./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id2_b5_o10_true-unreach-call_true-termination_true-no-overflow.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_66c324bd-4ad6-48a8-84c6-10fcf0acfa48/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_66c324bd-4ad6-48a8-84c6-10fcf0acfa48/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_66c324bd-4ad6-48a8-84c6-10fcf0acfa48/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_66c324bd-4ad6-48a8-84c6-10fcf0acfa48/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/id2_b5_o10_true-unreach-call_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_66c324bd-4ad6-48a8-84c6-10fcf0acfa48/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_66c324bd-4ad6-48a8-84c6-10fcf0acfa48/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 6f330f622534898bf170bbd5a7ac37bee3deb574 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 05:43:11,167 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 05:43:11,168 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 05:43:11,175 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 05:43:11,175 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 05:43:11,176 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 05:43:11,176 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 05:43:11,178 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 05:43:11,179 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 05:43:11,179 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 05:43:11,180 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 05:43:11,180 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 05:43:11,181 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 05:43:11,182 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 05:43:11,183 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 05:43:11,183 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 05:43:11,184 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 05:43:11,185 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 05:43:11,186 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 05:43:11,187 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 05:43:11,188 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 05:43:11,189 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 05:43:11,191 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 05:43:11,191 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 05:43:11,191 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 05:43:11,192 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 05:43:11,192 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 05:43:11,193 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 05:43:11,193 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 05:43:11,194 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 05:43:11,194 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 05:43:11,195 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 05:43:11,195 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 05:43:11,195 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 05:43:11,196 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 05:43:11,196 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 05:43:11,197 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_66c324bd-4ad6-48a8-84c6-10fcf0acfa48/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-23 05:43:11,207 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 05:43:11,207 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 05:43:11,208 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 05:43:11,208 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 05:43:11,208 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 05:43:11,208 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 05:43:11,208 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 05:43:11,208 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-23 05:43:11,209 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 05:43:11,209 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 05:43:11,209 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-23 05:43:11,209 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-23 05:43:11,209 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 05:43:11,210 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 05:43:11,210 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 05:43:11,210 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 05:43:11,210 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 05:43:11,210 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 05:43:11,210 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 05:43:11,211 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 05:43:11,211 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 05:43:11,211 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 05:43:11,211 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 05:43:11,211 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 05:43:11,211 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 05:43:11,211 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 05:43:11,212 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 05:43:11,212 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 05:43:11,212 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 05:43:11,212 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 05:43:11,212 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 05:43:11,212 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 05:43:11,213 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 05:43:11,213 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-23 05:43:11,213 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 05:43:11,213 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 05:43:11,213 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-23 05:43:11,213 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_66c324bd-4ad6-48a8-84c6-10fcf0acfa48/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 -> 6f330f622534898bf170bbd5a7ac37bee3deb574 [2018-11-23 05:43:11,236 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 05:43:11,244 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 05:43:11,247 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 05:43:11,249 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 05:43:11,249 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 05:43:11,249 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_66c324bd-4ad6-48a8-84c6-10fcf0acfa48/bin-2019/utaipan/../../sv-benchmarks/c/recursive-simple/id2_b5_o10_true-unreach-call_true-termination_true-no-overflow.c [2018-11-23 05:43:11,291 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_66c324bd-4ad6-48a8-84c6-10fcf0acfa48/bin-2019/utaipan/data/8690a6995/40f7de04f5364cad990b31b83ee793a3/FLAG576f96a9d [2018-11-23 05:43:11,712 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 05:43:11,712 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_66c324bd-4ad6-48a8-84c6-10fcf0acfa48/sv-benchmarks/c/recursive-simple/id2_b5_o10_true-unreach-call_true-termination_true-no-overflow.c [2018-11-23 05:43:11,717 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_66c324bd-4ad6-48a8-84c6-10fcf0acfa48/bin-2019/utaipan/data/8690a6995/40f7de04f5364cad990b31b83ee793a3/FLAG576f96a9d [2018-11-23 05:43:11,725 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_66c324bd-4ad6-48a8-84c6-10fcf0acfa48/bin-2019/utaipan/data/8690a6995/40f7de04f5364cad990b31b83ee793a3 [2018-11-23 05:43:11,727 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 05:43:11,728 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 05:43:11,729 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 05:43:11,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 05:43:11,731 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 05:43:11,732 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:43:11" (1/1) ... [2018-11-23 05:43:11,733 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 05:43:11, skipping insertion in model container [2018-11-23 05:43:11,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:43:11" (1/1) ... [2018-11-23 05:43:11,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 05:43:11,752 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 05:43:11,861 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 05:43:11,864 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 05:43:11,874 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 05:43:11,882 INFO L195 MainTranslator]: Completed translation [2018-11-23 05:43:11,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:43:11 WrapperNode [2018-11-23 05:43:11,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 05:43:11,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 05:43:11,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 05:43:11,883 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 05:43:11,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:43:11" (1/1) ... [2018-11-23 05:43:11,891 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:43:11" (1/1) ... [2018-11-23 05:43:11,895 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 05:43:11,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 05:43:11,895 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 05:43:11,895 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 05:43:11,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:43:11" (1/1) ... [2018-11-23 05:43:11,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:43:11" (1/1) ... [2018-11-23 05:43:11,901 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:43:11" (1/1) ... [2018-11-23 05:43:11,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:43:11" (1/1) ... [2018-11-23 05:43:11,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:43:11" (1/1) ... [2018-11-23 05:43:11,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:43:11" (1/1) ... [2018-11-23 05:43:11,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:43:11" (1/1) ... [2018-11-23 05:43:11,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 05:43:11,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 05:43:11,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 05:43:11,907 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 05:43:11,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:43:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_66c324bd-4ad6-48a8-84c6-10fcf0acfa48/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 05:43:11,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 05:43:11,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 05:43:11,981 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2018-11-23 05:43:11,981 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2018-11-23 05:43:11,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 05:43:11,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 05:43:11,981 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 05:43:11,981 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 05:43:11,981 INFO L130 BoogieDeclarations]: Found specification of procedure id [2018-11-23 05:43:11,981 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2018-11-23 05:43:12,076 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 05:43:12,076 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-23 05:43:12,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:43:12 BoogieIcfgContainer [2018-11-23 05:43:12,076 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 05:43:12,077 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 05:43:12,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 05:43:12,079 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 05:43:12,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:43:11" (1/3) ... [2018-11-23 05:43:12,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb92667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:43:12, skipping insertion in model container [2018-11-23 05:43:12,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:43:11" (2/3) ... [2018-11-23 05:43:12,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb92667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:43:12, skipping insertion in model container [2018-11-23 05:43:12,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:43:12" (3/3) ... [2018-11-23 05:43:12,081 INFO L112 eAbstractionObserver]: Analyzing ICFG id2_b5_o10_true-unreach-call_true-termination_true-no-overflow.c [2018-11-23 05:43:12,087 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 05:43:12,092 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 05:43:12,101 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 05:43:12,118 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 05:43:12,118 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 05:43:12,118 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 05:43:12,119 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 05:43:12,119 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 05:43:12,119 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 05:43:12,119 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 05:43:12,119 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 05:43:12,129 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-11-23 05:43:12,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-23 05:43:12,132 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:43:12,132 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:43:12,134 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:43:12,137 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:43:12,137 INFO L82 PathProgramCache]: Analyzing trace with hash 128923731, now seen corresponding path program 1 times [2018-11-23 05:43:12,138 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 05:43:12,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:43:12,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:43:12,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:43:12,173 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 05:43:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:43:12,285 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 05:43:12,286 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 05:43:12,286 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 05:43:12,286 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 05:43:12,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 05:43:12,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 05:43:12,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 05:43:12,298 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2018-11-23 05:43:12,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:43:12,333 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2018-11-23 05:43:12,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 05:43:12,339 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-11-23 05:43:12,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:43:12,348 INFO L225 Difference]: With dead ends: 40 [2018-11-23 05:43:12,348 INFO L226 Difference]: Without dead ends: 26 [2018-11-23 05:43:12,351 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 05:43:12,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-23 05:43:12,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-11-23 05:43:12,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-23 05:43:12,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2018-11-23 05:43:12,379 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 13 [2018-11-23 05:43:12,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:43:12,379 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2018-11-23 05:43:12,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 05:43:12,380 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2018-11-23 05:43:12,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-23 05:43:12,382 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:43:12,383 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:43:12,383 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:43:12,383 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:43:12,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1945633833, now seen corresponding path program 1 times [2018-11-23 05:43:12,383 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 05:43:12,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:43:12,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:43:12,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:43:12,384 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 05:43:12,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:43:12,474 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 05:43:12,474 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 05:43:12,474 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 05:43:12,474 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 05:43:12,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 05:43:12,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 05:43:12,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 05:43:12,476 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 5 states. [2018-11-23 05:43:12,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:43:12,511 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2018-11-23 05:43:12,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 05:43:12,512 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-11-23 05:43:12,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:43:12,513 INFO L225 Difference]: With dead ends: 44 [2018-11-23 05:43:12,513 INFO L226 Difference]: Without dead ends: 32 [2018-11-23 05:43:12,513 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 05:43:12,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-23 05:43:12,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2018-11-23 05:43:12,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-23 05:43:12,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2018-11-23 05:43:12,519 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 20 [2018-11-23 05:43:12,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:43:12,519 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2018-11-23 05:43:12,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 05:43:12,519 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2018-11-23 05:43:12,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-23 05:43:12,520 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:43:12,520 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:43:12,520 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:43:12,520 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:43:12,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1974262984, now seen corresponding path program 1 times [2018-11-23 05:43:12,520 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 05:43:12,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:43:12,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:43:12,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:43:12,521 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 05:43:12,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:43:12,628 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 05:43:12,628 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 05:43:12,629 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-23 05:43:12,629 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 05:43:12,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-23 05:43:12,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-23 05:43:12,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-23 05:43:12,630 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 8 states. [2018-11-23 05:43:12,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:43:12,675 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2018-11-23 05:43:12,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-23 05:43:12,675 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2018-11-23 05:43:12,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:43:12,676 INFO L225 Difference]: With dead ends: 36 [2018-11-23 05:43:12,676 INFO L226 Difference]: Without dead ends: 32 [2018-11-23 05:43:12,677 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-11-23 05:43:12,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-23 05:43:12,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2018-11-23 05:43:12,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-23 05:43:12,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2018-11-23 05:43:12,681 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 20 [2018-11-23 05:43:12,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:43:12,681 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2018-11-23 05:43:12,681 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-23 05:43:12,681 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2018-11-23 05:43:12,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-23 05:43:12,682 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:43:12,682 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:43:12,682 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:43:12,683 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:43:12,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1423155149, now seen corresponding path program 1 times [2018-11-23 05:43:12,683 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 05:43:12,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:43:12,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:43:12,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:43:12,684 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 05:43:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:43:12,752 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 05:43:12,752 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 05:43:12,752 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 05:43:12,752 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 05:43:12,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 05:43:12,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 05:43:12,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 05:43:12,753 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2018-11-23 05:43:12,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:43:12,773 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2018-11-23 05:43:12,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 05:43:12,773 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2018-11-23 05:43:12,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:43:12,774 INFO L225 Difference]: With dead ends: 48 [2018-11-23 05:43:12,774 INFO L226 Difference]: Without dead ends: 36 [2018-11-23 05:43:12,775 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 05:43:12,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-23 05:43:12,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2018-11-23 05:43:12,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-23 05:43:12,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2018-11-23 05:43:12,780 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 27 [2018-11-23 05:43:12,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:43:12,781 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2018-11-23 05:43:12,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 05:43:12,781 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2018-11-23 05:43:12,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-23 05:43:12,781 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:43:12,781 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:43:12,781 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:43:12,781 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:43:12,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1226641644, now seen corresponding path program 1 times [2018-11-23 05:43:12,782 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 05:43:12,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:43:12,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:43:12,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:43:12,783 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 05:43:12,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:43:12,849 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 05:43:12,850 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 05:43:12,850 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 05:43:12,850 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 05:43:12,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 05:43:12,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 05:43:12,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 05:43:12,850 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 5 states. [2018-11-23 05:43:12,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:43:12,859 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2018-11-23 05:43:12,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 05:43:12,860 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2018-11-23 05:43:12,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:43:12,860 INFO L225 Difference]: With dead ends: 40 [2018-11-23 05:43:12,860 INFO L226 Difference]: Without dead ends: 36 [2018-11-23 05:43:12,861 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 05:43:12,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-23 05:43:12,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2018-11-23 05:43:12,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-23 05:43:12,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2018-11-23 05:43:12,865 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 27 [2018-11-23 05:43:12,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:43:12,865 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2018-11-23 05:43:12,865 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 05:43:12,865 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2018-11-23 05:43:12,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-23 05:43:12,866 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:43:12,866 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:43:12,866 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:43:12,866 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:43:12,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1255270795, now seen corresponding path program 1 times [2018-11-23 05:43:12,866 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 05:43:12,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:43:12,867 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:43:12,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:43:12,867 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 05:43:12,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:43:13,031 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 05:43:13,032 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:43:13,032 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 05:43:13,032 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 28 with the following transitions: [2018-11-23 05:43:13,034 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [7], [11], [12], [16], [18], [21], [23], [29], [32], [33], [35], [39], [40], [41], [42], [43], [44], [45], [47], [48], [49], [50] [2018-11-23 05:43:13,056 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 05:43:13,057 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 05:43:13,194 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 05:43:13,195 INFO L272 AbstractInterpreter]: Visited 25 different actions 61 times. Merged at 10 different actions 16 times. Never widened. Performed 110 root evaluator evaluations with a maximum evaluation depth of 4. Performed 110 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 1 fixpoints after 1 different actions. Largest state had 5 variables. [2018-11-23 05:43:13,200 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:43:13,201 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 05:43:13,201 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:43:13,201 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_66c324bd-4ad6-48a8-84c6-10fcf0acfa48/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 [2018-11-23 05:43:13,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:43:13,208 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 05:43:13,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:43:13,224 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:43:13,260 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 05:43:13,261 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 05:43:13,381 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 05:43:13,395 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-23 05:43:13,395 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [11, 11] total 15 [2018-11-23 05:43:13,396 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 05:43:13,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 05:43:13,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 05:43:13,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2018-11-23 05:43:13,396 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 5 states. [2018-11-23 05:43:13,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:43:13,402 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2018-11-23 05:43:13,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 05:43:13,402 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2018-11-23 05:43:13,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:43:13,402 INFO L225 Difference]: With dead ends: 34 [2018-11-23 05:43:13,403 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 05:43:13,403 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2018-11-23 05:43:13,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 05:43:13,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 05:43:13,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 05:43:13,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 05:43:13,403 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2018-11-23 05:43:13,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:43:13,404 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 05:43:13,404 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 05:43:13,404 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 05:43:13,404 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 05:43:13,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 05:43:13,417 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-23 05:43:13,417 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 05:43:13,417 INFO L448 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2018-11-23 05:43:13,417 INFO L451 ceAbstractionStarter]: At program point L16(line 16) the Hoare annotation is: true [2018-11-23 05:43:13,417 INFO L448 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-11-23 05:43:13,417 INFO L448 ceAbstractionStarter]: For program point L16-1(line 16) no Hoare annotation was computed. [2018-11-23 05:43:13,417 INFO L448 ceAbstractionStarter]: For program point id2EXIT(lines 14 19) no Hoare annotation was computed. [2018-11-23 05:43:13,417 INFO L451 ceAbstractionStarter]: At program point id2ENTRY(lines 14 19) the Hoare annotation is: true [2018-11-23 05:43:13,418 INFO L448 ceAbstractionStarter]: For program point id2FINAL(lines 14 19) no Hoare annotation was computed. [2018-11-23 05:43:13,418 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 05:43:13,418 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 05:43:13,418 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 05:43:13,418 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 05:43:13,418 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 21 27) the Hoare annotation is: true [2018-11-23 05:43:13,418 INFO L448 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-11-23 05:43:13,418 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 21 27) no Hoare annotation was computed. [2018-11-23 05:43:13,418 INFO L448 ceAbstractionStarter]: For program point L24(lines 24 26) no Hoare annotation was computed. [2018-11-23 05:43:13,418 INFO L451 ceAbstractionStarter]: At program point L23(line 23) the Hoare annotation is: true [2018-11-23 05:43:13,418 INFO L448 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2018-11-23 05:43:13,418 INFO L448 ceAbstractionStarter]: For program point L24-2(lines 21 27) no Hoare annotation was computed. [2018-11-23 05:43:13,418 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2018-11-23 05:43:13,418 INFO L448 ceAbstractionStarter]: For program point idFINAL(lines 7 12) no Hoare annotation was computed. [2018-11-23 05:43:13,418 INFO L448 ceAbstractionStarter]: For program point idEXIT(lines 7 12) no Hoare annotation was computed. [2018-11-23 05:43:13,419 INFO L448 ceAbstractionStarter]: For program point L10(line 10) no Hoare annotation was computed. [2018-11-23 05:43:13,419 INFO L451 ceAbstractionStarter]: At program point L9(line 9) the Hoare annotation is: true [2018-11-23 05:43:13,419 INFO L448 ceAbstractionStarter]: For program point L8(line 8) no Hoare annotation was computed. [2018-11-23 05:43:13,419 INFO L448 ceAbstractionStarter]: For program point L9-1(line 9) no Hoare annotation was computed. [2018-11-23 05:43:13,419 INFO L451 ceAbstractionStarter]: At program point idENTRY(lines 7 12) the Hoare annotation is: true [2018-11-23 05:43:13,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 05:43:13 BoogieIcfgContainer [2018-11-23 05:43:13,420 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 05:43:13,421 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 05:43:13,421 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 05:43:13,421 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 05:43:13,421 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:43:12" (3/4) ... [2018-11-23 05:43:13,423 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 05:43:13,427 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 05:43:13,427 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id2 [2018-11-23 05:43:13,427 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 05:43:13,427 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2018-11-23 05:43:13,430 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-23 05:43:13,430 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-23 05:43:13,430 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 05:43:13,455 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_66c324bd-4ad6-48a8-84c6-10fcf0acfa48/bin-2019/utaipan/witness.graphml [2018-11-23 05:43:13,455 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 05:43:13,456 INFO L168 Benchmark]: Toolchain (without parser) took 1728.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 958.1 MB in the beginning and 959.0 MB in the end (delta: -931.7 kB). Peak memory consumption was 144.3 MB. Max. memory is 11.5 GB. [2018-11-23 05:43:13,457 INFO L168 Benchmark]: CDTParser took 0.18 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 05:43:13,457 INFO L168 Benchmark]: CACSL2BoogieTranslator took 154.36 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 MB in the beginning and 947.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 05:43:13,457 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.81 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 944.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 05:43:13,457 INFO L168 Benchmark]: Boogie Preprocessor took 11.08 ms. Allocated memory is still 1.0 GB. Free memory is still 944.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 05:43:13,458 INFO L168 Benchmark]: RCFGBuilder took 169.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -184.3 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. [2018-11-23 05:43:13,458 INFO L168 Benchmark]: TraceAbstraction took 1343.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 962.3 MB in the end (delta: 166.7 MB). Peak memory consumption was 166.7 MB. Max. memory is 11.5 GB. [2018-11-23 05:43:13,459 INFO L168 Benchmark]: Witness Printer took 34.78 ms. Allocated memory is still 1.2 GB. Free memory was 962.3 MB in the beginning and 959.0 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-11-23 05:43:13,460 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 154.36 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 MB in the beginning and 947.3 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 11.81 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 944.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.08 ms. Allocated memory is still 1.0 GB. Free memory is still 944.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 169.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -184.3 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1343.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 962.3 MB in the end (delta: 166.7 MB). Peak memory consumption was 166.7 MB. Max. memory is 11.5 GB. * Witness Printer took 34.78 ms. Allocated memory is still 1.2 GB. Free memory was 962.3 MB in the beginning and 959.0 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 28 locations, 1 error locations. SAFE Result, 1.3s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 167 SDtfs, 8 SDslu, 549 SDs, 0 SdLazy, 70 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 58 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 8 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 11 PreInvPairs, 11 NumberOfFragments, 9 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 180 ConstructedInterpolants, 0 QuantifiedInterpolants, 11822 SizeOfPredicates, 3 NumberOfNonLiveVariables, 60 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 16/20 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...