overapproximation of someBinaryArithmeticFLOAToperation at line 30. Possible FailurePath: [L15] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; VAL [\old(one_sqrt)=11, \old(tiny_sqrt)=6, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L91] float x = __VERIFIER_nondet_float(); [L92] COND TRUE x < -0.0f VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=7] [L94] CALL, EXPR __ieee754_sqrtf(x) VAL [\old(x)=7, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L18] float z; [L19] __uint32_t r, hx; [L20] __int32_t ix, s, q, m, t, i; VAL [\old(x)=7, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=7] [L23] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=7, gf_u={8:0}, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=7] [L24] FCALL gf_u.value = (x) VAL [\old(x)=7, gf_u={8:0}, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=7] [L25] EXPR, FCALL gf_u.word VAL [\old(x)=7, gf_u={8:0}, gf_u.word=3, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=7] [L25] (ix) = gf_u.word [L26] COND FALSE !(0) VAL [\old(x)=7, ix=3, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=7] [L27] hx = ix & 0x7fffffff VAL [\old(x)=7, ix=3, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=7] [L29] COND TRUE !((hx) < 0x7f800000L) [L30] RET return x * x + x; VAL [\old(x)=7, hx=2139095040, ix=3, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=7] [L94] EXPR __ieee754_sqrtf(x) VAL [__ieee754_sqrtf(x)=9, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=7] [L94] float res = __ieee754_sqrtf(x); [L97] CALL, EXPR isnan_float(res) VAL [\old(x)=9, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L13] RET return x != x; VAL [\old(x)=9, \result=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=9] [L97] EXPR isnan_float(res) VAL [isnan_float(res)=0, one_sqrt=1, res=9, tiny_sqrt=1/1000000000000000000000000000000, x=7] [L97] COND TRUE !isnan_float(res) [L98] __VERIFIER_error() VAL [one_sqrt=1, res=9, tiny_sqrt=1/1000000000000000000000000000000, x=7] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 66 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 77 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=66occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 441 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 0.1.23-1dbac8b [2018-11-10 04:00:44,350 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 04:00:44,352 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 04:00:44,362 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 04:00:44,362 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 04:00:44,363 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 04:00:44,364 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 04:00:44,365 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 04:00:44,367 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 04:00:44,367 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 04:00:44,368 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 04:00:44,368 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 04:00:44,369 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 04:00:44,370 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 04:00:44,371 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 04:00:44,371 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 04:00:44,372 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 04:00:44,373 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 04:00:44,375 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 04:00:44,376 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 04:00:44,377 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 04:00:44,378 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 04:00:44,379 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 04:00:44,380 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 04:00:44,380 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 04:00:44,381 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 04:00:44,381 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 04:00:44,382 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 04:00:44,383 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 04:00:44,384 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 04:00:44,384 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 04:00:44,384 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 04:00:44,384 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 04:00:44,385 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 04:00:44,385 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 04:00:44,386 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 04:00:44,386 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2dab931f-ca65-4d1c-b17f-37081b14aac0/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-10 04:00:44,398 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 04:00:44,398 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 04:00:44,398 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 04:00:44,399 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 04:00:44,399 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 04:00:44,399 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 04:00:44,399 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 04:00:44,400 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 04:00:44,400 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 04:00:44,400 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 04:00:44,400 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 04:00:44,400 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 04:00:44,400 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 04:00:44,401 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 04:00:44,401 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-10 04:00:44,401 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-10 04:00:44,401 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 04:00:44,401 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 04:00:44,401 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 04:00:44,402 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 04:00:44,402 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 04:00:44,402 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 04:00:44,402 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 04:00:44,402 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 04:00:44,402 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 04:00:44,403 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 04:00:44,403 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 04:00:44,403 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-10 04:00:44,403 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 04:00:44,403 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-10 04:00:44,403 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-10 04:00:44,403 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_2dab931f-ca65-4d1c-b17f-37081b14aac0/bin-2019/uautomizer 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 -> 1ff4e8ff973f803d8fa94df33d1e2314e0626318 [2018-11-10 04:00:44,436 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 04:00:44,446 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 04:00:44,449 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 04:00:44,450 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 04:00:44,450 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 04:00:44,451 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2dab931f-ca65-4d1c-b17f-37081b14aac0/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_0710_true-unreach-call.c [2018-11-10 04:00:44,502 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2dab931f-ca65-4d1c-b17f-37081b14aac0/bin-2019/uautomizer/data/06b24b43d/cce038d996014433a2edcbd18e2e12cf/FLAG401116ad4 [2018-11-10 04:00:44,854 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 04:00:44,854 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2dab931f-ca65-4d1c-b17f-37081b14aac0/sv-benchmarks/c/float-newlib/float_req_bl_0710_true-unreach-call.c [2018-11-10 04:00:44,861 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2dab931f-ca65-4d1c-b17f-37081b14aac0/bin-2019/uautomizer/data/06b24b43d/cce038d996014433a2edcbd18e2e12cf/FLAG401116ad4 [2018-11-10 04:00:44,871 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2dab931f-ca65-4d1c-b17f-37081b14aac0/bin-2019/uautomizer/data/06b24b43d/cce038d996014433a2edcbd18e2e12cf [2018-11-10 04:00:44,873 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 04:00:44,874 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 04:00:44,875 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 04:00:44,875 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 04:00:44,878 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 04:00:44,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 04:00:44" (1/1) ... [2018-11-10 04:00:44,880 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4580883d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:00:44, skipping insertion in model container [2018-11-10 04:00:44,881 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 04:00:44" (1/1) ... [2018-11-10 04:00:44,887 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 04:00:44,904 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 04:00:45,032 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 04:00:45,037 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 04:00:45,063 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 04:00:45,081 INFO L193 MainTranslator]: Completed translation [2018-11-10 04:00:45,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:00:45 WrapperNode [2018-11-10 04:00:45,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 04:00:45,082 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 04:00:45,082 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 04:00:45,082 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 04:00:45,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:00:45" (1/1) ... [2018-11-10 04:00:45,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:00:45" (1/1) ... [2018-11-10 04:00:45,099 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:00:45" (1/1) ... [2018-11-10 04:00:45,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:00:45" (1/1) ... [2018-11-10 04:00:45,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:00:45" (1/1) ... [2018-11-10 04:00:45,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:00:45" (1/1) ... [2018-11-10 04:00:45,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:00:45" (1/1) ... [2018-11-10 04:00:45,120 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 04:00:45,121 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 04:00:45,121 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 04:00:45,121 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 04:00:45,122 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:00:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2dab931f-ca65-4d1c-b17f-37081b14aac0/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 04:00:45,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 04:00:45,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 04:00:45,215 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-11-10 04:00:45,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2018-11-10 04:00:45,215 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 04:00:45,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 04:00:45,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-11-10 04:00:45,216 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-11-10 04:00:45,216 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2018-11-10 04:00:45,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-10 04:00:45,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-11-10 04:00:45,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-10 04:00:45,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-10 04:00:45,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-10 04:00:45,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-11-10 04:00:45,217 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 04:00:45,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 04:00:45,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 04:00:45,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-11-10 04:00:45,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-11-10 04:00:45,410 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-10 04:00:45,416 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-10 04:00:45,877 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 04:00:45,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:00:45 BoogieIcfgContainer [2018-11-10 04:00:45,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 04:00:45,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 04:00:45,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 04:00:45,881 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 04:00:45,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 04:00:44" (1/3) ... [2018-11-10 04:00:45,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@339daf03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 04:00:45, skipping insertion in model container [2018-11-10 04:00:45,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:00:45" (2/3) ... [2018-11-10 04:00:45,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@339daf03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 04:00:45, skipping insertion in model container [2018-11-10 04:00:45,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:00:45" (3/3) ... [2018-11-10 04:00:45,883 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0710_true-unreach-call.c [2018-11-10 04:00:45,889 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 04:00:45,895 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 04:00:45,905 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 04:00:45,929 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 04:00:45,929 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 04:00:45,929 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 04:00:45,930 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 04:00:45,930 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 04:00:45,930 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 04:00:45,930 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 04:00:45,930 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 04:00:45,930 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 04:00:45,944 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2018-11-10 04:00:45,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-10 04:00:45,949 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:00:45,950 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:00:45,952 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:00:45,956 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:00:45,956 INFO L82 PathProgramCache]: Analyzing trace with hash -184829323, now seen corresponding path program 1 times [2018-11-10 04:00:45,959 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 04:00:45,959 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2dab931f-ca65-4d1c-b17f-37081b14aac0/bin-2019/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-11-10 04:00:45,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:00:46,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:00:46,093 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:00:46,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:00:46,107 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 04:00:46,119 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:00:46,119 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 04:00:46,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 04:00:46,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 04:00:46,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 04:00:46,132 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 2 states. [2018-11-10 04:00:46,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:00:46,149 INFO L93 Difference]: Finished difference Result 121 states and 156 transitions. [2018-11-10 04:00:46,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 04:00:46,151 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-11-10 04:00:46,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:00:46,158 INFO L225 Difference]: With dead ends: 121 [2018-11-10 04:00:46,158 INFO L226 Difference]: Without dead ends: 60 [2018-11-10 04:00:46,160 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 04:00:46,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-11-10 04:00:46,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-11-10 04:00:46,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-11-10 04:00:46,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2018-11-10 04:00:46,189 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 21 [2018-11-10 04:00:46,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:00:46,189 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2018-11-10 04:00:46,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 04:00:46,189 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2018-11-10 04:00:46,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-10 04:00:46,190 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:00:46,191 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:00:46,191 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:00:46,191 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:00:46,191 INFO L82 PathProgramCache]: Analyzing trace with hash 865784696, now seen corresponding path program 1 times [2018-11-10 04:00:46,192 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 04:00:46,192 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2dab931f-ca65-4d1c-b17f-37081b14aac0/bin-2019/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-11-10 04:00:46,204 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:00:46,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:00:46,313 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:00:46,364 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 [2018-11-10 04:00:46,368 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 [2018-11-10 04:00:46,368 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 04:00:46,377 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:00:46,400 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:00:46,401 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:25 [2018-11-10 04:00:46,445 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 [2018-11-10 04:00:46,449 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 [2018-11-10 04:00:46,449 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 04:00:46,454 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:00:46,467 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:00:46,468 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:32, output treesize:13 [2018-11-10 04:00:50,470 WARN L179 SmtUtils]: Spent 1.48 s on a formula simplification that was a NOOP. DAG size: 20 [2018-11-10 04:01:02,181 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-11-10 04:01:17,128 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-11-10 04:01:18,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:01:18,851 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 04:01:18,863 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:01:18,863 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-11-10 04:01:18,864 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-10 04:01:18,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-10 04:01:18,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=120, Unknown=9, NotChecked=0, Total=156 [2018-11-10 04:01:18,865 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand 13 states. [2018-11-10 04:02:46,660 WARN L179 SmtUtils]: Spent 1.51 s on a formula simplification that was a NOOP. DAG size: 27 [2018-11-10 04:03:08,818 WARN L179 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-11-10 04:03:26,185 WARN L179 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-11-10 04:04:40,984 WARN L179 SmtUtils]: Spent 492.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-11-10 04:07:04,567 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2018-11-10 04:07:04,569 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:139) 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:131) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPrecondition(IncrementalHoareTripleChecker.java:333) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:257) 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:689) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:602) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:473) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) 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 [2018-11-10 04:07:04,572 INFO L168 Benchmark]: Toolchain (without parser) took 379697.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 953.2 MB in the beginning and 974.3 MB in the end (delta: -21.1 MB). Peak memory consumption was 130.9 MB. Max. memory is 11.5 GB. [2018-11-10 04:07:04,572 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 04:07:04,573 INFO L168 Benchmark]: CACSL2BoogieTranslator took 206.25 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 937.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-10 04:07:04,573 INFO L168 Benchmark]: Boogie Preprocessor took 38.79 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 04:07:04,574 INFO L168 Benchmark]: RCFGBuilder took 757.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -176.0 MB). Peak memory consumption was 22.2 MB. Max. memory is 11.5 GB. [2018-11-10 04:07:04,574 INFO L168 Benchmark]: TraceAbstraction took 378692.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 974.3 MB in the end (delta: 138.8 MB). Peak memory consumption was 138.8 MB. Max. memory is 11.5 GB. [2018-11-10 04:07:04,576 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 206.25 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 937.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 38.79 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 757.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -176.0 MB). Peak memory consumption was 22.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 378692.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 974.3 MB in the end (delta: 138.8 MB). Peak memory consumption was 138.8 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...