./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float2_true-unreach-call_true-termination.i --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_e0f9c947-72fe-4e9f-afcc-facabf56d619/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e0f9c947-72fe-4e9f-afcc-facabf56d619/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e0f9c947-72fe-4e9f-afcc-facabf56d619/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e0f9c947-72fe-4e9f-afcc-facabf56d619/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float2_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_e0f9c947-72fe-4e9f-afcc-facabf56d619/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e0f9c947-72fe-4e9f-afcc-facabf56d619/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 0572227f16868054f9308a9d75f98d2abad6a63b ................................................................................................................................................................................................................................................................................................................................................. 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_e0f9c947-72fe-4e9f-afcc-facabf56d619/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e0f9c947-72fe-4e9f-afcc-facabf56d619/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e0f9c947-72fe-4e9f-afcc-facabf56d619/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e0f9c947-72fe-4e9f-afcc-facabf56d619/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float2_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_e0f9c947-72fe-4e9f-afcc-facabf56d619/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e0f9c947-72fe-4e9f-afcc-facabf56d619/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 0572227f16868054f9308a9d75f98d2abad6a63b .................................................................................................................................................................................................................................................................................................................................................................................................................. 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 08:22:22,970 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 08:22:22,971 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 08:22:22,979 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 08:22:22,980 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 08:22:22,981 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 08:22:22,982 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 08:22:22,983 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 08:22:22,984 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 08:22:22,985 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 08:22:22,986 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 08:22:22,986 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 08:22:22,987 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 08:22:22,988 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 08:22:22,988 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 08:22:22,989 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 08:22:22,990 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 08:22:22,991 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 08:22:22,993 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 08:22:22,994 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 08:22:22,995 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 08:22:22,996 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 08:22:22,998 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 08:22:22,998 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 08:22:22,998 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 08:22:22,999 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 08:22:23,000 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 08:22:23,001 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 08:22:23,001 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 08:22:23,003 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 08:22:23,003 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 08:22:23,003 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 08:22:23,004 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 08:22:23,004 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 08:22:23,004 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 08:22:23,005 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 08:22:23,005 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e0f9c947-72fe-4e9f-afcc-facabf56d619/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-23 08:22:23,014 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 08:22:23,014 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 08:22:23,015 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 08:22:23,015 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 08:22:23,015 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 08:22:23,016 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 08:22:23,016 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 08:22:23,016 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 08:22:23,016 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 08:22:23,016 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 08:22:23,016 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 08:22:23,017 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 08:22:23,017 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 08:22:23,017 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 08:22:23,017 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 08:22:23,017 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 08:22:23,017 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 08:22:23,018 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 08:22:23,018 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 08:22:23,019 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 08:22:23,019 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 08:22:23,019 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 08:22:23,020 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 08:22:23,020 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 08:22:23,020 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 08:22:23,020 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 08:22:23,020 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 08:22:23,020 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 08:22:23,020 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 08:22:23,020 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 08:22:23,021 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_e0f9c947-72fe-4e9f-afcc-facabf56d619/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 -> 0572227f16868054f9308a9d75f98d2abad6a63b [2018-11-23 08:22:23,043 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 08:22:23,053 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 08:22:23,056 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 08:22:23,058 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 08:22:23,058 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 08:22:23,058 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e0f9c947-72fe-4e9f-afcc-facabf56d619/bin-2019/uautomizer/../../sv-benchmarks/c/floats-cbmc-regression/float2_true-unreach-call_true-termination.i [2018-11-23 08:22:23,104 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e0f9c947-72fe-4e9f-afcc-facabf56d619/bin-2019/uautomizer/data/c8476cb09/e91c65d85ef14141ae904bf7ab3cfbe5/FLAG9e9dfe067 [2018-11-23 08:22:23,458 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 08:22:23,458 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e0f9c947-72fe-4e9f-afcc-facabf56d619/sv-benchmarks/c/floats-cbmc-regression/float2_true-unreach-call_true-termination.i [2018-11-23 08:22:23,464 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e0f9c947-72fe-4e9f-afcc-facabf56d619/bin-2019/uautomizer/data/c8476cb09/e91c65d85ef14141ae904bf7ab3cfbe5/FLAG9e9dfe067 [2018-11-23 08:22:23,893 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e0f9c947-72fe-4e9f-afcc-facabf56d619/bin-2019/uautomizer/data/c8476cb09/e91c65d85ef14141ae904bf7ab3cfbe5 [2018-11-23 08:22:23,895 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 08:22:23,897 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 08:22:23,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 08:22:23,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 08:22:23,901 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 08:22:23,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:22:23" (1/1) ... [2018-11-23 08:22:23,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1617a3eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:23, skipping insertion in model container [2018-11-23 08:22:23,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:22:23" (1/1) ... [2018-11-23 08:22:23,911 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 08:22:23,926 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 08:22:24,050 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 08:22:24,054 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 08:22:24,064 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 08:22:24,076 INFO L195 MainTranslator]: Completed translation [2018-11-23 08:22:24,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:24 WrapperNode [2018-11-23 08:22:24,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 08:22:24,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 08:22:24,077 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 08:22:24,077 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 08:22:24,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:24" (1/1) ... [2018-11-23 08:22:24,088 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:24" (1/1) ... [2018-11-23 08:22:24,092 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 08:22:24,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 08:22:24,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 08:22:24,093 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 08:22:24,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:24" (1/1) ... [2018-11-23 08:22:24,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:24" (1/1) ... [2018-11-23 08:22:24,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:24" (1/1) ... [2018-11-23 08:22:24,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:24" (1/1) ... [2018-11-23 08:22:24,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:24" (1/1) ... [2018-11-23 08:22:24,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:24" (1/1) ... [2018-11-23 08:22:24,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:24" (1/1) ... [2018-11-23 08:22:24,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 08:22:24,107 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 08:22:24,107 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 08:22:24,107 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 08:22:24,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e0f9c947-72fe-4e9f-afcc-facabf56d619/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 08:22:24,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 08:22:24,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 08:22:24,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 08:22:24,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 08:22:24,197 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 08:22:24,197 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 08:22:24,313 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 08:22:24,313 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-23 08:22:24,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:22:24 BoogieIcfgContainer [2018-11-23 08:22:24,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 08:22:24,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 08:22:24,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 08:22:24,318 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 08:22:24,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:22:23" (1/3) ... [2018-11-23 08:22:24,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4106e745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:22:24, skipping insertion in model container [2018-11-23 08:22:24,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:24" (2/3) ... [2018-11-23 08:22:24,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4106e745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:22:24, skipping insertion in model container [2018-11-23 08:22:24,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:22:24" (3/3) ... [2018-11-23 08:22:24,321 INFO L112 eAbstractionObserver]: Analyzing ICFG float2_true-unreach-call_true-termination.i [2018-11-23 08:22:24,331 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 08:22:24,339 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-23 08:22:24,356 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-23 08:22:24,387 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 08:22:24,388 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 08:22:24,388 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 08:22:24,388 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 08:22:24,388 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 08:22:24,388 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 08:22:24,388 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 08:22:24,389 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 08:22:24,389 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 08:22:24,407 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-11-23 08:22:24,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-11-23 08:22:24,413 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 08:22:24,413 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-23 08:22:24,416 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 08:22:24,421 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:22:24,422 INFO L82 PathProgramCache]: Analyzing trace with hash -484171444, now seen corresponding path program 1 times [2018-11-23 08:22:24,424 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:22:24,424 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:22:24,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:22:24,471 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 08:22:24,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:22:24,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:22:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:22:24,512 INFO L469 BasicCegarLoop]: Counterexample might be feasible ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator [?] CALL call ULTIMATE.init(); [?] assume true; [?] RET #42#return; [?] CALL call #t~ret0 := main(); [?] havoc ~a~0;havoc ~b~0;~a~0 := 1.25; VAL [main_~a~0=(/ 5.0 4.0)] [?] assume !~someBinaryDOUBLEComparisonOperation(~a~0, 1.25); VAL [main_~a~0=(/ 5.0 4.0)] [?] assume !false; VAL [main_~a~0=(/ 5.0 4.0)] [?] CALL call ULTIMATE.init(); [?] ensures true; [?] RET call ULTIMATE.init(); [?] CALL call #t~ret0 := main(); [L5] havoc ~a~0; [L6] havoc ~b~0; [L9] ~a~0 := 1.25; VAL [~a~0=5/4] [L10] assume !~someBinaryDOUBLEComparisonOperation(~a~0, 1.25); VAL [~a~0=5/4] [L10] assert false; VAL [~a~0=5/4] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.preprocessor.BoogiePreprocessorBacktranslator [?] CALL call ULTIMATE.init(); [?] ensures true; [?] RET call ULTIMATE.init(); [?] CALL call #t~ret0 := main(); [L5] havoc ~a~0; [L6] havoc ~b~0; [L9] ~a~0 := 1.25; VAL [~a~0=5/4] [L10] assume !~someBinaryDOUBLEComparisonOperation(~a~0, 1.25); VAL [~a~0=5/4] [L10] assert false; VAL [~a~0=5/4] [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret0 := main(); [L5] havoc ~a~0; [L6] havoc ~b~0; [L9] ~a~0 := 1.25; VAL [~a~0=5/4] [L10] COND TRUE !~someBinaryDOUBLEComparisonOperation(~a~0, 1.25) VAL [~a~0=5/4] [L10] assert false; VAL [~a~0=5/4] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret0 := main(); [L5] havoc ~a~0; [L6] havoc ~b~0; [L9] ~a~0 := 1.25; VAL [~a~0=5/4] [L10] COND TRUE !~someBinaryDOUBLEComparisonOperation(~a~0, 1.25) VAL [~a~0=5/4] [L10] assert false; VAL [~a~0=5/4] [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret0 := main(); [L5] havoc ~a~0; [L6] havoc ~b~0; [L9] ~a~0 := 1.25; VAL [~a~0=5/4] [L10] COND TRUE !~someBinaryDOUBLEComparisonOperation(~a~0, 1.25) VAL [~a~0=5/4] [L10] assert false; VAL [~a~0=5/4] ----- ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret0 := main(); [L5] havoc ~a~0; [L6] havoc ~b~0; [L9] ~a~0 := 1.25; VAL [~a~0=5/4] [L10] COND TRUE !~someBinaryDOUBLEComparisonOperation(~a~0, 1.25) VAL [~a~0=5/4] [L10] assert false; VAL [~a~0=5/4] [L5] float a; [L6] double b; [L9] a=1.25L VAL [a=5/4] [L10] COND TRUE !(a==1.25) VAL [a=5/4] [L10] __VERIFIER_error() VAL [a=5/4] ----- [2018-11-23 08:22:24,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 08:22:24 BoogieIcfgContainer [2018-11-23 08:22:24,534 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 08:22:24,535 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 08:22:24,535 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 08:22:24,535 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 08:22:24,535 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:22:24" (3/4) ... [2018-11-23 08:22:24,538 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-23 08:22:24,538 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 08:22:24,539 INFO L168 Benchmark]: Toolchain (without parser) took 643.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.8 MB). Free memory was 960.9 MB in the beginning and 1.1 GB in the end (delta: -160.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 08:22:24,540 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 08:22:24,541 INFO L168 Benchmark]: CACSL2BoogieTranslator took 179.25 ms. Allocated memory is still 1.0 GB. Free memory was 960.9 MB in the beginning and 950.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 08:22:24,541 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.72 ms. Allocated memory is still 1.0 GB. Free memory is still 950.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 08:22:24,542 INFO L168 Benchmark]: Boogie Preprocessor took 13.80 ms. Allocated memory is still 1.0 GB. Free memory was 950.1 MB in the beginning and 944.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-23 08:22:24,542 INFO L168 Benchmark]: RCFGBuilder took 206.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.8 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -190.8 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. [2018-11-23 08:22:24,543 INFO L168 Benchmark]: TraceAbstraction took 219.91 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: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. [2018-11-23 08:22:24,544 INFO L168 Benchmark]: Witness Printer took 3.77 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 08:22:24,546 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 179.25 ms. Allocated memory is still 1.0 GB. Free memory was 960.9 MB in the beginning and 950.1 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 15.72 ms. Allocated memory is still 1.0 GB. Free memory is still 950.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.80 ms. Allocated memory is still 1.0 GB. Free memory was 950.1 MB in the beginning and 944.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 206.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.8 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -190.8 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 219.91 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: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. * Witness Printer took 3.77 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: 10]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 10. Possible FailurePath: [L5] float a; [L6] double b; [L9] a=1.25L VAL [a=5/4] [L10] COND TRUE !(a==1.25) VAL [a=5/4] [L10] __VERIFIER_error() VAL [a=5/4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 24 locations, 4 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=24occurred 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, 7 NumberOfCodeBlocks, 7 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 08:22:26,219 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 08:22:26,220 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 08:22:26,231 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 08:22:26,232 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 08:22:26,233 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 08:22:26,234 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 08:22:26,235 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 08:22:26,237 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 08:22:26,238 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 08:22:26,238 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 08:22:26,239 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 08:22:26,240 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 08:22:26,240 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 08:22:26,241 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 08:22:26,242 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 08:22:26,243 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 08:22:26,244 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 08:22:26,246 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 08:22:26,247 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 08:22:26,248 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 08:22:26,249 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 08:22:26,252 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 08:22:26,252 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 08:22:26,252 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 08:22:26,253 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 08:22:26,254 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 08:22:26,254 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 08:22:26,255 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 08:22:26,256 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 08:22:26,256 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 08:22:26,257 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 08:22:26,257 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 08:22:26,257 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 08:22:26,258 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 08:22:26,259 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 08:22:26,259 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e0f9c947-72fe-4e9f-afcc-facabf56d619/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-23 08:22:26,272 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 08:22:26,272 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 08:22:26,273 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 08:22:26,273 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 08:22:26,273 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 08:22:26,273 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 08:22:26,274 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 08:22:26,274 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 08:22:26,274 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 08:22:26,274 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 08:22:26,274 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 08:22:26,275 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 08:22:26,275 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 08:22:26,275 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 08:22:26,275 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-23 08:22:26,275 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-23 08:22:26,276 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 08:22:26,276 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 08:22:26,276 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 08:22:26,276 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 08:22:26,276 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 08:22:26,276 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 08:22:26,277 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 08:22:26,277 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 08:22:26,277 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 08:22:26,277 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 08:22:26,277 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 08:22:26,277 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 08:22:26,278 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-23 08:22:26,278 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 08:22:26,278 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-23 08:22:26,278 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-23 08:22:26,278 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_e0f9c947-72fe-4e9f-afcc-facabf56d619/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 -> 0572227f16868054f9308a9d75f98d2abad6a63b [2018-11-23 08:22:26,315 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 08:22:26,326 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 08:22:26,329 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 08:22:26,331 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 08:22:26,331 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 08:22:26,332 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e0f9c947-72fe-4e9f-afcc-facabf56d619/bin-2019/uautomizer/../../sv-benchmarks/c/floats-cbmc-regression/float2_true-unreach-call_true-termination.i [2018-11-23 08:22:26,388 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e0f9c947-72fe-4e9f-afcc-facabf56d619/bin-2019/uautomizer/data/b9b007f6f/5d6d5590de3f4c74a0d696ae83abbeaa/FLAG60a6af4ed [2018-11-23 08:22:26,740 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 08:22:26,741 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e0f9c947-72fe-4e9f-afcc-facabf56d619/sv-benchmarks/c/floats-cbmc-regression/float2_true-unreach-call_true-termination.i [2018-11-23 08:22:26,746 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e0f9c947-72fe-4e9f-afcc-facabf56d619/bin-2019/uautomizer/data/b9b007f6f/5d6d5590de3f4c74a0d696ae83abbeaa/FLAG60a6af4ed [2018-11-23 08:22:26,760 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e0f9c947-72fe-4e9f-afcc-facabf56d619/bin-2019/uautomizer/data/b9b007f6f/5d6d5590de3f4c74a0d696ae83abbeaa [2018-11-23 08:22:26,763 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 08:22:26,764 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 08:22:26,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 08:22:26,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 08:22:26,767 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 08:22:26,768 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:22:26" (1/1) ... [2018-11-23 08:22:26,770 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@df26020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:26, skipping insertion in model container [2018-11-23 08:22:26,770 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:22:26" (1/1) ... [2018-11-23 08:22:26,777 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 08:22:26,793 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 08:22:26,924 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 08:22:26,931 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 08:22:26,945 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 08:22:26,955 INFO L195 MainTranslator]: Completed translation [2018-11-23 08:22:26,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:26 WrapperNode [2018-11-23 08:22:26,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 08:22:26,960 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 08:22:26,961 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 08:22:26,961 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 08:22:26,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:26" (1/1) ... [2018-11-23 08:22:26,972 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:26" (1/1) ... [2018-11-23 08:22:26,977 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 08:22:26,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 08:22:26,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 08:22:26,977 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 08:22:26,983 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:26" (1/1) ... [2018-11-23 08:22:26,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:26" (1/1) ... [2018-11-23 08:22:26,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:26" (1/1) ... [2018-11-23 08:22:26,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:26" (1/1) ... [2018-11-23 08:22:26,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:26" (1/1) ... [2018-11-23 08:22:26,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:26" (1/1) ... [2018-11-23 08:22:26,993 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:26" (1/1) ... [2018-11-23 08:22:26,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 08:22:26,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 08:22:26,996 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 08:22:26,996 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 08:22:26,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e0f9c947-72fe-4e9f-afcc-facabf56d619/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 08:22:27,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 08:22:27,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 08:22:27,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 08:22:27,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 08:22:27,085 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 08:22:27,085 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 08:22:27,415 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 08:22:27,415 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-23 08:22:27,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:22:27 BoogieIcfgContainer [2018-11-23 08:22:27,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 08:22:27,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 08:22:27,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 08:22:27,420 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 08:22:27,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:22:26" (1/3) ... [2018-11-23 08:22:27,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@447034cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:22:27, skipping insertion in model container [2018-11-23 08:22:27,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:26" (2/3) ... [2018-11-23 08:22:27,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@447034cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:22:27, skipping insertion in model container [2018-11-23 08:22:27,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:22:27" (3/3) ... [2018-11-23 08:22:27,423 INFO L112 eAbstractionObserver]: Analyzing ICFG float2_true-unreach-call_true-termination.i [2018-11-23 08:22:27,433 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 08:22:27,440 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-23 08:22:27,456 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-23 08:22:27,478 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 08:22:27,478 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 08:22:27,478 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 08:22:27,479 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 08:22:27,479 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 08:22:27,479 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 08:22:27,479 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 08:22:27,479 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 08:22:27,479 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 08:22:27,497 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-11-23 08:22:27,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-11-23 08:22:27,502 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 08:22:27,503 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-23 08:22:27,504 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 08:22:27,508 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:22:27,508 INFO L82 PathProgramCache]: Analyzing trace with hash -484171444, now seen corresponding path program 1 times [2018-11-23 08:22:27,511 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-23 08:22:27,512 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e0f9c947-72fe-4e9f-afcc-facabf56d619/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 08:22:27,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 08:22:27,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:22:27,553 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:22:27,584 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 08:22:27,584 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 08:22:27,599 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 08:22:27,599 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 08:22:27,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 08:22:27,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 08:22:27,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 08:22:27,614 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2018-11-23 08:22:27,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 08:22:27,673 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2018-11-23 08:22:27,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 08:22:27,676 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-11-23 08:22:27,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 08:22:27,684 INFO L225 Difference]: With dead ends: 40 [2018-11-23 08:22:27,684 INFO L226 Difference]: Without dead ends: 18 [2018-11-23 08:22:27,687 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 08:22:27,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-23 08:22:27,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-23 08:22:27,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-23 08:22:27,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2018-11-23 08:22:27,717 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 7 [2018-11-23 08:22:27,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 08:22:27,717 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2018-11-23 08:22:27,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 08:22:27,717 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2018-11-23 08:22:27,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-23 08:22:27,718 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 08:22:27,718 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 08:22:27,718 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 08:22:27,719 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:22:27,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1432165234, now seen corresponding path program 1 times [2018-11-23 08:22:27,719 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-23 08:22:27,719 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e0f9c947-72fe-4e9f-afcc-facabf56d619/bin-2019/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-11-23 08:22:27,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 08:22:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:22:27,749 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:22:27,758 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 08:22:27,759 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 08:22:27,769 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 08:22:27,769 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 08:22:27,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 08:22:27,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 08:22:27,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 08:22:27,770 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand 3 states. [2018-11-23 08:22:27,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 08:22:27,776 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2018-11-23 08:22:27,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 08:22:27,777 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-11-23 08:22:27,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 08:22:27,778 INFO L225 Difference]: With dead ends: 18 [2018-11-23 08:22:27,778 INFO L226 Difference]: Without dead ends: 16 [2018-11-23 08:22:27,778 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 08:22:27,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-23 08:22:27,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-11-23 08:22:27,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-23 08:22:27,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2018-11-23 08:22:27,781 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 9 [2018-11-23 08:22:27,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 08:22:27,781 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2018-11-23 08:22:27,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 08:22:27,781 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2018-11-23 08:22:27,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-23 08:22:27,781 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 08:22:27,782 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 08:22:27,782 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 08:22:27,782 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:22:27,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1921130384, now seen corresponding path program 1 times [2018-11-23 08:22:27,783 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-23 08:22:27,783 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e0f9c947-72fe-4e9f-afcc-facabf56d619/bin-2019/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-11-23 08:22:27,787 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 08:22:27,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:22:27,804 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:22:27,813 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 08:22:27,813 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 08:22:27,821 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 08:22:27,821 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 08:22:27,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 08:22:27,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 08:22:27,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 08:22:27,822 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand 3 states. [2018-11-23 08:22:27,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 08:22:27,891 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2018-11-23 08:22:27,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 08:22:27,892 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-23 08:22:27,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 08:22:27,893 INFO L225 Difference]: With dead ends: 16 [2018-11-23 08:22:27,893 INFO L226 Difference]: Without dead ends: 14 [2018-11-23 08:22:27,893 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 08:22:27,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-23 08:22:27,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-23 08:22:27,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-23 08:22:27,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2018-11-23 08:22:27,895 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 11 [2018-11-23 08:22:27,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 08:22:27,896 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2018-11-23 08:22:27,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 08:22:27,896 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2018-11-23 08:22:27,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-23 08:22:27,896 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 08:22:27,897 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 08:22:27,897 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 08:22:27,897 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:22:27,897 INFO L82 PathProgramCache]: Analyzing trace with hash 629763314, now seen corresponding path program 1 times [2018-11-23 08:22:27,898 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-23 08:22:27,898 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e0f9c947-72fe-4e9f-afcc-facabf56d619/bin-2019/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-11-23 08:22:27,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 08:22:27,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:22:27,917 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:22:27,926 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 08:22:27,926 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 08:22:27,934 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 08:22:27,934 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 08:22:27,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 08:22:27,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 08:22:27,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 08:22:27,935 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand 3 states. [2018-11-23 08:22:27,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 08:22:27,979 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2018-11-23 08:22:27,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 08:22:27,980 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-11-23 08:22:27,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 08:22:27,980 INFO L225 Difference]: With dead ends: 14 [2018-11-23 08:22:27,980 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 08:22:27,981 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 08:22:27,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 08:22:27,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 08:22:27,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 08:22:27,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 08:22:27,982 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2018-11-23 08:22:27,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 08:22:27,982 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 08:22:27,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 08:22:27,982 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 08:22:27,983 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 08:22:27,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 08:22:28,021 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-23 08:22:28,022 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 08:22:28,022 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 08:22:28,022 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 08:22:28,022 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 08:22:28,022 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 08:22:28,022 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 3 22) no Hoare annotation was computed. [2018-11-23 08:22:28,022 INFO L448 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2018-11-23 08:22:28,023 INFO L448 ceAbstractionStarter]: For program point L21-1(line 21) no Hoare annotation was computed. [2018-11-23 08:22:28,023 INFO L448 ceAbstractionStarter]: For program point L21-3(lines 3 22) no Hoare annotation was computed. [2018-11-23 08:22:28,023 INFO L448 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2018-11-23 08:22:28,023 INFO L448 ceAbstractionStarter]: For program point L17-1(line 17) no Hoare annotation was computed. [2018-11-23 08:22:28,023 INFO L448 ceAbstractionStarter]: For program point L17-3(line 17) no Hoare annotation was computed. [2018-11-23 08:22:28,023 INFO L448 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2018-11-23 08:22:28,023 INFO L448 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2018-11-23 08:22:28,023 INFO L448 ceAbstractionStarter]: For program point L13-3(line 13) no Hoare annotation was computed. [2018-11-23 08:22:28,023 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 3 22) the Hoare annotation is: true [2018-11-23 08:22:28,023 INFO L448 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2018-11-23 08:22:28,024 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2018-11-23 08:22:28,024 INFO L448 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2018-11-23 08:22:28,024 INFO L448 ceAbstractionStarter]: For program point L10(line 10) no Hoare annotation was computed. [2018-11-23 08:22:28,024 INFO L448 ceAbstractionStarter]: For program point L10-1(line 10) no Hoare annotation was computed. [2018-11-23 08:22:28,024 INFO L448 ceAbstractionStarter]: For program point L10-3(line 10) no Hoare annotation was computed. [2018-11-23 08:22:28,024 INFO L448 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2018-11-23 08:22:28,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 08:22:28 BoogieIcfgContainer [2018-11-23 08:22:28,027 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 08:22:28,028 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 08:22:28,028 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 08:22:28,028 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 08:22:28,028 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:22:27" (3/4) ... [2018-11-23 08:22:28,032 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 08:22:28,037 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 08:22:28,038 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 08:22:28,040 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-11-23 08:22:28,041 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-23 08:22:28,041 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 08:22:28,071 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_e0f9c947-72fe-4e9f-afcc-facabf56d619/bin-2019/uautomizer/witness.graphml [2018-11-23 08:22:28,071 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 08:22:28,071 INFO L168 Benchmark]: Toolchain (without parser) took 1308.12 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 949.7 MB in the beginning and 1.0 GB in the end (delta: -88.6 MB). Peak memory consumption was 31.5 MB. Max. memory is 11.5 GB. [2018-11-23 08:22:28,072 INFO L168 Benchmark]: CDTParser took 0.21 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 08:22:28,073 INFO L168 Benchmark]: CACSL2BoogieTranslator took 191.48 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 08:22:28,073 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.34 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 08:22:28,073 INFO L168 Benchmark]: Boogie Preprocessor took 18.37 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 08:22:28,073 INFO L168 Benchmark]: RCFGBuilder took 420.13 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -170.7 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2018-11-23 08:22:28,074 INFO L168 Benchmark]: TraceAbstraction took 610.75 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: 66.0 MB). Peak memory consumption was 66.0 MB. Max. memory is 11.5 GB. [2018-11-23 08:22:28,074 INFO L168 Benchmark]: Witness Printer took 43.30 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 08:22:28,076 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 191.48 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 16.34 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 18.37 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 420.13 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -170.7 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 610.75 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: 66.0 MB). Peak memory consumption was 66.0 MB. Max. memory is 11.5 GB. * Witness Printer took 43.30 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: 21]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 13]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 10]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 24 locations, 4 error locations. SAFE Result, 0.5s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 57 SDtfs, 14 SDslu, 27 SDs, 0 SdLazy, 18 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 4 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 544 SizeOfPredicates, 4 NumberOfNonLiveVariables, 64 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...