./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/css2003_true-unreach-call_true-termination.c.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_9e2b2cc6-6ebc-4a26-bad0-94156b342e7f/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_9e2b2cc6-6ebc-4a26-bad0-94156b342e7f/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_9e2b2cc6-6ebc-4a26-bad0-94156b342e7f/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_9e2b2cc6-6ebc-4a26-bad0-94156b342e7f/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/css2003_true-unreach-call_true-termination.c.i -s /tmp/vcloud-vcloud-master/worker/working_dir_9e2b2cc6-6ebc-4a26-bad0-94156b342e7f/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_9e2b2cc6-6ebc-4a26-bad0-94156b342e7f/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 88d33ff91b99a769018021c2f8754b39298cafbb ......................................................................................................................................................................................................................................................................................... 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 15:46:06,099 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 15:46:06,100 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 15:46:06,108 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 15:46:06,109 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 15:46:06,109 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 15:46:06,110 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 15:46:06,111 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 15:46:06,112 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 15:46:06,113 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 15:46:06,113 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 15:46:06,114 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 15:46:06,114 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 15:46:06,115 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 15:46:06,116 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 15:46:06,117 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 15:46:06,117 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 15:46:06,118 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 15:46:06,120 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 15:46:06,121 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 15:46:06,122 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 15:46:06,122 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 15:46:06,124 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 15:46:06,124 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 15:46:06,124 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 15:46:06,125 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 15:46:06,125 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 15:46:06,126 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 15:46:06,127 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 15:46:06,127 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 15:46:06,127 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 15:46:06,128 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 15:46:06,128 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 15:46:06,128 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 15:46:06,129 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 15:46:06,129 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 15:46:06,130 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_9e2b2cc6-6ebc-4a26-bad0-94156b342e7f/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-23 15:46:06,139 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 15:46:06,139 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 15:46:06,140 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 15:46:06,140 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 15:46:06,140 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 15:46:06,140 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 15:46:06,140 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 15:46:06,141 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-23 15:46:06,141 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 15:46:06,141 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 15:46:06,141 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-23 15:46:06,141 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-23 15:46:06,141 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 15:46:06,142 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 15:46:06,142 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 15:46:06,142 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 15:46:06,142 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 15:46:06,142 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 15:46:06,142 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 15:46:06,142 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 15:46:06,143 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 15:46:06,143 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 15:46:06,143 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 15:46:06,143 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 15:46:06,143 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 15:46:06,143 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 15:46:06,143 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 15:46:06,144 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 15:46:06,144 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 15:46:06,144 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 15:46:06,144 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 15:46:06,144 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 15:46:06,144 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 15:46:06,144 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-23 15:46:06,144 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 15:46:06,145 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 15:46:06,145 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-23 15:46:06,145 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_9e2b2cc6-6ebc-4a26-bad0-94156b342e7f/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 -> 88d33ff91b99a769018021c2f8754b39298cafbb [2018-11-23 15:46:06,170 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 15:46:06,178 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 15:46:06,181 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 15:46:06,182 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 15:46:06,183 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 15:46:06,183 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_9e2b2cc6-6ebc-4a26-bad0-94156b342e7f/bin-2019/utaipan/../../sv-benchmarks/c/loop-lit/css2003_true-unreach-call_true-termination.c.i [2018-11-23 15:46:06,221 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9e2b2cc6-6ebc-4a26-bad0-94156b342e7f/bin-2019/utaipan/data/1eda7e5b2/0acff67c92854de79e711cb3a487c7c5/FLAG6c8159673 [2018-11-23 15:46:06,530 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 15:46:06,530 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_9e2b2cc6-6ebc-4a26-bad0-94156b342e7f/sv-benchmarks/c/loop-lit/css2003_true-unreach-call_true-termination.c.i [2018-11-23 15:46:06,534 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9e2b2cc6-6ebc-4a26-bad0-94156b342e7f/bin-2019/utaipan/data/1eda7e5b2/0acff67c92854de79e711cb3a487c7c5/FLAG6c8159673 [2018-11-23 15:46:06,543 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_9e2b2cc6-6ebc-4a26-bad0-94156b342e7f/bin-2019/utaipan/data/1eda7e5b2/0acff67c92854de79e711cb3a487c7c5 [2018-11-23 15:46:06,545 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 15:46:06,546 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 15:46:06,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 15:46:06,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 15:46:06,549 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 15:46:06,549 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:46:06" (1/1) ... [2018-11-23 15:46:06,551 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33c486bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:06, skipping insertion in model container [2018-11-23 15:46:06,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:46:06" (1/1) ... [2018-11-23 15:46:06,557 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 15:46:06,570 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 15:46:06,675 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 15:46:06,678 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 15:46:06,687 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 15:46:06,696 INFO L195 MainTranslator]: Completed translation [2018-11-23 15:46:06,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:06 WrapperNode [2018-11-23 15:46:06,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 15:46:06,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 15:46:06,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 15:46:06,697 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 15:46:06,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:06" (1/1) ... [2018-11-23 15:46:06,706 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:06" (1/1) ... [2018-11-23 15:46:06,710 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 15:46:06,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 15:46:06,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 15:46:06,710 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 15:46:06,716 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:06" (1/1) ... [2018-11-23 15:46:06,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:06" (1/1) ... [2018-11-23 15:46:06,716 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:06" (1/1) ... [2018-11-23 15:46:06,717 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:06" (1/1) ... [2018-11-23 15:46:06,719 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:06" (1/1) ... [2018-11-23 15:46:06,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:06" (1/1) ... [2018-11-23 15:46:06,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:06" (1/1) ... [2018-11-23 15:46:06,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 15:46:06,724 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 15:46:06,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 15:46:06,724 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 15:46:06,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9e2b2cc6-6ebc-4a26-bad0-94156b342e7f/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 [2018-11-23 15:46:06,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 15:46:06,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 15:46:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 15:46:06,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 15:46:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 15:46:06,802 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 15:46:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-23 15:46:06,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-23 15:46:06,891 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 15:46:06,891 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-23 15:46:06,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:46:06 BoogieIcfgContainer [2018-11-23 15:46:06,892 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 15:46:06,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 15:46:06,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 15:46:06,894 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 15:46:06,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:46:06" (1/3) ... [2018-11-23 15:46:06,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@244577db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:46:06, skipping insertion in model container [2018-11-23 15:46:06,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:06" (2/3) ... [2018-11-23 15:46:06,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@244577db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:46:06, skipping insertion in model container [2018-11-23 15:46:06,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:46:06" (3/3) ... [2018-11-23 15:46:06,897 INFO L112 eAbstractionObserver]: Analyzing ICFG css2003_true-unreach-call_true-termination.c.i [2018-11-23 15:46:06,902 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 15:46:06,907 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 15:46:06,915 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 15:46:06,935 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 15:46:06,935 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 15:46:06,935 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 15:46:06,935 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 15:46:06,935 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 15:46:06,935 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 15:46:06,935 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 15:46:06,935 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 15:46:06,948 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-11-23 15:46:06,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-23 15:46:06,951 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:46:06,951 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 15:46:06,953 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 15:46:06,956 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:46:06,956 INFO L82 PathProgramCache]: Analyzing trace with hash 576882593, now seen corresponding path program 1 times [2018-11-23 15:46:06,958 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 15:46:06,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:46:06,987 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:46:06,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:46:06,987 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 15:46:07,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:46:07,125 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 15:46:07,127 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 15:46:07,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-23 15:46:07,127 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 15:46:07,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-23 15:46:07,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-23 15:46:07,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-11-23 15:46:07,139 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 7 states. [2018-11-23 15:46:07,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:46:07,236 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2018-11-23 15:46:07,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 15:46:07,237 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2018-11-23 15:46:07,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:46:07,241 INFO L225 Difference]: With dead ends: 33 [2018-11-23 15:46:07,241 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 15:46:07,244 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-11-23 15:46:07,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 15:46:07,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 15:46:07,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 15:46:07,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 15:46:07,259 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2018-11-23 15:46:07,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:46:07,260 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 15:46:07,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-23 15:46:07,260 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 15:46:07,260 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 15:46:07,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 15:46:07,342 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-23 15:46:07,343 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 15:46:07,343 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 15:46:07,343 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 15:46:07,343 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 15:46:07,343 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 15:46:07,343 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 10 23) the Hoare annotation is: true [2018-11-23 15:46:07,343 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 10 23) no Hoare annotation was computed. [2018-11-23 15:46:07,343 INFO L444 ceAbstractionStarter]: At program point L20(line 20) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~k~0))) (and (<= .cse0 2) (<= 2 main_~i~0) (<= 1 .cse0))) [2018-11-23 15:46:07,344 INFO L444 ceAbstractionStarter]: At program point L20-1(lines 16 21) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~k~0))) (and (<= .cse0 2) (<= 1 main_~i~0) (<= 1 .cse0))) [2018-11-23 15:46:07,344 INFO L448 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-11-23 15:46:07,344 INFO L448 ceAbstractionStarter]: For program point L16-2(lines 16 21) no Hoare annotation was computed. [2018-11-23 15:46:07,344 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 10 23) no Hoare annotation was computed. [2018-11-23 15:46:07,344 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-23 15:46:07,344 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-23 15:46:07,344 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-23 15:46:07,344 INFO L448 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-23 15:46:07,344 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-23 15:46:07,345 INFO L448 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-23 15:46:07,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:46:07 BoogieIcfgContainer [2018-11-23 15:46:07,357 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 15:46:07,357 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 15:46:07,358 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 15:46:07,358 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 15:46:07,358 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:46:06" (3/4) ... [2018-11-23 15:46:07,361 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 15:46:07,367 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 15:46:07,367 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 15:46:07,367 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-23 15:46:07,371 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-23 15:46:07,371 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-23 15:46:07,371 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 15:46:07,398 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_9e2b2cc6-6ebc-4a26-bad0-94156b342e7f/bin-2019/utaipan/witness.graphml [2018-11-23 15:46:07,398 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 15:46:07,399 INFO L168 Benchmark]: Toolchain (without parser) took 853.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 960.2 MB in the beginning and 1.1 GB in the end (delta: -139.3 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. [2018-11-23 15:46:07,400 INFO L168 Benchmark]: CDTParser took 0.17 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. [2018-11-23 15:46:07,401 INFO L168 Benchmark]: CACSL2BoogieTranslator took 150.29 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 15:46:07,401 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.75 ms. Allocated memory is still 1.0 GB. Free memory is still 949.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 15:46:07,402 INFO L168 Benchmark]: Boogie Preprocessor took 13.30 ms. Allocated memory is still 1.0 GB. Free memory was 949.5 MB in the beginning and 946.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 15:46:07,402 INFO L168 Benchmark]: RCFGBuilder took 168.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -194.7 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-11-23 15:46:07,402 INFO L168 Benchmark]: TraceAbstraction took 464.63 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: 42.0 MB). Peak memory consumption was 42.0 MB. Max. memory is 11.5 GB. [2018-11-23 15:46:07,403 INFO L168 Benchmark]: Witness Printer took 41.09 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 15:46:07,405 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 150.29 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 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 12.75 ms. Allocated memory is still 1.0 GB. Free memory is still 949.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.30 ms. Allocated memory is still 1.0 GB. Free memory was 949.5 MB in the beginning and 946.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 168.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -194.7 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 464.63 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: 42.0 MB). Peak memory consumption was 42.0 MB. Max. memory is 11.5 GB. * Witness Printer took 41.09 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: - PositiveResult [Line: 5]: 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: 16]: Loop Invariant Derived loop invariant: (i + k <= 2 && 1 <= i) && 1 <= i + k - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. SAFE Result, 0.4s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 15 SDtfs, 14 SDslu, 48 SDs, 0 SdLazy, 25 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 11 NumberOfFragments, 33 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 18 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 460 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...