./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound1.c --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_d83ce9fe-188a-4d20-91fa-a4d0a5d15ea2/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d83ce9fe-188a-4d20-91fa-a4d0a5d15ea2/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d83ce9fe-188a-4d20-91fa-a4d0a5d15ea2/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d83ce9fe-188a-4d20-91fa-a4d0a5d15ea2/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d83ce9fe-188a-4d20-91fa-a4d0a5d15ea2/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d83ce9fe-188a-4d20-91fa-a4d0a5d15ea2/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 aafe64e6797986c8e2640a7b7069fb043af4b00a ..................................................................................................................................................................................................................................................................................................................................................................... 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 12:58:26,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:58:26,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:58:26,382 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:58:26,383 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:58:26,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:58:26,389 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:58:26,393 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:58:26,396 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:58:26,402 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:58:26,403 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:58:26,405 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:58:26,405 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:58:26,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:58:26,411 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:58:26,413 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:58:26,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:58:26,420 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:58:26,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:58:26,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:58:26,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:58:26,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:58:26,436 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:58:26,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:58:26,443 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:58:26,443 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:58:26,444 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:58:26,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:58:26,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:58:26,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:58:26,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:58:26,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:58:26,451 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:58:26,452 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:58:26,453 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:58:26,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:58:26,454 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:58:26,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:58:26,455 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:58:26,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:58:26,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:58:26,462 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d83ce9fe-188a-4d20-91fa-a4d0a5d15ea2/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:58:26,500 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:58:26,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:58:26,502 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:58:26,502 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:58:26,502 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:58:26,502 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:58:26,503 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:58:26,503 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:58:26,503 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:58:26,503 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:58:26,504 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:58:26,504 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:58:26,505 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:58:26,505 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:58:26,505 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:58:26,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:58:26,506 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:58:26,506 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:58:26,507 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:58:26,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:58:26,507 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:58:26,507 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:58:26,507 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:58:26,508 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:58:26,508 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:58:26,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:58:26,508 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:58:26,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:58:26,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:58:26,511 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:58:26,511 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:58:26,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:58:26,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:58:26,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:58:26,512 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:58:26,512 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:58:26,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:58:26,513 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:58:26,513 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:58:26,513 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:58:26,514 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_d83ce9fe-188a-4d20-91fa-a4d0a5d15ea2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d83ce9fe-188a-4d20-91fa-a4d0a5d15ea2/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aafe64e6797986c8e2640a7b7069fb043af4b00a [2020-11-22 12:58:26,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:58:26,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:58:26,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:58:26,856 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:58:26,856 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:58:26,857 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d83ce9fe-188a-4d20-91fa-a4d0a5d15ea2/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound1.c [2020-11-22 12:58:26,935 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d83ce9fe-188a-4d20-91fa-a4d0a5d15ea2/bin/utaipan/data/5ff873393/e7716fb0bab7478698c08cb95d9767b8/FLAG90492346b [2020-11-22 12:58:27,443 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:58:27,443 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d83ce9fe-188a-4d20-91fa-a4d0a5d15ea2/sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound1.c [2020-11-22 12:58:27,455 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d83ce9fe-188a-4d20-91fa-a4d0a5d15ea2/bin/utaipan/data/5ff873393/e7716fb0bab7478698c08cb95d9767b8/FLAG90492346b [2020-11-22 12:58:27,843 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d83ce9fe-188a-4d20-91fa-a4d0a5d15ea2/bin/utaipan/data/5ff873393/e7716fb0bab7478698c08cb95d9767b8 [2020-11-22 12:58:27,845 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:58:27,846 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:58:27,851 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:58:27,851 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:58:27,855 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:58:27,856 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:58:27" (1/1) ... [2020-11-22 12:58:27,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d1be9a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:27, skipping insertion in model container [2020-11-22 12:58:27,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:58:27" (1/1) ... [2020-11-22 12:58:27,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:58:27,884 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:58:28,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:58:28,119 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:58:28,150 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:58:28,169 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:58:28,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:28 WrapperNode [2020-11-22 12:58:28,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:58:28,172 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:58:28,172 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:58:28,172 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:58:28,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:28" (1/1) ... [2020-11-22 12:58:28,187 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:28" (1/1) ... [2020-11-22 12:58:28,207 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:58:28,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:58:28,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:58:28,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:58:28,217 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:28" (1/1) ... [2020-11-22 12:58:28,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:28" (1/1) ... [2020-11-22 12:58:28,228 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:28" (1/1) ... [2020-11-22 12:58:28,228 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:28" (1/1) ... [2020-11-22 12:58:28,234 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:28" (1/1) ... [2020-11-22 12:58:28,246 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:28" (1/1) ... [2020-11-22 12:58:28,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:28" (1/1) ... [2020-11-22 12:58:28,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:58:28,253 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:58:28,253 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:58:28,255 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:58:28,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d83ce9fe-188a-4d20-91fa-a4d0a5d15ea2/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 12:58:28,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:58:28,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:58:28,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:58:28,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:58:28,649 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:58:28,649 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-11-22 12:58:28,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:58:28 BoogieIcfgContainer [2020-11-22 12:58:28,651 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:58:28,653 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:58:28,653 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:58:28,660 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:58:28,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:58:27" (1/3) ... [2020-11-22 12:58:28,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@132c0be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:58:28, skipping insertion in model container [2020-11-22 12:58:28,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:28" (2/3) ... [2020-11-22 12:58:28,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@132c0be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:58:28, skipping insertion in model container [2020-11-22 12:58:28,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:58:28" (3/3) ... [2020-11-22 12:58:28,664 INFO L111 eAbstractionObserver]: Analyzing ICFG ps3-ll_unwindbound1.c [2020-11-22 12:58:28,674 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:58:28,684 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-22 12:58:28,694 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-22 12:58:28,722 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:58:28,722 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:58:28,722 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:58:28,723 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:58:28,723 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:58:28,723 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:58:28,723 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:58:28,723 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:58:28,735 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-11-22 12:58:28,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 12:58:28,739 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:58:28,740 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-22 12:58:28,740 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:58:28,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:58:28,746 INFO L82 PathProgramCache]: Analyzing trace with hash 73178710, now seen corresponding path program 1 times [2020-11-22 12:58:28,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:58:28,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772922969] [2020-11-22 12:58:28,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:58:28,845 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 12:58:28,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1766954256] [2020-11-22 12:58:28,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d83ce9fe-188a-4d20-91fa-a4d0a5d15ea2/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 12:58:28,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:58:28,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-22 12:58:28,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:58:29,050 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 12:58:29,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:58:29,075 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 12:58:29,106 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 12:58:29,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772922969] [2020-11-22 12:58:29,107 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 12:58:29,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766954256] [2020-11-22 12:58:29,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:58:29,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-22 12:58:29,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613484824] [2020-11-22 12:58:29,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:58:29,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:58:29,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:58:29,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:58:29,136 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 5 states. [2020-11-22 12:58:31,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:58:31,498 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2020-11-22 12:58:31,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:58:31,501 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2020-11-22 12:58:31,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:58:31,508 INFO L225 Difference]: With dead ends: 45 [2020-11-22 12:58:31,509 INFO L226 Difference]: Without dead ends: 22 [2020-11-22 12:58:31,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:58:31,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-22 12:58:31,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2020-11-22 12:58:31,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-22 12:58:31,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-11-22 12:58:31,535 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 5 [2020-11-22 12:58:31,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:58:31,535 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-11-22 12:58:31,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:58:31,536 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-11-22 12:58:31,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-22 12:58:31,536 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:58:31,537 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1] [2020-11-22 12:58:31,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-11-22 12:58:31,750 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:58:31,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:58:31,751 INFO L82 PathProgramCache]: Analyzing trace with hash -2082731538, now seen corresponding path program 1 times [2020-11-22 12:58:31,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:58:31,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769292352] [2020-11-22 12:58:31,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:58:31,768 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 12:58:31,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [201350665] [2020-11-22 12:58:31,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d83ce9fe-188a-4d20-91fa-a4d0a5d15ea2/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 [2020-11-22 12:58:31,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:58:31,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-22 12:58:31,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:58:31,898 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-22 12:58:31,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:58:31,915 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-22 12:58:31,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769292352] [2020-11-22 12:58:31,915 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 12:58:31,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201350665] [2020-11-22 12:58:31,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [548614706] [2020-11-22 12:58:31,938 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-11-22 12:58:31,938 INFO L166 IcfgInterpreter]: Building call graph [2020-11-22 12:58:31,942 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-22 12:58:31,947 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-22 12:58:31,947 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-22 12:58:32,736 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-22 12:58:32,956 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2020-11-22 12:58:33,669 WARN L193 SmtUtils]: Spent 659.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 74 [2020-11-22 12:58:34,337 WARN L193 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 78 [2020-11-22 12:58:35,260 WARN L193 SmtUtils]: Spent 854.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 67 [2020-11-22 12:58:35,351 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 12:58:35,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-22 12:58:35,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2020-11-22 12:58:35,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756829251] [2020-11-22 12:58:35,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:58:35,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:58:35,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:58:35,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-22 12:58:35,355 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 5 states. [2020-11-22 12:58:35,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:58:35,405 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-11-22 12:58:35,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 12:58:35,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-22 12:58:35,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:58:35,406 INFO L225 Difference]: With dead ends: 19 [2020-11-22 12:58:35,406 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:58:35,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-22 12:58:35,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:58:35,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:58:35,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:58:35,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:58:35,408 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-11-22 12:58:35,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:58:35,408 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:58:35,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:58:35,408 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:58:35,408 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:58:35,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:58:35,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 12:58:35,668 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 12:58:35,668 INFO L274 CegarLoopResult]: For program point L27-1(lines 27 36) no Hoare annotation was computed. [2020-11-22 12:58:35,668 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-22 12:58:35,669 INFO L270 CegarLoopResult]: At program point L27-3(lines 27 36) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_main_~y~0 0) (<= 0 ~counter~0)) (and (<= 1 ~counter~0) (= (* 6 ULTIMATE.start_main_~x~0) (+ (* 2 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) ULTIMATE.start_main_~y~0 (* 3 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)))) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond))) [2020-11-22 12:58:35,669 INFO L274 CegarLoopResult]: For program point L27-4(lines 27 36) no Hoare annotation was computed. [2020-11-22 12:58:35,669 INFO L274 CegarLoopResult]: For program point L11(lines 11 12) no Hoare annotation was computed. [2020-11-22 12:58:35,669 INFO L274 CegarLoopResult]: For program point L11-1(lines 11 12) no Hoare annotation was computed. [2020-11-22 12:58:35,669 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 12:58:35,669 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-22 12:58:35,669 INFO L274 CegarLoopResult]: For program point L10(lines 10 13) no Hoare annotation was computed. [2020-11-22 12:58:35,670 INFO L270 CegarLoopResult]: At program point L10-1(lines 30 31) the Hoare annotation is: (and (<= 1 ~counter~0) (= ULTIMATE.start_main_~x~0 0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 0)) [2020-11-22 12:58:35,670 INFO L274 CegarLoopResult]: For program point L10-2(lines 10 13) no Hoare annotation was computed. [2020-11-22 12:58:35,670 INFO L277 CegarLoopResult]: At program point L10-3(lines 9 15) the Hoare annotation is: true [2020-11-22 12:58:35,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:58:35 BoogieIcfgContainer [2020-11-22 12:58:35,683 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:58:35,684 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:58:35,684 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:58:35,684 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:58:35,685 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:58:28" (3/4) ... [2020-11-22 12:58:35,687 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:58:35,694 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-22 12:58:35,694 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-22 12:58:35,695 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-22 12:58:35,695 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:58:35,731 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d83ce9fe-188a-4d20-91fa-a4d0a5d15ea2/bin/utaipan/witness.graphml [2020-11-22 12:58:35,731 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:58:35,733 INFO L168 Benchmark]: Toolchain (without parser) took 7885.72 ms. Allocated memory was 98.6 MB in the beginning and 121.6 MB in the end (delta: 23.1 MB). Free memory was 67.4 MB in the beginning and 76.6 MB in the end (delta: -9.2 MB). Peak memory consumption was 13.0 MB. Max. memory is 16.1 GB. [2020-11-22 12:58:35,733 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 73.4 MB. Free memory was 34.3 MB in the beginning and 34.2 MB in the end (delta: 33.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:58:35,734 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.46 ms. Allocated memory is still 98.6 MB. Free memory was 67.2 MB in the beginning and 76.4 MB in the end (delta: -9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:58:35,735 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.74 ms. Allocated memory is still 98.6 MB. Free memory was 76.4 MB in the beginning and 75.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:58:35,735 INFO L168 Benchmark]: Boogie Preprocessor took 43.42 ms. Allocated memory is still 98.6 MB. Free memory was 75.0 MB in the beginning and 73.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:58:35,736 INFO L168 Benchmark]: RCFGBuilder took 398.72 ms. Allocated memory is still 98.6 MB. Free memory was 73.9 MB in the beginning and 60.3 MB in the end (delta: 13.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-22 12:58:35,737 INFO L168 Benchmark]: TraceAbstraction took 7029.73 ms. Allocated memory was 98.6 MB in the beginning and 121.6 MB in the end (delta: 23.1 MB). Free memory was 59.8 MB in the beginning and 78.7 MB in the end (delta: -18.9 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:58:35,738 INFO L168 Benchmark]: Witness Printer took 47.51 ms. Allocated memory is still 121.6 MB. Free memory was 78.7 MB in the beginning and 76.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:58:35,745 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 73.4 MB. Free memory was 34.3 MB in the beginning and 34.2 MB in the end (delta: 33.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 320.46 ms. Allocated memory is still 98.6 MB. Free memory was 67.2 MB in the beginning and 76.4 MB in the end (delta: -9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.74 ms. Allocated memory is still 98.6 MB. Free memory was 76.4 MB in the beginning and 75.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.42 ms. Allocated memory is still 98.6 MB. Free memory was 75.0 MB in the beginning and 73.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 398.72 ms. Allocated memory is still 98.6 MB. Free memory was 73.9 MB in the beginning and 60.3 MB in the end (delta: 13.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7029.73 ms. Allocated memory was 98.6 MB in the beginning and 121.6 MB in the end (delta: 23.1 MB). Free memory was 59.8 MB in the beginning and 78.7 MB in the end (delta: -18.9 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. * Witness Printer took 47.51 ms. Allocated memory is still 121.6 MB. Free memory was 78.7 MB in the beginning and 76.6 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: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: ((x == 0 && y == 0) && 0 <= counter) || ((1 <= counter && 6 * x == 2 * (y * y * y) + y + 3 * (y * y)) && 1 <= cond) - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((1 <= counter && x == 0) && 1 <= cond) && y == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.8s, OverallIterations: 2, TraceHistogramMax: 3, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 27 SDslu, 28 SDs, 0 SdLazy, 27 SolverSat, 10 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=1, 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, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 9 NumberOfFragments, 49 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 800 SizeOfPredicates, 5 NumberOfNonLiveVariables, 140 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 18/20 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...