./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_268b9a9b-5e11-40aa-9c89-e7b566c8e3c1/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_268b9a9b-5e11-40aa-9c89-e7b566c8e3c1/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_268b9a9b-5e11-40aa-9c89-e7b566c8e3c1/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_268b9a9b-5e11-40aa-9c89-e7b566c8e3c1/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i -s /tmp/vcloud-vcloud-master/worker/run_dir_268b9a9b-5e11-40aa-9c89-e7b566c8e3c1/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_268b9a9b-5e11-40aa-9c89-e7b566c8e3c1/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 63816408f16166958351bc134d9ad3d8551cdcd0 ...................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:40:52,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:40:52,170 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:40:52,237 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:40:52,238 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:40:52,248 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:40:52,255 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:40:52,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:40:52,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:40:52,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:40:52,267 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:40:52,269 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:40:52,269 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:40:52,271 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:40:52,275 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:40:52,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:40:52,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:40:52,293 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:40:52,295 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:40:52,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:40:52,308 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:40:52,310 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:40:52,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:40:52,314 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:40:52,321 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:40:52,322 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:40:52,322 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:40:52,324 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:40:52,325 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:40:52,328 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:40:52,328 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:40:52,329 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:40:52,330 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:40:52,331 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:40:52,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:40:52,332 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:40:52,333 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:40:52,333 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:40:52,333 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:40:52,334 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:40:52,335 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:40:52,341 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_268b9a9b-5e11-40aa-9c89-e7b566c8e3c1/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:40:52,367 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:40:52,367 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:40:52,368 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:40:52,368 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:40:52,369 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:40:52,369 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:40:52,369 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:40:52,369 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:40:52,369 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:40:52,370 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:40:52,370 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:40:52,370 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:40:52,370 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:40:52,370 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:40:52,371 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:40:52,372 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:40:52,372 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:40:52,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:40:52,372 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:40:52,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:40:52,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:40:52,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:40:52,373 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:40:52,373 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:40:52,373 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:40:52,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:40:52,374 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:40:52,374 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:40:52,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:40:52,374 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:40:52,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:40:52,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:40:52,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:40:52,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:40:52,376 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:40:52,376 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:40:52,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:40:52,376 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:40:52,376 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:40:52,377 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:40:52,377 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_268b9a9b-5e11-40aa-9c89-e7b566c8e3c1/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_268b9a9b-5e11-40aa-9c89-e7b566c8e3c1/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63816408f16166958351bc134d9ad3d8551cdcd0 [2020-11-28 07:40:52,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:40:52,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:40:52,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:40:52,664 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:40:52,665 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:40:52,683 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_268b9a9b-5e11-40aa-9c89-e7b566c8e3c1/bin/utaipan/../../sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i [2020-11-28 07:40:52,761 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_268b9a9b-5e11-40aa-9c89-e7b566c8e3c1/bin/utaipan/data/bbef05fdc/5ed5b3f0588a41bf9829304d6295fb83/FLAG116d75bd0 [2020-11-28 07:40:53,265 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:40:53,265 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_268b9a9b-5e11-40aa-9c89-e7b566c8e3c1/sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i [2020-11-28 07:40:53,271 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_268b9a9b-5e11-40aa-9c89-e7b566c8e3c1/bin/utaipan/data/bbef05fdc/5ed5b3f0588a41bf9829304d6295fb83/FLAG116d75bd0 [2020-11-28 07:40:53,605 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_268b9a9b-5e11-40aa-9c89-e7b566c8e3c1/bin/utaipan/data/bbef05fdc/5ed5b3f0588a41bf9829304d6295fb83 [2020-11-28 07:40:53,608 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:40:53,609 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:40:53,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:53,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:40:53,615 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:40:53,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:53" (1/1) ... [2020-11-28 07:40:53,618 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5220bfa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:53, skipping insertion in model container [2020-11-28 07:40:53,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:53" (1/1) ... [2020-11-28 07:40:53,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:40:53,641 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:40:53,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:53,855 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:40:53,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:53,889 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:40:53,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:53 WrapperNode [2020-11-28 07:40:53,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:53,892 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:40:53,892 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:40:53,892 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:40:53,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:53" (1/1) ... [2020-11-28 07:40:53,908 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:53" (1/1) ... [2020-11-28 07:40:53,926 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:40:53,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:40:53,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:40:53,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:40:53,936 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:53" (1/1) ... [2020-11-28 07:40:53,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:53" (1/1) ... [2020-11-28 07:40:53,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:53" (1/1) ... [2020-11-28 07:40:53,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:53" (1/1) ... [2020-11-28 07:40:53,944 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:53" (1/1) ... [2020-11-28 07:40:53,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:53" (1/1) ... [2020-11-28 07:40:53,950 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:53" (1/1) ... [2020-11-28 07:40:53,952 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:40:53,953 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:40:53,953 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:40:53,953 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:40:53,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_268b9a9b-5e11-40aa-9c89-e7b566c8e3c1/bin/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 [2020-11-28 07:40:54,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:40:54,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:40:54,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 07:40:54,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:40:54,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:40:54,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:40:54,475 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:40:54,476 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-11-28 07:40:54,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:54 BoogieIcfgContainer [2020-11-28 07:40:54,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:40:54,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:40:54,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:40:54,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:40:54,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:40:53" (1/3) ... [2020-11-28 07:40:54,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b812d41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:40:54, skipping insertion in model container [2020-11-28 07:40:54,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:53" (2/3) ... [2020-11-28 07:40:54,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b812d41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:40:54, skipping insertion in model container [2020-11-28 07:40:54,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:54" (3/3) ... [2020-11-28 07:40:54,488 INFO L111 eAbstractionObserver]: Analyzing ICFG veris.c_NetBSD-libc_loop.i [2020-11-28 07:40:54,509 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:40:54,514 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:40:54,529 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:40:54,580 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:40:54,580 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:40:54,580 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:40:54,580 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:40:54,581 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:40:54,581 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:40:54,581 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:40:54,581 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:40:54,596 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-11-28 07:40:54,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 07:40:54,601 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:54,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 07:40:54,602 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:54,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:54,608 INFO L82 PathProgramCache]: Analyzing trace with hash 66833386, now seen corresponding path program 1 times [2020-11-28 07:40:54,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:54,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608803235] [2020-11-28 07:40:54,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:54,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:54,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:54,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608803235] [2020-11-28 07:40:54,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:54,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:40:54,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253858476] [2020-11-28 07:40:54,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:40:54,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:54,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:40:54,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:40:54,875 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 4 states. [2020-11-28 07:40:54,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:54,949 INFO L93 Difference]: Finished difference Result 20 states and 25 transitions. [2020-11-28 07:40:54,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:40:54,951 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-11-28 07:40:54,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:54,960 INFO L225 Difference]: With dead ends: 20 [2020-11-28 07:40:54,960 INFO L226 Difference]: Without dead ends: 10 [2020-11-28 07:40:54,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:40:54,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-28 07:40:54,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2020-11-28 07:40:54,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-28 07:40:54,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-11-28 07:40:54,995 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2020-11-28 07:40:54,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:54,995 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-11-28 07:40:54,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:40:54,996 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-11-28 07:40:54,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:40:54,996 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:54,996 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:54,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:40:54,997 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:54,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:54,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1998727478, now seen corresponding path program 1 times [2020-11-28 07:40:54,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:54,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825553637] [2020-11-28 07:40:54,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:55,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:55,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:55,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825553637] [2020-11-28 07:40:55,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725154002] [2020-11-28 07:40:55,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_268b9a9b-5e11-40aa-9c89-e7b566c8e3c1/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:40:55,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:55,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-28 07:40:55,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:40:55,354 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 07:40:55,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:55,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:40:55,412 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:40:55,425 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:40:55,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:55,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2112487686] [2020-11-28 07:40:55,454 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-11-28 07:40:55,454 INFO L166 IcfgInterpreter]: Building call graph [2020-11-28 07:40:55,459 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-28 07:40:55,465 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-28 07:40:55,466 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-28 07:40:55,797 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-28 07:40:55,857 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-28 07:40:56,571 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-28 07:40:56,939 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 63 [2020-11-28 07:40:58,035 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 137 DAG size of output: 119 [2020-11-28 07:40:59,231 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 146 DAG size of output: 123 [2020-11-28 07:40:59,515 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2020-11-28 07:40:59,518 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:40:59,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-28 07:40:59,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2020-11-28 07:40:59,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448190106] [2020-11-28 07:40:59,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 07:40:59,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:59,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 07:40:59,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-11-28 07:40:59,522 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 7 states. [2020-11-28 07:40:59,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:59,612 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2020-11-28 07:40:59,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:40:59,614 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2020-11-28 07:40:59,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:59,614 INFO L225 Difference]: With dead ends: 17 [2020-11-28 07:40:59,614 INFO L226 Difference]: Without dead ends: 14 [2020-11-28 07:40:59,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-11-28 07:40:59,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-28 07:40:59,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2020-11-28 07:40:59,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-28 07:40:59,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-11-28 07:40:59,619 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2020-11-28 07:40:59,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:59,619 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-11-28 07:40:59,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 07:40:59,620 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-11-28 07:40:59,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:40:59,620 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:59,620 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2020-11-28 07:40:59,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-28 07:40:59,821 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:59,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:59,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1801111446, now seen corresponding path program 2 times [2020-11-28 07:40:59,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:59,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604555761] [2020-11-28 07:40:59,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:59,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:59,943 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-28 07:40:59,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604555761] [2020-11-28 07:40:59,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481780257] [2020-11-28 07:40:59,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_268b9a9b-5e11-40aa-9c89-e7b566c8e3c1/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:40:59,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2020-11-28 07:40:59,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 07:40:59,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-28 07:41:00,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:41:00,131 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-28 07:41:00,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:41:00,156 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-28 07:41:00,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1616994284] [2020-11-28 07:41:00,159 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-11-28 07:41:00,159 INFO L166 IcfgInterpreter]: Building call graph [2020-11-28 07:41:00,159 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-28 07:41:00,160 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-28 07:41:00,160 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-28 07:41:00,281 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-28 07:41:00,295 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-28 07:41:00,751 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-28 07:41:01,098 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 63 [2020-11-28 07:41:02,064 WARN L193 SmtUtils]: Spent 921.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 119 [2020-11-28 07:41:03,039 WARN L193 SmtUtils]: Spent 921.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 123 [2020-11-28 07:41:03,320 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2020-11-28 07:41:03,321 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:41:03,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-28 07:41:03,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2020-11-28 07:41:03,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856237333] [2020-11-28 07:41:03,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:41:03,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:41:03,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:41:03,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:41:03,323 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 6 states. [2020-11-28 07:41:03,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:03,370 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2020-11-28 07:41:03,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:41:03,370 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-28 07:41:03,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:03,371 INFO L225 Difference]: With dead ends: 12 [2020-11-28 07:41:03,371 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:41:03,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-11-28 07:41:03,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:41:03,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:41:03,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:41:03,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:41:03,372 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-11-28 07:41:03,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:03,372 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:41:03,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:41:03,373 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:41:03,373 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:41:03,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-11-28 07:41:03,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:41:03,691 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:41:03,691 INFO L270 CegarLoopResult]: At program point L29-3(lines 29 33) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_glob2_~pathlim.base ~tmp~0.base)) (.cse1 (= ~tmp~0.base ULTIMATE.start_glob2_~p~0.base)) (.cse2 (<= ULTIMATE.start_glob2_~pathlim.offset ~tmp~0.offset))) (or (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0 .cse1 .cse2) (and (= ULTIMATE.start_glob2_~p~0.offset 0) (<= 4 ~tmp~0.offset) .cse0 .cse1 .cse2))) [2020-11-28 07:41:03,691 INFO L274 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-11-28 07:41:03,691 INFO L270 CegarLoopResult]: At program point L15-2(lines 14 19) the Hoare annotation is: (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_glob2_~pathlim.base ~tmp~0.base) (= ~tmp~0.base ULTIMATE.start_glob2_~p~0.base) (<= ULTIMATE.start_glob2_~pathlim.offset ~tmp~0.offset)) [2020-11-28 07:41:03,691 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:41:03,692 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:41:03,692 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-28 07:41:03,692 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-28 07:41:03,692 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-11-28 07:41:03,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:41:03 BoogieIcfgContainer [2020-11-28 07:41:03,717 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:41:03,717 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:41:03,717 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:41:03,718 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:41:03,718 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:54" (3/4) ... [2020-11-28 07:41:03,721 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:41:03,729 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-28 07:41:03,730 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-28 07:41:03,730 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 07:41:03,730 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:41:03,787 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_268b9a9b-5e11-40aa-9c89-e7b566c8e3c1/bin/utaipan/witness.graphml [2020-11-28 07:41:03,788 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:41:03,789 INFO L168 Benchmark]: Toolchain (without parser) took 10179.06 ms. Allocated memory was 83.9 MB in the beginning and 182.5 MB in the end (delta: 98.6 MB). Free memory was 51.7 MB in the beginning and 68.7 MB in the end (delta: -17.0 MB). Peak memory consumption was 82.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:03,790 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 83.9 MB. Free memory was 58.4 MB in the beginning and 58.3 MB in the end (delta: 26.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:41:03,790 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.32 ms. Allocated memory is still 83.9 MB. Free memory was 51.5 MB in the beginning and 61.6 MB in the end (delta: -10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:03,791 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.81 ms. Allocated memory is still 83.9 MB. Free memory was 61.6 MB in the beginning and 60.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:03,792 INFO L168 Benchmark]: Boogie Preprocessor took 24.97 ms. Allocated memory is still 83.9 MB. Free memory was 60.2 MB in the beginning and 59.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:41:03,792 INFO L168 Benchmark]: RCFGBuilder took 525.41 ms. Allocated memory is still 83.9 MB. Free memory was 59.1 MB in the beginning and 41.3 MB in the end (delta: 17.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:03,793 INFO L168 Benchmark]: TraceAbstraction took 9237.00 ms. Allocated memory was 83.9 MB in the beginning and 182.5 MB in the end (delta: 98.6 MB). Free memory was 40.9 MB in the beginning and 70.8 MB in the end (delta: -29.8 MB). Peak memory consumption was 70.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:03,794 INFO L168 Benchmark]: Witness Printer took 70.44 ms. Allocated memory is still 182.5 MB. Free memory was 70.8 MB in the beginning and 68.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:03,797 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 83.9 MB. Free memory was 58.4 MB in the beginning and 58.3 MB in the end (delta: 26.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 279.32 ms. Allocated memory is still 83.9 MB. Free memory was 51.5 MB in the beginning and 61.6 MB in the end (delta: -10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.81 ms. Allocated memory is still 83.9 MB. Free memory was 61.6 MB in the beginning and 60.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.97 ms. Allocated memory is still 83.9 MB. Free memory was 60.2 MB in the beginning and 59.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 525.41 ms. Allocated memory is still 83.9 MB. Free memory was 59.1 MB in the beginning and 41.3 MB in the end (delta: 17.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9237.00 ms. Allocated memory was 83.9 MB in the beginning and 182.5 MB in the end (delta: 98.6 MB). Free memory was 40.9 MB in the beginning and 70.8 MB in the end (delta: -29.8 MB). Peak memory consumption was 70.5 MB. Max. memory is 16.1 GB. * Witness Printer took 70.44 ms. Allocated memory is still 182.5 MB. Free memory was 70.8 MB in the beginning and 68.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 29]: Loop Invariant Derived loop invariant: (((1 <= cond && pathlim == tmp) && tmp == p) && pathlim <= tmp) || ((((p == 0 && 4 <= tmp) && pathlim == tmp) && tmp == p) && pathlim <= tmp) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((1 <= cond && pathlim == tmp) && tmp == p) && pathlim <= tmp - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.0s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 15 SDslu, 20 SDs, 0 SdLazy, 26 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 5.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 7 NumberOfFragments, 43 HoareAnnotationTreeSize, 2 FomulaSimplifications, 118 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 43 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 2541 SizeOfPredicates, 28 NumberOfNonLiveVariables, 153 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 15/27 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...