./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_52d25b0c-90e1-4aa1-9af6-5609fa4f25d3/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_52d25b0c-90e1-4aa1-9af6-5609fa4f25d3/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_52d25b0c-90e1-4aa1-9af6-5609fa4f25d3/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_52d25b0c-90e1-4aa1-9af6-5609fa4f25d3/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_52d25b0c-90e1-4aa1-9af6-5609fa4f25d3/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_52d25b0c-90e1-4aa1-9af6-5609fa4f25d3/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 [2018-10-26 19:18:51,338 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 19:18:51,340 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 19:18:51,351 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 19:18:51,352 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 19:18:51,353 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 19:18:51,356 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 19:18:51,358 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 19:18:51,360 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 19:18:51,363 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 19:18:51,364 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 19:18:51,365 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 19:18:51,366 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 19:18:51,368 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 19:18:51,375 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 19:18:51,375 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 19:18:51,376 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 19:18:51,377 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 19:18:51,380 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 19:18:51,382 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 19:18:51,384 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 19:18:51,386 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 19:18:51,389 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 19:18:51,391 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 19:18:51,392 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 19:18:51,392 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 19:18:51,393 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 19:18:51,394 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 19:18:51,394 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 19:18:51,395 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 19:18:51,395 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 19:18:51,395 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 19:18:51,396 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 19:18:51,396 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 19:18:51,396 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 19:18:51,397 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 19:18:51,397 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_52d25b0c-90e1-4aa1-9af6-5609fa4f25d3/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-26 19:18:51,413 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 19:18:51,415 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 19:18:51,416 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 19:18:51,416 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 19:18:51,417 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 19:18:51,417 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 19:18:51,417 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 19:18:51,418 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 19:18:51,418 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 19:18:51,418 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 19:18:51,418 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 19:18:51,419 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 19:18:51,420 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 19:18:51,421 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 19:18:51,421 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 19:18:51,421 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 19:18:51,421 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 19:18:51,421 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 19:18:51,421 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 19:18:51,422 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 19:18:51,422 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 19:18:51,422 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 19:18:51,422 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 19:18:51,422 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 19:18:51,422 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 19:18:51,422 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 19:18:51,423 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:18:51,423 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 19:18:51,423 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 19:18:51,423 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 19:18:51,423 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 19:18:51,423 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 19:18:51,423 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 19:18:51,424 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 19:18:51,424 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_52d25b0c-90e1-4aa1-9af6-5609fa4f25d3/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 [2018-10-26 19:18:51,473 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 19:18:51,484 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 19:18:51,488 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 19:18:51,489 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 19:18:51,490 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 19:18:51,490 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_52d25b0c-90e1-4aa1-9af6-5609fa4f25d3/bin-2019/utaipan/../../sv-benchmarks/c/ldv-regression/test09_true-unreach-call_true-termination.c [2018-10-26 19:18:51,539 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_52d25b0c-90e1-4aa1-9af6-5609fa4f25d3/bin-2019/utaipan/data/13ac6756d/a3b36c8e7294437aa9baec8a5c2a5ac9/FLAG7bf0ce504 [2018-10-26 19:18:51,930 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 19:18:51,932 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_52d25b0c-90e1-4aa1-9af6-5609fa4f25d3/sv-benchmarks/c/ldv-regression/test09_true-unreach-call_true-termination.c [2018-10-26 19:18:51,937 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_52d25b0c-90e1-4aa1-9af6-5609fa4f25d3/bin-2019/utaipan/data/13ac6756d/a3b36c8e7294437aa9baec8a5c2a5ac9/FLAG7bf0ce504 [2018-10-26 19:18:51,950 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_52d25b0c-90e1-4aa1-9af6-5609fa4f25d3/bin-2019/utaipan/data/13ac6756d/a3b36c8e7294437aa9baec8a5c2a5ac9 [2018-10-26 19:18:51,954 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 19:18:51,955 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 19:18:51,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 19:18:51,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 19:18:51,960 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 19:18:51,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:18:51" (1/1) ... [2018-10-26 19:18:51,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fe43bb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:18:51, skipping insertion in model container [2018-10-26 19:18:51,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:18:51" (1/1) ... [2018-10-26 19:18:51,976 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 19:18:51,993 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 19:18:52,150 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:18:52,160 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 19:18:52,174 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:18:52,188 INFO L193 MainTranslator]: Completed translation [2018-10-26 19:18:52,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:18:52 WrapperNode [2018-10-26 19:18:52,189 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 19:18:52,189 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 19:18:52,189 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 19:18:52,189 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 19:18:52,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:18:52" (1/1) ... [2018-10-26 19:18:52,206 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:18:52" (1/1) ... [2018-10-26 19:18:52,225 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 19:18:52,225 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 19:18:52,225 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 19:18:52,225 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 19:18:52,233 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:18:52" (1/1) ... [2018-10-26 19:18:52,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:18:52" (1/1) ... [2018-10-26 19:18:52,235 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:18:52" (1/1) ... [2018-10-26 19:18:52,235 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:18:52" (1/1) ... [2018-10-26 19:18:52,239 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:18:52" (1/1) ... [2018-10-26 19:18:52,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:18:52" (1/1) ... [2018-10-26 19:18:52,243 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:18:52" (1/1) ... [2018-10-26 19:18:52,244 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 19:18:52,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 19:18:52,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 19:18:52,245 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 19:18:52,247 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:18:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_52d25b0c-90e1-4aa1-9af6-5609fa4f25d3/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 [2018-10-26 19:18:52,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 19:18:52,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 19:18:52,369 INFO L130 BoogieDeclarations]: Found specification of procedure f [2018-10-26 19:18:52,370 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2018-10-26 19:18:52,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 19:18:52,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 19:18:52,371 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 19:18:52,371 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 19:18:52,879 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 19:18:52,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:18:52 BoogieIcfgContainer [2018-10-26 19:18:52,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 19:18:52,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 19:18:52,881 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 19:18:52,884 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 19:18:52,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:18:51" (1/3) ... [2018-10-26 19:18:52,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44b81548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:18:52, skipping insertion in model container [2018-10-26 19:18:52,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:18:52" (2/3) ... [2018-10-26 19:18:52,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44b81548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:18:52, skipping insertion in model container [2018-10-26 19:18:52,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:18:52" (3/3) ... [2018-10-26 19:18:52,888 INFO L112 eAbstractionObserver]: Analyzing ICFG test09_true-unreach-call_true-termination.c [2018-10-26 19:18:52,896 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 19:18:52,904 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 19:18:52,918 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 19:18:52,950 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 19:18:52,950 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 19:18:52,950 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 19:18:52,951 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 19:18:52,951 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 19:18:52,951 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 19:18:52,952 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 19:18:52,952 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 19:18:52,969 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-10-26 19:18:52,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-26 19:18:52,975 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:18:52,975 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:18:52,977 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:18:52,984 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:18:52,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1889415219, now seen corresponding path program 1 times [2018-10-26 19:18:52,987 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 19:18:53,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:18:53,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:18:53,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:18:53,031 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 19:18:53,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:18:53,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:18:53,242 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:18:53,242 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:18:53,242 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 19:18:53,246 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:18:53,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:18:53,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:18:53,259 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 4 states. [2018-10-26 19:18:53,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:18:53,372 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-10-26 19:18:53,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:18:53,374 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-10-26 19:18:53,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:18:53,383 INFO L225 Difference]: With dead ends: 33 [2018-10-26 19:18:53,384 INFO L226 Difference]: Without dead ends: 15 [2018-10-26 19:18:53,387 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 [2018-10-26 19:18:53,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-26 19:18:53,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-26 19:18:53,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-26 19:18:53,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2018-10-26 19:18:53,431 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 14 [2018-10-26 19:18:53,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:18:53,432 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2018-10-26 19:18:53,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:18:53,432 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2018-10-26 19:18:53,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-26 19:18:53,433 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:18:53,433 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:18:53,433 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:18:53,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:18:53,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1918044370, now seen corresponding path program 1 times [2018-10-26 19:18:53,436 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 19:18:53,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:18:53,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:18:53,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:18:53,438 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 19:18:53,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:18:53,986 WARN L179 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 30 [2018-10-26 19:18:54,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:18:54,139 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:18:54,140 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-26 19:18:54,140 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 19:18:54,141 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 19:18:54,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 19:18:54,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:18:54,142 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand 7 states. [2018-10-26 19:18:54,578 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 27 [2018-10-26 19:18:54,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:18:54,580 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2018-10-26 19:18:54,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 19:18:54,581 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2018-10-26 19:18:54,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:18:54,581 INFO L225 Difference]: With dead ends: 15 [2018-10-26 19:18:54,581 INFO L226 Difference]: Without dead ends: 0 [2018-10-26 19:18:54,582 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-10-26 19:18:54,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-26 19:18:54,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-26 19:18:54,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-26 19:18:54,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-26 19:18:54,583 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2018-10-26 19:18:54,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:18:54,583 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-26 19:18:54,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 19:18:54,583 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-26 19:18:54,583 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-26 19:18:54,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-26 19:18:54,842 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-10-26 19:18:54,842 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)|)) [2018-10-26 19:18:54,842 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-26 19:18:54,842 INFO L425 ceAbstractionStarter]: For program point L9(lines 9 14) no Hoare annotation was computed. [2018-10-26 19:18:54,843 INFO L425 ceAbstractionStarter]: For program point fEXIT(lines 7 15) no Hoare annotation was computed. [2018-10-26 19:18:54,843 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|))) [2018-10-26 19:18:54,843 INFO L425 ceAbstractionStarter]: For program point fFINAL(lines 7 15) no Hoare annotation was computed. [2018-10-26 19:18:54,843 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-26 19:18:54,843 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|))) [2018-10-26 19:18:54,843 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-26 19:18:54,843 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-26 19:18:54,843 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)|))) [2018-10-26 19:18:54,844 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 37) no Hoare annotation was computed. [2018-10-26 19:18:54,844 INFO L425 ceAbstractionStarter]: For program point L31(lines 31 33) no Hoare annotation was computed. [2018-10-26 19:18:54,844 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)|))) [2018-10-26 19:18:54,844 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 17 39) no Hoare annotation was computed. [2018-10-26 19:18:54,844 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))) [2018-10-26 19:18:54,844 INFO L425 ceAbstractionStarter]: For program point L27-1(line 27) no Hoare annotation was computed. [2018-10-26 19:18:54,844 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 17 39) no Hoare annotation was computed. [2018-10-26 19:18:54,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:18:54 BoogieIcfgContainer [2018-10-26 19:18:54,859 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 19:18:54,859 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 19:18:54,859 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 19:18:54,859 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 19:18:54,860 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:18:52" (3/4) ... [2018-10-26 19:18:54,863 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-26 19:18:54,869 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-26 19:18:54,870 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2018-10-26 19:18:54,870 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-26 19:18:54,874 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2018-10-26 19:18:54,875 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2018-10-26 19:18:54,875 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-10-26 19:18:54,875 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-10-26 19:18:54,898 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (a == b || !(\old(p2) == \old(p1))) || !(\old(p1) == \old(p2)) [2018-10-26 19:18:54,933 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_52d25b0c-90e1-4aa1-9af6-5609fa4f25d3/bin-2019/utaipan/witness.graphml [2018-10-26 19:18:54,934 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 19:18:54,934 INFO L168 Benchmark]: Toolchain (without parser) took 2979.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 193.5 MB). Free memory was 963.8 MB in the beginning and 1.1 GB in the end (delta: -103.4 MB). Peak memory consumption was 90.0 MB. Max. memory is 11.5 GB. [2018-10-26 19:18:54,935 INFO L168 Benchmark]: CDTParser took 1.45 ms. Allocated memory is still 1.0 GB. Free memory is still 982.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 19:18:54,935 INFO L168 Benchmark]: CACSL2BoogieTranslator took 232.75 ms. Allocated memory is still 1.0 GB. Free memory was 963.8 MB in the beginning and 951.8 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-10-26 19:18:54,935 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.70 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 946.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-10-26 19:18:54,935 INFO L168 Benchmark]: Boogie Preprocessor took 19.48 ms. Allocated memory is still 1.0 GB. Free memory is still 946.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 19:18:54,936 INFO L168 Benchmark]: RCFGBuilder took 635.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 193.5 MB). Free memory was 946.4 MB in the beginning and 1.2 GB in the end (delta: -220.2 MB). Peak memory consumption was 21.4 MB. Max. memory is 11.5 GB. [2018-10-26 19:18:54,936 INFO L168 Benchmark]: TraceAbstraction took 1978.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 92.8 MB). Peak memory consumption was 92.8 MB. Max. memory is 11.5 GB. [2018-10-26 19:18:54,936 INFO L168 Benchmark]: Witness Printer took 74.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2018-10-26 19:18:54,938 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.45 ms. Allocated memory is still 1.0 GB. Free memory is still 982.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 232.75 ms. Allocated memory is still 1.0 GB. Free memory was 963.8 MB in the beginning and 951.8 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 35.70 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 946.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.48 ms. Allocated memory is still 1.0 GB. Free memory is still 946.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 635.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 193.5 MB). Free memory was 946.4 MB in the beginning and 1.2 GB in the end (delta: -220.2 MB). Peak memory consumption was 21.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1978.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 92.8 MB). Peak memory consumption was 92.8 MB. Max. memory is 11.5 GB. * Witness Printer took 74.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 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, 1.9s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 23 SDtfs, 10 SDslu, 33 SDs, 0 SdLazy, 22 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.9s 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, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s 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...