./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/ldv-regression/test07_true-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_425269d5-d139-48b8-a884-6b0f36235b38/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_425269d5-d139-48b8-a884-6b0f36235b38/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_425269d5-d139-48b8-a884-6b0f36235b38/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_425269d5-d139-48b8-a884-6b0f36235b38/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test07_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_425269d5-d139-48b8-a884-6b0f36235b38/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_425269d5-d139-48b8-a884-6b0f36235b38/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3fb4305112f4412dd538a0b9d1d1441504f2d55d ....................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 13:07:51,972 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 13:07:51,976 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 13:07:51,988 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 13:07:51,990 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 13:07:51,991 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 13:07:51,994 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 13:07:51,998 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 13:07:51,999 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 13:07:51,999 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 13:07:52,000 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 13:07:52,000 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 13:07:52,001 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 13:07:52,002 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 13:07:52,002 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 13:07:52,004 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 13:07:52,004 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 13:07:52,006 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 13:07:52,007 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 13:07:52,009 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 13:07:52,009 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 13:07:52,010 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 13:07:52,013 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 13:07:52,013 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 13:07:52,013 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 13:07:52,014 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 13:07:52,014 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 13:07:52,016 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 13:07:52,016 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 13:07:52,017 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 13:07:52,017 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 13:07:52,018 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 13:07:52,018 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 13:07:52,018 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 13:07:52,020 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 13:07:52,021 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 13:07:52,021 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_425269d5-d139-48b8-a884-6b0f36235b38/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 13:07:52,041 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 13:07:52,041 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 13:07:52,042 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 13:07:52,042 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 13:07:52,042 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 13:07:52,042 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 13:07:52,042 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 13:07:52,042 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 13:07:52,043 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 13:07:52,047 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 13:07:52,047 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 13:07:52,047 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 13:07:52,047 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 13:07:52,048 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 13:07:52,048 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 13:07:52,048 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 13:07:52,048 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 13:07:52,048 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 13:07:52,049 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 13:07:52,049 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 13:07:52,049 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 13:07:52,049 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 13:07:52,049 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 13:07:52,049 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 13:07:52,049 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 13:07:52,049 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 13:07:52,050 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 13:07:52,050 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 13:07:52,050 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 13:07:52,050 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 13:07:52,050 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 13:07:52,050 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 13:07:52,050 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 13:07:52,050 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 13:07:52,054 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 13:07:52,055 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 13:07:52,055 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 13:07:52,055 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_425269d5-d139-48b8-a884-6b0f36235b38/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3fb4305112f4412dd538a0b9d1d1441504f2d55d [2018-11-18 13:07:52,100 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 13:07:52,124 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 13:07:52,128 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 13:07:52,136 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 13:07:52,136 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 13:07:52,137 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_425269d5-d139-48b8-a884-6b0f36235b38/bin-2019/utaipan/../../sv-benchmarks/c/ldv-regression/test07_true-unreach-call_true-termination.c [2018-11-18 13:07:52,233 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_425269d5-d139-48b8-a884-6b0f36235b38/bin-2019/utaipan/data/c26dc5db7/bda74b76c2c0487b8f6c133386de0ebe/FLAG6c76946d5 [2018-11-18 13:07:52,613 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 13:07:52,614 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_425269d5-d139-48b8-a884-6b0f36235b38/sv-benchmarks/c/ldv-regression/test07_true-unreach-call_true-termination.c [2018-11-18 13:07:52,619 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_425269d5-d139-48b8-a884-6b0f36235b38/bin-2019/utaipan/data/c26dc5db7/bda74b76c2c0487b8f6c133386de0ebe/FLAG6c76946d5 [2018-11-18 13:07:52,631 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_425269d5-d139-48b8-a884-6b0f36235b38/bin-2019/utaipan/data/c26dc5db7/bda74b76c2c0487b8f6c133386de0ebe [2018-11-18 13:07:52,634 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 13:07:52,635 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 13:07:52,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 13:07:52,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 13:07:52,640 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 13:07:52,641 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:07:52" (1/1) ... [2018-11-18 13:07:52,643 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4959e04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:07:52, skipping insertion in model container [2018-11-18 13:07:52,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:07:52" (1/1) ... [2018-11-18 13:07:52,652 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 13:07:52,669 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 13:07:52,862 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:07:52,875 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 13:07:52,896 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:07:52,926 INFO L195 MainTranslator]: Completed translation [2018-11-18 13:07:52,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:07:52 WrapperNode [2018-11-18 13:07:52,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 13:07:52,928 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 13:07:52,928 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 13:07:52,928 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 13:07:52,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:07:52" (1/1) ... [2018-11-18 13:07:52,956 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:07:52" (1/1) ... [2018-11-18 13:07:52,967 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 13:07:52,967 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 13:07:52,967 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 13:07:52,967 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 13:07:52,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:07:52" (1/1) ... [2018-11-18 13:07:52,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:07:52" (1/1) ... [2018-11-18 13:07:52,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:07:52" (1/1) ... [2018-11-18 13:07:52,993 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:07:52" (1/1) ... [2018-11-18 13:07:52,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:07:52" (1/1) ... [2018-11-18 13:07:53,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:07:52" (1/1) ... [2018-11-18 13:07:53,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:07:52" (1/1) ... [2018-11-18 13:07:53,005 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 13:07:53,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 13:07:53,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 13:07:53,012 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 13:07:53,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:07:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_425269d5-d139-48b8-a884-6b0f36235b38/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 13:07:53,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 13:07:53,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 13:07:53,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 13:07:53,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 13:07:53,134 INFO L130 BoogieDeclarations]: Found specification of procedure f [2018-11-18 13:07:53,135 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2018-11-18 13:07:53,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 13:07:53,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 13:07:53,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 13:07:53,136 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 13:07:53,136 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 13:07:53,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 13:07:53,406 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 13:07:53,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:07:53 BoogieIcfgContainer [2018-11-18 13:07:53,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 13:07:53,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 13:07:53,407 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 13:07:53,409 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 13:07:53,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:07:52" (1/3) ... [2018-11-18 13:07:53,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2efd40ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:07:53, skipping insertion in model container [2018-11-18 13:07:53,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:07:52" (2/3) ... [2018-11-18 13:07:53,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2efd40ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:07:53, skipping insertion in model container [2018-11-18 13:07:53,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:07:53" (3/3) ... [2018-11-18 13:07:53,415 INFO L112 eAbstractionObserver]: Analyzing ICFG test07_true-unreach-call_true-termination.c [2018-11-18 13:07:53,423 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 13:07:53,430 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 13:07:53,443 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 13:07:53,486 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 13:07:53,488 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 13:07:53,489 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 13:07:53,489 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 13:07:53,489 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 13:07:53,489 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 13:07:53,489 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 13:07:53,490 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 13:07:53,507 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-11-18 13:07:53,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-18 13:07:53,512 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:07:53,513 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:07:53,515 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:07:53,520 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:07:53,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1889415219, now seen corresponding path program 1 times [2018-11-18 13:07:53,522 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:07:53,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:07:53,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:07:53,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:07:53,565 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:07:53,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:07:53,994 WARN L180 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 12 [2018-11-18 13:07:54,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:07:54,056 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:07:54,056 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 13:07:54,059 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 13:07:54,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 13:07:54,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 13:07:54,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 13:07:54,079 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 5 states. [2018-11-18 13:07:54,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:07:54,257 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2018-11-18 13:07:54,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 13:07:54,259 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-11-18 13:07:54,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:07:54,267 INFO L225 Difference]: With dead ends: 29 [2018-11-18 13:07:54,267 INFO L226 Difference]: Without dead ends: 15 [2018-11-18 13:07:54,270 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 13:07:54,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-11-18 13:07:54,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-18 13:07:54,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-18 13:07:54,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2018-11-18 13:07:54,301 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 14 [2018-11-18 13:07:54,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:07:54,301 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2018-11-18 13:07:54,301 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 13:07:54,302 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2018-11-18 13:07:54,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-18 13:07:54,302 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:07:54,302 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:07:54,302 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:07:54,304 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:07:54,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1918044370, now seen corresponding path program 1 times [2018-11-18 13:07:54,304 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:07:54,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:07:54,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:07:54,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:07:54,305 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:07:54,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:07:54,617 WARN L180 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2018-11-18 13:07:55,076 WARN L180 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2018-11-18 13:07:55,421 WARN L180 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2018-11-18 13:07:55,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:07:55,430 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:07:55,430 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 13:07:55,430 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 13:07:55,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 13:07:55,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 13:07:55,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-11-18 13:07:55,432 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand 7 states. [2018-11-18 13:07:55,946 WARN L180 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 31 [2018-11-18 13:07:55,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:07:55,949 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2018-11-18 13:07:55,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 13:07:55,950 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2018-11-18 13:07:55,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:07:55,950 INFO L225 Difference]: With dead ends: 15 [2018-11-18 13:07:55,950 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 13:07:55,951 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-11-18 13:07:55,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 13:07:55,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 13:07:55,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 13:07:55,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 13:07:55,952 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2018-11-18 13:07:55,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:07:55,952 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 13:07:55,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 13:07:55,952 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 13:07:55,953 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 13:07:55,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 13:07:56,093 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-18 13:07:56,094 INFO L421 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~p1~0.offset |old(~p1~0.offset)|) (= ~p1~0.base |old(~p1~0.base)|)) [2018-11-18 13:07:56,094 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 13:07:56,094 INFO L425 ceAbstractionStarter]: For program point L9(lines 9 14) no Hoare annotation was computed. [2018-11-18 13:07:56,094 INFO L425 ceAbstractionStarter]: For program point fEXIT(lines 7 15) no Hoare annotation was computed. [2018-11-18 13:07:56,094 INFO L421 ceAbstractionStarter]: At program point fENTRY(lines 7 15) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (not (= 1 (select (select |#memory_int| ~p2~0.base) ~p2~0.offset))) (and (= ~p1~0.offset |old(~p1~0.offset)|) (= |~#a~0.base| ~p1~0.base)) (not (= |~#a~0.offset| |old(~p1~0.offset)|)) (not (= |old(~p1~0.base)| |~#a~0.base|))) [2018-11-18 13:07:56,094 INFO L425 ceAbstractionStarter]: For program point fFINAL(lines 7 15) no Hoare annotation was computed. [2018-11-18 13:07:56,094 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 13:07:56,095 INFO L421 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (not (= |~#b~0.base| |~#a~0.base|)) [2018-11-18 13:07:56,095 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 13:07:56,095 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 13:07:56,095 INFO L421 ceAbstractionStarter]: At program point L30(lines 17 37) the Hoare annotation is: (= |~#a~0.base| |~#b~0.base|) [2018-11-18 13:07:56,095 INFO L421 ceAbstractionStarter]: At program point mainENTRY(lines 17 37) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (and (= ~p1~0.offset |old(~p1~0.offset)|) (= ~p1~0.base |old(~p1~0.base)|))) [2018-11-18 13:07:56,095 INFO L425 ceAbstractionStarter]: For program point L29(lines 29 31) no Hoare annotation was computed. [2018-11-18 13:07:56,095 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 17 37) no Hoare annotation was computed. [2018-11-18 13:07:56,096 INFO L421 ceAbstractionStarter]: At program point L27(line 27) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (and (= |~#a~0.offset| ~p1~0.offset) (= (select (select |#memory_int| ~p2~0.base) ~p2~0.offset) 1) (= |~#a~0.base| ~p1~0.base))) [2018-11-18 13:07:56,096 INFO L425 ceAbstractionStarter]: For program point L27-1(line 27) no Hoare annotation was computed. [2018-11-18 13:07:56,096 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 17 37) no Hoare annotation was computed. [2018-11-18 13:07:56,096 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 35) no Hoare annotation was computed. [2018-11-18 13:07:56,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 01:07:56 BoogieIcfgContainer [2018-11-18 13:07:56,111 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 13:07:56,111 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 13:07:56,111 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 13:07:56,112 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 13:07:56,112 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:07:53" (3/4) ... [2018-11-18 13:07:56,115 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 13:07:56,121 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 13:07:56,121 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2018-11-18 13:07:56,122 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 13:07:56,125 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2018-11-18 13:07:56,126 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-11-18 13:07:56,126 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 13:07:56,126 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 13:07:56,166 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_425269d5-d139-48b8-a884-6b0f36235b38/bin-2019/utaipan/witness.graphml [2018-11-18 13:07:56,166 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 13:07:56,167 INFO L168 Benchmark]: Toolchain (without parser) took 3531.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 960.7 MB in the beginning and 1.0 GB in the end (delta: -57.8 MB). Peak memory consumption was 76.4 MB. Max. memory is 11.5 GB. [2018-11-18 13:07:56,167 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:07:56,168 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.05 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 950.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 13:07:56,168 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.05 ms. Allocated memory is still 1.0 GB. Free memory was 950.0 MB in the beginning and 947.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 13:07:56,169 INFO L168 Benchmark]: Boogie Preprocessor took 43.26 ms. Allocated memory is still 1.0 GB. Free memory is still 947.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:07:56,169 INFO L168 Benchmark]: RCFGBuilder took 395.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -168.9 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2018-11-18 13:07:56,169 INFO L168 Benchmark]: TraceAbstraction took 2704.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 95.0 MB). Peak memory consumption was 95.0 MB. Max. memory is 11.5 GB. [2018-11-18 13:07:56,170 INFO L168 Benchmark]: Witness Printer took 54.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 13:07:56,172 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 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 291.05 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 950.0 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 39.05 ms. Allocated memory is still 1.0 GB. Free memory was 950.0 MB in the beginning and 947.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 43.26 ms. Allocated memory is still 1.0 GB. Free memory is still 947.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 395.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -168.9 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2704.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 95.0 MB). Peak memory consumption was 95.0 MB. Max. memory is 11.5 GB. * Witness Printer took 54.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 35]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: a == b - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. SAFE Result, 2.6s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 23 SDtfs, 3 SDslu, 39 SDs, 0 SdLazy, 39 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.8s 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 71 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 25 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 3770 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...