./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/gsv2008_true-unreach-call_true-termination.c.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_08b3824b-95b9-4ce6-8792-d2519f50fc20/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_08b3824b-95b9-4ce6-8792-d2519f50fc20/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_08b3824b-95b9-4ce6-8792-d2519f50fc20/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_08b3824b-95b9-4ce6-8792-d2519f50fc20/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/gsv2008_true-unreach-call_true-termination.c.i -s /tmp/vcloud-vcloud-master/worker/working_dir_08b3824b-95b9-4ce6-8792-d2519f50fc20/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_08b3824b-95b9-4ce6-8792-d2519f50fc20/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 225f0ddf9f4fc2bb07a34316827f4c052bf2e72a ...................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 10:58:43,155 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 10:58:43,156 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 10:58:43,162 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 10:58:43,162 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 10:58:43,162 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 10:58:43,163 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 10:58:43,164 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 10:58:43,165 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 10:58:43,165 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 10:58:43,166 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 10:58:43,166 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 10:58:43,166 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 10:58:43,167 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 10:58:43,167 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 10:58:43,168 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 10:58:43,168 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 10:58:43,169 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 10:58:43,170 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 10:58:43,171 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 10:58:43,171 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 10:58:43,172 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 10:58:43,173 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 10:58:43,173 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 10:58:43,173 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 10:58:43,174 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 10:58:43,174 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 10:58:43,175 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 10:58:43,175 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 10:58:43,176 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 10:58:43,176 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 10:58:43,176 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 10:58:43,176 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 10:58:43,176 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 10:58:43,177 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 10:58:43,177 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 10:58:43,178 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_08b3824b-95b9-4ce6-8792-d2519f50fc20/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 10:58:43,185 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 10:58:43,185 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 10:58:43,185 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 10:58:43,186 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 10:58:43,186 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 10:58:43,186 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 10:58:43,186 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 10:58:43,186 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 10:58:43,186 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 10:58:43,186 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 10:58:43,186 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 10:58:43,186 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 10:58:43,186 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 10:58:43,187 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 10:58:43,187 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 10:58:43,187 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 10:58:43,187 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 10:58:43,187 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 10:58:43,187 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 10:58:43,187 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 10:58:43,187 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 10:58:43,188 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 10:58:43,188 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 10:58:43,188 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 10:58:43,188 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 10:58:43,188 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 10:58:43,188 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 10:58:43,188 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 10:58:43,188 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 10:58:43,188 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 10:58:43,188 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 10:58:43,188 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 10:58:43,189 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 10:58:43,189 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 10:58:43,189 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 10:58:43,189 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 10:58:43,189 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_08b3824b-95b9-4ce6-8792-d2519f50fc20/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 -> 225f0ddf9f4fc2bb07a34316827f4c052bf2e72a [2018-12-09 10:58:43,206 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 10:58:43,213 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 10:58:43,214 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 10:58:43,215 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 10:58:43,216 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 10:58:43,216 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_08b3824b-95b9-4ce6-8792-d2519f50fc20/bin-2019/utaipan/../../sv-benchmarks/c/loop-lit/gsv2008_true-unreach-call_true-termination.c.i [2018-12-09 10:58:43,251 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_08b3824b-95b9-4ce6-8792-d2519f50fc20/bin-2019/utaipan/data/1064bb804/0d2cc9b79a904063bc030b39a2c487ee/FLAGcb4a92a02 [2018-12-09 10:58:43,599 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 10:58:43,599 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_08b3824b-95b9-4ce6-8792-d2519f50fc20/sv-benchmarks/c/loop-lit/gsv2008_true-unreach-call_true-termination.c.i [2018-12-09 10:58:43,603 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_08b3824b-95b9-4ce6-8792-d2519f50fc20/bin-2019/utaipan/data/1064bb804/0d2cc9b79a904063bc030b39a2c487ee/FLAGcb4a92a02 [2018-12-09 10:58:43,986 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_08b3824b-95b9-4ce6-8792-d2519f50fc20/bin-2019/utaipan/data/1064bb804/0d2cc9b79a904063bc030b39a2c487ee [2018-12-09 10:58:43,988 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 10:58:43,989 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 10:58:43,990 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 10:58:43,990 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 10:58:43,993 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 10:58:43,993 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:58:43" (1/1) ... [2018-12-09 10:58:43,995 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73973e64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:58:43, skipping insertion in model container [2018-12-09 10:58:43,995 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:58:43" (1/1) ... [2018-12-09 10:58:44,000 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 10:58:44,010 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 10:58:44,101 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 10:58:44,103 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 10:58:44,111 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 10:58:44,119 INFO L195 MainTranslator]: Completed translation [2018-12-09 10:58:44,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:58:44 WrapperNode [2018-12-09 10:58:44,119 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 10:58:44,120 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 10:58:44,120 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 10:58:44,120 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 10:58:44,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:58:44" (1/1) ... [2018-12-09 10:58:44,127 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:58:44" (1/1) ... [2018-12-09 10:58:44,131 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 10:58:44,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 10:58:44,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 10:58:44,131 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 10:58:44,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:58:44" (1/1) ... [2018-12-09 10:58:44,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:58:44" (1/1) ... [2018-12-09 10:58:44,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:58:44" (1/1) ... [2018-12-09 10:58:44,137 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:58:44" (1/1) ... [2018-12-09 10:58:44,139 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:58:44" (1/1) ... [2018-12-09 10:58:44,142 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:58:44" (1/1) ... [2018-12-09 10:58:44,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:58:44" (1/1) ... [2018-12-09 10:58:44,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 10:58:44,143 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 10:58:44,143 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 10:58:44,143 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 10:58:44,144 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:58:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08b3824b-95b9-4ce6-8792-d2519f50fc20/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 [2018-12-09 10:58:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 10:58:44,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 10:58:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 10:58:44,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 10:58:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 10:58:44,210 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 10:58:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-09 10:58:44,210 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-09 10:58:44,301 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 10:58:44,301 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-09 10:58:44,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:58:44 BoogieIcfgContainer [2018-12-09 10:58:44,302 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 10:58:44,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 10:58:44,302 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 10:58:44,304 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 10:58:44,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 10:58:43" (1/3) ... [2018-12-09 10:58:44,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@297921c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:58:44, skipping insertion in model container [2018-12-09 10:58:44,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:58:44" (2/3) ... [2018-12-09 10:58:44,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@297921c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:58:44, skipping insertion in model container [2018-12-09 10:58:44,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:58:44" (3/3) ... [2018-12-09 10:58:44,306 INFO L112 eAbstractionObserver]: Analyzing ICFG gsv2008_true-unreach-call_true-termination.c.i [2018-12-09 10:58:44,312 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 10:58:44,317 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 10:58:44,326 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 10:58:44,344 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 10:58:44,344 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 10:58:44,344 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 10:58:44,345 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 10:58:44,345 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 10:58:44,345 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 10:58:44,345 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 10:58:44,345 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 10:58:44,355 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-12-09 10:58:44,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-09 10:58:44,359 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 10:58:44,359 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 10:58:44,360 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 10:58:44,364 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:58:44,364 INFO L82 PathProgramCache]: Analyzing trace with hash 578729635, now seen corresponding path program 1 times [2018-12-09 10:58:44,365 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 10:58:44,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:58:44,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 10:58:44,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:58:44,395 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 10:58:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:58:44,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 10:58:44,432 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 10:58:44,432 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 10:58:44,432 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 10:58:44,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 10:58:44,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 10:58:44,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 10:58:44,443 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-12-09 10:58:44,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 10:58:44,455 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2018-12-09 10:58:44,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 10:58:44,456 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-12-09 10:58:44,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 10:58:44,460 INFO L225 Difference]: With dead ends: 31 [2018-12-09 10:58:44,460 INFO L226 Difference]: Without dead ends: 12 [2018-12-09 10:58:44,462 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 10:58:44,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-12-09 10:58:44,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-12-09 10:58:44,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-12-09 10:58:44,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-12-09 10:58:44,482 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11 [2018-12-09 10:58:44,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 10:58:44,482 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-12-09 10:58:44,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 10:58:44,482 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-12-09 10:58:44,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-09 10:58:44,482 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 10:58:44,483 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 10:58:44,483 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 10:58:44,483 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:58:44,483 INFO L82 PathProgramCache]: Analyzing trace with hash 575035551, now seen corresponding path program 1 times [2018-12-09 10:58:44,483 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 10:58:44,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:58:44,484 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 10:58:44,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:58:44,484 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 10:58:44,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:58:44,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 10:58:44,504 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 10:58:44,504 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 10:58:44,505 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 10:58:44,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 10:58:44,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 10:58:44,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 10:58:44,506 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2018-12-09 10:58:44,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 10:58:44,512 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-12-09 10:58:44,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 10:58:44,513 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-12-09 10:58:44,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 10:58:44,513 INFO L225 Difference]: With dead ends: 18 [2018-12-09 10:58:44,514 INFO L226 Difference]: Without dead ends: 13 [2018-12-09 10:58:44,514 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 10:58:44,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-12-09 10:58:44,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-12-09 10:58:44,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-12-09 10:58:44,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-12-09 10:58:44,516 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-12-09 10:58:44,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 10:58:44,517 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-12-09 10:58:44,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 10:58:44,517 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-12-09 10:58:44,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-09 10:58:44,517 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 10:58:44,517 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 10:58:44,518 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 10:58:44,518 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:58:44,518 INFO L82 PathProgramCache]: Analyzing trace with hash 681770644, now seen corresponding path program 1 times [2018-12-09 10:58:44,518 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 10:58:44,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:58:44,519 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 10:58:44,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:58:44,519 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 10:58:44,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:58:44,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 10:58:44,566 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 10:58:44,566 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 10:58:44,566 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 13 with the following transitions: [2018-12-09 10:58:44,567 INFO L205 CegarAbsIntRunner]: [0], [4], [8], [15], [17], [24], [27], [29], [35], [36], [37], [39] [2018-12-09 10:58:44,586 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 10:58:44,586 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 10:58:44,656 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 10:58:44,657 INFO L272 AbstractInterpreter]: Visited 12 different actions 14 times. Merged at 1 different actions 1 times. Never widened. Performed 40 root evaluator evaluations with a maximum evaluation depth of 4. Performed 40 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 1 fixpoints after 1 different actions. Largest state had 4 variables. [2018-12-09 10:58:44,662 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:58:44,662 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 10:58:44,662 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 10:58:44,663 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08b3824b-95b9-4ce6-8792-d2519f50fc20/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 10:58:44,672 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 10:58:44,672 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 10:58:44,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:58:44,684 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 10:58:44,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 10:58:44,726 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 10:58:44,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 10:58:44,784 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-12-09 10:58:44,784 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7] total 13 [2018-12-09 10:58:44,784 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 10:58:44,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 10:58:44,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 10:58:44,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2018-12-09 10:58:44,785 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 6 states. [2018-12-09 10:58:44,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 10:58:44,811 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-12-09 10:58:44,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 10:58:44,811 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2018-12-09 10:58:44,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 10:58:44,812 INFO L225 Difference]: With dead ends: 13 [2018-12-09 10:58:44,812 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 10:58:44,812 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2018-12-09 10:58:44,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 10:58:44,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 10:58:44,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 10:58:44,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 10:58:44,813 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2018-12-09 10:58:44,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 10:58:44,813 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 10:58:44,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 10:58:44,813 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 10:58:44,813 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 10:58:44,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-09 10:58:44,831 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-09 10:58:44,831 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-09 10:58:44,831 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-09 10:58:44,832 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-09 10:58:44,832 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-09 10:58:44,832 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-09 10:58:44,832 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 10 21) the Hoare annotation is: true [2018-12-09 10:58:44,832 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 10 21) no Hoare annotation was computed. [2018-12-09 10:58:44,832 INFO L448 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2018-12-09 10:58:44,832 INFO L448 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-12-09 10:58:44,832 INFO L444 ceAbstractionStarter]: At program point L15-2(lines 15 18) the Hoare annotation is: (or (<= (+ main_~x~0 50) 0) (<= (+ main_~x~0 2) main_~y~0)) [2018-12-09 10:58:44,832 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 10 21) no Hoare annotation was computed. [2018-12-09 10:58:44,832 INFO L444 ceAbstractionStarter]: At program point L15-3(lines 15 18) the Hoare annotation is: (and (<= (+ main_~x~0 2) main_~y~0) (<= 2 main_~y~0)) [2018-12-09 10:58:44,832 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-12-09 10:58:44,832 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-12-09 10:58:44,833 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-12-09 10:58:44,833 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-12-09 10:58:44,833 INFO L448 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-12-09 10:58:44,833 INFO L448 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-12-09 10:58:44,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 10:58:44 BoogieIcfgContainer [2018-12-09 10:58:44,841 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 10:58:44,841 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 10:58:44,841 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 10:58:44,841 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 10:58:44,842 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:58:44" (3/4) ... [2018-12-09 10:58:44,844 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 10:58:44,847 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 10:58:44,848 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 10:58:44,848 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-12-09 10:58:44,850 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-12-09 10:58:44,850 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-12-09 10:58:44,850 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 10:58:44,874 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_08b3824b-95b9-4ce6-8792-d2519f50fc20/bin-2019/utaipan/witness.graphml [2018-12-09 10:58:44,874 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 10:58:44,874 INFO L168 Benchmark]: Toolchain (without parser) took 885.43 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 65.0 MB). Free memory was 955.1 MB in the beginning and 960.2 MB in the end (delta: -5.1 MB). Peak memory consumption was 59.9 MB. Max. memory is 11.5 GB. [2018-12-09 10:58:44,875 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 981.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 10:58:44,875 INFO L168 Benchmark]: CACSL2BoogieTranslator took 129.26 ms. Allocated memory is still 1.0 GB. Free memory was 955.1 MB in the beginning and 944.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 10:58:44,876 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.36 ms. Allocated memory is still 1.0 GB. Free memory is still 944.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 10:58:44,876 INFO L168 Benchmark]: Boogie Preprocessor took 11.65 ms. Allocated memory is still 1.0 GB. Free memory is still 944.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 10:58:44,876 INFO L168 Benchmark]: RCFGBuilder took 158.66 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 65.0 MB). Free memory was 944.3 MB in the beginning and 1.0 GB in the end (delta: -99.9 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. [2018-12-09 10:58:44,876 INFO L168 Benchmark]: TraceAbstraction took 538.77 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 960.2 MB in the end (delta: 84.1 MB). Peak memory consumption was 84.1 MB. Max. memory is 11.5 GB. [2018-12-09 10:58:44,877 INFO L168 Benchmark]: Witness Printer took 32.88 ms. Allocated memory is still 1.1 GB. Free memory is still 960.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 10:58:44,878 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 981.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 129.26 ms. Allocated memory is still 1.0 GB. Free memory was 955.1 MB in the beginning and 944.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.36 ms. Allocated memory is still 1.0 GB. Free memory is still 944.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.65 ms. Allocated memory is still 1.0 GB. Free memory is still 944.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 158.66 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 65.0 MB). Free memory was 944.3 MB in the beginning and 1.0 GB in the end (delta: -99.9 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 538.77 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 960.2 MB in the end (delta: 84.1 MB). Peak memory consumption was 84.1 MB. Max. memory is 11.5 GB. * Witness Printer took 32.88 ms. Allocated memory is still 1.1 GB. Free memory is still 960.2 MB. 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: 15]: Loop Invariant Derived loop invariant: x + 50 <= 0 || x + 2 <= y - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. SAFE Result, 0.4s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 39 SDtfs, 2 SDslu, 33 SDs, 0 SdLazy, 18 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 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, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 11 NumberOfFragments, 25 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 53 ConstructedInterpolants, 0 QuantifiedInterpolants, 1105 SizeOfPredicates, 5 NumberOfNonLiveVariables, 33 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 2/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...