./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/bhmr2007.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_68516a1c-cbe5-450c-a7b1-b09e60b2f6c3/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_68516a1c-cbe5-450c-a7b1-b09e60b2f6c3/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_68516a1c-cbe5-450c-a7b1-b09e60b2f6c3/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_68516a1c-cbe5-450c-a7b1-b09e60b2f6c3/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/bhmr2007.i -s /tmp/vcloud-vcloud-master/worker/run_dir_68516a1c-cbe5-450c-a7b1-b09e60b2f6c3/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_68516a1c-cbe5-450c-a7b1-b09e60b2f6c3/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 ad9e151ff8328164b10bed0ca90425954d296eb8 ......................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:53:07,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:53:07,241 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:53:07,309 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:53:07,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:53:07,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:53:07,314 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:53:07,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:53:07,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:53:07,321 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:53:07,323 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:53:07,324 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:53:07,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:53:07,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:53:07,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:53:07,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:53:07,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:53:07,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:53:07,334 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:53:07,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:53:07,339 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:53:07,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:53:07,342 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:53:07,343 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:53:07,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:53:07,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:53:07,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:53:07,349 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:53:07,350 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:53:07,351 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:53:07,352 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:53:07,353 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:53:07,354 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:53:07,355 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:53:07,356 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:53:07,357 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:53:07,358 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:53:07,358 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:53:07,359 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:53:07,360 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:53:07,361 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:53:07,362 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_68516a1c-cbe5-450c-a7b1-b09e60b2f6c3/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:53:07,387 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:53:07,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:53:07,388 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:53:07,388 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:53:07,389 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:53:07,389 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:53:07,389 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:53:07,389 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:53:07,390 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:53:07,390 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:53:07,390 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:53:07,390 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:53:07,391 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:53:07,391 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:53:07,391 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:53:07,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:53:07,392 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:53:07,392 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:53:07,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:53:07,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:53:07,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:53:07,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:53:07,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:53:07,394 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:53:07,394 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:53:07,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:53:07,395 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:53:07,395 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:53:07,395 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:53:07,395 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:53:07,396 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:53:07,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:53:07,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:53:07,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:53:07,397 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:53:07,397 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:53:07,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:53:07,397 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:53:07,398 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:53:07,398 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:53:07,398 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_68516a1c-cbe5-450c-a7b1-b09e60b2f6c3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_68516a1c-cbe5-450c-a7b1-b09e60b2f6c3/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad9e151ff8328164b10bed0ca90425954d296eb8 [2020-11-22 12:53:07,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:53:07,688 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:53:07,691 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:53:07,692 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:53:07,693 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:53:07,694 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_68516a1c-cbe5-450c-a7b1-b09e60b2f6c3/bin/utaipan/../../sv-benchmarks/c/loop-lit/bhmr2007.i [2020-11-22 12:53:07,783 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_68516a1c-cbe5-450c-a7b1-b09e60b2f6c3/bin/utaipan/data/afd47a8a9/4496c3d463a348e0980dbae5a9bebd20/FLAG8b02a1dc8 [2020-11-22 12:53:08,207 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:53:08,207 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_68516a1c-cbe5-450c-a7b1-b09e60b2f6c3/sv-benchmarks/c/loop-lit/bhmr2007.i [2020-11-22 12:53:08,213 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_68516a1c-cbe5-450c-a7b1-b09e60b2f6c3/bin/utaipan/data/afd47a8a9/4496c3d463a348e0980dbae5a9bebd20/FLAG8b02a1dc8 [2020-11-22 12:53:08,619 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_68516a1c-cbe5-450c-a7b1-b09e60b2f6c3/bin/utaipan/data/afd47a8a9/4496c3d463a348e0980dbae5a9bebd20 [2020-11-22 12:53:08,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:53:08,623 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:53:08,625 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:53:08,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:53:08,629 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:53:08,629 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:53:08" (1/1) ... [2020-11-22 12:53:08,632 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33c03943 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:53:08, skipping insertion in model container [2020-11-22 12:53:08,632 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:53:08" (1/1) ... [2020-11-22 12:53:08,639 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:53:08,655 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:53:08,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:53:08,879 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:53:08,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:53:08,929 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:53:08,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:53:08 WrapperNode [2020-11-22 12:53:08,930 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:53:08,933 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:53:08,933 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:53:08,933 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:53:08,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:53:08" (1/1) ... [2020-11-22 12:53:08,950 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:53:08" (1/1) ... [2020-11-22 12:53:08,971 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:53:08,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:53:08,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:53:08,973 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:53:08,982 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:53:08" (1/1) ... [2020-11-22 12:53:08,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:53:08" (1/1) ... [2020-11-22 12:53:08,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:53:08" (1/1) ... [2020-11-22 12:53:08,993 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:53:08" (1/1) ... [2020-11-22 12:53:08,999 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:53:08" (1/1) ... [2020-11-22 12:53:09,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:53:08" (1/1) ... [2020-11-22 12:53:09,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:53:08" (1/1) ... [2020-11-22 12:53:09,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:53:09,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:53:09,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:53:09,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:53:09,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:53:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_68516a1c-cbe5-450c-a7b1-b09e60b2f6c3/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 [2020-11-22 12:53:09,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:53:09,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:53:09,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:53:09,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:53:09,501 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:53:09,502 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-22 12:53:09,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:53:09 BoogieIcfgContainer [2020-11-22 12:53:09,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:53:09,505 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:53:09,505 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:53:09,509 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:53:09,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:53:08" (1/3) ... [2020-11-22 12:53:09,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69ce6676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:53:09, skipping insertion in model container [2020-11-22 12:53:09,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:53:08" (2/3) ... [2020-11-22 12:53:09,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69ce6676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:53:09, skipping insertion in model container [2020-11-22 12:53:09,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:53:09" (3/3) ... [2020-11-22 12:53:09,512 INFO L111 eAbstractionObserver]: Analyzing ICFG bhmr2007.i [2020-11-22 12:53:09,523 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:53:09,527 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:53:09,539 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 12:53:09,563 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:53:09,564 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:53:09,565 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:53:09,565 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:53:09,565 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:53:09,565 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:53:09,565 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:53:09,565 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:53:09,587 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-11-22 12:53:09,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-22 12:53:09,591 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:53:09,592 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-22 12:53:09,592 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:53:09,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:53:09,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1967882508, now seen corresponding path program 1 times [2020-11-22 12:53:09,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:53:09,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966855133] [2020-11-22 12:53:09,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:53:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:53:09,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:53:09,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966855133] [2020-11-22 12:53:09,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:53:09,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 12:53:09,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811291236] [2020-11-22 12:53:09,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:53:09,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:53:09,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:53:09,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:53:09,905 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 5 states. [2020-11-22 12:53:09,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:53:09,965 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2020-11-22 12:53:09,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:53:09,966 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-11-22 12:53:09,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:53:09,984 INFO L225 Difference]: With dead ends: 24 [2020-11-22 12:53:09,988 INFO L226 Difference]: Without dead ends: 8 [2020-11-22 12:53:09,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:53:10,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-11-22 12:53:10,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-11-22 12:53:10,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-22 12:53:10,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-11-22 12:53:10,046 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2020-11-22 12:53:10,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:53:10,047 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-11-22 12:53:10,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:53:10,048 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-11-22 12:53:10,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-22 12:53:10,049 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:53:10,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:53:10,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:53:10,050 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:53:10,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:53:10,054 INFO L82 PathProgramCache]: Analyzing trace with hash -871942207, now seen corresponding path program 1 times [2020-11-22 12:53:10,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:53:10,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247801486] [2020-11-22 12:53:10,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:53:10,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:53:10,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:53:10,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247801486] [2020-11-22 12:53:10,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377137235] [2020-11-22 12:53:10,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_68516a1c-cbe5-450c-a7b1-b09e60b2f6c3/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 [2020-11-22 12:53:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:53:10,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-22 12:53:10,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:53:10,402 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-22 12:53:10,403 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 12:53:10,413 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 12:53:10,424 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-22 12:53:10,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:53:10,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:53:10,471 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 12:53:10,533 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-22 12:53:10,533 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 12:53:10,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:53:10,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [646952289] [2020-11-22 12:53:10,628 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-11-22 12:53:10,628 INFO L166 IcfgInterpreter]: Building call graph [2020-11-22 12:53:10,634 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-22 12:53:10,641 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-22 12:53:10,642 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-22 12:53:10,983 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-22 12:53:11,123 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2020-11-22 12:53:11,255 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-11-22 12:53:11,486 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37 [2020-11-22 12:53:11,488 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 12:53:11,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-22 12:53:11,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2020-11-22 12:53:11,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370994034] [2020-11-22 12:53:11,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-22 12:53:11,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:53:11,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-22 12:53:11,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-11-22 12:53:11,497 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 9 states. [2020-11-22 12:53:11,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:53:11,769 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2020-11-22 12:53:11,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-22 12:53:11,770 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 7 [2020-11-22 12:53:11,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:53:11,771 INFO L225 Difference]: With dead ends: 10 [2020-11-22 12:53:11,771 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:53:11,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2020-11-22 12:53:11,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:53:11,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:53:11,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:53:11,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:53:11,773 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2020-11-22 12:53:11,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:53:11,773 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:53:11,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-22 12:53:11,773 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:53:11,773 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:53:11,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-22 12:53:11,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 12:53:12,070 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 12:53:12,070 INFO L274 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-11-22 12:53:12,070 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 12:53:12,071 INFO L270 CegarLoopResult]: At program point L28-2(lines 28 37) the Hoare annotation is: (and (< (div (+ ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0 2) 3) (+ ULTIMATE.start_main_~i~0 1)) (<= (+ ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0) (* 3 ULTIMATE.start_main_~n~0)) (< ULTIMATE.start_main_~i~0 (div (+ ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0 3) 3))) [2020-11-22 12:53:12,071 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-22 12:53:12,071 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-11-22 12:53:12,071 INFO L270 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2020-11-22 12:53:12,071 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-22 12:53:12,071 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-22 12:53:12,072 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-11-22 12:53:12,072 INFO L270 CegarLoopResult]: At program point L39(lines 24 40) the Hoare annotation is: (or (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (and (= ULTIMATE.start_main_~i~0 0) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~b~0 0))) [2020-11-22 12:53:12,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:53:12 BoogieIcfgContainer [2020-11-22 12:53:12,092 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:53:12,093 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:53:12,093 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:53:12,094 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:53:12,094 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:53:09" (3/4) ... [2020-11-22 12:53:12,097 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:53:12,115 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-11-22 12:53:12,116 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-22 12:53:12,116 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:53:12,116 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:53:12,174 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_68516a1c-cbe5-450c-a7b1-b09e60b2f6c3/bin/utaipan/witness.graphml [2020-11-22 12:53:12,174 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:53:12,175 INFO L168 Benchmark]: Toolchain (without parser) took 3551.74 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 53.8 MB in the beginning and 36.8 MB in the end (delta: 17.0 MB). Peak memory consumption was 35.8 MB. Max. memory is 16.1 GB. [2020-11-22 12:53:12,176 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 86.0 MB. Free memory was 59.0 MB in the beginning and 58.9 MB in the end (delta: 29.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:53:12,177 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.22 ms. Allocated memory is still 86.0 MB. Free memory was 53.5 MB in the beginning and 64.6 MB in the end (delta: -11.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:53:12,177 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.06 ms. Allocated memory is still 86.0 MB. Free memory was 64.6 MB in the beginning and 63.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:53:12,178 INFO L168 Benchmark]: Boogie Preprocessor took 45.20 ms. Allocated memory is still 86.0 MB. Free memory was 63.3 MB in the beginning and 62.5 MB in the end (delta: 828.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:53:12,178 INFO L168 Benchmark]: RCFGBuilder took 484.88 ms. Allocated memory is still 86.0 MB. Free memory was 62.1 MB in the beginning and 46.5 MB in the end (delta: 15.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-22 12:53:12,179 INFO L168 Benchmark]: TraceAbstraction took 2587.33 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 46.1 MB in the beginning and 40.1 MB in the end (delta: 6.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 16.1 GB. [2020-11-22 12:53:12,180 INFO L168 Benchmark]: Witness Printer took 81.24 ms. Allocated memory is still 104.9 MB. Free memory was 40.1 MB in the beginning and 36.8 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:53:12,182 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 86.0 MB. Free memory was 59.0 MB in the beginning and 58.9 MB in the end (delta: 29.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 305.22 ms. Allocated memory is still 86.0 MB. Free memory was 53.5 MB in the beginning and 64.6 MB in the end (delta: -11.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.06 ms. Allocated memory is still 86.0 MB. Free memory was 64.6 MB in the beginning and 63.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.20 ms. Allocated memory is still 86.0 MB. Free memory was 63.3 MB in the beginning and 62.5 MB in the end (delta: 828.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 484.88 ms. Allocated memory is still 86.0 MB. Free memory was 62.1 MB in the beginning and 46.5 MB in the end (delta: 15.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2587.33 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 46.1 MB in the beginning and 40.1 MB in the end (delta: 6.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 16.1 GB. * Witness Printer took 81.24 ms. Allocated memory is still 104.9 MB. Free memory was 40.1 MB in the beginning and 36.8 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 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: 28]: Loop Invariant Derived loop invariant: ((a + b + 2) / 3 < i + 1 && a + b <= 3 * n) && i < (a + b + 3) / 3 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: !(0 == cond) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: !(0 == cond) || ((i == 0 && a == 0) && b == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 20 SDslu, 17 SDs, 0 SdLazy, 25 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 10 NumberOfFragments, 45 HoareAnnotationTreeSize, 3 FomulaSimplifications, 35 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 53 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 1045 SizeOfPredicates, 8 NumberOfNonLiveVariables, 50 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 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...