./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_889bc1af-049d-4ede-b384-902e8140cb1d/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_889bc1af-049d-4ede-b384-902e8140cb1d/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_889bc1af-049d-4ede-b384-902e8140cb1d/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_889bc1af-049d-4ede-b384-902e8140cb1d/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_889bc1af-049d-4ede-b384-902e8140cb1d/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_889bc1af-049d-4ede-b384-902e8140cb1d/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cd0c8f7b91fa815011541d5ffb41102d34132ba8 ................................................................................................................................................................................................................................................................................................................................................................................................... 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_889bc1af-049d-4ede-b384-902e8140cb1d/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_889bc1af-049d-4ede-b384-902e8140cb1d/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_889bc1af-049d-4ede-b384-902e8140cb1d/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_889bc1af-049d-4ede-b384-902e8140cb1d/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_889bc1af-049d-4ede-b384-902e8140cb1d/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_889bc1af-049d-4ede-b384-902e8140cb1d/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cd0c8f7b91fa815011541d5ffb41102d34132ba8 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 13:11:38,799 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 13:11:38,800 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 13:11:38,806 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 13:11:38,807 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 13:11:38,807 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 13:11:38,808 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 13:11:38,809 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 13:11:38,810 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 13:11:38,810 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 13:11:38,811 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 13:11:38,811 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 13:11:38,811 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 13:11:38,812 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 13:11:38,812 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 13:11:38,813 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 13:11:38,813 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 13:11:38,814 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 13:11:38,815 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 13:11:38,816 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 13:11:38,817 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 13:11:38,817 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 13:11:38,818 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 13:11:38,818 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 13:11:38,819 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 13:11:38,819 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 13:11:38,820 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 13:11:38,820 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 13:11:38,821 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 13:11:38,821 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 13:11:38,821 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 13:11:38,822 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 13:11:38,822 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 13:11:38,822 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 13:11:38,822 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 13:11:38,823 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 13:11:38,823 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_889bc1af-049d-4ede-b384-902e8140cb1d/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 13:11:38,830 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 13:11:38,830 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 13:11:38,831 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 13:11:38,831 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 13:11:38,831 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 13:11:38,831 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 13:11:38,831 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 13:11:38,831 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 13:11:38,832 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 13:11:38,832 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 13:11:38,832 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 13:11:38,832 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 13:11:38,832 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 13:11:38,832 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 13:11:38,833 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 13:11:38,833 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 13:11:38,833 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 13:11:38,833 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 13:11:38,833 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 13:11:38,833 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 13:11:38,833 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 13:11:38,833 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 13:11:38,834 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 13:11:38,834 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 13:11:38,834 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 13:11:38,834 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 13:11:38,834 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 13:11:38,834 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 13:11:38,834 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 13:11:38,834 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 13:11:38,835 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 13:11:38,835 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 13:11:38,835 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 13:11:38,835 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 13:11:38,835 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 13:11:38,835 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 13:11:38,835 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_889bc1af-049d-4ede-b384-902e8140cb1d/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd0c8f7b91fa815011541d5ffb41102d34132ba8 [2018-12-09 13:11:38,854 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 13:11:38,862 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 13:11:38,865 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 13:11:38,866 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 13:11:38,866 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 13:11:38,867 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_889bc1af-049d-4ede-b384-902e8140cb1d/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1232a_true-unreach-call.c [2018-12-09 13:11:38,911 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_889bc1af-049d-4ede-b384-902e8140cb1d/bin-2019/utaipan/data/223545f6e/eee0856824c34bcb95f067c1e6444786/FLAGce196a88c [2018-12-09 13:11:39,343 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 13:11:39,344 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_889bc1af-049d-4ede-b384-902e8140cb1d/sv-benchmarks/c/float-newlib/float_req_bl_1232a_true-unreach-call.c [2018-12-09 13:11:39,348 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_889bc1af-049d-4ede-b384-902e8140cb1d/bin-2019/utaipan/data/223545f6e/eee0856824c34bcb95f067c1e6444786/FLAGce196a88c [2018-12-09 13:11:39,356 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_889bc1af-049d-4ede-b384-902e8140cb1d/bin-2019/utaipan/data/223545f6e/eee0856824c34bcb95f067c1e6444786 [2018-12-09 13:11:39,357 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 13:11:39,358 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 13:11:39,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 13:11:39,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 13:11:39,362 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 13:11:39,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:11:39" (1/1) ... [2018-12-09 13:11:39,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58f41b83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:11:39, skipping insertion in model container [2018-12-09 13:11:39,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:11:39" (1/1) ... [2018-12-09 13:11:39,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 13:11:39,378 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 13:11:39,476 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 13:11:39,478 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 13:11:39,492 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 13:11:39,504 INFO L195 MainTranslator]: Completed translation [2018-12-09 13:11:39,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:11:39 WrapperNode [2018-12-09 13:11:39,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 13:11:39,505 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 13:11:39,505 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 13:11:39,505 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 13:11:39,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:11:39" (1/1) ... [2018-12-09 13:11:39,520 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:11:39" (1/1) ... [2018-12-09 13:11:39,526 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 13:11:39,526 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 13:11:39,526 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 13:11:39,526 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 13:11:39,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:11:39" (1/1) ... [2018-12-09 13:11:39,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:11:39" (1/1) ... [2018-12-09 13:11:39,565 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:11:39" (1/1) ... [2018-12-09 13:11:39,565 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:11:39" (1/1) ... [2018-12-09 13:11:39,570 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:11:39" (1/1) ... [2018-12-09 13:11:39,573 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:11:39" (1/1) ... [2018-12-09 13:11:39,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:11:39" (1/1) ... [2018-12-09 13:11:39,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 13:11:39,576 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 13:11:39,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 13:11:39,576 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 13:11:39,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:11:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_889bc1af-049d-4ede-b384-902e8140cb1d/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 13:11:39,609 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 13:11:39,609 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 13:11:39,609 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-12-09 13:11:39,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-12-09 13:11:39,609 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2018-12-09 13:11:39,609 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2018-12-09 13:11:39,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 13:11:39,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 13:11:39,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-09 13:11:39,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 13:11:39,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 13:11:39,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 13:11:39,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 13:11:39,610 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-12-09 13:11:39,610 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-12-09 13:11:39,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 13:11:39,773 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 13:11:39,773 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-09 13:11:39,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:11:39 BoogieIcfgContainer [2018-12-09 13:11:39,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 13:11:39,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 13:11:39,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 13:11:39,777 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 13:11:39,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 01:11:39" (1/3) ... [2018-12-09 13:11:39,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e4cf796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:11:39, skipping insertion in model container [2018-12-09 13:11:39,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:11:39" (2/3) ... [2018-12-09 13:11:39,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e4cf796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:11:39, skipping insertion in model container [2018-12-09 13:11:39,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:11:39" (3/3) ... [2018-12-09 13:11:39,779 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a_true-unreach-call.c [2018-12-09 13:11:39,788 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 13:11:39,794 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 13:11:39,808 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 13:11:39,829 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 13:11:39,829 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 13:11:39,829 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 13:11:39,829 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 13:11:39,829 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 13:11:39,829 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 13:11:39,829 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 13:11:39,829 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 13:11:39,840 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-12-09 13:11:39,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-09 13:11:39,844 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:11:39,844 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 13:11:39,846 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 13:11:39,849 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:11:39,849 INFO L82 PathProgramCache]: Analyzing trace with hash 2127055292, now seen corresponding path program 1 times [2018-12-09 13:11:39,851 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 13:11:39,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:11:39,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:11:39,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:11:39,880 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 13:11:39,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:11:39,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 13:11:39,934 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 13:11:39,935 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 13:11:39,935 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 13:11:39,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 13:11:39,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 13:11:39,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 13:11:39,947 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2018-12-09 13:11:39,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:11:39,961 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2018-12-09 13:11:39,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 13:11:39,962 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-12-09 13:11:39,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:11:39,968 INFO L225 Difference]: With dead ends: 79 [2018-12-09 13:11:39,968 INFO L226 Difference]: Without dead ends: 40 [2018-12-09 13:11:39,970 INFO L631 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 [2018-12-09 13:11:39,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-09 13:11:39,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-12-09 13:11:39,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-09 13:11:39,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-12-09 13:11:39,993 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2018-12-09 13:11:39,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:11:39,994 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-12-09 13:11:39,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 13:11:39,994 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-12-09 13:11:39,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-09 13:11:39,995 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:11:39,995 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 13:11:39,995 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 13:11:39,995 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:11:39,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1720731955, now seen corresponding path program 1 times [2018-12-09 13:11:39,995 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 13:11:39,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:11:39,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:11:39,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:11:39,996 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 13:11:40,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:11:40,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 13:11:40,036 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 13:11:40,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 13:11:40,036 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 13:11:40,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 13:11:40,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 13:11:40,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 13:11:40,038 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-12-09 13:11:40,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:11:40,055 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2018-12-09 13:11:40,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 13:11:40,056 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-12-09 13:11:40,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:11:40,057 INFO L225 Difference]: With dead ends: 59 [2018-12-09 13:11:40,057 INFO L226 Difference]: Without dead ends: 44 [2018-12-09 13:11:40,058 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 13:11:40,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-09 13:11:40,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-12-09 13:11:40,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-09 13:11:40,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-12-09 13:11:40,063 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2018-12-09 13:11:40,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:11:40,063 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-12-09 13:11:40,063 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 13:11:40,063 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-12-09 13:11:40,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-09 13:11:40,064 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:11:40,064 INFO L402 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] [2018-12-09 13:11:40,064 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 13:11:40,064 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:11:40,064 INFO L82 PathProgramCache]: Analyzing trace with hash 185784867, now seen corresponding path program 1 times [2018-12-09 13:11:40,064 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 13:11:40,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:11:40,065 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:11:40,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:11:40,065 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 13:11:40,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:11:40,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 13:11:40,097 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 13:11:40,098 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 13:11:40,098 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 13:11:40,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 13:11:40,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 13:11:40,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 13:11:40,099 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 4 states. [2018-12-09 13:11:40,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:11:40,118 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2018-12-09 13:11:40,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 13:11:40,119 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-12-09 13:11:40,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:11:40,120 INFO L225 Difference]: With dead ends: 63 [2018-12-09 13:11:40,120 INFO L226 Difference]: Without dead ends: 48 [2018-12-09 13:11:40,121 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 13:11:40,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-12-09 13:11:40,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-12-09 13:11:40,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-09 13:11:40,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-12-09 13:11:40,125 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2018-12-09 13:11:40,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:11:40,125 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-12-09 13:11:40,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 13:11:40,125 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-12-09 13:11:40,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-09 13:11:40,125 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:11:40,126 INFO L402 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] [2018-12-09 13:11:40,126 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 13:11:40,126 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:11:40,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1611166492, now seen corresponding path program 1 times [2018-12-09 13:11:40,126 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 13:11:40,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:11:40,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:11:40,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:11:40,127 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 13:11:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 13:11:40,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 13:11:40,161 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 13:11:40,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 01:11:40 BoogieIcfgContainer [2018-12-09 13:11:40,178 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 13:11:40,178 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 13:11:40,178 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 13:11:40,179 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 13:11:40,179 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:11:39" (3/4) ... [2018-12-09 13:11:40,181 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-09 13:11:40,181 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 13:11:40,182 INFO L168 Benchmark]: Toolchain (without parser) took 823.89 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.3 MB). Free memory was 957.8 MB in the beginning and 1.0 GB in the end (delta: -68.6 MB). Peak memory consumption was 35.7 MB. Max. memory is 11.5 GB. [2018-12-09 13:11:40,183 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 13:11:40,183 INFO L168 Benchmark]: CACSL2BoogieTranslator took 145.66 ms. Allocated memory is still 1.0 GB. Free memory was 957.8 MB in the beginning and 947.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 13:11:40,183 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.83 ms. Allocated memory is still 1.0 GB. Free memory was 947.0 MB in the beginning and 941.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-09 13:11:40,184 INFO L168 Benchmark]: Boogie Preprocessor took 49.49 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.3 MB). Free memory was 941.7 MB in the beginning and 1.1 GB in the end (delta: -153.8 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. [2018-12-09 13:11:40,184 INFO L168 Benchmark]: RCFGBuilder took 197.79 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. [2018-12-09 13:11:40,185 INFO L168 Benchmark]: TraceAbstraction took 404.16 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 50.4 MB). Peak memory consumption was 50.4 MB. Max. memory is 11.5 GB. [2018-12-09 13:11:40,185 INFO L168 Benchmark]: Witness Printer took 2.76 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 13:11:40,187 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 145.66 ms. Allocated memory is still 1.0 GB. Free memory was 957.8 MB in the beginning and 947.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.83 ms. Allocated memory is still 1.0 GB. Free memory was 947.0 MB in the beginning and 941.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 49.49 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.3 MB). Free memory was 941.7 MB in the beginning and 1.1 GB in the end (delta: -153.8 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. * RCFGBuilder took 197.79 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 404.16 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 50.4 MB). Peak memory consumption was 50.4 MB. Max. memory is 11.5 GB. * Witness Printer took 2.76 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 70]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 69, overapproximation of someUnaryFLOAToperation at line 65. Possible FailurePath: [L64] float x = 0.0f; [L65] float y = -0.0f; VAL [x=0] [L66] CALL, EXPR fmin_float(x, y) VAL [\old(x)=0, \old(y)=4286578691] [L36] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0] [L13] __uint32_t w; VAL [\old(x)=0, x=0] [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (w) = gf_u.word [L21] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=0, w=4286578689, x=0] [L23-L24] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=0, w=4286578689, x=0] [L26-L27] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=0, w=4286578689, x=0] [L29] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L32] return 0; VAL [\old(x)=0, \result=0, w=4286578689, x=0] [L36] RET, EXPR __fpclassify_float(x) VAL [\old(x)=0, \old(y)=4286578691, __fpclassify_float(x)=0, x=0, y=4286578691] [L36] COND TRUE __fpclassify_float(x) == 0 [L37] return y; VAL [\old(x)=0, \old(y)=4286578691, \result=4286578691, x=0, y=4286578691] [L66] RET, EXPR fmin_float(x, y) VAL [fmin_float(x, y)=4286578691, x=0, y=4286578691] [L66] float res = fmin_float(x, y); [L69] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [res=4286578691, res == -0.0f && __signbit_float(res) == 1=0, x=0, y=4286578691] [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L70] __VERIFIER_error() VAL [res=4286578691, x=0, y=4286578691] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 144 SDtfs, 0 SDslu, 172 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 1926 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 0.1.23-635dfa2 [2018-12-09 13:11:41,523 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 13:11:41,524 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 13:11:41,530 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 13:11:41,530 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 13:11:41,531 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 13:11:41,531 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 13:11:41,532 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 13:11:41,533 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 13:11:41,533 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 13:11:41,534 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 13:11:41,534 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 13:11:41,534 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 13:11:41,535 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 13:11:41,535 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 13:11:41,536 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 13:11:41,536 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 13:11:41,537 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 13:11:41,538 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 13:11:41,539 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 13:11:41,539 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 13:11:41,540 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 13:11:41,541 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 13:11:41,541 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 13:11:41,541 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 13:11:41,541 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 13:11:41,542 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 13:11:41,542 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 13:11:41,543 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 13:11:41,543 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 13:11:41,543 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 13:11:41,544 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 13:11:41,544 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 13:11:41,544 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 13:11:41,545 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 13:11:41,545 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 13:11:41,545 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_889bc1af-049d-4ede-b384-902e8140cb1d/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-09 13:11:41,552 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 13:11:41,552 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 13:11:41,553 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 13:11:41,553 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 13:11:41,553 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 13:11:41,553 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 13:11:41,553 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 13:11:41,553 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 13:11:41,554 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 13:11:41,554 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 13:11:41,554 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 13:11:41,554 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 13:11:41,554 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 13:11:41,554 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 13:11:41,555 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 13:11:41,555 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 13:11:41,555 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 13:11:41,555 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-09 13:11:41,555 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-09 13:11:41,555 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 13:11:41,555 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 13:11:41,555 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 13:11:41,555 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 13:11:41,556 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 13:11:41,556 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 13:11:41,556 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 13:11:41,556 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 13:11:41,556 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 13:11:41,556 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 13:11:41,556 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 13:11:41,556 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 13:11:41,556 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-09 13:11:41,557 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 13:11:41,557 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-09 13:11:41,557 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-09 13:11:41,557 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_889bc1af-049d-4ede-b384-902e8140cb1d/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd0c8f7b91fa815011541d5ffb41102d34132ba8 [2018-12-09 13:11:41,574 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 13:11:41,582 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 13:11:41,584 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 13:11:41,584 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 13:11:41,585 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 13:11:41,585 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_889bc1af-049d-4ede-b384-902e8140cb1d/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1232a_true-unreach-call.c [2018-12-09 13:11:41,620 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_889bc1af-049d-4ede-b384-902e8140cb1d/bin-2019/utaipan/data/28082a853/d31b2b4b74f84bf5936ad41601002208/FLAGf9e546422 [2018-12-09 13:11:41,963 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 13:11:41,963 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_889bc1af-049d-4ede-b384-902e8140cb1d/sv-benchmarks/c/float-newlib/float_req_bl_1232a_true-unreach-call.c [2018-12-09 13:11:41,967 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_889bc1af-049d-4ede-b384-902e8140cb1d/bin-2019/utaipan/data/28082a853/d31b2b4b74f84bf5936ad41601002208/FLAGf9e546422 [2018-12-09 13:11:42,357 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_889bc1af-049d-4ede-b384-902e8140cb1d/bin-2019/utaipan/data/28082a853/d31b2b4b74f84bf5936ad41601002208 [2018-12-09 13:11:42,360 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 13:11:42,361 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 13:11:42,361 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 13:11:42,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 13:11:42,365 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 13:11:42,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:11:42" (1/1) ... [2018-12-09 13:11:42,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@426f976d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:11:42, skipping insertion in model container [2018-12-09 13:11:42,368 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:11:42" (1/1) ... [2018-12-09 13:11:42,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 13:11:42,382 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 13:11:42,475 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 13:11:42,478 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 13:11:42,494 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 13:11:42,509 INFO L195 MainTranslator]: Completed translation [2018-12-09 13:11:42,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:11:42 WrapperNode [2018-12-09 13:11:42,509 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 13:11:42,509 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 13:11:42,510 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 13:11:42,510 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 13:11:42,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:11:42" (1/1) ... [2018-12-09 13:11:42,521 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:11:42" (1/1) ... [2018-12-09 13:11:42,525 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 13:11:42,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 13:11:42,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 13:11:42,525 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 13:11:42,531 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:11:42" (1/1) ... [2018-12-09 13:11:42,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:11:42" (1/1) ... [2018-12-09 13:11:42,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:11:42" (1/1) ... [2018-12-09 13:11:42,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:11:42" (1/1) ... [2018-12-09 13:11:42,539 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:11:42" (1/1) ... [2018-12-09 13:11:42,542 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:11:42" (1/1) ... [2018-12-09 13:11:42,543 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:11:42" (1/1) ... [2018-12-09 13:11:42,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 13:11:42,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 13:11:42,545 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 13:11:42,545 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 13:11:42,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:11:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_889bc1af-049d-4ede-b384-902e8140cb1d/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 13:11:42,614 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 13:11:42,614 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 13:11:42,614 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-12-09 13:11:42,614 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-12-09 13:11:42,614 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2018-12-09 13:11:42,615 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2018-12-09 13:11:42,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 13:11:42,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 13:11:42,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 13:11:42,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-09 13:11:42,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 13:11:42,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 13:11:42,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-12-09 13:11:42,615 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-12-09 13:11:42,615 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-12-09 13:11:42,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 13:11:42,756 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 13:11:42,782 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 13:11:42,786 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 13:11:42,786 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-09 13:11:42,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:11:42 BoogieIcfgContainer [2018-12-09 13:11:42,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 13:11:42,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 13:11:42,787 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 13:11:42,788 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 13:11:42,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 01:11:42" (1/3) ... [2018-12-09 13:11:42,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cb99c34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:11:42, skipping insertion in model container [2018-12-09 13:11:42,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:11:42" (2/3) ... [2018-12-09 13:11:42,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cb99c34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:11:42, skipping insertion in model container [2018-12-09 13:11:42,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:11:42" (3/3) ... [2018-12-09 13:11:42,790 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a_true-unreach-call.c [2018-12-09 13:11:42,796 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 13:11:42,800 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 13:11:42,809 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 13:11:42,825 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 13:11:42,826 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 13:11:42,826 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 13:11:42,826 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 13:11:42,826 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 13:11:42,826 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 13:11:42,826 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 13:11:42,826 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 13:11:42,826 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 13:11:42,835 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-12-09 13:11:42,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-09 13:11:42,839 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:11:42,839 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 13:11:42,840 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 13:11:42,844 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:11:42,844 INFO L82 PathProgramCache]: Analyzing trace with hash 148552213, now seen corresponding path program 1 times [2018-12-09 13:11:42,846 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 13:11:42,846 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_889bc1af-049d-4ede-b384-902e8140cb1d/bin-2019/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-12-09 13:11:42,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:11:42,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:11:42,890 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 13:11:42,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 13:11:42,902 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 13:11:42,909 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 13:11:42,910 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 13:11:42,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 13:11:42,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 13:11:42,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 13:11:42,921 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-12-09 13:11:42,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:11:42,934 INFO L93 Difference]: Finished difference Result 75 states and 103 transitions. [2018-12-09 13:11:42,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 13:11:42,934 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-12-09 13:11:42,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:11:42,940 INFO L225 Difference]: With dead ends: 75 [2018-12-09 13:11:42,940 INFO L226 Difference]: Without dead ends: 38 [2018-12-09 13:11:42,942 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 13:11:42,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-12-09 13:11:42,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-12-09 13:11:42,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-12-09 13:11:42,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2018-12-09 13:11:42,965 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 21 [2018-12-09 13:11:42,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:11:42,965 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2018-12-09 13:11:42,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 13:11:42,966 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2018-12-09 13:11:42,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-09 13:11:42,967 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:11:42,967 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 13:11:42,967 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 13:11:42,967 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:11:42,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1171864516, now seen corresponding path program 1 times [2018-12-09 13:11:42,967 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 13:11:42,968 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_889bc1af-049d-4ede-b384-902e8140cb1d/bin-2019/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-12-09 13:11:42,970 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:11:42,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:11:43,002 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 13:11:43,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 13:11:43,018 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 13:11:43,025 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 13:11:43,025 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 13:11:43,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 13:11:43,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 13:11:43,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 13:11:43,026 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 4 states. [2018-12-09 13:11:43,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:11:43,048 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2018-12-09 13:11:43,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 13:11:43,049 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-12-09 13:11:43,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:11:43,051 INFO L225 Difference]: With dead ends: 56 [2018-12-09 13:11:43,051 INFO L226 Difference]: Without dead ends: 41 [2018-12-09 13:11:43,051 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 13:11:43,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-09 13:11:43,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-12-09 13:11:43,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-09 13:11:43,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2018-12-09 13:11:43,056 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 22 [2018-12-09 13:11:43,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:11:43,056 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2018-12-09 13:11:43,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 13:11:43,056 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2018-12-09 13:11:43,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-09 13:11:43,057 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:11:43,057 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 13:11:43,057 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 13:11:43,057 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:11:43,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1456590866, now seen corresponding path program 1 times [2018-12-09 13:11:43,058 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 13:11:43,058 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_889bc1af-049d-4ede-b384-902e8140cb1d/bin-2019/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-12-09 13:11:43,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:11:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:11:43,087 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 13:11:43,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 13:11:43,161 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 13:11:43,168 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 13:11:43,168 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 13:11:43,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 13:11:43,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 13:11:43,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-09 13:11:43,169 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 8 states. [2018-12-09 13:11:43,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:11:43,527 INFO L93 Difference]: Finished difference Result 60 states and 73 transitions. [2018-12-09 13:11:43,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 13:11:43,527 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2018-12-09 13:11:43,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:11:43,528 INFO L225 Difference]: With dead ends: 60 [2018-12-09 13:11:43,528 INFO L226 Difference]: Without dead ends: 40 [2018-12-09 13:11:43,529 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-09 13:11:43,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-09 13:11:43,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-12-09 13:11:43,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-09 13:11:43,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2018-12-09 13:11:43,532 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 23 [2018-12-09 13:11:43,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:11:43,533 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2018-12-09 13:11:43,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 13:11:43,533 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2018-12-09 13:11:43,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-09 13:11:43,533 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:11:43,533 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 13:11:43,534 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 13:11:43,534 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:11:43,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1971562729, now seen corresponding path program 1 times [2018-12-09 13:11:43,534 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 13:11:43,534 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_889bc1af-049d-4ede-b384-902e8140cb1d/bin-2019/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-12-09 13:11:43,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:11:43,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:11:43,570 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 13:11:43,580 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-09 13:11:43,580 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 13:11:43,586 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 13:11:43,587 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 13:11:43,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 13:11:43,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 13:11:43,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 13:11:43,587 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 4 states. [2018-12-09 13:11:43,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:11:43,603 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2018-12-09 13:11:43,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 13:11:43,604 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-12-09 13:11:43,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:11:43,604 INFO L225 Difference]: With dead ends: 56 [2018-12-09 13:11:43,605 INFO L226 Difference]: Without dead ends: 41 [2018-12-09 13:11:43,605 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 13:11:43,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-09 13:11:43,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-12-09 13:11:43,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-09 13:11:43,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2018-12-09 13:11:43,609 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 30 [2018-12-09 13:11:43,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:11:43,610 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2018-12-09 13:11:43,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 13:11:43,610 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2018-12-09 13:11:43,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-12-09 13:11:43,611 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:11:43,611 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 13:11:43,611 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 13:11:43,611 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:11:43,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1323623109, now seen corresponding path program 1 times [2018-12-09 13:11:43,611 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 13:11:43,612 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_889bc1af-049d-4ede-b384-902e8140cb1d/bin-2019/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-12-09 13:11:43,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:11:43,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:11:43,651 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 13:11:43,727 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 13:11:43,727 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 13:11:43,734 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 13:11:43,734 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 13:11:43,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 13:11:43,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 13:11:43,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-09 13:11:43,735 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 8 states. [2018-12-09 13:11:44,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:11:44,228 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2018-12-09 13:11:44,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 13:11:44,229 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-12-09 13:11:44,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:11:44,229 INFO L225 Difference]: With dead ends: 58 [2018-12-09 13:11:44,229 INFO L226 Difference]: Without dead ends: 35 [2018-12-09 13:11:44,230 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-09 13:11:44,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-09 13:11:44,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-12-09 13:11:44,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-12-09 13:11:44,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-12-09 13:11:44,232 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 31 [2018-12-09 13:11:44,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:11:44,233 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-12-09 13:11:44,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 13:11:44,233 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-12-09 13:11:44,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-09 13:11:44,233 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:11:44,233 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 13:11:44,233 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 13:11:44,233 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:11:44,234 INFO L82 PathProgramCache]: Analyzing trace with hash 207693948, now seen corresponding path program 1 times [2018-12-09 13:11:44,234 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 13:11:44,234 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_889bc1af-049d-4ede-b384-902e8140cb1d/bin-2019/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-12-09 13:11:44,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:11:44,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:11:44,269 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 13:11:44,321 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-09 13:11:44,321 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 13:11:44,328 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 13:11:44,328 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 13:11:44,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 13:11:44,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 13:11:44,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 13:11:44,329 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 5 states. [2018-12-09 13:11:44,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:11:44,378 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2018-12-09 13:11:44,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 13:11:44,379 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-12-09 13:11:44,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:11:44,380 INFO L225 Difference]: With dead ends: 51 [2018-12-09 13:11:44,380 INFO L226 Difference]: Without dead ends: 35 [2018-12-09 13:11:44,380 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-09 13:11:44,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-09 13:11:44,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-12-09 13:11:44,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-12-09 13:11:44,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2018-12-09 13:11:44,383 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 32 [2018-12-09 13:11:44,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:11:44,383 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2018-12-09 13:11:44,383 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 13:11:44,383 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2018-12-09 13:11:44,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-09 13:11:44,383 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:11:44,383 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 13:11:44,384 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 13:11:44,384 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:11:44,384 INFO L82 PathProgramCache]: Analyzing trace with hash -601652678, now seen corresponding path program 1 times [2018-12-09 13:11:44,384 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 13:11:44,384 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_889bc1af-049d-4ede-b384-902e8140cb1d/bin-2019/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-12-09 13:11:44,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:11:44,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:11:44,420 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 13:11:44,471 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-09 13:11:44,471 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 13:11:44,478 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 13:11:44,478 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 13:11:44,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 13:11:44,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 13:11:44,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-09 13:11:44,479 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 8 states. [2018-12-09 13:11:44,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:11:44,600 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-12-09 13:11:44,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 13:11:44,600 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-12-09 13:11:44,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:11:44,601 INFO L225 Difference]: With dead ends: 38 [2018-12-09 13:11:44,601 INFO L226 Difference]: Without dead ends: 35 [2018-12-09 13:11:44,601 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-12-09 13:11:44,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-09 13:11:44,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-12-09 13:11:44,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-12-09 13:11:44,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-12-09 13:11:44,604 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2018-12-09 13:11:44,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:11:44,604 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-12-09 13:11:44,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 13:11:44,604 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-12-09 13:11:44,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-12-09 13:11:44,604 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:11:44,604 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2018-12-09 13:11:44,605 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 13:11:44,605 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:11:44,605 INFO L82 PathProgramCache]: Analyzing trace with hash -193082209, now seen corresponding path program 1 times [2018-12-09 13:11:44,605 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 13:11:44,605 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_889bc1af-049d-4ede-b384-902e8140cb1d/bin-2019/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-12-09 13:11:44,608 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:11:44,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:11:44,650 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 13:11:44,800 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-09 13:11:44,800 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 13:11:44,807 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 13:11:44,807 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-12-09 13:11:44,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-09 13:11:44,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-09 13:11:44,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-12-09 13:11:44,807 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 13 states. [2018-12-09 13:11:45,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:11:45,223 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-12-09 13:11:45,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-09 13:11:45,224 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2018-12-09 13:11:45,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:11:45,225 INFO L225 Difference]: With dead ends: 35 [2018-12-09 13:11:45,225 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 13:11:45,226 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2018-12-09 13:11:45,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 13:11:45,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 13:11:45,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 13:11:45,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 13:11:45,227 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2018-12-09 13:11:45,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:11:45,227 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 13:11:45,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-09 13:11:45,227 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 13:11:45,227 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 13:11:45,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-09 13:11:45,344 INFO L451 ceAbstractionStarter]: At program point fmin_floatENTRY(lines 35 42) the Hoare annotation is: true [2018-12-09 13:11:45,344 INFO L448 ceAbstractionStarter]: For program point fmin_floatEXIT(lines 35 42) no Hoare annotation was computed. [2018-12-09 13:11:45,344 INFO L448 ceAbstractionStarter]: For program point fmin_floatFINAL(lines 35 42) no Hoare annotation was computed. [2018-12-09 13:11:45,344 INFO L448 ceAbstractionStarter]: For program point L41(line 41) no Hoare annotation was computed. [2018-12-09 13:11:45,344 INFO L448 ceAbstractionStarter]: For program point L41-2(line 41) no Hoare annotation was computed. [2018-12-09 13:11:45,344 INFO L444 ceAbstractionStarter]: At program point L38(line 38) the Hoare annotation is: (let ((.cse0 (= fmin_float_~x |fmin_float_#in~x|))) (or (and .cse0 (exists ((__fpclassify_float_~w~0 (_ BitVec 32))) (and (= (fp ((_ extract 31 31) __fpclassify_float_~w~0) ((_ extract 30 23) __fpclassify_float_~w~0) ((_ extract 22 0) __fpclassify_float_~w~0)) |fmin_float_#in~x|) (not (= __fpclassify_float_~w~0 (_ bv0 32)))))) (and .cse0 (= fmin_float_~y |fmin_float_#in~y|)))) [2018-12-09 13:11:45,344 INFO L448 ceAbstractionStarter]: For program point L38-1(lines 38 39) no Hoare annotation was computed. [2018-12-09 13:11:45,344 INFO L444 ceAbstractionStarter]: At program point L36(line 36) the Hoare annotation is: (and (= fmin_float_~x |fmin_float_#in~x|) (= fmin_float_~y |fmin_float_#in~y|)) [2018-12-09 13:11:45,344 INFO L448 ceAbstractionStarter]: For program point L36-1(lines 36 37) no Hoare annotation was computed. [2018-12-09 13:11:45,344 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-09 13:11:45,345 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-12-09 13:11:45,345 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-09 13:11:45,345 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-09 13:11:45,345 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-09 13:11:45,345 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-09 13:11:45,345 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-09 13:11:45,345 INFO L448 ceAbstractionStarter]: For program point L66-1(line 66) no Hoare annotation was computed. [2018-12-09 13:11:45,345 INFO L448 ceAbstractionStarter]: For program point L69-4(lines 69 72) no Hoare annotation was computed. [2018-12-09 13:11:45,345 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 56 75) the Hoare annotation is: true [2018-12-09 13:11:45,345 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 56 75) no Hoare annotation was computed. [2018-12-09 13:11:45,345 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 70) no Hoare annotation was computed. [2018-12-09 13:11:45,345 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 56 75) no Hoare annotation was computed. [2018-12-09 13:11:45,345 INFO L448 ceAbstractionStarter]: For program point L70(line 70) no Hoare annotation was computed. [2018-12-09 13:11:45,346 INFO L448 ceAbstractionStarter]: For program point L69(line 69) no Hoare annotation was computed. [2018-12-09 13:11:45,346 INFO L444 ceAbstractionStarter]: At program point L69-1(line 69) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= (_ +zero 8 24) main_~x~0) (= main_~res~0 .cse0) |main_#t~short9| (= main_~y~0 .cse0))) [2018-12-09 13:11:45,346 INFO L448 ceAbstractionStarter]: For program point L69-2(line 69) no Hoare annotation was computed. [2018-12-09 13:11:45,346 INFO L444 ceAbstractionStarter]: At program point L66(line 66) the Hoare annotation is: (and (= (_ +zero 8 24) main_~x~0) (= main_~y~0 (fp.neg (_ +zero 8 24)))) [2018-12-09 13:11:45,346 INFO L448 ceAbstractionStarter]: For program point L29(lines 29 32) no Hoare annotation was computed. [2018-12-09 13:11:45,346 INFO L448 ceAbstractionStarter]: For program point __fpclassify_floatFINAL(lines 12 33) no Hoare annotation was computed. [2018-12-09 13:11:45,346 INFO L448 ceAbstractionStarter]: For program point L23(lines 23 32) no Hoare annotation was computed. [2018-12-09 13:11:45,346 INFO L448 ceAbstractionStarter]: For program point L15-1(lines 15 19) no Hoare annotation was computed. [2018-12-09 13:11:45,346 INFO L444 ceAbstractionStarter]: At program point L15-2(lines 15 19) the Hoare annotation is: (= __fpclassify_float_~x |__fpclassify_float_#in~x|) [2018-12-09 13:11:45,346 INFO L448 ceAbstractionStarter]: For program point L15-3(lines 12 33) no Hoare annotation was computed. [2018-12-09 13:11:45,346 INFO L448 ceAbstractionStarter]: For program point L26(lines 26 32) no Hoare annotation was computed. [2018-12-09 13:11:45,346 INFO L451 ceAbstractionStarter]: At program point __fpclassify_floatENTRY(lines 12 33) the Hoare annotation is: true [2018-12-09 13:11:45,346 INFO L448 ceAbstractionStarter]: For program point __fpclassify_floatEXIT(lines 12 33) no Hoare annotation was computed. [2018-12-09 13:11:45,346 INFO L448 ceAbstractionStarter]: For program point __signbit_floatFINAL(lines 44 54) no Hoare annotation was computed. [2018-12-09 13:11:45,346 INFO L451 ceAbstractionStarter]: At program point __signbit_floatENTRY(lines 44 54) the Hoare annotation is: true [2018-12-09 13:11:45,347 INFO L448 ceAbstractionStarter]: For program point L47-1(lines 47 51) no Hoare annotation was computed. [2018-12-09 13:11:45,347 INFO L444 ceAbstractionStarter]: At program point L47-2(lines 47 51) the Hoare annotation is: (= |__signbit_float_#in~x| __signbit_float_~x) [2018-12-09 13:11:45,347 INFO L448 ceAbstractionStarter]: For program point L47-3(lines 47 51) no Hoare annotation was computed. [2018-12-09 13:11:45,347 INFO L448 ceAbstractionStarter]: For program point __signbit_floatEXIT(lines 44 54) no Hoare annotation was computed. [2018-12-09 13:11:45,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 01:11:45 BoogieIcfgContainer [2018-12-09 13:11:45,354 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 13:11:45,354 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 13:11:45,354 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 13:11:45,355 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 13:11:45,355 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:11:42" (3/4) ... [2018-12-09 13:11:45,357 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 13:11:45,361 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fmin_float [2018-12-09 13:11:45,361 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 13:11:45,361 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 13:11:45,361 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_float [2018-12-09 13:11:45,361 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_float [2018-12-09 13:11:45,364 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2018-12-09 13:11:45,364 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-12-09 13:11:45,364 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 13:11:45,380 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: x == \old(x) [2018-12-09 13:11:45,380 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-12-09 13:11:45,395 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_889bc1af-049d-4ede-b384-902e8140cb1d/bin-2019/utaipan/witness.graphml [2018-12-09 13:11:45,395 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 13:11:45,396 INFO L168 Benchmark]: Toolchain (without parser) took 3035.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 943.4 MB in the beginning and 827.1 MB in the end (delta: 116.3 MB). Peak memory consumption was 250.5 MB. Max. memory is 11.5 GB. [2018-12-09 13:11:45,397 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 13:11:45,397 INFO L168 Benchmark]: CACSL2BoogieTranslator took 147.74 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 13:11:45,397 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.50 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-09 13:11:45,398 INFO L168 Benchmark]: Boogie Preprocessor took 19.46 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 13:11:45,398 INFO L168 Benchmark]: RCFGBuilder took 241.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -176.1 MB). Peak memory consumption was 14.0 MB. Max. memory is 11.5 GB. [2018-12-09 13:11:45,398 INFO L168 Benchmark]: TraceAbstraction took 2567.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 833.7 MB in the end (delta: 269.7 MB). Peak memory consumption was 269.7 MB. Max. memory is 11.5 GB. [2018-12-09 13:11:45,398 INFO L168 Benchmark]: Witness Printer took 40.98 ms. Allocated memory is still 1.2 GB. Free memory was 833.7 MB in the beginning and 827.1 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2018-12-09 13:11:45,399 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 147.74 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.50 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.46 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 241.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -176.1 MB). Peak memory consumption was 14.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2567.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 833.7 MB in the end (delta: 269.7 MB). Peak memory consumption was 269.7 MB. Max. memory is 11.5 GB. * Witness Printer took 40.98 ms. Allocated memory is still 1.2 GB. Free memory was 833.7 MB in the beginning and 827.1 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 70]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: x == \old(x) - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: \old(x) == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. SAFE Result, 2.5s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 1.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 296 SDtfs, 121 SDslu, 975 SDs, 0 SdLazy, 365 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 242 GetRequests, 187 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 31 PreInvPairs, 38 NumberOfFragments, 68 HoareAnnotationTreeSize, 31 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 231 NumberOfCodeBlocks, 231 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 223 ConstructedInterpolants, 14 QuantifiedInterpolants, 20350 SizeOfPredicates, 21 NumberOfNonLiveVariables, 650 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 30/30 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...