./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0930_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_94d75ff0-a168-47b8-9033-deceebf70a60/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_94d75ff0-a168-47b8-9033-deceebf70a60/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_94d75ff0-a168-47b8-9033-deceebf70a60/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_94d75ff0-a168-47b8-9033-deceebf70a60/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0930_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_94d75ff0-a168-47b8-9033-deceebf70a60/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_94d75ff0-a168-47b8-9033-deceebf70a60/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 8d1cc22c86ec678ca6c8e47fb3affd89f077aca1 ................................................................................................................................................................................................................................................................................................................ 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_94d75ff0-a168-47b8-9033-deceebf70a60/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_94d75ff0-a168-47b8-9033-deceebf70a60/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_94d75ff0-a168-47b8-9033-deceebf70a60/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_94d75ff0-a168-47b8-9033-deceebf70a60/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0930_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_94d75ff0-a168-47b8-9033-deceebf70a60/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_94d75ff0-a168-47b8-9033-deceebf70a60/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 8d1cc22c86ec678ca6c8e47fb3affd89f077aca1 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 [2018-10-26 19:30:10,416 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 19:30:10,417 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 19:30:10,426 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 19:30:10,427 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 19:30:10,427 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 19:30:10,428 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 19:30:10,430 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 19:30:10,431 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 19:30:10,432 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 19:30:10,433 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 19:30:10,433 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 19:30:10,434 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 19:30:10,434 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 19:30:10,435 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 19:30:10,436 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 19:30:10,437 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 19:30:10,439 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 19:30:10,440 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 19:30:10,441 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 19:30:10,442 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 19:30:10,443 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 19:30:10,445 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 19:30:10,445 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 19:30:10,445 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 19:30:10,447 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 19:30:10,448 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 19:30:10,448 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 19:30:10,449 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 19:30:10,450 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 19:30:10,450 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 19:30:10,451 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 19:30:10,451 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 19:30:10,451 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 19:30:10,452 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 19:30:10,453 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 19:30:10,453 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_94d75ff0-a168-47b8-9033-deceebf70a60/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-10-26 19:30:10,470 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 19:30:10,470 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 19:30:10,471 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 19:30:10,471 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 19:30:10,472 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 19:30:10,472 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 19:30:10,472 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 19:30:10,472 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 19:30:10,472 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 19:30:10,472 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 19:30:10,472 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 19:30:10,473 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 19:30:10,473 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 19:30:10,473 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 19:30:10,473 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 19:30:10,473 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 19:30:10,473 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 19:30:10,473 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 19:30:10,474 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 19:30:10,474 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 19:30:10,479 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 19:30:10,479 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 19:30:10,479 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:30:10,480 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 19:30:10,480 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 19:30:10,480 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 19:30:10,480 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 19:30:10,480 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 19:30:10,480 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 19:30:10,480 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_94d75ff0-a168-47b8-9033-deceebf70a60/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 -> 8d1cc22c86ec678ca6c8e47fb3affd89f077aca1 [2018-10-26 19:30:10,509 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 19:30:10,519 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 19:30:10,522 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 19:30:10,523 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 19:30:10,524 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 19:30:10,524 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_94d75ff0-a168-47b8-9033-deceebf70a60/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_0930_true-unreach-call.c [2018-10-26 19:30:10,571 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_94d75ff0-a168-47b8-9033-deceebf70a60/bin-2019/uautomizer/data/c0cc8e18b/cb9646a8dfaa4006b8c75d0f33fe86e5/FLAG5d827d2fe [2018-10-26 19:30:10,942 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 19:30:10,943 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_94d75ff0-a168-47b8-9033-deceebf70a60/sv-benchmarks/c/float-newlib/float_req_bl_0930_true-unreach-call.c [2018-10-26 19:30:10,949 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_94d75ff0-a168-47b8-9033-deceebf70a60/bin-2019/uautomizer/data/c0cc8e18b/cb9646a8dfaa4006b8c75d0f33fe86e5/FLAG5d827d2fe [2018-10-26 19:30:10,960 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_94d75ff0-a168-47b8-9033-deceebf70a60/bin-2019/uautomizer/data/c0cc8e18b/cb9646a8dfaa4006b8c75d0f33fe86e5 [2018-10-26 19:30:10,963 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 19:30:10,964 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 19:30:10,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 19:30:10,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 19:30:10,968 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 19:30:10,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:30:10" (1/1) ... [2018-10-26 19:30:10,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fbe7040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:30:10, skipping insertion in model container [2018-10-26 19:30:10,971 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:30:10" (1/1) ... [2018-10-26 19:30:10,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 19:30:10,999 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 19:30:11,140 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:30:11,143 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 19:30:11,172 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:30:11,190 INFO L193 MainTranslator]: Completed translation [2018-10-26 19:30:11,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:30:11 WrapperNode [2018-10-26 19:30:11,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 19:30:11,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 19:30:11,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 19:30:11,191 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 19:30:11,201 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:30:11" (1/1) ... [2018-10-26 19:30:11,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:30:11" (1/1) ... [2018-10-26 19:30:11,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:30:11" (1/1) ... [2018-10-26 19:30:11,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:30:11" (1/1) ... [2018-10-26 19:30:11,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:30:11" (1/1) ... [2018-10-26 19:30:11,225 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:30:11" (1/1) ... [2018-10-26 19:30:11,227 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:30:11" (1/1) ... [2018-10-26 19:30:11,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 19:30:11,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 19:30:11,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 19:30:11,230 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 19:30:11,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:30:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94d75ff0-a168-47b8-9033-deceebf70a60/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 [2018-10-26 19:30:11,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 19:30:11,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 19:30:11,353 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_logf [2018-10-26 19:30:11,353 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-10-26 19:30:11,353 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 19:30:11,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-10-26 19:30:11,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-10-26 19:30:11,354 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_logf [2018-10-26 19:30:11,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-10-26 19:30:11,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-10-26 19:30:11,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-10-26 19:30:11,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-10-26 19:30:11,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-10-26 19:30:11,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-10-26 19:30:11,356 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-10-26 19:30:11,356 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 19:30:11,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 19:30:11,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 19:30:11,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-10-26 19:30:11,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-10-26 19:30:11,895 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 19:30:11,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:30:11 BoogieIcfgContainer [2018-10-26 19:30:11,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 19:30:11,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 19:30:11,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 19:30:11,904 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 19:30:11,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:30:10" (1/3) ... [2018-10-26 19:30:11,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16911d6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:30:11, skipping insertion in model container [2018-10-26 19:30:11,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:30:11" (2/3) ... [2018-10-26 19:30:11,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16911d6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:30:11, skipping insertion in model container [2018-10-26 19:30:11,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:30:11" (3/3) ... [2018-10-26 19:30:11,909 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0930_true-unreach-call.c [2018-10-26 19:30:11,922 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 19:30:11,933 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 19:30:11,950 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 19:30:11,988 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 19:30:11,989 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 19:30:11,989 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 19:30:11,989 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 19:30:11,990 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 19:30:11,990 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 19:30:11,990 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 19:30:11,991 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 19:30:11,991 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 19:30:12,013 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2018-10-26 19:30:12,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-26 19:30:12,033 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:30:12,034 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:30:12,036 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:30:12,045 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:30:12,046 INFO L82 PathProgramCache]: Analyzing trace with hash 2121222115, now seen corresponding path program 1 times [2018-10-26 19:30:12,048 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:30:12,049 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:30:12,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:30:12,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:30:12,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:30:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:30:12,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:30:12,223 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:30:12,226 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 19:30:12,231 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 19:30:12,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 19:30:12,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 19:30:12,246 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 2 states. [2018-10-26 19:30:12,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:30:12,270 INFO L93 Difference]: Finished difference Result 150 states and 191 transitions. [2018-10-26 19:30:12,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 19:30:12,271 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-10-26 19:30:12,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:30:12,280 INFO L225 Difference]: With dead ends: 150 [2018-10-26 19:30:12,281 INFO L226 Difference]: Without dead ends: 75 [2018-10-26 19:30:12,284 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 [2018-10-26 19:30:12,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-26 19:30:12,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-26 19:30:12,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-26 19:30:12,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 86 transitions. [2018-10-26 19:30:12,317 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 86 transitions. Word has length 17 [2018-10-26 19:30:12,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:30:12,317 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 86 transitions. [2018-10-26 19:30:12,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 19:30:12,317 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 86 transitions. [2018-10-26 19:30:12,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-26 19:30:12,318 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:30:12,318 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] [2018-10-26 19:30:12,319 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:30:12,319 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:30:12,319 INFO L82 PathProgramCache]: Analyzing trace with hash 72460157, now seen corresponding path program 1 times [2018-10-26 19:30:12,319 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:30:12,319 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:30:12,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:30:12,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:30:12,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:30:12,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 19:30:12,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 19:30:12,405 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-26 19:30:12,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:30:12 BoogieIcfgContainer [2018-10-26 19:30:12,442 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 19:30:12,443 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 19:30:12,443 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 19:30:12,443 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 19:30:12,444 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:30:11" (3/4) ... [2018-10-26 19:30:12,447 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-26 19:30:12,447 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 19:30:12,448 INFO L168 Benchmark]: Toolchain (without parser) took 1484.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 955.8 MB in the beginning and 1.1 GB in the end (delta: -131.2 MB). Peak memory consumption was 11.9 MB. Max. memory is 11.5 GB. [2018-10-26 19:30:12,449 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 979.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 19:30:12,449 INFO L168 Benchmark]: CACSL2BoogieTranslator took 225.38 ms. Allocated memory is still 1.0 GB. Free memory was 955.8 MB in the beginning and 942.2 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. [2018-10-26 19:30:12,451 INFO L168 Benchmark]: Boogie Preprocessor took 39.26 ms. Allocated memory is still 1.0 GB. Free memory was 942.2 MB in the beginning and 939.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-26 19:30:12,451 INFO L168 Benchmark]: RCFGBuilder took 665.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 939.5 MB in the beginning and 1.1 GB in the end (delta: -174.3 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. [2018-10-26 19:30:12,452 INFO L168 Benchmark]: TraceAbstraction took 546.20 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: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2018-10-26 19:30:12,453 INFO L168 Benchmark]: Witness Printer took 4.18 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. [2018-10-26 19:30:12,457 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 979.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 225.38 ms. Allocated memory is still 1.0 GB. Free memory was 955.8 MB in the beginning and 942.2 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 39.26 ms. Allocated memory is still 1.0 GB. Free memory was 942.2 MB in the beginning and 939.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 665.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 939.5 MB in the beginning and 1.1 GB in the end (delta: -174.3 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 546.20 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: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * Witness Printer took 4.18 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: 121]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 120, overapproximation of someBinaryArithmeticFLOAToperation at line 32, overapproximation of bitwiseAnd at line 31. Possible FailurePath: [L12-L16] static const float ln2_hi_log = 6.9313812256e-01, ln2_lo_log = 9.0580006145e-06, two25_log = 3.355443200e+07, Lg1_log = 6.6666668653e-01, Lg2_log = 4.0000000596e-01, Lg3_log = 2.8571429849e-01, Lg4_log = 2.2222198546e-01, Lg5_log = 1.8183572590e-01, Lg6_log = 1.5313838422e-01, Lg7_log = 1.4798198640e-01; [L18] static const float zero_log = 0.0; VAL [\old(Lg1_log)=6442450958, \old(Lg2_log)=6442450960, \old(Lg3_log)=6442450945, \old(Lg4_log)=6442450948, \old(Lg5_log)=6442450950, \old(Lg6_log)=6442450957, \old(Lg7_log)=6442450956, \old(ln2_hi_log)=6442450947, \old(ln2_lo_log)=6442450951, \old(two25_log)=6442450955, \old(zero_log)=6442450953, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L116] float x = 1.0f; VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=1, zero_log=0] [L117] CALL, EXPR __ieee754_logf(x) VAL [\old(x)=1, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L21] float hfsq, f, s, z, R, w, t1, t2, dk; [L22] __int32_t k, ix, i, j; VAL [\old(x)=1, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=1, zero_log=0] [L25] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=1, gf_u={6442450954:0}, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=1, zero_log=0] [L26] FCALL gf_u.value = (x) VAL [\old(x)=1, gf_u={6442450954:0}, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=1, zero_log=0] [L27] EXPR, FCALL gf_u.word VAL [\old(x)=1, gf_u={6442450954:0}, gf_u.word=6442450944, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=1, zero_log=0] [L27] (ix) = gf_u.word [L28] COND FALSE !(0) VAL [\old(x)=1, ix=-2147483648, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=1, zero_log=0] [L30] k = 0 VAL [\old(x)=1, ix=-2147483648, k=0, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=1, zero_log=0] [L31] COND TRUE ((ix & 0x7fffffff) == 0) [L32] RET return -two25_log / zero_log; VAL [\old(x)=1, ix=-2147483648, k=0, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=1, zero_log=0] [L117] EXPR __ieee754_logf(x) VAL [__ieee754_logf(x)=6442450949, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=1, zero_log=0] [L117] float res = __ieee754_logf(x); [L120] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, res=6442450949, res == 0.0f && __signbit_float(res) == 0=0, two25_log=33554432, x=1, zero_log=0] [L120] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L121] __VERIFIER_error() VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, res=6442450949, two25_log=33554432, x=1, zero_log=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 79 locations, 1 error locations. UNSAFE Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 90 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=79occurred 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, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 256 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 [2018-10-26 19:30:14,411 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 19:30:14,412 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 19:30:14,423 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 19:30:14,423 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 19:30:14,424 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 19:30:14,425 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 19:30:14,427 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 19:30:14,429 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 19:30:14,430 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 19:30:14,431 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 19:30:14,431 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 19:30:14,432 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 19:30:14,433 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 19:30:14,434 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 19:30:14,435 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 19:30:14,436 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 19:30:14,437 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 19:30:14,440 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 19:30:14,441 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 19:30:14,443 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 19:30:14,444 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 19:30:14,447 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 19:30:14,447 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 19:30:14,447 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 19:30:14,448 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 19:30:14,449 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 19:30:14,451 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 19:30:14,451 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 19:30:14,453 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 19:30:14,453 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 19:30:14,454 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 19:30:14,454 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 19:30:14,455 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 19:30:14,456 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 19:30:14,456 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 19:30:14,457 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_94d75ff0-a168-47b8-9033-deceebf70a60/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-10-26 19:30:14,471 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 19:30:14,471 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 19:30:14,472 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 19:30:14,472 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 19:30:14,473 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 19:30:14,473 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 19:30:14,473 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 19:30:14,474 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 19:30:14,475 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 19:30:14,475 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 19:30:14,475 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 19:30:14,476 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 19:30:14,476 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 19:30:14,476 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 19:30:14,476 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-10-26 19:30:14,476 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-10-26 19:30:14,476 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 19:30:14,477 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 19:30:14,477 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 19:30:14,477 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 19:30:14,477 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 19:30:14,477 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 19:30:14,478 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 19:30:14,479 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:30:14,480 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 19:30:14,480 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 19:30:14,480 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 19:30:14,480 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-10-26 19:30:14,480 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 19:30:14,481 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-10-26 19:30:14,481 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-10-26 19:30:14,481 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_94d75ff0-a168-47b8-9033-deceebf70a60/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 -> 8d1cc22c86ec678ca6c8e47fb3affd89f077aca1 [2018-10-26 19:30:14,522 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 19:30:14,535 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 19:30:14,538 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 19:30:14,540 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 19:30:14,540 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 19:30:14,541 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_94d75ff0-a168-47b8-9033-deceebf70a60/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_0930_true-unreach-call.c [2018-10-26 19:30:14,594 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_94d75ff0-a168-47b8-9033-deceebf70a60/bin-2019/uautomizer/data/8c273b1de/721a9e750a0447b7a846eac3d8ac0ab4/FLAG800bbc688 [2018-10-26 19:30:15,002 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 19:30:15,002 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_94d75ff0-a168-47b8-9033-deceebf70a60/sv-benchmarks/c/float-newlib/float_req_bl_0930_true-unreach-call.c [2018-10-26 19:30:15,008 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_94d75ff0-a168-47b8-9033-deceebf70a60/bin-2019/uautomizer/data/8c273b1de/721a9e750a0447b7a846eac3d8ac0ab4/FLAG800bbc688 [2018-10-26 19:30:15,020 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_94d75ff0-a168-47b8-9033-deceebf70a60/bin-2019/uautomizer/data/8c273b1de/721a9e750a0447b7a846eac3d8ac0ab4 [2018-10-26 19:30:15,025 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 19:30:15,027 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 19:30:15,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 19:30:15,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 19:30:15,032 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 19:30:15,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:30:15" (1/1) ... [2018-10-26 19:30:15,035 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b9882ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:30:15, skipping insertion in model container [2018-10-26 19:30:15,035 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:30:15" (1/1) ... [2018-10-26 19:30:15,044 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 19:30:15,066 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 19:30:15,268 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:30:15,273 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 19:30:15,340 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:30:15,378 INFO L193 MainTranslator]: Completed translation [2018-10-26 19:30:15,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:30:15 WrapperNode [2018-10-26 19:30:15,379 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 19:30:15,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 19:30:15,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 19:30:15,380 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 19:30:15,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:30:15" (1/1) ... [2018-10-26 19:30:15,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:30:15" (1/1) ... [2018-10-26 19:30:15,409 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:30:15" (1/1) ... [2018-10-26 19:30:15,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:30:15" (1/1) ... [2018-10-26 19:30:15,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:30:15" (1/1) ... [2018-10-26 19:30:15,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:30:15" (1/1) ... [2018-10-26 19:30:15,439 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:30:15" (1/1) ... [2018-10-26 19:30:15,443 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 19:30:15,443 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 19:30:15,443 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 19:30:15,443 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 19:30:15,444 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:30:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94d75ff0-a168-47b8-9033-deceebf70a60/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 [2018-10-26 19:30:15,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 19:30:15,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 19:30:15,585 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_logf [2018-10-26 19:30:15,585 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-10-26 19:30:15,585 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 19:30:15,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-10-26 19:30:15,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-10-26 19:30:15,586 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_logf [2018-10-26 19:30:15,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-10-26 19:30:15,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-10-26 19:30:15,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-10-26 19:30:15,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-10-26 19:30:15,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-10-26 19:30:15,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-10-26 19:30:15,588 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-10-26 19:30:15,588 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 19:30:15,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 19:30:15,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 19:30:15,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-10-26 19:30:15,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-10-26 19:30:18,229 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-10-26 19:30:18,262 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-10-26 19:30:18,992 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-10-26 19:30:19,001 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-10-26 19:30:29,936 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-10-26 19:30:29,964 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-10-26 19:30:30,011 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 19:30:30,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:30:30 BoogieIcfgContainer [2018-10-26 19:30:30,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 19:30:30,013 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 19:30:30,013 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 19:30:30,017 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 19:30:30,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:30:15" (1/3) ... [2018-10-26 19:30:30,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@440d5fa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:30:30, skipping insertion in model container [2018-10-26 19:30:30,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:30:15" (2/3) ... [2018-10-26 19:30:30,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@440d5fa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:30:30, skipping insertion in model container [2018-10-26 19:30:30,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:30:30" (3/3) ... [2018-10-26 19:30:30,022 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0930_true-unreach-call.c [2018-10-26 19:30:30,030 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 19:30:30,036 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 19:30:30,050 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 19:30:30,078 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 19:30:30,078 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 19:30:30,078 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 19:30:30,079 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 19:30:30,079 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 19:30:30,079 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 19:30:30,079 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 19:30:30,079 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 19:30:30,079 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 19:30:30,097 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2018-10-26 19:30:30,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-26 19:30:30,103 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:30:30,103 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:30:30,105 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:30:30,110 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:30:30,111 INFO L82 PathProgramCache]: Analyzing trace with hash 2121222115, now seen corresponding path program 1 times [2018-10-26 19:30:30,115 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 19:30:30,115 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94d75ff0-a168-47b8-9033-deceebf70a60/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 [2018-10-26 19:30:30,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:30:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:30:30,430 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:30:30,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:30:30,443 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 19:30:30,460 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:30:30,460 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 19:30:30,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 19:30:30,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 19:30:30,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 19:30:30,479 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 2 states. [2018-10-26 19:30:30,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:30:30,508 INFO L93 Difference]: Finished difference Result 150 states and 191 transitions. [2018-10-26 19:30:30,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 19:30:30,509 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-10-26 19:30:30,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:30:30,517 INFO L225 Difference]: With dead ends: 150 [2018-10-26 19:30:30,517 INFO L226 Difference]: Without dead ends: 75 [2018-10-26 19:30:30,520 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 19:30:30,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-26 19:30:30,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-26 19:30:30,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-26 19:30:30,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 86 transitions. [2018-10-26 19:30:30,555 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 86 transitions. Word has length 17 [2018-10-26 19:30:30,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:30:30,555 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 86 transitions. [2018-10-26 19:30:30,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 19:30:30,555 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 86 transitions. [2018-10-26 19:30:30,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-26 19:30:30,556 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:30:30,556 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] [2018-10-26 19:30:30,556 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:30:30,557 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:30:30,557 INFO L82 PathProgramCache]: Analyzing trace with hash 72460157, now seen corresponding path program 1 times [2018-10-26 19:30:30,557 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 19:30:30,557 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94d75ff0-a168-47b8-9033-deceebf70a60/bin-2019/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-10-26 19:30:30,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-10-26 19:30:30,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:30:30,776 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:30:30,846 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 [2018-10-26 19:30:30,850 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 [2018-10-26 19:30:30,851 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:30:30,856 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:30:30,862 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:30:30,863 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-10-26 19:30:30,903 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 [2018-10-26 19:30:30,927 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 [2018-10-26 19:30:30,927 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:30:30,959 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:30:30,990 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:30:30,991 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-10-26 19:30:31,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:30:31,205 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 19:30:31,217 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:30:31,218 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-26 19:30:31,219 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 19:30:31,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 19:30:31,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-10-26 19:30:31,220 INFO L87 Difference]: Start difference. First operand 75 states and 86 transitions. Second operand 8 states. [2018-10-26 19:30:35,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:30:35,187 INFO L93 Difference]: Finished difference Result 106 states and 117 transitions. [2018-10-26 19:30:35,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-26 19:30:35,189 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2018-10-26 19:30:35,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:30:35,192 INFO L225 Difference]: With dead ends: 106 [2018-10-26 19:30:35,192 INFO L226 Difference]: Without dead ends: 83 [2018-10-26 19:30:35,193 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2018-10-26 19:30:35,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-26 19:30:35,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 75. [2018-10-26 19:30:35,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-26 19:30:35,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2018-10-26 19:30:35,203 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 26 [2018-10-26 19:30:35,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:30:35,203 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2018-10-26 19:30:35,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 19:30:35,204 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2018-10-26 19:30:35,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-26 19:30:35,205 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:30:35,205 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] [2018-10-26 19:30:35,205 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:30:35,205 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:30:35,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1770515613, now seen corresponding path program 1 times [2018-10-26 19:30:35,205 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 19:30:35,206 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94d75ff0-a168-47b8-9033-deceebf70a60/bin-2019/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-10-26 19:30:35,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:30:35,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:30:35,420 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:30:35,459 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 [2018-10-26 19:30:35,462 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 [2018-10-26 19:30:35,463 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:30:35,465 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:30:35,471 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:30:35,472 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-10-26 19:30:35,486 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 [2018-10-26 19:30:35,489 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 [2018-10-26 19:30:35,489 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:30:35,491 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:30:35,493 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:30:35,493 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-10-26 19:30:35,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:30:35,550 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 19:30:35,567 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:30:35,567 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-26 19:30:35,567 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 19:30:35,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 19:30:35,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-10-26 19:30:35,568 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand 8 states. [2018-10-26 19:30:38,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:30:38,669 INFO L93 Difference]: Finished difference Result 106 states and 116 transitions. [2018-10-26 19:30:38,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-26 19:30:38,671 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2018-10-26 19:30:38,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:30:38,672 INFO L225 Difference]: With dead ends: 106 [2018-10-26 19:30:38,672 INFO L226 Difference]: Without dead ends: 83 [2018-10-26 19:30:38,673 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2018-10-26 19:30:38,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-26 19:30:38,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 75. [2018-10-26 19:30:38,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-26 19:30:38,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 84 transitions. [2018-10-26 19:30:38,685 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 84 transitions. Word has length 27 [2018-10-26 19:30:38,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:30:38,685 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 84 transitions. [2018-10-26 19:30:38,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 19:30:38,685 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 84 transitions. [2018-10-26 19:30:38,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-26 19:30:38,687 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:30:38,687 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] [2018-10-26 19:30:38,687 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:30:38,687 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:30:38,688 INFO L82 PathProgramCache]: Analyzing trace with hash 2125674625, now seen corresponding path program 1 times [2018-10-26 19:30:38,688 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 19:30:38,689 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94d75ff0-a168-47b8-9033-deceebf70a60/bin-2019/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-10-26 19:30:38,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:30:38,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:30:38,771 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:30:38,821 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 [2018-10-26 19:30:38,823 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 [2018-10-26 19:30:38,824 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:30:38,826 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:30:38,833 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:30:38,833 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-10-26 19:30:38,849 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 [2018-10-26 19:30:38,853 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 [2018-10-26 19:30:38,853 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:30:38,859 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:30:38,864 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:30:38,865 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-10-26 19:30:38,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:30:38,920 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 19:30:38,927 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:30:38,927 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-26 19:30:38,927 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 19:30:38,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 19:30:38,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-10-26 19:30:38,928 INFO L87 Difference]: Start difference. First operand 75 states and 84 transitions. Second operand 8 states. [2018-10-26 19:30:41,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:30:41,897 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2018-10-26 19:30:41,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-26 19:30:41,898 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2018-10-26 19:30:41,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:30:41,899 INFO L225 Difference]: With dead ends: 104 [2018-10-26 19:30:41,899 INFO L226 Difference]: Without dead ends: 81 [2018-10-26 19:30:41,900 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2018-10-26 19:30:41,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-26 19:30:41,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 75. [2018-10-26 19:30:41,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-26 19:30:41,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 83 transitions. [2018-10-26 19:30:41,908 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 83 transitions. Word has length 28 [2018-10-26 19:30:41,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:30:41,908 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 83 transitions. [2018-10-26 19:30:41,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 19:30:41,908 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 83 transitions. [2018-10-26 19:30:41,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-26 19:30:41,910 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:30:41,910 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:30:41,910 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:30:41,910 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:30:41,910 INFO L82 PathProgramCache]: Analyzing trace with hash 2040770911, now seen corresponding path program 1 times [2018-10-26 19:30:41,911 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 19:30:41,911 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94d75ff0-a168-47b8-9033-deceebf70a60/bin-2019/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-10-26 19:30:41,915 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:30:42,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:30:42,762 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:30:42,787 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 [2018-10-26 19:30:42,790 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 [2018-10-26 19:30:42,790 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:30:42,795 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:30:42,802 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:30:42,804 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-10-26 19:30:42,817 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 [2018-10-26 19:30:42,819 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 [2018-10-26 19:30:42,820 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:30:42,822 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:30:42,823 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:30:42,823 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-10-26 19:30:42,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:30:42,927 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 19:30:42,941 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:30:42,941 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-26 19:30:42,942 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-26 19:30:42,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-26 19:30:42,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-10-26 19:30:42,942 INFO L87 Difference]: Start difference. First operand 75 states and 83 transitions. Second operand 9 states. [2018-10-26 19:30:46,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:30:46,000 INFO L93 Difference]: Finished difference Result 119 states and 134 transitions. [2018-10-26 19:30:46,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-26 19:30:46,000 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2018-10-26 19:30:46,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:30:46,001 INFO L225 Difference]: With dead ends: 119 [2018-10-26 19:30:46,001 INFO L226 Difference]: Without dead ends: 93 [2018-10-26 19:30:46,001 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2018-10-26 19:30:46,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-26 19:30:46,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 88. [2018-10-26 19:30:46,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-10-26 19:30:46,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2018-10-26 19:30:46,005 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 44 [2018-10-26 19:30:46,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:30:46,006 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2018-10-26 19:30:46,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-26 19:30:46,006 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2018-10-26 19:30:46,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-26 19:30:46,007 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:30:46,007 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:30:46,007 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:30:46,007 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:30:46,007 INFO L82 PathProgramCache]: Analyzing trace with hash -66468686, now seen corresponding path program 1 times [2018-10-26 19:30:46,008 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 19:30:46,008 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94d75ff0-a168-47b8-9033-deceebf70a60/bin-2019/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-10-26 19:30:46,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:30:46,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:30:46,243 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:30:46,312 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 [2018-10-26 19:30:46,315 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 [2018-10-26 19:30:46,315 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:30:46,318 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:30:46,328 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:30:46,328 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:27 [2018-10-26 19:30:46,352 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 [2018-10-26 19:30:46,355 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 [2018-10-26 19:30:46,355 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:30:46,358 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:30:46,364 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:30:46,364 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:15 [2018-10-26 19:30:46,464 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 23 treesize of output 20 [2018-10-26 19:30:46,467 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 20 treesize of output 19 [2018-10-26 19:30:46,467 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:30:46,471 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:30:46,486 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-26 19:30:46,486 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:38, output treesize:34 [2018-10-26 19:30:46,555 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 41 treesize of output 33 [2018-10-26 19:30:46,560 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 33 treesize of output 45 [2018-10-26 19:30:46,561 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:30:46,564 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:30:46,577 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. [2018-10-26 19:30:46,577 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:55, output treesize:60 [2018-10-26 19:30:55,080 WARN L179 SmtUtils]: Spent 2.18 s on a formula simplification that was a NOOP. DAG size: 34 [2018-10-26 19:31:19,273 WARN L179 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-10-26 19:31:19,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:31:19,306 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 19:31:19,322 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:31:19,322 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-10-26 19:31:19,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-26 19:31:19,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-26 19:31:19,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=137, Unknown=9, NotChecked=0, Total=182 [2018-10-26 19:31:19,323 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand 14 states. [2018-10-26 19:33:18,381 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.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: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 [2018-10-26 19:33:18,384 INFO L168 Benchmark]: Toolchain (without parser) took 183358.56 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 235.4 MB). Free memory was 951.9 MB in the beginning and 1.2 GB in the end (delta: -203.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. [2018-10-26 19:33:18,385 INFO L168 Benchmark]: CDTParser took 0.18 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. [2018-10-26 19:33:18,385 INFO L168 Benchmark]: CACSL2BoogieTranslator took 351.67 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. [2018-10-26 19:33:18,392 INFO L168 Benchmark]: Boogie Preprocessor took 63.04 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. [2018-10-26 19:33:18,393 INFO L168 Benchmark]: RCFGBuilder took 14568.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 184.0 MB). Free memory was 930.4 MB in the beginning and 1.1 GB in the end (delta: -207.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2018-10-26 19:33:18,393 INFO L168 Benchmark]: TraceAbstraction took 168370.76 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 51.4 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -17.3 MB). Peak memory consumption was 34.1 MB. Max. memory is 11.5 GB. [2018-10-26 19:33:18,396 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 351.67 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 63.04 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 14568.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 184.0 MB). Free memory was 930.4 MB in the beginning and 1.1 GB in the end (delta: -207.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 168370.76 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 51.4 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -17.3 MB). Peak memory consumption was 34.1 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...