./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1232b_false-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_d2760e0a-995e-404f-8886-3d42b18bf995/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d2760e0a-995e-404f-8886-3d42b18bf995/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d2760e0a-995e-404f-8886-3d42b18bf995/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d2760e0a-995e-404f-8886-3d42b18bf995/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232b_false-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_d2760e0a-995e-404f-8886-3d42b18bf995/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d2760e0a-995e-404f-8886-3d42b18bf995/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 36a0a55241cede481b157c1ab9f348d708a5b166 ............................................................................................................................................................................................................................................................................................................................................................................................ 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_d2760e0a-995e-404f-8886-3d42b18bf995/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d2760e0a-995e-404f-8886-3d42b18bf995/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d2760e0a-995e-404f-8886-3d42b18bf995/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d2760e0a-995e-404f-8886-3d42b18bf995/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232b_false-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_d2760e0a-995e-404f-8886-3d42b18bf995/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d2760e0a-995e-404f-8886-3d42b18bf995/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 36a0a55241cede481b157c1ab9f348d708a5b166 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-0cd3be1 [2018-11-28 13:18:46,759 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 13:18:46,760 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 13:18:46,767 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 13:18:46,768 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 13:18:46,768 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 13:18:46,769 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 13:18:46,770 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 13:18:46,771 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 13:18:46,772 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 13:18:46,773 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 13:18:46,773 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 13:18:46,773 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 13:18:46,774 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 13:18:46,775 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 13:18:46,775 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 13:18:46,776 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 13:18:46,777 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 13:18:46,778 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 13:18:46,779 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 13:18:46,779 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 13:18:46,780 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 13:18:46,782 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 13:18:46,782 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 13:18:46,782 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 13:18:46,783 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 13:18:46,784 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 13:18:46,784 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 13:18:46,785 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 13:18:46,785 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 13:18:46,786 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 13:18:46,786 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 13:18:46,786 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 13:18:46,786 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 13:18:46,787 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 13:18:46,787 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 13:18:46,788 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d2760e0a-995e-404f-8886-3d42b18bf995/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 13:18:46,798 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 13:18:46,798 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 13:18:46,798 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 13:18:46,799 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 13:18:46,799 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 13:18:46,799 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 13:18:46,799 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 13:18:46,799 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 13:18:46,800 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 13:18:46,800 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 13:18:46,800 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 13:18:46,800 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 13:18:46,800 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 13:18:46,800 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 13:18:46,800 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 13:18:46,801 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 13:18:46,801 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 13:18:46,801 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 13:18:46,801 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 13:18:46,801 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 13:18:46,801 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 13:18:46,802 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 13:18:46,802 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 13:18:46,802 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 13:18:46,802 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 13:18:46,802 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 13:18:46,802 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 13:18:46,802 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 13:18:46,803 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 13:18:46,803 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 13:18:46,803 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_d2760e0a-995e-404f-8886-3d42b18bf995/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 36a0a55241cede481b157c1ab9f348d708a5b166 [2018-11-28 13:18:46,825 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 13:18:46,833 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 13:18:46,835 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 13:18:46,836 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 13:18:46,836 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 13:18:46,836 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d2760e0a-995e-404f-8886-3d42b18bf995/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1232b_false-unreach-call.c [2018-11-28 13:18:46,873 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d2760e0a-995e-404f-8886-3d42b18bf995/bin-2019/uautomizer/data/7f0732590/d562bcfcf67141608c4591509f73e32b/FLAG4657ee101 [2018-11-28 13:18:47,277 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 13:18:47,277 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d2760e0a-995e-404f-8886-3d42b18bf995/sv-benchmarks/c/float-newlib/float_req_bl_1232b_false-unreach-call.c [2018-11-28 13:18:47,282 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d2760e0a-995e-404f-8886-3d42b18bf995/bin-2019/uautomizer/data/7f0732590/d562bcfcf67141608c4591509f73e32b/FLAG4657ee101 [2018-11-28 13:18:47,291 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d2760e0a-995e-404f-8886-3d42b18bf995/bin-2019/uautomizer/data/7f0732590/d562bcfcf67141608c4591509f73e32b [2018-11-28 13:18:47,292 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 13:18:47,293 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 13:18:47,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 13:18:47,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 13:18:47,297 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 13:18:47,297 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:18:47" (1/1) ... [2018-11-28 13:18:47,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a0cbf9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:18:47, skipping insertion in model container [2018-11-28 13:18:47,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:18:47" (1/1) ... [2018-11-28 13:18:47,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 13:18:47,321 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 13:18:47,456 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:18:47,459 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 13:18:47,479 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:18:47,496 INFO L195 MainTranslator]: Completed translation [2018-11-28 13:18:47,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:18:47 WrapperNode [2018-11-28 13:18:47,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 13:18:47,497 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 13:18:47,497 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 13:18:47,497 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 13:18:47,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:18:47" (1/1) ... [2018-11-28 13:18:47,512 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:18:47" (1/1) ... [2018-11-28 13:18:47,518 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 13:18:47,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 13:18:47,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 13:18:47,519 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 13:18:47,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:18:47" (1/1) ... [2018-11-28 13:18:47,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:18:47" (1/1) ... [2018-11-28 13:18:47,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:18:47" (1/1) ... [2018-11-28 13:18:47,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:18:47" (1/1) ... [2018-11-28 13:18:47,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:18:47" (1/1) ... [2018-11-28 13:18:47,587 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:18:47" (1/1) ... [2018-11-28 13:18:47,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:18:47" (1/1) ... [2018-11-28 13:18:47,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 13:18:47,589 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 13:18:47,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 13:18:47,589 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 13:18:47,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:18:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d2760e0a-995e-404f-8886-3d42b18bf995/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 13:18:47,624 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 13:18:47,625 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 13:18:47,625 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-11-28 13:18:47,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-11-28 13:18:47,625 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2018-11-28 13:18:47,625 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2018-11-28 13:18:47,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 13:18:47,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 13:18:47,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-28 13:18:47,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 13:18:47,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 13:18:47,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 13:18:47,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 13:18:47,626 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-11-28 13:18:47,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-11-28 13:18:47,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 13:18:47,849 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 13:18:47,849 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-28 13:18:47,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:18:47 BoogieIcfgContainer [2018-11-28 13:18:47,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 13:18:47,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 13:18:47,851 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 13:18:47,853 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 13:18:47,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 01:18:47" (1/3) ... [2018-11-28 13:18:47,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@580dfbf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 01:18:47, skipping insertion in model container [2018-11-28 13:18:47,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:18:47" (2/3) ... [2018-11-28 13:18:47,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@580dfbf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 01:18:47, skipping insertion in model container [2018-11-28 13:18:47,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:18:47" (3/3) ... [2018-11-28 13:18:47,856 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232b_false-unreach-call.c [2018-11-28 13:18:47,866 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 13:18:47,871 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 13:18:47,881 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 13:18:47,900 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 13:18:47,901 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 13:18:47,901 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 13:18:47,901 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 13:18:47,901 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 13:18:47,901 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 13:18:47,901 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 13:18:47,901 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 13:18:47,901 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 13:18:47,913 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-11-28 13:18:47,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-28 13:18:47,917 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:18:47,918 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] [2018-11-28 13:18:47,920 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:18:47,923 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:18:47,923 INFO L82 PathProgramCache]: Analyzing trace with hash 2127055292, now seen corresponding path program 1 times [2018-11-28 13:18:47,924 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:18:47,924 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:18:47,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:18:47,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:18:47,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:18:47,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:18:48,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:18:48,019 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:18:48,020 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 13:18:48,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 13:18:48,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 13:18:48,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 13:18:48,032 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2018-11-28 13:18:48,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:18:48,048 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2018-11-28 13:18:48,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 13:18:48,048 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-11-28 13:18:48,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:18:48,054 INFO L225 Difference]: With dead ends: 79 [2018-11-28 13:18:48,054 INFO L226 Difference]: Without dead ends: 40 [2018-11-28 13:18:48,056 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 [2018-11-28 13:18:48,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-28 13:18:48,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-11-28 13:18:48,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-28 13:18:48,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-11-28 13:18:48,086 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2018-11-28 13:18:48,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:18:48,087 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-11-28 13:18:48,087 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 13:18:48,087 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-11-28 13:18:48,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-28 13:18:48,088 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:18:48,088 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] [2018-11-28 13:18:48,088 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:18:48,089 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:18:48,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1720731955, now seen corresponding path program 1 times [2018-11-28 13:18:48,089 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:18:48,089 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:18:48,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:18:48,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:18:48,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:18:48,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:18:48,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:18:48,148 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:18:48,148 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 13:18:48,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 13:18:48,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 13:18:48,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 13:18:48,150 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-11-28 13:18:48,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:18:48,174 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2018-11-28 13:18:48,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 13:18:48,174 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-11-28 13:18:48,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:18:48,177 INFO L225 Difference]: With dead ends: 59 [2018-11-28 13:18:48,177 INFO L226 Difference]: Without dead ends: 44 [2018-11-28 13:18:48,178 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 [2018-11-28 13:18:48,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-28 13:18:48,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-11-28 13:18:48,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-28 13:18:48,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-11-28 13:18:48,185 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2018-11-28 13:18:48,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:18:48,186 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-11-28 13:18:48,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 13:18:48,186 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-11-28 13:18:48,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-28 13:18:48,187 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:18:48,187 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] [2018-11-28 13:18:48,187 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:18:48,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:18:48,187 INFO L82 PathProgramCache]: Analyzing trace with hash 185784867, now seen corresponding path program 1 times [2018-11-28 13:18:48,187 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:18:48,188 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:18:48,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:18:48,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:18:48,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:18:48,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:18:48,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:18:48,236 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:18:48,236 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 13:18:48,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 13:18:48,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 13:18:48,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 13:18:48,237 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 4 states. [2018-11-28 13:18:48,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:18:48,278 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2018-11-28 13:18:48,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 13:18:48,279 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-11-28 13:18:48,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:18:48,279 INFO L225 Difference]: With dead ends: 63 [2018-11-28 13:18:48,280 INFO L226 Difference]: Without dead ends: 48 [2018-11-28 13:18:48,280 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 [2018-11-28 13:18:48,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-28 13:18:48,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-11-28 13:18:48,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-28 13:18:48,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-11-28 13:18:48,284 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2018-11-28 13:18:48,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:18:48,285 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-11-28 13:18:48,285 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 13:18:48,285 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-11-28 13:18:48,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-28 13:18:48,285 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:18:48,286 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] [2018-11-28 13:18:48,286 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:18:48,286 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:18:48,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1611166492, now seen corresponding path program 1 times [2018-11-28 13:18:48,286 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:18:48,286 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:18:48,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:18:48,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:18:48,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:18:48,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:18:48,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:18:48,331 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 13:18:48,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 01:18:48 BoogieIcfgContainer [2018-11-28 13:18:48,353 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 13:18:48,354 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 13:18:48,354 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 13:18:48,354 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 13:18:48,355 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:18:47" (3/4) ... [2018-11-28 13:18:48,358 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 13:18:48,358 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 13:18:48,358 INFO L168 Benchmark]: Toolchain (without parser) took 1065.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 952.2 MB in the beginning and 1.1 GB in the end (delta: -113.9 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2018-11-28 13:18:48,360 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:18:48,360 INFO L168 Benchmark]: CACSL2BoogieTranslator took 203.24 ms. Allocated memory is still 1.0 GB. Free memory was 952.2 MB in the beginning and 941.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-11-28 13:18:48,361 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.04 ms. Allocated memory is still 1.0 GB. Free memory was 941.4 MB in the beginning and 938.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-28 13:18:48,361 INFO L168 Benchmark]: Boogie Preprocessor took 70.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 938.7 MB in the beginning and 1.1 GB in the end (delta: -196.6 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. [2018-11-28 13:18:48,362 INFO L168 Benchmark]: RCFGBuilder took 260.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. [2018-11-28 13:18:48,362 INFO L168 Benchmark]: TraceAbstraction took 502.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 48.3 MB). Peak memory consumption was 48.3 MB. Max. memory is 11.5 GB. [2018-11-28 13:18:48,362 INFO L168 Benchmark]: Witness Printer took 4.05 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:18:48,364 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 203.24 ms. Allocated memory is still 1.0 GB. Free memory was 952.2 MB in the beginning and 941.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 21.04 ms. Allocated memory is still 1.0 GB. Free memory was 941.4 MB in the beginning and 938.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 70.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 938.7 MB in the beginning and 1.1 GB in the end (delta: -196.6 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 260.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 502.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 48.3 MB). Peak memory consumption was 48.3 MB. Max. memory is 11.5 GB. * Witness Printer took 4.05 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 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 64. Possible FailurePath: [L64] float x = -0.0f; [L65] float y = 0.0f; VAL [y=0] [L66] CALL, EXPR fmin_float(x, y) VAL [\old(x)=4286578691, \old(y)=0] [L36] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=4286578691] [L13] __uint32_t w; VAL [\old(x)=4286578691, x=4286578691] [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)=4286578691, w=4286578689, x=4286578691] [L23-L24] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=4286578691, w=4286578689, x=4286578691] [L26-L27] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=4286578691, w=4286578689, x=4286578691] [L29] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L32] return 0; VAL [\old(x)=4286578691, \result=0, w=4286578689, x=4286578691] [L36] RET, EXPR __fpclassify_float(x) VAL [\old(x)=4286578691, \old(y)=0, __fpclassify_float(x)=0, x=4286578691, y=0] [L36] COND TRUE __fpclassify_float(x) == 0 [L37] return y; VAL [\old(x)=4286578691, \old(y)=0, \result=0, x=4286578691, y=0] [L66] RET, EXPR fmin_float(x, y) VAL [fmin_float(x, y)=0, x=4286578691, y=0] [L66] float res = fmin_float(x, y); [L69] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [res=0, res == -0.0f && __signbit_float(res) == 1=0, x=4286578691, y=0] [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L70] __VERIFIER_error() VAL [res=0, x=4286578691, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. UNSAFE Result, 0.4s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.1s 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 0.1.23-0cd3be1 [2018-11-28 13:18:49,852 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 13:18:49,853 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 13:18:49,862 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 13:18:49,862 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 13:18:49,863 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 13:18:49,864 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 13:18:49,865 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 13:18:49,866 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 13:18:49,867 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 13:18:49,868 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 13:18:49,868 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 13:18:49,869 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 13:18:49,869 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 13:18:49,870 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 13:18:49,871 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 13:18:49,871 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 13:18:49,873 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 13:18:49,874 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 13:18:49,875 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 13:18:49,876 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 13:18:49,877 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 13:18:49,879 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 13:18:49,879 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 13:18:49,879 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 13:18:49,880 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 13:18:49,880 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 13:18:49,881 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 13:18:49,881 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 13:18:49,882 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 13:18:49,882 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 13:18:49,883 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 13:18:49,883 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 13:18:49,883 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 13:18:49,884 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 13:18:49,884 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 13:18:49,884 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d2760e0a-995e-404f-8886-3d42b18bf995/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-28 13:18:49,894 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 13:18:49,895 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 13:18:49,895 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 13:18:49,895 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 13:18:49,896 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 13:18:49,896 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 13:18:49,896 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 13:18:49,896 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 13:18:49,897 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 13:18:49,897 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 13:18:49,897 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 13:18:49,897 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 13:18:49,897 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 13:18:49,897 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 13:18:49,897 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-28 13:18:49,897 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-28 13:18:49,898 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 13:18:49,898 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 13:18:49,898 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 13:18:49,898 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 13:18:49,898 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 13:18:49,898 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 13:18:49,898 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 13:18:49,899 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 13:18:49,899 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 13:18:49,899 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 13:18:49,899 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 13:18:49,899 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 13:18:49,899 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-28 13:18:49,899 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 13:18:49,900 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-11-28 13:18:49,900 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-28 13:18:49,900 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_d2760e0a-995e-404f-8886-3d42b18bf995/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 36a0a55241cede481b157c1ab9f348d708a5b166 [2018-11-28 13:18:49,925 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 13:18:49,933 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 13:18:49,935 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 13:18:49,936 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 13:18:49,936 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 13:18:49,937 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d2760e0a-995e-404f-8886-3d42b18bf995/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1232b_false-unreach-call.c [2018-11-28 13:18:49,973 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d2760e0a-995e-404f-8886-3d42b18bf995/bin-2019/uautomizer/data/c98b794f1/453eacaa1ec549d6af1abf298ddb7e7c/FLAG94e4f8f5a [2018-11-28 13:18:50,374 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 13:18:50,374 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d2760e0a-995e-404f-8886-3d42b18bf995/sv-benchmarks/c/float-newlib/float_req_bl_1232b_false-unreach-call.c [2018-11-28 13:18:50,379 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d2760e0a-995e-404f-8886-3d42b18bf995/bin-2019/uautomizer/data/c98b794f1/453eacaa1ec549d6af1abf298ddb7e7c/FLAG94e4f8f5a [2018-11-28 13:18:50,388 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d2760e0a-995e-404f-8886-3d42b18bf995/bin-2019/uautomizer/data/c98b794f1/453eacaa1ec549d6af1abf298ddb7e7c [2018-11-28 13:18:50,391 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 13:18:50,392 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 13:18:50,392 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 13:18:50,392 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 13:18:50,395 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 13:18:50,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:18:50" (1/1) ... [2018-11-28 13:18:50,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c607cea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:18:50, skipping insertion in model container [2018-11-28 13:18:50,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:18:50" (1/1) ... [2018-11-28 13:18:50,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 13:18:50,413 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 13:18:50,526 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:18:50,530 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 13:18:50,548 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:18:50,566 INFO L195 MainTranslator]: Completed translation [2018-11-28 13:18:50,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:18:50 WrapperNode [2018-11-28 13:18:50,567 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 13:18:50,568 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 13:18:50,568 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 13:18:50,568 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 13:18:50,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:18:50" (1/1) ... [2018-11-28 13:18:50,581 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:18:50" (1/1) ... [2018-11-28 13:18:50,586 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 13:18:50,587 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 13:18:50,587 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 13:18:50,587 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 13:18:50,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:18:50" (1/1) ... [2018-11-28 13:18:50,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:18:50" (1/1) ... [2018-11-28 13:18:50,595 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:18:50" (1/1) ... [2018-11-28 13:18:50,595 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:18:50" (1/1) ... [2018-11-28 13:18:50,602 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:18:50" (1/1) ... [2018-11-28 13:18:50,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:18:50" (1/1) ... [2018-11-28 13:18:50,607 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:18:50" (1/1) ... [2018-11-28 13:18:50,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 13:18:50,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 13:18:50,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 13:18:50,609 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 13:18:50,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:18:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d2760e0a-995e-404f-8886-3d42b18bf995/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 13:18:50,684 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 13:18:50,684 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 13:18:50,684 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-11-28 13:18:50,684 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-11-28 13:18:50,685 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2018-11-28 13:18:50,685 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2018-11-28 13:18:50,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 13:18:50,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 13:18:50,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 13:18:50,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-28 13:18:50,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 13:18:50,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 13:18:50,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-11-28 13:18:50,685 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-11-28 13:18:50,685 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-11-28 13:18:50,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 13:18:50,854 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 13:18:50,881 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 13:18:50,884 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 13:18:50,884 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-28 13:18:50,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:18:50 BoogieIcfgContainer [2018-11-28 13:18:50,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 13:18:50,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 13:18:50,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 13:18:50,888 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 13:18:50,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 01:18:50" (1/3) ... [2018-11-28 13:18:50,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74b21d9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 01:18:50, skipping insertion in model container [2018-11-28 13:18:50,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:18:50" (2/3) ... [2018-11-28 13:18:50,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74b21d9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 01:18:50, skipping insertion in model container [2018-11-28 13:18:50,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:18:50" (3/3) ... [2018-11-28 13:18:50,890 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232b_false-unreach-call.c [2018-11-28 13:18:50,896 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 13:18:50,901 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 13:18:50,910 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 13:18:50,931 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 13:18:50,931 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 13:18:50,931 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 13:18:50,931 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 13:18:50,932 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 13:18:50,932 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 13:18:50,932 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 13:18:50,932 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 13:18:50,932 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 13:18:50,943 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-11-28 13:18:50,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-28 13:18:50,946 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:18:50,947 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] [2018-11-28 13:18:50,948 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:18:50,952 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:18:50,952 INFO L82 PathProgramCache]: Analyzing trace with hash 148552213, now seen corresponding path program 1 times [2018-11-28 13:18:50,954 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 13:18:50,955 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d2760e0a-995e-404f-8886-3d42b18bf995/bin-2019/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-11-28 13:18:50,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:18:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:18:51,005 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:18:51,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:18:51,017 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 13:18:51,025 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:18:51,025 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 13:18:51,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 13:18:51,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 13:18:51,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 13:18:51,036 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-11-28 13:18:51,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:18:51,052 INFO L93 Difference]: Finished difference Result 75 states and 103 transitions. [2018-11-28 13:18:51,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 13:18:51,053 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-11-28 13:18:51,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:18:51,059 INFO L225 Difference]: With dead ends: 75 [2018-11-28 13:18:51,060 INFO L226 Difference]: Without dead ends: 38 [2018-11-28 13:18:51,062 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 [2018-11-28 13:18:51,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-28 13:18:51,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-11-28 13:18:51,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-28 13:18:51,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2018-11-28 13:18:51,090 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 21 [2018-11-28 13:18:51,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:18:51,091 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2018-11-28 13:18:51,091 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 13:18:51,091 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2018-11-28 13:18:51,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-28 13:18:51,092 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:18:51,092 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] [2018-11-28 13:18:51,093 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:18:51,098 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:18:51,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1171864516, now seen corresponding path program 1 times [2018-11-28 13:18:51,099 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 13:18:51,099 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d2760e0a-995e-404f-8886-3d42b18bf995/bin-2019/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-11-28 13:18:51,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:18:51,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:18:51,142 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:18:51,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:18:51,169 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 13:18:51,176 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:18:51,176 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 13:18:51,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 13:18:51,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 13:18:51,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 13:18:51,178 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 4 states. [2018-11-28 13:18:51,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:18:51,201 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2018-11-28 13:18:51,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 13:18:51,202 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-11-28 13:18:51,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:18:51,204 INFO L225 Difference]: With dead ends: 56 [2018-11-28 13:18:51,204 INFO L226 Difference]: Without dead ends: 41 [2018-11-28 13:18:51,205 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 [2018-11-28 13:18:51,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-28 13:18:51,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-28 13:18:51,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-28 13:18:51,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2018-11-28 13:18:51,212 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 22 [2018-11-28 13:18:51,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:18:51,212 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2018-11-28 13:18:51,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 13:18:51,213 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2018-11-28 13:18:51,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-28 13:18:51,213 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:18:51,214 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] [2018-11-28 13:18:51,214 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:18:51,214 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:18:51,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1456590866, now seen corresponding path program 1 times [2018-11-28 13:18:51,215 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 13:18:51,215 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d2760e0a-995e-404f-8886-3d42b18bf995/bin-2019/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-11-28 13:18:51,223 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:18:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:18:51,254 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:18:51,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:18:51,345 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 13:18:51,352 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:18:51,352 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 13:18:51,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 13:18:51,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 13:18:51,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-28 13:18:51,353 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 8 states. [2018-11-28 13:18:51,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:18:51,726 INFO L93 Difference]: Finished difference Result 60 states and 73 transitions. [2018-11-28 13:18:51,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 13:18:51,726 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2018-11-28 13:18:51,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:18:51,727 INFO L225 Difference]: With dead ends: 60 [2018-11-28 13:18:51,728 INFO L226 Difference]: Without dead ends: 40 [2018-11-28 13:18:51,728 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 [2018-11-28 13:18:51,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-28 13:18:51,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-11-28 13:18:51,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-28 13:18:51,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2018-11-28 13:18:51,732 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 23 [2018-11-28 13:18:51,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:18:51,732 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2018-11-28 13:18:51,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 13:18:51,732 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2018-11-28 13:18:51,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-28 13:18:51,733 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:18:51,733 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] [2018-11-28 13:18:51,733 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:18:51,733 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:18:51,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1971562729, now seen corresponding path program 1 times [2018-11-28 13:18:51,734 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 13:18:51,734 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d2760e0a-995e-404f-8886-3d42b18bf995/bin-2019/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-11-28 13:18:51,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:18:51,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:18:51,776 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:18:51,790 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-28 13:18:51,790 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 13:18:51,797 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:18:51,797 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 13:18:51,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 13:18:51,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 13:18:51,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 13:18:51,798 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 4 states. [2018-11-28 13:18:51,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:18:51,815 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2018-11-28 13:18:51,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 13:18:51,815 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-11-28 13:18:51,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:18:51,816 INFO L225 Difference]: With dead ends: 56 [2018-11-28 13:18:51,816 INFO L226 Difference]: Without dead ends: 41 [2018-11-28 13:18:51,817 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 [2018-11-28 13:18:51,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-28 13:18:51,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-28 13:18:51,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-28 13:18:51,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2018-11-28 13:18:51,821 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 30 [2018-11-28 13:18:51,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:18:51,821 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2018-11-28 13:18:51,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 13:18:51,821 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2018-11-28 13:18:51,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-28 13:18:51,822 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:18:51,822 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] [2018-11-28 13:18:51,822 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:18:51,822 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:18:51,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1323623109, now seen corresponding path program 1 times [2018-11-28 13:18:51,823 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 13:18:51,823 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d2760e0a-995e-404f-8886-3d42b18bf995/bin-2019/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-11-28 13:18:51,827 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:18:51,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:18:51,866 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:18:51,961 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 13:18:51,961 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 13:18:51,968 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:18:51,969 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 13:18:51,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 13:18:51,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 13:18:51,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-28 13:18:51,969 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 8 states. [2018-11-28 13:18:52,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:18:52,261 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2018-11-28 13:18:52,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 13:18:52,261 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-11-28 13:18:52,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:18:52,262 INFO L225 Difference]: With dead ends: 58 [2018-11-28 13:18:52,262 INFO L226 Difference]: Without dead ends: 35 [2018-11-28 13:18:52,262 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 [2018-11-28 13:18:52,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-28 13:18:52,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-11-28 13:18:52,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-28 13:18:52,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-11-28 13:18:52,267 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 31 [2018-11-28 13:18:52,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:18:52,267 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-11-28 13:18:52,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 13:18:52,267 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-11-28 13:18:52,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-28 13:18:52,267 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:18:52,267 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] [2018-11-28 13:18:52,268 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:18:52,268 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:18:52,268 INFO L82 PathProgramCache]: Analyzing trace with hash 207693948, now seen corresponding path program 1 times [2018-11-28 13:18:52,268 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 13:18:52,268 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d2760e0a-995e-404f-8886-3d42b18bf995/bin-2019/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-11-28 13:18:52,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:18:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:18:52,306 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:18:52,354 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-28 13:18:52,354 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 13:18:52,361 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:18:52,361 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 13:18:52,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 13:18:52,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 13:18:52,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 13:18:52,362 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 5 states. [2018-11-28 13:18:52,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:18:52,420 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2018-11-28 13:18:52,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 13:18:52,421 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-11-28 13:18:52,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:18:52,421 INFO L225 Difference]: With dead ends: 51 [2018-11-28 13:18:52,421 INFO L226 Difference]: Without dead ends: 35 [2018-11-28 13:18:52,422 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 [2018-11-28 13:18:52,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-28 13:18:52,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-11-28 13:18:52,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-28 13:18:52,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2018-11-28 13:18:52,426 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 32 [2018-11-28 13:18:52,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:18:52,426 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2018-11-28 13:18:52,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 13:18:52,427 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2018-11-28 13:18:52,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-28 13:18:52,427 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:18:52,428 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] [2018-11-28 13:18:52,428 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:18:52,428 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:18:52,428 INFO L82 PathProgramCache]: Analyzing trace with hash -601652678, now seen corresponding path program 1 times [2018-11-28 13:18:52,428 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 13:18:52,428 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d2760e0a-995e-404f-8886-3d42b18bf995/bin-2019/uautomizer/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 [2018-11-28 13:18:52,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:18:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:18:52,472 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:18:52,536 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-28 13:18:52,536 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 13:18:52,542 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:18:52,543 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 13:18:52,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 13:18:52,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 13:18:52,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-28 13:18:52,543 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 8 states. [2018-11-28 13:18:52,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:18:52,693 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-11-28 13:18:52,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 13:18:52,693 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-11-28 13:18:52,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:18:52,694 INFO L225 Difference]: With dead ends: 38 [2018-11-28 13:18:52,694 INFO L226 Difference]: Without dead ends: 35 [2018-11-28 13:18:52,695 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 [2018-11-28 13:18:52,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-28 13:18:52,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-11-28 13:18:52,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-28 13:18:52,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-11-28 13:18:52,698 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2018-11-28 13:18:52,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:18:52,698 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-11-28 13:18:52,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 13:18:52,698 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-11-28 13:18:52,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-28 13:18:52,699 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:18:52,699 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] [2018-11-28 13:18:52,699 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:18:52,699 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:18:52,700 INFO L82 PathProgramCache]: Analyzing trace with hash -193082209, now seen corresponding path program 1 times [2018-11-28 13:18:52,700 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 13:18:52,700 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d2760e0a-995e-404f-8886-3d42b18bf995/bin-2019/uautomizer/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 [2018-11-28 13:18:52,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:18:52,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:18:52,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:18:52,834 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 13:18:52,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 01:18:52 BoogieIcfgContainer [2018-11-28 13:18:52,870 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 13:18:52,870 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 13:18:52,870 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 13:18:52,870 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 13:18:52,871 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:18:50" (3/4) ... [2018-11-28 13:18:52,873 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-28 13:18:52,925 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_d2760e0a-995e-404f-8886-3d42b18bf995/bin-2019/uautomizer/witness.graphml [2018-11-28 13:18:52,925 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 13:18:52,926 INFO L168 Benchmark]: Toolchain (without parser) took 2534.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 943.4 MB in the beginning and 897.5 MB in the end (delta: 45.9 MB). Peak memory consumption was 192.1 MB. Max. memory is 11.5 GB. [2018-11-28 13:18:52,927 INFO L168 Benchmark]: CDTParser took 0.13 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. [2018-11-28 13:18:52,928 INFO L168 Benchmark]: CACSL2BoogieTranslator took 174.89 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. [2018-11-28 13:18:52,928 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.05 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. [2018-11-28 13:18:52,928 INFO L168 Benchmark]: Boogie Preprocessor took 21.82 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. [2018-11-28 13:18:52,929 INFO L168 Benchmark]: RCFGBuilder took 275.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -189.2 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. [2018-11-28 13:18:52,929 INFO L168 Benchmark]: TraceAbstraction took 1984.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 904.2 MB in the end (delta: 212.2 MB). Peak memory consumption was 212.2 MB. Max. memory is 11.5 GB. [2018-11-28 13:18:52,929 INFO L168 Benchmark]: Witness Printer took 55.52 ms. Allocated memory is still 1.2 GB. Free memory was 904.2 MB in the beginning and 897.5 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-11-28 13:18:52,932 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 174.89 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 19.05 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 21.82 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 275.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -189.2 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1984.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 904.2 MB in the end (delta: 212.2 MB). Peak memory consumption was 212.2 MB. Max. memory is 11.5 GB. * Witness Printer took 55.52 ms. Allocated memory is still 1.2 GB. Free memory was 904.2 MB in the beginning and 897.5 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 70]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L64] float x = -0.0f; [L65] float y = 0.0f; VAL [x=0.0, y=0.0] [L66] CALL, EXPR fmin_float(x, y) VAL [\old(x)=0.0, \old(y)=0.0] [L36] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0.0] [L13] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (w) = gf_u.word [L21] COND TRUE w == 0x00000000 || w == 0x80000000 [L22] return 2; VAL [\old(x)=0.0, \result=2, w=2147483648, x=0.0] [L36] RET, EXPR __fpclassify_float(x) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_float(x)=2, x=0.0, y=0.0] [L36] COND FALSE !(__fpclassify_float(x) == 0) [L38] CALL, EXPR __fpclassify_float(y) VAL [\old(x)=0.0] [L13] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (w) = gf_u.word [L21] COND TRUE w == 0x00000000 || w == 0x80000000 [L22] return 2; VAL [\old(x)=0.0, \result=2, w=0, x=0.0] [L38] RET, EXPR __fpclassify_float(y) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_float(y)=2, x=0.0, y=0.0] [L38] COND FALSE !(__fpclassify_float(y) == 0) [L41] EXPR x < y ? x : y VAL [\old(x)=0.0, \old(y)=0.0, x=0.0, x < y ? x : y=0.0, y=0.0] [L41] return x < y ? x : y; [L66] RET, EXPR fmin_float(x, y) VAL [fmin_float(x, y)=0.0, x=0.0, y=0.0] [L66] float res = fmin_float(x, y); [L69] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [res=0.0, res == -0.0f && __signbit_float(res) == 1=1, x=0.0, y=0.0] [L69] CALL, EXPR __signbit_float(res) VAL [\old(x)=0.0] [L45] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L48] ieee_float_shape_type gf_u; [L49] gf_u.value = (x) [L50] EXPR gf_u.word [L50] (w) = gf_u.word [L53] return (w & 0x80000000) != 0; VAL [\old(x)=0.0, \result=0, w=0, x=0.0] [L69] RET, EXPR __signbit_float(res) VAL [__signbit_float(res)=0, res=0.0, res == -0.0f && __signbit_float(res) == 1=1, x=0.0, y=0.0] [L69] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [__signbit_float(res)=0, res=0.0, res == -0.0f && __signbit_float(res) == 1=0, x=0.0, y=0.0] [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L70] __VERIFIER_error() VAL [res=0.0, x=0.0, y=0.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. UNSAFE Result, 1.9s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 272 SDtfs, 111 SDslu, 739 SDs, 0 SdLazy, 268 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 196 GetRequests, 159 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 231 NumberOfCodeBlocks, 231 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 184 ConstructedInterpolants, 12 QuantifiedInterpolants, 13359 SizeOfPredicates, 15 NumberOfNonLiveVariables, 539 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 24/24 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...