./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/ldv-regression/test09_true-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_1ce8055c-889f-4c1c-ba58-f39b03d9d568/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_1ce8055c-889f-4c1c-ba58-f39b03d9d568/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_1ce8055c-889f-4c1c-ba58-f39b03d9d568/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_1ce8055c-889f-4c1c-ba58-f39b03d9d568/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test09_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_1ce8055c-889f-4c1c-ba58-f39b03d9d568/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_1ce8055c-889f-4c1c-ba58-f39b03d9d568/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 424e992eac0acb5e0901287d22a3c0d4a0554aed ................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 02:34:20,547 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 02:34:20,548 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 02:34:20,557 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 02:34:20,557 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 02:34:20,558 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 02:34:20,559 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 02:34:20,560 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 02:34:20,561 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 02:34:20,562 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 02:34:20,563 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 02:34:20,563 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 02:34:20,564 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 02:34:20,564 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 02:34:20,565 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 02:34:20,566 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 02:34:20,567 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 02:34:20,568 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 02:34:20,570 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 02:34:20,571 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 02:34:20,572 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 02:34:20,573 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 02:34:20,574 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 02:34:20,574 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 02:34:20,575 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 02:34:20,575 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 02:34:20,576 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 02:34:20,577 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 02:34:20,578 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 02:34:20,578 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 02:34:20,579 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 02:34:20,579 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 02:34:20,579 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 02:34:20,580 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 02:34:20,581 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 02:34:20,581 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 02:34:20,581 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_1ce8055c-889f-4c1c-ba58-f39b03d9d568/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-10 02:34:20,593 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 02:34:20,593 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 02:34:20,594 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 02:34:20,594 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 02:34:20,594 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 02:34:20,594 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 02:34:20,594 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-10 02:34:20,595 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 02:34:20,595 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-10 02:34:20,595 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-10 02:34:20,595 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 02:34:20,596 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 02:34:20,596 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 02:34:20,596 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 02:34:20,596 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 02:34:20,596 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 02:34:20,596 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 02:34:20,597 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 02:34:20,597 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 02:34:20,597 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 02:34:20,597 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 02:34:20,597 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 02:34:20,597 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 02:34:20,597 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 02:34:20,598 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 02:34:20,598 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 02:34:20,598 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 02:34:20,598 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 02:34:20,598 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 02:34:20,598 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 02:34:20,598 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-10 02:34:20,599 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 02:34:20,599 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 02:34:20,599 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-10 02:34:20,599 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_1ce8055c-889f-4c1c-ba58-f39b03d9d568/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 -> 424e992eac0acb5e0901287d22a3c0d4a0554aed [2018-11-10 02:34:20,625 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 02:34:20,635 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 02:34:20,638 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 02:34:20,639 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 02:34:20,639 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 02:34:20,640 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_1ce8055c-889f-4c1c-ba58-f39b03d9d568/bin-2019/utaipan/../../sv-benchmarks/c/ldv-regression/test09_true-unreach-call_true-termination.c [2018-11-10 02:34:20,688 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1ce8055c-889f-4c1c-ba58-f39b03d9d568/bin-2019/utaipan/data/5adc430aa/51a3c136b3bd439787a1371523f86eb2/FLAG0d28239bd [2018-11-10 02:34:21,033 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 02:34:21,033 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_1ce8055c-889f-4c1c-ba58-f39b03d9d568/sv-benchmarks/c/ldv-regression/test09_true-unreach-call_true-termination.c [2018-11-10 02:34:21,038 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1ce8055c-889f-4c1c-ba58-f39b03d9d568/bin-2019/utaipan/data/5adc430aa/51a3c136b3bd439787a1371523f86eb2/FLAG0d28239bd [2018-11-10 02:34:21,049 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_1ce8055c-889f-4c1c-ba58-f39b03d9d568/bin-2019/utaipan/data/5adc430aa/51a3c136b3bd439787a1371523f86eb2 [2018-11-10 02:34:21,051 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 02:34:21,052 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 02:34:21,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 02:34:21,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 02:34:21,056 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 02:34:21,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 02:34:21" (1/1) ... [2018-11-10 02:34:21,058 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f638c13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:34:21, skipping insertion in model container [2018-11-10 02:34:21,058 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 02:34:21" (1/1) ... [2018-11-10 02:34:21,066 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 02:34:21,080 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 02:34:21,194 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 02:34:21,203 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 02:34:21,216 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 02:34:21,227 INFO L193 MainTranslator]: Completed translation [2018-11-10 02:34:21,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:34:21 WrapperNode [2018-11-10 02:34:21,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 02:34:21,228 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 02:34:21,228 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 02:34:21,229 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 02:34:21,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:34:21" (1/1) ... [2018-11-10 02:34:21,242 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:34:21" (1/1) ... [2018-11-10 02:34:21,258 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 02:34:21,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 02:34:21,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 02:34:21,258 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 02:34:21,264 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:34:21" (1/1) ... [2018-11-10 02:34:21,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:34:21" (1/1) ... [2018-11-10 02:34:21,266 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:34:21" (1/1) ... [2018-11-10 02:34:21,266 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:34:21" (1/1) ... [2018-11-10 02:34:21,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:34:21" (1/1) ... [2018-11-10 02:34:21,270 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:34:21" (1/1) ... [2018-11-10 02:34:21,272 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:34:21" (1/1) ... [2018-11-10 02:34:21,273 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 02:34:21,273 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 02:34:21,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 02:34:21,273 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 02:34:21,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:34:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1ce8055c-889f-4c1c-ba58-f39b03d9d568/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 [2018-11-10 02:34:21,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 02:34:21,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 02:34:21,375 INFO L130 BoogieDeclarations]: Found specification of procedure f [2018-11-10 02:34:21,375 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2018-11-10 02:34:21,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 02:34:21,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 02:34:21,375 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 02:34:21,375 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 02:34:21,539 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 02:34:21,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 02:34:21 BoogieIcfgContainer [2018-11-10 02:34:21,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 02:34:21,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 02:34:21,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 02:34:21,542 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 02:34:21,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 02:34:21" (1/3) ... [2018-11-10 02:34:21,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f96435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 02:34:21, skipping insertion in model container [2018-11-10 02:34:21,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:34:21" (2/3) ... [2018-11-10 02:34:21,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f96435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 02:34:21, skipping insertion in model container [2018-11-10 02:34:21,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 02:34:21" (3/3) ... [2018-11-10 02:34:21,544 INFO L112 eAbstractionObserver]: Analyzing ICFG test09_true-unreach-call_true-termination.c [2018-11-10 02:34:21,550 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 02:34:21,555 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 02:34:21,569 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 02:34:21,599 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 02:34:21,599 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 02:34:21,599 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 02:34:21,599 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 02:34:21,600 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 02:34:21,600 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 02:34:21,600 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 02:34:21,600 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 02:34:21,613 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-11-10 02:34:21,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-10 02:34:21,617 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 02:34:21,617 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 02:34:21,619 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 02:34:21,623 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 02:34:21,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1889415219, now seen corresponding path program 1 times [2018-11-10 02:34:21,625 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 02:34:21,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 02:34:21,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 02:34:21,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 02:34:21,662 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 02:34:21,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 02:34:21,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 02:34:21,802 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 02:34:21,802 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 02:34:21,802 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 02:34:21,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 02:34:21,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 02:34:21,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 02:34:21,816 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 4 states. [2018-11-10 02:34:21,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 02:34:21,875 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-11-10 02:34:21,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 02:34:21,877 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-11-10 02:34:21,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 02:34:21,883 INFO L225 Difference]: With dead ends: 33 [2018-11-10 02:34:21,883 INFO L226 Difference]: Without dead ends: 15 [2018-11-10 02:34:21,885 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-10 02:34:21,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-11-10 02:34:21,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-10 02:34:21,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-10 02:34:21,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2018-11-10 02:34:21,910 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 14 [2018-11-10 02:34:21,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 02:34:21,910 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2018-11-10 02:34:21,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 02:34:21,911 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2018-11-10 02:34:21,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-10 02:34:21,911 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 02:34:21,911 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 02:34:21,912 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 02:34:21,912 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 02:34:21,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1918044370, now seen corresponding path program 1 times [2018-11-10 02:34:21,912 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 02:34:21,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 02:34:21,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 02:34:21,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 02:34:21,914 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 02:34:21,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 02:34:22,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 02:34:22,162 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 02:34:22,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-10 02:34:22,162 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 02:34:22,164 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-10 02:34:22,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-10 02:34:22,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-11-10 02:34:22,164 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand 7 states. [2018-11-10 02:34:22,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 02:34:22,311 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2018-11-10 02:34:22,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-10 02:34:22,311 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2018-11-10 02:34:22,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 02:34:22,312 INFO L225 Difference]: With dead ends: 15 [2018-11-10 02:34:22,312 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 02:34:22,313 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-11-10 02:34:22,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 02:34:22,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 02:34:22,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 02:34:22,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 02:34:22,314 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2018-11-10 02:34:22,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 02:34:22,314 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 02:34:22,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-10 02:34:22,314 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 02:34:22,314 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 02:34:22,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 02:34:22,404 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-10 02:34:22,404 INFO L421 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~p1~0.offset |old(~p1~0.offset)|) (= ~p1~0.base |old(~p1~0.base)|)) [2018-11-10 02:34:22,404 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 02:34:22,404 INFO L425 ceAbstractionStarter]: For program point L9(lines 9 14) no Hoare annotation was computed. [2018-11-10 02:34:22,405 INFO L425 ceAbstractionStarter]: For program point fEXIT(lines 7 15) no Hoare annotation was computed. [2018-11-10 02:34:22,405 INFO L421 ceAbstractionStarter]: At program point fENTRY(lines 7 15) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (and (= ~p1~0.offset |old(~p1~0.offset)|) (= |~#a~0.base| ~p1~0.base)) (not (= 1 (select (select |#memory_int| ~p2~0.base) ~p2~0.offset))) (= |~#a~0.base| ~p2~0.base) (not (= |~#a~0.offset| |old(~p1~0.offset)|)) (not (= |old(~p1~0.base)| |~#a~0.base|))) [2018-11-10 02:34:22,405 INFO L425 ceAbstractionStarter]: For program point fFINAL(lines 7 15) no Hoare annotation was computed. [2018-11-10 02:34:22,405 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 02:34:22,405 INFO L421 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (= ~p1~0.base ~p2~0.base) (= ~p1~0.offset ~p2~0.offset) (not (= |~#a~0.base| |~#b~0.base|))) [2018-11-10 02:34:22,405 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 02:34:22,405 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 02:34:22,405 INFO L421 ceAbstractionStarter]: At program point L32(lines 17 39) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (not (= |old(~p2~0.offset)| |old(~p1~0.offset)|)) (not (= |old(~p1~0.base)| |old(~p2~0.base)|))) [2018-11-10 02:34:22,405 INFO L425 ceAbstractionStarter]: For program point L31(lines 31 33) no Hoare annotation was computed. [2018-11-10 02:34:22,406 INFO L421 ceAbstractionStarter]: At program point mainENTRY(lines 17 39) the Hoare annotation is: (or (and (= ~p1~0.base ~p2~0.base) (= ~p1~0.offset ~p2~0.offset) (= ~p1~0.offset |old(~p1~0.offset)|) (= ~p1~0.base |old(~p1~0.base)|)) (= |~#a~0.base| |~#b~0.base|) (not (= |old(~p2~0.offset)| |old(~p1~0.offset)|)) (not (= |old(~p1~0.base)| |old(~p2~0.base)|))) [2018-11-10 02:34:22,406 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 17 39) no Hoare annotation was computed. [2018-11-10 02:34:22,406 INFO L421 ceAbstractionStarter]: At program point L27(line 27) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (not (= |old(~p2~0.offset)| |old(~p1~0.offset)|)) (not (= |old(~p1~0.base)| |old(~p2~0.base)|)) (and (= 1 (select (select |#memory_int| ~p2~0.base) ~p2~0.offset)) (= |~#a~0.offset| ~p1~0.offset) (not (= ~p2~0.base |~#a~0.base|)) (= |~#a~0.base| ~p1~0.base))) [2018-11-10 02:34:22,406 INFO L425 ceAbstractionStarter]: For program point L27-1(line 27) no Hoare annotation was computed. [2018-11-10 02:34:22,406 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 17 39) no Hoare annotation was computed. [2018-11-10 02:34:22,406 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 37) no Hoare annotation was computed. [2018-11-10 02:34:22,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 02:34:22 BoogieIcfgContainer [2018-11-10 02:34:22,418 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 02:34:22,418 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 02:34:22,418 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 02:34:22,418 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 02:34:22,419 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 02:34:21" (3/4) ... [2018-11-10 02:34:22,424 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 02:34:22,429 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 02:34:22,429 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2018-11-10 02:34:22,430 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 02:34:22,435 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2018-11-10 02:34:22,435 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2018-11-10 02:34:22,436 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-11-10 02:34:22,436 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-10 02:34:22,458 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (a == b || !(\old(p2) == \old(p1))) || !(\old(p1) == \old(p2)) [2018-11-10 02:34:22,479 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_1ce8055c-889f-4c1c-ba58-f39b03d9d568/bin-2019/utaipan/witness.graphml [2018-11-10 02:34:22,479 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 02:34:22,480 INFO L168 Benchmark]: Toolchain (without parser) took 1428.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 963.0 MB in the beginning and 1.0 GB in the end (delta: -59.4 MB). Peak memory consumption was 81.7 MB. Max. memory is 11.5 GB. [2018-11-10 02:34:22,481 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 02:34:22,481 INFO L168 Benchmark]: CACSL2BoogieTranslator took 175.19 ms. Allocated memory is still 1.0 GB. Free memory was 963.0 MB in the beginning and 952.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 02:34:22,482 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.78 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 946.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-10 02:34:22,482 INFO L168 Benchmark]: Boogie Preprocessor took 14.73 ms. Allocated memory is still 1.0 GB. Free memory is still 946.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 02:34:22,483 INFO L168 Benchmark]: RCFGBuilder took 266.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -174.4 MB). Peak memory consumption was 14.9 MB. Max. memory is 11.5 GB. [2018-11-10 02:34:22,483 INFO L168 Benchmark]: TraceAbstraction took 877.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 93.5 MB). Peak memory consumption was 93.5 MB. Max. memory is 11.5 GB. [2018-11-10 02:34:22,483 INFO L168 Benchmark]: Witness Printer took 61.07 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-10 02:34:22,486 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 175.19 ms. Allocated memory is still 1.0 GB. Free memory was 963.0 MB in the beginning and 952.3 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 29.78 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 946.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.73 ms. Allocated memory is still 1.0 GB. Free memory is still 946.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 266.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -174.4 MB). Peak memory consumption was 14.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 877.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 93.5 MB). Peak memory consumption was 93.5 MB. Max. memory is 11.5 GB. * Witness Printer took 61.07 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 37]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (a == b || !(\old(p2) == \old(p1))) || !(\old(p1) == \old(p2)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. SAFE Result, 0.8s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 23 SDtfs, 10 SDslu, 33 SDs, 0 SdLazy, 22 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 116 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 29 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 2418 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...