./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/inv_square_true-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_474c0ed3-56a9-446a-87eb-ba4f19156531/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_474c0ed3-56a9-446a-87eb-ba4f19156531/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_474c0ed3-56a9-446a-87eb-ba4f19156531/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_474c0ed3-56a9-446a-87eb-ba4f19156531/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_square_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_474c0ed3-56a9-446a-87eb-ba4f19156531/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_474c0ed3-56a9-446a-87eb-ba4f19156531/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 9b5f8c7f8f0f24b8f3c006680a1188ad2ebf7298 ................................................................................................................................................................................................................................................................................................................................................................................................................................ 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_474c0ed3-56a9-446a-87eb-ba4f19156531/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_474c0ed3-56a9-446a-87eb-ba4f19156531/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_474c0ed3-56a9-446a-87eb-ba4f19156531/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_474c0ed3-56a9-446a-87eb-ba4f19156531/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_square_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_474c0ed3-56a9-446a-87eb-ba4f19156531/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_474c0ed3-56a9-446a-87eb-ba4f19156531/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 9b5f8c7f8f0f24b8f3c006680a1188ad2ebf7298 ................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 04:12:56,968 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 04:12:56,970 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 04:12:56,976 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 04:12:56,977 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 04:12:56,977 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 04:12:56,978 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 04:12:56,980 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 04:12:56,981 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 04:12:56,981 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 04:12:56,982 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 04:12:56,982 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 04:12:56,983 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 04:12:56,984 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 04:12:56,985 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 04:12:56,985 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 04:12:56,986 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 04:12:56,987 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 04:12:56,989 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 04:12:56,990 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 04:12:56,991 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 04:12:56,992 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 04:12:56,993 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 04:12:56,993 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 04:12:56,994 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 04:12:56,994 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 04:12:56,995 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 04:12:56,996 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 04:12:56,996 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 04:12:56,997 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 04:12:56,997 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 04:12:56,998 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 04:12:56,998 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 04:12:56,998 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 04:12:56,998 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 04:12:56,999 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 04:12:56,999 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_474c0ed3-56a9-446a-87eb-ba4f19156531/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-23 04:12:57,010 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 04:12:57,010 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 04:12:57,010 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 04:12:57,011 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 04:12:57,011 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 04:12:57,011 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 04:12:57,011 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 04:12:57,012 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 04:12:57,012 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 04:12:57,012 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 04:12:57,012 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 04:12:57,012 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 04:12:57,012 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 04:12:57,013 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 04:12:57,013 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 04:12:57,013 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 04:12:57,013 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 04:12:57,013 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 04:12:57,013 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 04:12:57,014 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 04:12:57,014 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 04:12:57,014 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 04:12:57,014 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 04:12:57,014 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 04:12:57,014 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 04:12:57,015 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 04:12:57,015 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 04:12:57,015 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 04:12:57,015 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 04:12:57,015 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 04:12:57,015 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_474c0ed3-56a9-446a-87eb-ba4f19156531/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 -> 9b5f8c7f8f0f24b8f3c006680a1188ad2ebf7298 [2018-11-23 04:12:57,040 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 04:12:57,050 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 04:12:57,052 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 04:12:57,053 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 04:12:57,054 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 04:12:57,054 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_474c0ed3-56a9-446a-87eb-ba4f19156531/bin-2019/uautomizer/../../sv-benchmarks/c/float-benchs/inv_square_true-unreach-call_true-termination.c [2018-11-23 04:12:57,096 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_474c0ed3-56a9-446a-87eb-ba4f19156531/bin-2019/uautomizer/data/451ec0c5e/2f10ae2da31c43b3ac13ea0a44857678/FLAGd66b9a691 [2018-11-23 04:12:57,416 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 04:12:57,417 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_474c0ed3-56a9-446a-87eb-ba4f19156531/sv-benchmarks/c/float-benchs/inv_square_true-unreach-call_true-termination.c [2018-11-23 04:12:57,421 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_474c0ed3-56a9-446a-87eb-ba4f19156531/bin-2019/uautomizer/data/451ec0c5e/2f10ae2da31c43b3ac13ea0a44857678/FLAGd66b9a691 [2018-11-23 04:12:57,862 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_474c0ed3-56a9-446a-87eb-ba4f19156531/bin-2019/uautomizer/data/451ec0c5e/2f10ae2da31c43b3ac13ea0a44857678 [2018-11-23 04:12:57,865 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 04:12:57,866 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 04:12:57,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 04:12:57,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 04:12:57,870 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 04:12:57,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:12:57" (1/1) ... [2018-11-23 04:12:57,873 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2739c090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:57, skipping insertion in model container [2018-11-23 04:12:57,873 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:12:57" (1/1) ... [2018-11-23 04:12:57,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 04:12:57,894 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 04:12:58,014 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 04:12:58,016 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 04:12:58,026 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 04:12:58,035 INFO L195 MainTranslator]: Completed translation [2018-11-23 04:12:58,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:58 WrapperNode [2018-11-23 04:12:58,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 04:12:58,036 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 04:12:58,036 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 04:12:58,036 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 04:12:58,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:58" (1/1) ... [2018-11-23 04:12:58,046 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:58" (1/1) ... [2018-11-23 04:12:58,051 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 04:12:58,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 04:12:58,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 04:12:58,051 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 04:12:58,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:58" (1/1) ... [2018-11-23 04:12:58,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:58" (1/1) ... [2018-11-23 04:12:58,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:58" (1/1) ... [2018-11-23 04:12:58,058 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:58" (1/1) ... [2018-11-23 04:12:58,062 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:58" (1/1) ... [2018-11-23 04:12:58,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:58" (1/1) ... [2018-11-23 04:12:58,064 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:58" (1/1) ... [2018-11-23 04:12:58,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 04:12:58,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 04:12:58,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 04:12:58,065 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 04:12:58,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_474c0ed3-56a9-446a-87eb-ba4f19156531/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 04:12:58,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 04:12:58,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 04:12:58,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 04:12:58,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 04:12:58,151 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 04:12:58,151 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 04:12:58,152 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-23 04:12:58,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-23 04:12:58,269 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 04:12:58,269 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-23 04:12:58,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:12:58 BoogieIcfgContainer [2018-11-23 04:12:58,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 04:12:58,271 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 04:12:58,271 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 04:12:58,274 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 04:12:58,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:12:57" (1/3) ... [2018-11-23 04:12:58,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@275d05b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:12:58, skipping insertion in model container [2018-11-23 04:12:58,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:58" (2/3) ... [2018-11-23 04:12:58,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@275d05b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:12:58, skipping insertion in model container [2018-11-23 04:12:58,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:12:58" (3/3) ... [2018-11-23 04:12:58,278 INFO L112 eAbstractionObserver]: Analyzing ICFG inv_square_true-unreach-call_true-termination.c [2018-11-23 04:12:58,288 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 04:12:58,294 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 04:12:58,306 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 04:12:58,336 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 04:12:58,336 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 04:12:58,336 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 04:12:58,337 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 04:12:58,337 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 04:12:58,337 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 04:12:58,337 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 04:12:58,337 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 04:12:58,337 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 04:12:58,353 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-11-23 04:12:58,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-23 04:12:58,359 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:12:58,360 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:12:58,362 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:12:58,367 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:12:58,367 INFO L82 PathProgramCache]: Analyzing trace with hash 697060158, now seen corresponding path program 1 times [2018-11-23 04:12:58,369 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 04:12:58,369 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 04:12:58,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:12:58,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:12:58,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:12:58,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 04:12:58,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 04:12:58,464 INFO L469 BasicCegarLoop]: Counterexample might be feasible ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator [?] CALL call ULTIMATE.init(); [?] assume true; [?] RET #27#return; [?] CALL call #t~ret1 := main(); [?] havoc ~x~0;havoc ~y~0;havoc ~z~0;~x~0 := #t~nondet0;havoc #t~nondet0;assume 0 != (if ~someBinaryFLOATComparisonOperation(~x~0, ~someUnaryFLOAToperation(1.0)) && ~someBinaryFLOATComparisonOperation(~x~0, 1.0) then 1 else 0); VAL [main_~x~0=2.0] [?] assume ~someBinaryFLOATComparisonOperation(~x~0, ~someUnaryFLOAToperation(1.0E-20)) || ~someBinaryFLOATComparisonOperation(~x~0, 1.0E-20);~y~0 := ~someBinaryArithmeticFLOAToperation(~x~0, ~x~0); VAL [main_~x~0=2.0] [?] CALL call __VERIFIER_assert((if ~someBinaryFLOATComparisonOperation(~y~0, 0.0) then 1 else 0)); VAL [|__VERIFIER_assert_#in~cond|=0] [?] ~cond := #in~cond; VAL [__VERIFIER_assert_~cond=0, |__VERIFIER_assert_#in~cond|=0] [?] assume 0 == ~cond; VAL [__VERIFIER_assert_~cond=0, |__VERIFIER_assert_#in~cond|=0] [?] assume !false; VAL [__VERIFIER_assert_~cond=0, |__VERIFIER_assert_#in~cond|=0] [?] CALL call ULTIMATE.init(); [?] ensures true; [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L12] havoc ~x~0; [L12] havoc ~y~0; [L12] havoc ~z~0; [L14] ~x~0 := #t~nondet0; [L14] havoc #t~nondet0; [L15] assume 0 != (if ~someBinaryFLOATComparisonOperation(~x~0, ~someUnaryFLOAToperation(1.0)) && ~someBinaryFLOATComparisonOperation(~x~0, 1.0) then 1 else 0); VAL [~x~0=2.0] [L17-L21] assume ~someBinaryFLOATComparisonOperation(~x~0, ~someUnaryFLOAToperation(1.0E-20)) || ~someBinaryFLOATComparisonOperation(~x~0, 1.0E-20); [L18] ~y~0 := ~someBinaryArithmeticFLOAToperation(~x~0, ~x~0); VAL [~x~0=2.0] [L19] CALL call __VERIFIER_assert((if ~someBinaryFLOATComparisonOperation(~y~0, 0.0) then 1 else 0)); VAL [#in~cond=0] [L8] ~cond := #in~cond; VAL [#in~cond=0, ~cond=0] [L8] assume 0 == ~cond; VAL [#in~cond=0, ~cond=0] [L8] assert false; VAL [#in~cond=0, ~cond=0] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.preprocessor.BoogiePreprocessorBacktranslator [?] CALL call ULTIMATE.init(); [?] ensures true; [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L12] havoc ~x~0; [L12] havoc ~y~0; [L12] havoc ~z~0; [L14] ~x~0 := #t~nondet0; [L14] havoc #t~nondet0; [L15] assume 0 != (if ~someBinaryFLOATComparisonOperation(~x~0, ~someUnaryFLOAToperation(1.0)) && ~someBinaryFLOATComparisonOperation(~x~0, 1.0) then 1 else 0); VAL [~x~0=2.0] [L17-L21] assume ~someBinaryFLOATComparisonOperation(~x~0, ~someUnaryFLOAToperation(1.0E-20)) || ~someBinaryFLOATComparisonOperation(~x~0, 1.0E-20); [L18] ~y~0 := ~someBinaryArithmeticFLOAToperation(~x~0, ~x~0); VAL [~x~0=2.0] [L19] CALL call __VERIFIER_assert((if ~someBinaryFLOATComparisonOperation(~y~0, 0.0) then 1 else 0)); VAL [#in~cond=0] [L8] ~cond := #in~cond; VAL [#in~cond=0, ~cond=0] [L8] assume 0 == ~cond; VAL [#in~cond=0, ~cond=0] [L8] assert false; VAL [#in~cond=0, ~cond=0] [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L12] havoc ~x~0; [L12] havoc ~y~0; [L12] havoc ~z~0; [L14] ~x~0 := #t~nondet0; [L14] havoc #t~nondet0; [L15] assume 0 != (if ~someBinaryFLOATComparisonOperation(~x~0, ~someUnaryFLOAToperation(1.0)) && ~someBinaryFLOATComparisonOperation(~x~0, 1.0) then 1 else 0); VAL [~x~0=2.0] [L17] COND TRUE ~someBinaryFLOATComparisonOperation(~x~0, ~someUnaryFLOAToperation(1.0E-20)) || ~someBinaryFLOATComparisonOperation(~x~0, 1.0E-20) [L18] ~y~0 := ~someBinaryArithmeticFLOAToperation(~x~0, ~x~0); VAL [~x~0=2.0] [L19] CALL call __VERIFIER_assert((if ~someBinaryFLOATComparisonOperation(~y~0, 0.0) then 1 else 0)); VAL [#in~cond=0] [L8] ~cond := #in~cond; VAL [#in~cond=0, ~cond=0] [L8] COND TRUE 0 == ~cond VAL [#in~cond=0, ~cond=0] [L8] assert false; VAL [#in~cond=0, ~cond=0] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L12] havoc ~x~0; [L12] havoc ~y~0; [L12] havoc ~z~0; [L14] ~x~0 := #t~nondet0; [L14] havoc #t~nondet0; [L15] assume 0 != (if ~someBinaryFLOATComparisonOperation(~x~0, ~someUnaryFLOAToperation(1.0)) && ~someBinaryFLOATComparisonOperation(~x~0, 1.0) then 1 else 0); VAL [~x~0=2.0] [L17] COND TRUE ~someBinaryFLOATComparisonOperation(~x~0, ~someUnaryFLOAToperation(1.0E-20)) || ~someBinaryFLOATComparisonOperation(~x~0, 1.0E-20) [L18] ~y~0 := ~someBinaryArithmeticFLOAToperation(~x~0, ~x~0); VAL [~x~0=2.0] [L19] CALL call __VERIFIER_assert((if ~someBinaryFLOATComparisonOperation(~y~0, 0.0) then 1 else 0)); VAL [#in~cond=0] [L8] ~cond := #in~cond; VAL [#in~cond=0, ~cond=0] [L8] COND TRUE 0 == ~cond VAL [#in~cond=0, ~cond=0] [L8] assert false; VAL [#in~cond=0, ~cond=0] [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L12] havoc ~x~0; [L12] havoc ~y~0; [L12] havoc ~z~0; [L14] ~x~0 := #t~nondet0; [L14] havoc #t~nondet0; [L15] assume 0 != (if ~someBinaryFLOATComparisonOperation(~x~0, ~someUnaryFLOAToperation(1.0)) && ~someBinaryFLOATComparisonOperation(~x~0, 1.0) then 1 else 0); VAL [~x~0=2.0] [L17] COND TRUE ~someBinaryFLOATComparisonOperation(~x~0, ~someUnaryFLOAToperation(1.0E-20)) || ~someBinaryFLOATComparisonOperation(~x~0, 1.0E-20) [L18] ~y~0 := ~someBinaryArithmeticFLOAToperation(~x~0, ~x~0); VAL [~x~0=2.0] [L19] CALL call __VERIFIER_assert((if ~someBinaryFLOATComparisonOperation(~y~0, 0.0) then 1 else 0)); VAL [#in~cond=0] [L8] ~cond := #in~cond; VAL [#in~cond=0, ~cond=0] [L8] COND TRUE 0 == ~cond VAL [#in~cond=0, ~cond=0] [L8] assert false; VAL [#in~cond=0, ~cond=0] ----- ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L12] havoc ~x~0; [L12] havoc ~y~0; [L12] havoc ~z~0; [L14] ~x~0 := #t~nondet0; [L14] havoc #t~nondet0; [L15] assume 0 != (if ~someBinaryFLOATComparisonOperation(~x~0, ~someUnaryFLOAToperation(1.0)) && ~someBinaryFLOATComparisonOperation(~x~0, 1.0) then 1 else 0); VAL [~x~0=2.0] [L17] COND TRUE ~someBinaryFLOATComparisonOperation(~x~0, ~someUnaryFLOAToperation(1.0E-20)) || ~someBinaryFLOATComparisonOperation(~x~0, 1.0E-20) [L18] ~y~0 := ~someBinaryArithmeticFLOAToperation(~x~0, ~x~0); VAL [~x~0=2.0] [L19] CALL call __VERIFIER_assert((if ~someBinaryFLOATComparisonOperation(~y~0, 0.0) then 1 else 0)); VAL [#in~cond=0] [L8] ~cond := #in~cond; VAL [#in~cond=0, ~cond=0] [L8] COND TRUE 0 == ~cond VAL [#in~cond=0, ~cond=0] [L8] assert false; VAL [#in~cond=0, ~cond=0] [L12] float x, y, z; [L14] x = __VERIFIER_nondet_float() [L17] COND TRUE x <= -1e-20f || x >= 1e-20f [L18] y = x * x VAL [x=2] [L19] CALL __VERIFIER_assert(y != 0.f) VAL [\old(cond)=0] [L8] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L8] __VERIFIER_error() VAL [\old(cond)=0, cond=0] ----- [2018-11-23 04:12:58,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 04:12:58 BoogieIcfgContainer [2018-11-23 04:12:58,485 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 04:12:58,486 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 04:12:58,486 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 04:12:58,486 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 04:12:58,486 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:12:58" (3/4) ... [2018-11-23 04:12:58,489 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-23 04:12:58,489 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 04:12:58,490 INFO L168 Benchmark]: Toolchain (without parser) took 624.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 961.1 MB in the beginning and 1.1 GB in the end (delta: -137.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 04:12:58,491 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 982.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 04:12:58,492 INFO L168 Benchmark]: CACSL2BoogieTranslator took 169.56 ms. Allocated memory is still 1.0 GB. Free memory was 961.1 MB in the beginning and 950.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 04:12:58,492 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.61 ms. Allocated memory is still 1.0 GB. Free memory was 950.4 MB in the beginning and 945.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-23 04:12:58,493 INFO L168 Benchmark]: Boogie Preprocessor took 13.49 ms. Allocated memory is still 1.0 GB. Free memory is still 945.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 04:12:58,494 INFO L168 Benchmark]: RCFGBuilder took 205.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 945.0 MB in the beginning and 1.1 GB in the end (delta: -166.6 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-11-23 04:12:58,494 INFO L168 Benchmark]: TraceAbstraction took 214.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2018-11-23 04:12:58,495 INFO L168 Benchmark]: Witness Printer took 3.31 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 04:12:58,499 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 982.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 169.56 ms. Allocated memory is still 1.0 GB. Free memory was 961.1 MB in the beginning and 950.4 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 14.61 ms. Allocated memory is still 1.0 GB. Free memory was 950.4 MB in the beginning and 945.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.49 ms. Allocated memory is still 1.0 GB. Free memory is still 945.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 205.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 945.0 MB in the beginning and 1.1 GB in the end (delta: -166.6 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 214.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * Witness Printer took 3.31 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 8]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 17, overapproximation of someBinaryArithmeticFLOAToperation at line 18. Possible FailurePath: [L12] float x, y, z; [L14] x = __VERIFIER_nondet_float() [L17] COND TRUE x <= -1e-20f || x >= 1e-20f [L18] y = x * x VAL [x=2] [L19] CALL __VERIFIER_assert(y != 0.f) VAL [\old(cond)=0] [L8] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L8] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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-aa41828 [2018-11-23 04:13:00,006 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 04:13:00,007 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 04:13:00,015 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-11-23 04:13:00,021 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 04:13:00,022 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 04:13:00,022 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 04:13:00,023 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 04:13:00,024 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 04:13:00,024 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 04:13:00,026 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 04:13:00,027 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 04:13:00,028 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 04:13:00,029 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 04:13:00,030 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 04:13:00,032 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 04:13:00,032 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 04:13:00,032 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 04:13:00,033 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 04:13:00,034 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 04:13:00,034 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 04:13:00,035 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 04:13:00,036 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 04:13:00,036 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 04:13:00,037 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 04:13:00,037 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 04:13:00,037 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 04:13:00,038 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 04:13:00,038 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 04:13:00,038 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_474c0ed3-56a9-446a-87eb-ba4f19156531/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-23 04:13:00,048 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 04:13:00,049 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 04:13:00,049 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 04:13:00,049 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 04:13:00,050 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 04:13:00,050 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 04:13:00,050 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 04:13:00,050 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 04:13:00,051 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 04:13:00,051 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 04:13:00,051 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 04:13:00,051 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 04:13:00,051 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 04:13:00,051 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 04:13:00,051 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-23 04:13:00,052 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-23 04:13:00,052 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 04:13:00,052 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 04:13:00,052 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 04:13:00,052 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 04:13:00,052 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 04:13:00,053 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 04:13:00,053 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 04:13:00,053 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 04:13:00,053 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 04:13:00,053 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 04:13:00,053 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 04:13:00,053 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 04:13:00,054 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-23 04:13:00,054 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 04:13:00,054 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-23 04:13:00,054 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-23 04:13:00,054 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_474c0ed3-56a9-446a-87eb-ba4f19156531/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 -> 9b5f8c7f8f0f24b8f3c006680a1188ad2ebf7298 [2018-11-23 04:13:00,085 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 04:13:00,094 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 04:13:00,097 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 04:13:00,098 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 04:13:00,098 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 04:13:00,098 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_474c0ed3-56a9-446a-87eb-ba4f19156531/bin-2019/uautomizer/../../sv-benchmarks/c/float-benchs/inv_square_true-unreach-call_true-termination.c [2018-11-23 04:13:00,138 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_474c0ed3-56a9-446a-87eb-ba4f19156531/bin-2019/uautomizer/data/c625ddae2/b507ebc5b2cd41c6876916f2fe4d9d1d/FLAGec2c8204f [2018-11-23 04:13:00,462 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 04:13:00,463 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_474c0ed3-56a9-446a-87eb-ba4f19156531/sv-benchmarks/c/float-benchs/inv_square_true-unreach-call_true-termination.c [2018-11-23 04:13:00,467 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_474c0ed3-56a9-446a-87eb-ba4f19156531/bin-2019/uautomizer/data/c625ddae2/b507ebc5b2cd41c6876916f2fe4d9d1d/FLAGec2c8204f [2018-11-23 04:13:00,896 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_474c0ed3-56a9-446a-87eb-ba4f19156531/bin-2019/uautomizer/data/c625ddae2/b507ebc5b2cd41c6876916f2fe4d9d1d [2018-11-23 04:13:00,898 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 04:13:00,899 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 04:13:00,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 04:13:00,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 04:13:00,902 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 04:13:00,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:13:00" (1/1) ... [2018-11-23 04:13:00,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@655b2880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:13:00, skipping insertion in model container [2018-11-23 04:13:00,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:13:00" (1/1) ... [2018-11-23 04:13:00,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 04:13:00,928 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 04:13:01,050 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 04:13:01,054 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 04:13:01,064 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 04:13:01,075 INFO L195 MainTranslator]: Completed translation [2018-11-23 04:13:01,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:13:01 WrapperNode [2018-11-23 04:13:01,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 04:13:01,079 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 04:13:01,079 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 04:13:01,079 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 04:13:01,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:13:01" (1/1) ... [2018-11-23 04:13:01,089 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:13:01" (1/1) ... [2018-11-23 04:13:01,094 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 04:13:01,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 04:13:01,095 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 04:13:01,095 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 04:13:01,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:13:01" (1/1) ... [2018-11-23 04:13:01,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:13:01" (1/1) ... [2018-11-23 04:13:01,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:13:01" (1/1) ... [2018-11-23 04:13:01,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:13:01" (1/1) ... [2018-11-23 04:13:01,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:13:01" (1/1) ... [2018-11-23 04:13:01,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:13:01" (1/1) ... [2018-11-23 04:13:01,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:13:01" (1/1) ... [2018-11-23 04:13:01,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 04:13:01,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 04:13:01,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 04:13:01,113 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 04:13:01,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:13:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_474c0ed3-56a9-446a-87eb-ba4f19156531/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 04:13:01,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 04:13:01,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 04:13:01,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 04:13:01,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 04:13:01,201 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 04:13:01,201 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 04:13:01,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-23 04:13:01,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-23 04:13:01,984 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 04:13:01,984 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-23 04:13:01,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:13:01 BoogieIcfgContainer [2018-11-23 04:13:01,985 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 04:13:01,986 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 04:13:01,986 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 04:13:01,989 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 04:13:01,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:13:00" (1/3) ... [2018-11-23 04:13:01,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40771f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:13:01, skipping insertion in model container [2018-11-23 04:13:01,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:13:01" (2/3) ... [2018-11-23 04:13:01,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40771f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:13:01, skipping insertion in model container [2018-11-23 04:13:01,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:13:01" (3/3) ... [2018-11-23 04:13:01,992 INFO L112 eAbstractionObserver]: Analyzing ICFG inv_square_true-unreach-call_true-termination.c [2018-11-23 04:13:01,998 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 04:13:02,005 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 04:13:02,016 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 04:13:02,037 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 04:13:02,037 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 04:13:02,037 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 04:13:02,037 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 04:13:02,038 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 04:13:02,038 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 04:13:02,038 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 04:13:02,038 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 04:13:02,038 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 04:13:02,050 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-11-23 04:13:02,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-23 04:13:02,054 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:13:02,055 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:13:02,056 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:13:02,060 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:13:02,060 INFO L82 PathProgramCache]: Analyzing trace with hash 697060158, now seen corresponding path program 1 times [2018-11-23 04:13:02,063 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-23 04:13:02,063 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_474c0ed3-56a9-446a-87eb-ba4f19156531/bin-2019/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-11-23 04:13:02,067 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:13:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:13:02,141 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 04:13:14,928 WARN L180 SmtUtils]: Spent 8.70 s on a formula simplification that was a NOOP. DAG size: 25 [2018-11-23 04:13:23,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 04:13:23,235 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 04:13:23,248 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 04:13:23,249 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-23 04:13:23,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 04:13:23,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 04:13:23,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-23 04:13:23,263 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 6 states. [2018-11-23 04:13:40,981 WARN L180 SmtUtils]: Spent 13.91 s on a formula simplification that was a NOOP. DAG size: 26 [2018-11-23 04:13:51,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:13:51,773 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-11-23 04:13:51,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 04:13:51,827 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-11-23 04:13:51,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:13:51,832 INFO L225 Difference]: With dead ends: 30 [2018-11-23 04:13:51,832 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 04:13:51,834 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 33.8s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-23 04:13:51,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 04:13:51,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 04:13:51,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 04:13:51,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 04:13:51,851 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2018-11-23 04:13:51,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:13:51,851 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 04:13:51,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 04:13:51,852 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 04:13:51,852 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 04:13:51,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 04:14:06,862 WARN L180 SmtUtils]: Spent 14.96 s on a formula simplification that was a NOOP. DAG size: 26 [2018-11-23 04:14:06,864 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-23 04:14:06,864 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 04:14:06,864 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 04:14:06,865 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 04:14:06,865 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 04:14:06,865 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 04:14:06,865 INFO L448 ceAbstractionStarter]: For program point L17(lines 17 21) no Hoare annotation was computed. [2018-11-23 04:14:06,865 INFO L448 ceAbstractionStarter]: For program point L17-2(lines 17 21) no Hoare annotation was computed. [2018-11-23 04:14:06,865 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 10 23) the Hoare annotation is: true [2018-11-23 04:14:06,865 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 10 23) no Hoare annotation was computed. [2018-11-23 04:14:06,866 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 10 23) no Hoare annotation was computed. [2018-11-23 04:14:06,866 INFO L444 ceAbstractionStarter]: At program point L19(line 19) the Hoare annotation is: (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (fp.geq main_~x~0 (fp.neg .cse0)) (or (exists ((v_prenex_1 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (= (fp.mul roundNearestTiesToEven v_prenex_1 v_prenex_1) main_~y~0) (fp.geq v_prenex_1 (fp.neg .cse1)) (fp.leq v_prenex_1 .cse1) (fp.geq v_prenex_1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 100000000000000000000.0)))))) (exists ((main_~x~0 (_ FloatingPoint 8 24))) (let ((.cse2 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (fp.geq main_~x~0 (fp.neg .cse2)) (= main_~y~0 (fp.mul roundNearestTiesToEven main_~x~0 main_~x~0)) (fp.leq main_~x~0 (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 100000000000000000000.0)))) (fp.leq main_~x~0 .cse2))))) (fp.leq main_~x~0 .cse0))) [2018-11-23 04:14:06,866 INFO L448 ceAbstractionStarter]: For program point L19-1(line 19) no Hoare annotation was computed. [2018-11-23 04:14:06,867 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 8) the Hoare annotation is: true [2018-11-23 04:14:06,867 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 8) no Hoare annotation was computed. [2018-11-23 04:14:06,867 INFO L448 ceAbstractionStarter]: For program point L8(line 8) no Hoare annotation was computed. [2018-11-23 04:14:06,867 INFO L448 ceAbstractionStarter]: For program point L8-1(line 8) no Hoare annotation was computed. [2018-11-23 04:14:06,867 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2018-11-23 04:14:06,867 INFO L448 ceAbstractionStarter]: For program point L8-3(line 8) no Hoare annotation was computed. [2018-11-23 04:14:06,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 04:14:06 BoogieIcfgContainer [2018-11-23 04:14:06,870 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 04:14:06,871 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 04:14:06,871 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 04:14:06,871 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 04:14:06,871 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:13:01" (3/4) ... [2018-11-23 04:14:06,874 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 04:14:06,880 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 04:14:06,880 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 04:14:06,881 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-23 04:14:06,884 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-23 04:14:06,884 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-23 04:14:06,884 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 04:14:06,915 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_474c0ed3-56a9-446a-87eb-ba4f19156531/bin-2019/uautomizer/witness.graphml [2018-11-23 04:14:06,915 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 04:14:06,915 INFO L168 Benchmark]: Toolchain (without parser) took 66016.82 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.8 MB). Free memory was 949.7 MB in the beginning and 1.0 GB in the end (delta: -84.2 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. [2018-11-23 04:14:06,916 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 04:14:06,916 INFO L168 Benchmark]: CACSL2BoogieTranslator took 175.68 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 939.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 04:14:06,917 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.09 ms. Allocated memory is still 1.0 GB. Free memory was 939.0 MB in the beginning and 933.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-23 04:14:06,917 INFO L168 Benchmark]: Boogie Preprocessor took 18.10 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 04:14:06,918 INFO L168 Benchmark]: RCFGBuilder took 872.07 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.8 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -153.1 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2018-11-23 04:14:06,918 INFO L168 Benchmark]: TraceAbstraction took 64884.63 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 11.5 GB. [2018-11-23 04:14:06,919 INFO L168 Benchmark]: Witness Printer took 44.23 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. [2018-11-23 04:14:06,920 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 175.68 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 939.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.09 ms. Allocated memory is still 1.0 GB. Free memory was 939.0 MB in the beginning and 933.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.10 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 872.07 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.8 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -153.1 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 64884.63 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 11.5 GB. * Witness Printer took 44.23 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: - PositiveResult [Line: 8]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. SAFE Result, 64.8s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 28.5s AutomataDifference, 0.0s DeadEndRemovalTime, 15.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 11 SDtfs, 9 SDslu, 39 SDs, 0 SdLazy, 16 SolverSat, 2 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 11.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 33.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 6 NumberOfFragments, 67 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 14.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 21.1s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 1 QuantifiedInterpolants, 693 SizeOfPredicates, 3 NumberOfNonLiveVariables, 20 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...