./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1250_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_94fd1f87-5444-4a24-aadc-2c22a5e1853b/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_94fd1f87-5444-4a24-aadc-2c22a5e1853b/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_94fd1f87-5444-4a24-aadc-2c22a5e1853b/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_94fd1f87-5444-4a24-aadc-2c22a5e1853b/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1250_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_94fd1f87-5444-4a24-aadc-2c22a5e1853b/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_94fd1f87-5444-4a24-aadc-2c22a5e1853b/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 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 ............................................................................................................................................................................................................................................................................................................................................................................................... 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_94fd1f87-5444-4a24-aadc-2c22a5e1853b/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_94fd1f87-5444-4a24-aadc-2c22a5e1853b/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_94fd1f87-5444-4a24-aadc-2c22a5e1853b/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_94fd1f87-5444-4a24-aadc-2c22a5e1853b/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1250_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_94fd1f87-5444-4a24-aadc-2c22a5e1853b/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_94fd1f87-5444-4a24-aadc-2c22a5e1853b/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 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 09:57:41,739 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 09:57:41,741 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 09:57:41,749 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 09:57:41,749 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 09:57:41,749 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 09:57:41,750 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 09:57:41,751 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 09:57:41,752 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 09:57:41,752 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 09:57:41,753 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 09:57:41,753 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 09:57:41,753 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 09:57:41,754 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 09:57:41,754 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 09:57:41,755 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 09:57:41,755 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 09:57:41,756 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 09:57:41,757 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 09:57:41,758 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 09:57:41,758 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 09:57:41,759 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 09:57:41,760 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 09:57:41,760 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 09:57:41,760 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 09:57:41,761 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 09:57:41,761 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 09:57:41,761 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 09:57:41,762 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 09:57:41,763 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 09:57:41,763 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 09:57:41,763 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 09:57:41,763 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 09:57:41,764 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 09:57:41,764 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 09:57:41,765 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 09:57:41,765 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_94fd1f87-5444-4a24-aadc-2c22a5e1853b/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-09 09:57:41,772 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 09:57:41,773 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 09:57:41,773 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 09:57:41,773 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 09:57:41,774 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 09:57:41,774 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 09:57:41,774 INFO L133 SettingsManager]: * Use SBE=true [2018-12-09 09:57:41,775 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 09:57:41,775 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 09:57:41,775 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 09:57:41,775 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 09:57:41,775 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 09:57:41,775 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 09:57:41,775 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 09:57:41,776 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 09:57:41,776 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 09:57:41,776 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 09:57:41,776 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 09:57:41,776 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 09:57:41,776 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 09:57:41,777 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 09:57:41,777 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 09:57:41,777 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 09:57:41,777 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 09:57:41,777 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 09:57:41,777 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 09:57:41,777 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 09:57:41,778 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-09 09:57:41,778 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 09:57:41,778 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 09:57:41,778 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_94fd1f87-5444-4a24-aadc-2c22a5e1853b/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 -> 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 [2018-12-09 09:57:41,802 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 09:57:41,811 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 09:57:41,813 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 09:57:41,814 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 09:57:41,814 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 09:57:41,815 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_94fd1f87-5444-4a24-aadc-2c22a5e1853b/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1250_true-unreach-call.c [2018-12-09 09:57:41,848 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_94fd1f87-5444-4a24-aadc-2c22a5e1853b/bin-2019/uautomizer/data/f65d64c19/c2edad894a844f48b009c26130d6f283/FLAGa514adb07 [2018-12-09 09:57:42,227 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 09:57:42,227 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_94fd1f87-5444-4a24-aadc-2c22a5e1853b/sv-benchmarks/c/float-newlib/float_req_bl_1250_true-unreach-call.c [2018-12-09 09:57:42,231 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_94fd1f87-5444-4a24-aadc-2c22a5e1853b/bin-2019/uautomizer/data/f65d64c19/c2edad894a844f48b009c26130d6f283/FLAGa514adb07 [2018-12-09 09:57:42,239 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_94fd1f87-5444-4a24-aadc-2c22a5e1853b/bin-2019/uautomizer/data/f65d64c19/c2edad894a844f48b009c26130d6f283 [2018-12-09 09:57:42,241 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 09:57:42,242 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 09:57:42,242 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 09:57:42,242 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 09:57:42,244 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 09:57:42,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:57:42" (1/1) ... [2018-12-09 09:57:42,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16eade82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:57:42, skipping insertion in model container [2018-12-09 09:57:42,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:57:42" (1/1) ... [2018-12-09 09:57:42,250 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 09:57:42,260 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 09:57:42,350 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 09:57:42,352 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 09:57:42,365 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 09:57:42,377 INFO L195 MainTranslator]: Completed translation [2018-12-09 09:57:42,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:57:42 WrapperNode [2018-12-09 09:57:42,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 09:57:42,378 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 09:57:42,378 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 09:57:42,378 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 09:57:42,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:57:42" (1/1) ... [2018-12-09 09:57:42,388 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:57:42" (1/1) ... [2018-12-09 09:57:42,392 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 09:57:42,392 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 09:57:42,392 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 09:57:42,392 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 09:57:42,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:57:42" (1/1) ... [2018-12-09 09:57:42,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:57:42" (1/1) ... [2018-12-09 09:57:42,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:57:42" (1/1) ... [2018-12-09 09:57:42,428 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:57:42" (1/1) ... [2018-12-09 09:57:42,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:57:42" (1/1) ... [2018-12-09 09:57:42,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:57:42" (1/1) ... [2018-12-09 09:57:42,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:57:42" (1/1) ... [2018-12-09 09:57:42,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 09:57:42,438 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 09:57:42,438 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 09:57:42,438 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 09:57:42,439 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:57:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94fd1f87-5444-4a24-aadc-2c22a5e1853b/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 [2018-12-09 09:57:42,470 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-12-09 09:57:42,470 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-12-09 09:57:42,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 09:57:42,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 09:57:42,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-09 09:57:42,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 09:57:42,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 09:57:42,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 09:57:42,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 09:57:42,470 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 09:57:42,471 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 09:57:42,471 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-12-09 09:57:42,471 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-12-09 09:57:42,471 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-12-09 09:57:42,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-12-09 09:57:42,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 09:57:42,615 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 09:57:42,615 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-09 09:57:42,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:57:42 BoogieIcfgContainer [2018-12-09 09:57:42,615 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 09:57:42,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 09:57:42,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 09:57:42,618 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 09:57:42,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 09:57:42" (1/3) ... [2018-12-09 09:57:42,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fd1b13f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:57:42, skipping insertion in model container [2018-12-09 09:57:42,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:57:42" (2/3) ... [2018-12-09 09:57:42,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fd1b13f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:57:42, skipping insertion in model container [2018-12-09 09:57:42,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:57:42" (3/3) ... [2018-12-09 09:57:42,621 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250_true-unreach-call.c [2018-12-09 09:57:42,630 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 09:57:42,635 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 09:57:42,646 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 09:57:42,668 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 09:57:42,668 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 09:57:42,668 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 09:57:42,668 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 09:57:42,668 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 09:57:42,668 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 09:57:42,669 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 09:57:42,669 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 09:57:42,669 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 09:57:42,680 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-12-09 09:57:42,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-09 09:57:42,683 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:57:42,684 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 09:57:42,685 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:57:42,689 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:57:42,689 INFO L82 PathProgramCache]: Analyzing trace with hash -2093385797, now seen corresponding path program 1 times [2018-12-09 09:57:42,690 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 09:57:42,690 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 09:57:42,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:57:42,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:57:42,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:57:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:57:42,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:57:42,773 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:57:42,773 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 09:57:42,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 09:57:42,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 09:57:42,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 09:57:42,786 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2018-12-09 09:57:42,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:57:42,800 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2018-12-09 09:57:42,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 09:57:42,801 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2018-12-09 09:57:42,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:57:42,807 INFO L225 Difference]: With dead ends: 71 [2018-12-09 09:57:42,807 INFO L226 Difference]: Without dead ends: 36 [2018-12-09 09:57:42,809 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 09:57:42,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-09 09:57:42,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-12-09 09:57:42,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 09:57:42,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-12-09 09:57:42,833 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 26 [2018-12-09 09:57:42,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:57:42,833 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-12-09 09:57:42,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 09:57:42,833 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-12-09 09:57:42,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-09 09:57:42,835 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:57:42,835 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, 1] [2018-12-09 09:57:42,835 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:57:42,835 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:57:42,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1590914468, now seen corresponding path program 1 times [2018-12-09 09:57:42,836 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 09:57:42,836 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 09:57:42,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:57:42,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:57:42,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:57:42,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:57:42,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:57:42,901 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:57:42,901 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 09:57:42,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 09:57:42,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 09:57:42,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 09:57:42,902 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2018-12-09 09:57:42,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:57:42,926 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2018-12-09 09:57:42,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 09:57:42,927 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-12-09 09:57:42,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:57:42,928 INFO L225 Difference]: With dead ends: 51 [2018-12-09 09:57:42,929 INFO L226 Difference]: Without dead ends: 40 [2018-12-09 09:57:42,929 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 09:57:42,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-09 09:57:42,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-12-09 09:57:42,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-09 09:57:42,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-12-09 09:57:42,934 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 27 [2018-12-09 09:57:42,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:57:42,934 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-12-09 09:57:42,935 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 09:57:42,935 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-12-09 09:57:42,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-09 09:57:42,935 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:57:42,935 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, 1, 1, 1, 1] [2018-12-09 09:57:42,935 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:57:42,936 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:57:42,936 INFO L82 PathProgramCache]: Analyzing trace with hash 87255330, now seen corresponding path program 1 times [2018-12-09 09:57:42,936 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 09:57:42,936 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 09:57:42,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:57:42,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:57:42,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:57:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:57:42,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:57:42,975 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:57:42,975 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 09:57:42,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 09:57:42,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 09:57:42,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 09:57:42,976 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-12-09 09:57:42,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:57:42,993 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2018-12-09 09:57:42,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 09:57:42,994 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-12-09 09:57:42,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:57:42,994 INFO L225 Difference]: With dead ends: 55 [2018-12-09 09:57:42,994 INFO L226 Difference]: Without dead ends: 44 [2018-12-09 09:57:42,995 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 09:57:42,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-09 09:57:42,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2018-12-09 09:57:42,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-09 09:57:42,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-12-09 09:57:42,998 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 30 [2018-12-09 09:57:42,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:57:42,999 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-12-09 09:57:42,999 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 09:57:42,999 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-12-09 09:57:42,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-09 09:57:42,999 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:57:42,999 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, 1, 1, 1, 1] [2018-12-09 09:57:43,000 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:57:43,000 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:57:43,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1594807139, now seen corresponding path program 1 times [2018-12-09 09:57:43,000 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 09:57:43,000 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 09:57:43,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:57:43,000 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:57:43,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:57:43,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 09:57:43,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 09:57:43,034 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 09:57:43,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 09:57:43 BoogieIcfgContainer [2018-12-09 09:57:43,052 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 09:57:43,052 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 09:57:43,052 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 09:57:43,052 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 09:57:43,052 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:57:42" (3/4) ... [2018-12-09 09:57:43,055 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-09 09:57:43,055 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 09:57:43,055 INFO L168 Benchmark]: Toolchain (without parser) took 813.95 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 94.4 MB). Free memory was 953.3 MB in the beginning and 1.0 GB in the end (delta: -69.9 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. [2018-12-09 09:57:43,056 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. [2018-12-09 09:57:43,056 INFO L168 Benchmark]: CACSL2BoogieTranslator took 135.37 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. [2018-12-09 09:57:43,057 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.42 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 939.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-09 09:57:43,057 INFO L168 Benchmark]: Boogie Preprocessor took 45.37 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 94.4 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -152.5 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. [2018-12-09 09:57:43,057 INFO L168 Benchmark]: RCFGBuilder took 177.30 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2018-12-09 09:57:43,058 INFO L168 Benchmark]: TraceAbstraction took 436.28 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.1 MB). Peak memory consumption was 52.1 MB. Max. memory is 11.5 GB. [2018-12-09 09:57:43,058 INFO L168 Benchmark]: Witness Printer took 2.69 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 09:57:43,060 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 135.37 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 14.42 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 939.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 45.37 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 94.4 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -152.5 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 177.30 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 436.28 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.1 MB). Peak memory consumption was 52.1 MB. Max. memory is 11.5 GB. * Witness Printer took 2.69 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 65]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 54, overapproximation of someBinaryArithmeticFLOAToperation at line 60. Possible FailurePath: [L60] float x = 0.0f / 0.0f; [L61] float y = 0.0f / 0.0f; [L62] CALL, EXPR fmax_float(x, y) VAL [\old(x)=2139095045, \old(y)=2139095042] [L43] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=2139095045] [L20] __uint32_t w; VAL [\old(x)=2139095045, x=2139095045] [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (w) = gf_u.word [L28] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=2139095045, w=2139095041, x=2139095045] [L30-L31] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=2139095045, w=2139095041, x=2139095045] [L33-L34] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=2139095045, w=2139095041, x=2139095045] [L36] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L39] return 0; VAL [\old(x)=2139095045, \result=0, w=2139095041, x=2139095045] [L43] RET, EXPR __fpclassify_float(x) VAL [\old(x)=2139095045, \old(y)=2139095042, __fpclassify_float(x)=0, x=2139095045, y=2139095042] [L43] COND TRUE __fpclassify_float(x) == 0 [L44] return y; VAL [\old(x)=2139095045, \old(y)=2139095042, \result=2139095042, x=2139095045, y=2139095042] [L62] RET, EXPR fmax_float(x, y) VAL [fmax_float(x, y)=2139095042, x=2139095045, y=2139095042] [L62] float res = fmax_float(x, y); [L64] CALL, EXPR isnan_float(res) VAL [\old(x)=2139095042] [L54] return x != x; VAL [\old(x)=2139095042, \result=0, x=2139095042] [L64] RET, EXPR isnan_float(res) VAL [isnan_float(res)=0, res=2139095042, x=2139095045, y=2139095042] [L64] COND TRUE !isnan_float(res) [L65] __VERIFIER_error() VAL [res=2139095042, x=2139095045, y=2139095042] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 40 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 129 SDtfs, 0 SDslu, 152 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=40occurred 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, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 2582 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-09 09:57:44,436 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 09:57:44,437 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 09:57:44,443 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 09:57:44,443 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 09:57:44,444 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 09:57:44,444 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 09:57:44,445 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 09:57:44,446 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 09:57:44,446 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 09:57:44,447 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 09:57:44,447 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 09:57:44,448 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 09:57:44,448 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 09:57:44,449 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 09:57:44,449 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 09:57:44,449 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 09:57:44,450 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 09:57:44,451 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 09:57:44,452 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 09:57:44,453 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 09:57:44,453 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 09:57:44,454 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 09:57:44,454 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 09:57:44,455 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 09:57:44,455 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 09:57:44,456 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 09:57:44,456 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 09:57:44,456 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 09:57:44,457 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 09:57:44,457 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 09:57:44,457 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 09:57:44,458 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 09:57:44,458 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 09:57:44,458 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 09:57:44,459 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 09:57:44,459 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_94fd1f87-5444-4a24-aadc-2c22a5e1853b/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-12-09 09:57:44,466 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 09:57:44,466 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 09:57:44,466 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 09:57:44,467 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 09:57:44,467 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 09:57:44,467 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 09:57:44,467 INFO L133 SettingsManager]: * Use SBE=true [2018-12-09 09:57:44,467 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 09:57:44,467 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 09:57:44,468 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 09:57:44,468 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 09:57:44,468 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 09:57:44,468 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 09:57:44,468 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 09:57:44,468 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-09 09:57:44,468 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-09 09:57:44,468 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 09:57:44,468 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 09:57:44,469 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 09:57:44,469 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 09:57:44,469 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 09:57:44,469 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 09:57:44,469 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 09:57:44,469 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 09:57:44,469 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 09:57:44,469 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 09:57:44,470 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 09:57:44,470 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 09:57:44,470 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-12-09 09:57:44,470 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 09:57:44,470 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-09 09:57:44,470 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-09 09:57:44,470 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_94fd1f87-5444-4a24-aadc-2c22a5e1853b/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 -> 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 [2018-12-09 09:57:44,488 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 09:57:44,496 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 09:57:44,499 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 09:57:44,499 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 09:57:44,500 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 09:57:44,500 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_94fd1f87-5444-4a24-aadc-2c22a5e1853b/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1250_true-unreach-call.c [2018-12-09 09:57:44,537 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_94fd1f87-5444-4a24-aadc-2c22a5e1853b/bin-2019/uautomizer/data/46275e2ae/897897b9ce894eb7af570608b8bf34d8/FLAG4cb66ee10 [2018-12-09 09:57:44,850 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 09:57:44,850 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_94fd1f87-5444-4a24-aadc-2c22a5e1853b/sv-benchmarks/c/float-newlib/float_req_bl_1250_true-unreach-call.c [2018-12-09 09:57:44,854 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_94fd1f87-5444-4a24-aadc-2c22a5e1853b/bin-2019/uautomizer/data/46275e2ae/897897b9ce894eb7af570608b8bf34d8/FLAG4cb66ee10 [2018-12-09 09:57:45,292 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_94fd1f87-5444-4a24-aadc-2c22a5e1853b/bin-2019/uautomizer/data/46275e2ae/897897b9ce894eb7af570608b8bf34d8 [2018-12-09 09:57:45,294 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 09:57:45,295 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 09:57:45,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 09:57:45,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 09:57:45,298 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 09:57:45,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:57:45" (1/1) ... [2018-12-09 09:57:45,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45734aa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:57:45, skipping insertion in model container [2018-12-09 09:57:45,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:57:45" (1/1) ... [2018-12-09 09:57:45,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 09:57:45,318 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 09:57:45,413 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 09:57:45,416 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 09:57:45,431 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 09:57:45,445 INFO L195 MainTranslator]: Completed translation [2018-12-09 09:57:45,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:57:45 WrapperNode [2018-12-09 09:57:45,445 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 09:57:45,446 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 09:57:45,446 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 09:57:45,446 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 09:57:45,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:57:45" (1/1) ... [2018-12-09 09:57:45,456 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:57:45" (1/1) ... [2018-12-09 09:57:45,461 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 09:57:45,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 09:57:45,461 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 09:57:45,461 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 09:57:45,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:57:45" (1/1) ... [2018-12-09 09:57:45,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:57:45" (1/1) ... [2018-12-09 09:57:45,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:57:45" (1/1) ... [2018-12-09 09:57:45,469 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:57:45" (1/1) ... [2018-12-09 09:57:45,474 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:57:45" (1/1) ... [2018-12-09 09:57:45,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:57:45" (1/1) ... [2018-12-09 09:57:45,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:57:45" (1/1) ... [2018-12-09 09:57:45,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 09:57:45,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 09:57:45,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 09:57:45,480 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 09:57:45,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:57:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94fd1f87-5444-4a24-aadc-2c22a5e1853b/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 [2018-12-09 09:57:45,540 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-12-09 09:57:45,540 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-12-09 09:57:45,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 09:57:45,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 09:57:45,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 09:57:45,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-09 09:57:45,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 09:57:45,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 09:57:45,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-12-09 09:57:45,541 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 09:57:45,541 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 09:57:45,541 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-12-09 09:57:45,541 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-12-09 09:57:45,541 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-12-09 09:57:45,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-12-09 09:57:45,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 09:57:45,667 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:57:45,685 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 09:57:45,685 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-09 09:57:45,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:57:45 BoogieIcfgContainer [2018-12-09 09:57:45,685 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 09:57:45,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 09:57:45,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 09:57:45,687 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 09:57:45,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 09:57:45" (1/3) ... [2018-12-09 09:57:45,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a1ecadf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:57:45, skipping insertion in model container [2018-12-09 09:57:45,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:57:45" (2/3) ... [2018-12-09 09:57:45,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a1ecadf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:57:45, skipping insertion in model container [2018-12-09 09:57:45,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:57:45" (3/3) ... [2018-12-09 09:57:45,689 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250_true-unreach-call.c [2018-12-09 09:57:45,695 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 09:57:45,698 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 09:57:45,707 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 09:57:45,725 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 09:57:45,725 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 09:57:45,725 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 09:57:45,725 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 09:57:45,726 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 09:57:45,726 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 09:57:45,726 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 09:57:45,726 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 09:57:45,726 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 09:57:45,735 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-12-09 09:57:45,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-09 09:57:45,739 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:57:45,739 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] [2018-12-09 09:57:45,741 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:57:45,744 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:57:45,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1373398522, now seen corresponding path program 1 times [2018-12-09 09:57:45,746 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 09:57:45,747 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94fd1f87-5444-4a24-aadc-2c22a5e1853b/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 [2018-12-09 09:57:45,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:57:45,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:57:45,802 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:57:45,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:57:45,815 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 09:57:45,823 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:57:45,823 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 09:57:45,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 09:57:45,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 09:57:45,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 09:57:45,834 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2018-12-09 09:57:45,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:57:45,848 INFO L93 Difference]: Finished difference Result 65 states and 86 transitions. [2018-12-09 09:57:45,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 09:57:45,849 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2018-12-09 09:57:45,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:57:45,855 INFO L225 Difference]: With dead ends: 65 [2018-12-09 09:57:45,855 INFO L226 Difference]: Without dead ends: 33 [2018-12-09 09:57:45,857 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 09:57:45,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-12-09 09:57:45,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-12-09 09:57:45,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-09 09:57:45,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2018-12-09 09:57:45,880 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 24 [2018-12-09 09:57:45,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:57:45,881 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2018-12-09 09:57:45,881 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 09:57:45,881 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2018-12-09 09:57:45,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-09 09:57:45,882 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:57:45,882 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] [2018-12-09 09:57:45,882 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:57:45,882 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:57:45,882 INFO L82 PathProgramCache]: Analyzing trace with hash 570225154, now seen corresponding path program 1 times [2018-12-09 09:57:45,883 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 09:57:45,883 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94fd1f87-5444-4a24-aadc-2c22a5e1853b/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 [2018-12-09 09:57:45,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:57:45,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:57:45,917 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:57:45,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:57:45,933 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 09:57:45,940 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:57:45,940 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 09:57:45,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 09:57:45,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 09:57:45,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 09:57:45,941 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand 4 states. [2018-12-09 09:57:45,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:57:45,959 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2018-12-09 09:57:45,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 09:57:45,960 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-12-09 09:57:45,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:57:45,961 INFO L225 Difference]: With dead ends: 46 [2018-12-09 09:57:45,961 INFO L226 Difference]: Without dead ends: 36 [2018-12-09 09:57:45,962 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 09:57:45,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-09 09:57:45,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-12-09 09:57:45,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 09:57:45,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-12-09 09:57:45,967 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 25 [2018-12-09 09:57:45,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:57:45,968 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-12-09 09:57:45,968 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 09:57:45,968 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-12-09 09:57:45,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-09 09:57:45,968 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:57:45,968 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 09:57:45,969 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:57:45,969 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:57:45,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1732831305, now seen corresponding path program 1 times [2018-12-09 09:57:45,969 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 09:57:45,969 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94fd1f87-5444-4a24-aadc-2c22a5e1853b/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 [2018-12-09 09:57:45,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:57:46,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:57:46,003 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:57:46,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:57:46,024 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 09:57:46,035 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:57:46,035 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 09:57:46,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 09:57:46,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 09:57:46,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 09:57:46,036 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-12-09 09:57:46,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:57:46,058 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-12-09 09:57:46,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 09:57:46,058 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-12-09 09:57:46,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:57:46,059 INFO L225 Difference]: With dead ends: 49 [2018-12-09 09:57:46,059 INFO L226 Difference]: Without dead ends: 39 [2018-12-09 09:57:46,059 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 09:57:46,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-09 09:57:46,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-12-09 09:57:46,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 09:57:46,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-12-09 09:57:46,063 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 26 [2018-12-09 09:57:46,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:57:46,064 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-12-09 09:57:46,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 09:57:46,064 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-12-09 09:57:46,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-09 09:57:46,064 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:57:46,064 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 09:57:46,065 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:57:46,065 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:57:46,065 INFO L82 PathProgramCache]: Analyzing trace with hash -2054695706, now seen corresponding path program 1 times [2018-12-09 09:57:46,065 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 09:57:46,065 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94fd1f87-5444-4a24-aadc-2c22a5e1853b/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 [2018-12-09 09:57:46,068 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:57:46,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:57:46,096 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:57:46,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:57:46,106 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 09:57:46,113 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:57:46,113 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 09:57:46,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 09:57:46,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 09:57:46,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 09:57:46,114 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-12-09 09:57:46,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:57:46,130 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-12-09 09:57:46,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 09:57:46,131 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-12-09 09:57:46,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:57:46,131 INFO L225 Difference]: With dead ends: 49 [2018-12-09 09:57:46,131 INFO L226 Difference]: Without dead ends: 39 [2018-12-09 09:57:46,131 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 09:57:46,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-09 09:57:46,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-12-09 09:57:46,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 09:57:46,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-12-09 09:57:46,135 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 27 [2018-12-09 09:57:46,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:57:46,135 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-12-09 09:57:46,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 09:57:46,135 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-12-09 09:57:46,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-12-09 09:57:46,135 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:57:46,136 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, 1, 1] [2018-12-09 09:57:46,136 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:57:46,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:57:46,136 INFO L82 PathProgramCache]: Analyzing trace with hash -382560787, now seen corresponding path program 1 times [2018-12-09 09:57:46,136 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 09:57:46,136 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94fd1f87-5444-4a24-aadc-2c22a5e1853b/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 [2018-12-09 09:57:46,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:57:46,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:57:46,166 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:57:46,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:57:46,175 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 09:57:46,182 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:57:46,182 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 09:57:46,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 09:57:46,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 09:57:46,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 09:57:46,183 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-12-09 09:57:46,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:57:46,197 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-12-09 09:57:46,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 09:57:46,198 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-12-09 09:57:46,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:57:46,199 INFO L225 Difference]: With dead ends: 49 [2018-12-09 09:57:46,199 INFO L226 Difference]: Without dead ends: 39 [2018-12-09 09:57:46,199 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 09:57:46,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-09 09:57:46,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-12-09 09:57:46,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 09:57:46,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-12-09 09:57:46,202 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 28 [2018-12-09 09:57:46,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:57:46,202 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-12-09 09:57:46,202 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 09:57:46,203 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-12-09 09:57:46,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-12-09 09:57:46,203 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:57:46,203 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, 1, 1] [2018-12-09 09:57:46,203 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:57:46,203 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:57:46,204 INFO L82 PathProgramCache]: Analyzing trace with hash -675963794, now seen corresponding path program 1 times [2018-12-09 09:57:46,204 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 09:57:46,204 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94fd1f87-5444-4a24-aadc-2c22a5e1853b/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 [2018-12-09 09:57:46,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:57:46,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:57:46,233 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:57:46,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:57:46,325 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 09:57:46,332 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:57:46,332 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-12-09 09:57:46,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-09 09:57:46,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-09 09:57:46,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-12-09 09:57:46,333 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 9 states. [2018-12-09 09:57:46,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:57:46,501 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2018-12-09 09:57:46,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-09 09:57:46,501 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-12-09 09:57:46,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:57:46,502 INFO L225 Difference]: With dead ends: 43 [2018-12-09 09:57:46,502 INFO L226 Difference]: Without dead ends: 36 [2018-12-09 09:57:46,502 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-12-09 09:57:46,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-09 09:57:46,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2018-12-09 09:57:46,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-09 09:57:46,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2018-12-09 09:57:46,507 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 28 [2018-12-09 09:57:46,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:57:46,507 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2018-12-09 09:57:46,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-09 09:57:46,507 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2018-12-09 09:57:46,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-12-09 09:57:46,508 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:57:46,508 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] [2018-12-09 09:57:46,509 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:57:46,509 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:57:46,509 INFO L82 PathProgramCache]: Analyzing trace with hash 61144778, now seen corresponding path program 1 times [2018-12-09 09:57:46,509 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 09:57:46,509 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94fd1f87-5444-4a24-aadc-2c22a5e1853b/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 [2018-12-09 09:57:46,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:57:46,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:57:46,548 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:57:46,563 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-09 09:57:46,563 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 09:57:46,574 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:57:46,574 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 09:57:46,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 09:57:46,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 09:57:46,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 09:57:46,575 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 4 states. [2018-12-09 09:57:46,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:57:46,588 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2018-12-09 09:57:46,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 09:57:46,589 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2018-12-09 09:57:46,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:57:46,589 INFO L225 Difference]: With dead ends: 46 [2018-12-09 09:57:46,589 INFO L226 Difference]: Without dead ends: 36 [2018-12-09 09:57:46,590 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 09:57:46,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-09 09:57:46,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-12-09 09:57:46,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 09:57:46,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-12-09 09:57:46,593 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 33 [2018-12-09 09:57:46,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:57:46,594 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-12-09 09:57:46,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 09:57:46,594 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-12-09 09:57:46,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-12-09 09:57:46,594 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:57:46,594 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, 1, 1, 1] [2018-12-09 09:57:46,594 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:57:46,595 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:57:46,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1308604645, now seen corresponding path program 1 times [2018-12-09 09:57:46,595 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 09:57:46,595 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94fd1f87-5444-4a24-aadc-2c22a5e1853b/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 [2018-12-09 09:57:46,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:57:46,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:57:46,632 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:57:46,642 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-09 09:57:46,642 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 09:57:46,649 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:57:46,649 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 09:57:46,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 09:57:46,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 09:57:46,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 09:57:46,650 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2018-12-09 09:57:46,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:57:46,662 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2018-12-09 09:57:46,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 09:57:46,663 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-12-09 09:57:46,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:57:46,663 INFO L225 Difference]: With dead ends: 49 [2018-12-09 09:57:46,663 INFO L226 Difference]: Without dead ends: 39 [2018-12-09 09:57:46,664 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 09:57:46,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-09 09:57:46,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-12-09 09:57:46,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 09:57:46,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-12-09 09:57:46,666 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 34 [2018-12-09 09:57:46,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:57:46,667 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-12-09 09:57:46,667 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 09:57:46,667 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-12-09 09:57:46,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-09 09:57:46,667 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:57:46,667 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] [2018-12-09 09:57:46,668 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:57:46,668 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:57:46,668 INFO L82 PathProgramCache]: Analyzing trace with hash 922408263, now seen corresponding path program 1 times [2018-12-09 09:57:46,668 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 09:57:46,668 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94fd1f87-5444-4a24-aadc-2c22a5e1853b/bin-2019/uautomizer/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-12-09 09:57:46,671 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:57:46,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:57:46,709 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:57:46,800 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-09 09:57:46,800 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 09:57:46,811 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:57:46,811 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-12-09 09:57:46,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-09 09:57:46,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-09 09:57:46,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-12-09 09:57:46,812 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 10 states. [2018-12-09 09:57:46,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:57:46,994 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2018-12-09 09:57:46,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-09 09:57:46,995 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2018-12-09 09:57:46,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:57:46,996 INFO L225 Difference]: With dead ends: 44 [2018-12-09 09:57:46,996 INFO L226 Difference]: Without dead ends: 36 [2018-12-09 09:57:46,996 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2018-12-09 09:57:46,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-09 09:57:46,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-12-09 09:57:46,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 09:57:46,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2018-12-09 09:57:46,999 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 35 [2018-12-09 09:57:46,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:57:46,999 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2018-12-09 09:57:46,999 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-09 09:57:46,999 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2018-12-09 09:57:46,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-09 09:57:46,999 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:57:47,000 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] [2018-12-09 09:57:47,000 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:57:47,000 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:57:47,000 INFO L82 PathProgramCache]: Analyzing trace with hash 221343685, now seen corresponding path program 1 times [2018-12-09 09:57:47,000 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 09:57:47,000 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94fd1f87-5444-4a24-aadc-2c22a5e1853b/bin-2019/uautomizer/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-12-09 09:57:47,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:57:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:57:47,038 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:57:47,099 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-09 09:57:47,099 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 09:57:47,105 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:57:47,106 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 09:57:47,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 09:57:47,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 09:57:47,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 09:57:47,106 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 5 states. [2018-12-09 09:57:47,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:57:47,178 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2018-12-09 09:57:47,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 09:57:47,179 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2018-12-09 09:57:47,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:57:47,180 INFO L225 Difference]: With dead ends: 46 [2018-12-09 09:57:47,180 INFO L226 Difference]: Without dead ends: 33 [2018-12-09 09:57:47,180 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-09 09:57:47,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-12-09 09:57:47,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-12-09 09:57:47,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-09 09:57:47,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-12-09 09:57:47,183 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 35 [2018-12-09 09:57:47,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:57:47,183 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-12-09 09:57:47,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 09:57:47,184 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-12-09 09:57:47,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-09 09:57:47,184 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:57:47,184 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, 1, 1, 1, 1] [2018-12-09 09:57:47,184 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:57:47,185 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:57:47,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1994775826, now seen corresponding path program 1 times [2018-12-09 09:57:47,185 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 09:57:47,185 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94fd1f87-5444-4a24-aadc-2c22a5e1853b/bin-2019/uautomizer/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-12-09 09:57:47,188 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:57:47,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:57:47,219 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:57:47,226 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-09 09:57:47,226 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 09:57:47,233 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:57:47,233 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 09:57:47,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 09:57:47,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 09:57:47,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 09:57:47,233 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2018-12-09 09:57:47,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:57:47,240 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2018-12-09 09:57:47,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 09:57:47,241 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-12-09 09:57:47,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:57:47,241 INFO L225 Difference]: With dead ends: 46 [2018-12-09 09:57:47,241 INFO L226 Difference]: Without dead ends: 35 [2018-12-09 09:57:47,241 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 09:57:47,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-09 09:57:47,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-12-09 09:57:47,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-09 09:57:47,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-12-09 09:57:47,243 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 35 [2018-12-09 09:57:47,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:57:47,244 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-12-09 09:57:47,244 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 09:57:47,244 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-12-09 09:57:47,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-09 09:57:47,244 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:57:47,244 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, 1, 1, 1, 1, 1] [2018-12-09 09:57:47,244 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:57:47,245 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:57:47,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1330109311, now seen corresponding path program 1 times [2018-12-09 09:57:47,245 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 09:57:47,245 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94fd1f87-5444-4a24-aadc-2c22a5e1853b/bin-2019/uautomizer/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2018-12-09 09:57:47,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:57:47,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:57:47,279 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:57:47,287 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-09 09:57:47,287 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 09:57:47,293 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:57:47,294 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 09:57:47,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 09:57:47,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 09:57:47,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 09:57:47,294 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2018-12-09 09:57:47,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:57:47,302 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2018-12-09 09:57:47,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 09:57:47,303 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-12-09 09:57:47,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:57:47,303 INFO L225 Difference]: With dead ends: 46 [2018-12-09 09:57:47,303 INFO L226 Difference]: Without dead ends: 35 [2018-12-09 09:57:47,304 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 09:57:47,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-09 09:57:47,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-12-09 09:57:47,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-09 09:57:47,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-12-09 09:57:47,306 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 36 [2018-12-09 09:57:47,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:57:47,307 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-12-09 09:57:47,307 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 09:57:47,307 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-12-09 09:57:47,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-09 09:57:47,307 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:57:47,307 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, 1, 1, 1, 1, 1] [2018-12-09 09:57:47,308 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:57:47,308 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:57:47,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1036706304, now seen corresponding path program 1 times [2018-12-09 09:57:47,308 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 09:57:47,308 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94fd1f87-5444-4a24-aadc-2c22a5e1853b/bin-2019/uautomizer/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2018-12-09 09:57:47,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:57:47,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:57:47,344 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:57:47,424 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-09 09:57:47,425 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 09:57:47,431 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:57:47,431 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-12-09 09:57:47,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-09 09:57:47,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-09 09:57:47,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-12-09 09:57:47,432 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 9 states. [2018-12-09 09:57:47,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:57:47,570 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-12-09 09:57:47,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-09 09:57:47,570 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2018-12-09 09:57:47,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:57:47,571 INFO L225 Difference]: With dead ends: 33 [2018-12-09 09:57:47,571 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 09:57:47,571 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-12-09 09:57:47,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 09:57:47,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 09:57:47,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 09:57:47,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 09:57:47,572 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2018-12-09 09:57:47,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:57:47,572 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 09:57:47,572 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-09 09:57:47,572 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 09:57:47,572 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 09:57:47,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-09 09:57:47,674 INFO L448 ceAbstractionStarter]: For program point isnan_floatFINAL(line 54) no Hoare annotation was computed. [2018-12-09 09:57:47,675 INFO L451 ceAbstractionStarter]: At program point isnan_floatENTRY(line 54) the Hoare annotation is: true [2018-12-09 09:57:47,675 INFO L448 ceAbstractionStarter]: For program point isnan_floatEXIT(line 54) no Hoare annotation was computed. [2018-12-09 09:57:47,675 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-09 09:57:47,675 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-12-09 09:57:47,675 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-09 09:57:47,675 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-09 09:57:47,675 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-09 09:57:47,675 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-09 09:57:47,675 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-09 09:57:47,675 INFO L448 ceAbstractionStarter]: For program point L65(line 65) no Hoare annotation was computed. [2018-12-09 09:57:47,675 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 65) no Hoare annotation was computed. [2018-12-09 09:57:47,675 INFO L444 ceAbstractionStarter]: At program point L64(line 64) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (and (= main_~res~0 .cse0) (= main_~y~0 .cse0))) [2018-12-09 09:57:47,676 INFO L448 ceAbstractionStarter]: For program point L64-1(lines 64 67) no Hoare annotation was computed. [2018-12-09 09:57:47,676 INFO L444 ceAbstractionStarter]: At program point L62(line 62) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (and (= main_~y~0 .cse0) (= main_~x~0 .cse0))) [2018-12-09 09:57:47,676 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 56 70) the Hoare annotation is: true [2018-12-09 09:57:47,676 INFO L448 ceAbstractionStarter]: For program point L62-1(line 62) no Hoare annotation was computed. [2018-12-09 09:57:47,676 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 56 70) no Hoare annotation was computed. [2018-12-09 09:57:47,676 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 56 70) no Hoare annotation was computed. [2018-12-09 09:57:47,676 INFO L448 ceAbstractionStarter]: For program point fmax_floatEXIT(lines 42 51) no Hoare annotation was computed. [2018-12-09 09:57:47,676 INFO L451 ceAbstractionStarter]: At program point fmax_floatENTRY(lines 42 51) the Hoare annotation is: true [2018-12-09 09:57:47,676 INFO L448 ceAbstractionStarter]: For program point L50(line 50) no Hoare annotation was computed. [2018-12-09 09:57:47,676 INFO L448 ceAbstractionStarter]: For program point L50-2(line 50) no Hoare annotation was computed. [2018-12-09 09:57:47,676 INFO L444 ceAbstractionStarter]: At program point L47(line 47) the Hoare annotation is: (and (= |fmax_float_#in~y| fmax_float_~y) (= |fmax_float_#in~x| fmax_float_~x)) [2018-12-09 09:57:47,676 INFO L448 ceAbstractionStarter]: For program point L47-1(lines 47 49) no Hoare annotation was computed. [2018-12-09 09:57:47,677 INFO L444 ceAbstractionStarter]: At program point L43(line 43) the Hoare annotation is: (and (= |fmax_float_#in~y| fmax_float_~y) (= |fmax_float_#in~x| fmax_float_~x)) [2018-12-09 09:57:47,677 INFO L448 ceAbstractionStarter]: For program point L43-1(lines 43 45) no Hoare annotation was computed. [2018-12-09 09:57:47,677 INFO L448 ceAbstractionStarter]: For program point fmax_floatFINAL(lines 42 51) no Hoare annotation was computed. [2018-12-09 09:57:47,677 INFO L448 ceAbstractionStarter]: For program point L33(lines 33 39) no Hoare annotation was computed. [2018-12-09 09:57:47,677 INFO L448 ceAbstractionStarter]: For program point __fpclassify_floatFINAL(lines 19 40) no Hoare annotation was computed. [2018-12-09 09:57:47,677 INFO L448 ceAbstractionStarter]: For program point L36(lines 36 39) no Hoare annotation was computed. [2018-12-09 09:57:47,677 INFO L448 ceAbstractionStarter]: For program point L30(lines 30 39) no Hoare annotation was computed. [2018-12-09 09:57:47,677 INFO L448 ceAbstractionStarter]: For program point L22-1(lines 22 26) no Hoare annotation was computed. [2018-12-09 09:57:47,677 INFO L451 ceAbstractionStarter]: At program point L22-2(lines 22 26) the Hoare annotation is: true [2018-12-09 09:57:47,677 INFO L448 ceAbstractionStarter]: For program point L22-3(lines 19 40) no Hoare annotation was computed. [2018-12-09 09:57:47,677 INFO L451 ceAbstractionStarter]: At program point __fpclassify_floatENTRY(lines 19 40) the Hoare annotation is: true [2018-12-09 09:57:47,677 INFO L448 ceAbstractionStarter]: For program point __fpclassify_floatEXIT(lines 19 40) no Hoare annotation was computed. [2018-12-09 09:57:47,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 09:57:47 BoogieIcfgContainer [2018-12-09 09:57:47,681 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 09:57:47,681 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 09:57:47,681 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 09:57:47,681 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 09:57:47,681 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:57:45" (3/4) ... [2018-12-09 09:57:47,683 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 09:57:47,687 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_float [2018-12-09 09:57:47,687 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 09:57:47,687 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 09:57:47,688 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fmax_float [2018-12-09 09:57:47,688 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_float [2018-12-09 09:57:47,690 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2018-12-09 09:57:47,690 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-12-09 09:57:47,690 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 09:57:47,717 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_94fd1f87-5444-4a24-aadc-2c22a5e1853b/bin-2019/uautomizer/witness.graphml [2018-12-09 09:57:47,718 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 09:57:47,718 INFO L168 Benchmark]: Toolchain (without parser) took 2423.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 201.3 MB). Free memory was 942.0 MB in the beginning and 1.2 GB in the end (delta: -240.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 09:57:47,719 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 09:57:47,719 INFO L168 Benchmark]: CACSL2BoogieTranslator took 149.72 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 931.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 09:57:47,719 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.28 ms. Allocated memory is still 1.0 GB. Free memory was 931.3 MB in the beginning and 925.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-09 09:57:47,720 INFO L168 Benchmark]: Boogie Preprocessor took 18.50 ms. Allocated memory is still 1.0 GB. Free memory is still 925.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 09:57:47,720 INFO L168 Benchmark]: RCFGBuilder took 205.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 925.9 MB in the beginning and 1.1 GB in the end (delta: -171.5 MB). Peak memory consumption was 14.0 MB. Max. memory is 11.5 GB. [2018-12-09 09:57:47,720 INFO L168 Benchmark]: TraceAbstraction took 1995.04 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 68.2 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -85.4 MB). Peak memory consumption was 295.5 MB. Max. memory is 11.5 GB. [2018-12-09 09:57:47,721 INFO L168 Benchmark]: Witness Printer took 36.90 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 09:57:47,722 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 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 149.72 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 931.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.28 ms. Allocated memory is still 1.0 GB. Free memory was 931.3 MB in the beginning and 925.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.50 ms. Allocated memory is still 1.0 GB. Free memory is still 925.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 205.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 925.9 MB in the beginning and 1.1 GB in the end (delta: -171.5 MB). Peak memory consumption was 14.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1995.04 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 68.2 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -85.4 MB). Peak memory consumption was 295.5 MB. Max. memory is 11.5 GB. * Witness Printer took 36.90 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 65]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 37 locations, 1 error locations. SAFE Result, 1.9s OverallTime, 13 OverallIterations, 2 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 498 SDtfs, 31 SDslu, 1315 SDs, 0 SdLazy, 221 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 403 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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, 13 MinimizatonAttempts, 19 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 28 PreInvPairs, 33 NumberOfFragments, 48 HoareAnnotationTreeSize, 28 FomulaSimplifications, 20 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 402 NumberOfCodeBlocks, 402 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 389 ConstructedInterpolants, 3 QuantifiedInterpolants, 21567 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1091 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 42/42 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...