./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-new/count_by_1.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_b0a908da-08ae-4c73-87e7-6c93e7ef71ef/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b0a908da-08ae-4c73-87e7-6c93e7ef71ef/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b0a908da-08ae-4c73-87e7-6c93e7ef71ef/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b0a908da-08ae-4c73-87e7-6c93e7ef71ef/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-new/count_by_1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_b0a908da-08ae-4c73-87e7-6c93e7ef71ef/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b0a908da-08ae-4c73-87e7-6c93e7ef71ef/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 490e26872e4d657862c7b215f56fb6c391045902 ................................................................................................................................................................................................................................................................................................................................................................................... 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 12:47:51,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:47:51,115 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:47:51,202 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:47:51,203 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:47:51,209 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:47:51,212 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:47:51,221 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:47:51,224 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:47:51,232 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:47:51,233 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:47:51,234 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:47:51,235 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:47:51,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:47:51,239 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:47:51,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:47:51,243 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:47:51,244 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:47:51,251 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:47:51,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:47:51,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:47:51,261 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:47:51,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:47:51,264 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:47:51,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:47:51,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:47:51,270 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:47:51,272 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:47:51,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:47:51,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:47:51,274 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:47:51,275 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:47:51,277 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:47:51,278 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:47:51,279 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:47:51,279 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:47:51,280 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:47:51,280 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:47:51,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:47:51,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:47:51,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:47:51,285 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b0a908da-08ae-4c73-87e7-6c93e7ef71ef/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:47:51,327 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:47:51,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:47:51,329 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:47:51,329 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:47:51,329 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:47:51,329 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:47:51,330 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:47:51,330 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:47:51,330 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:47:51,330 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:47:51,331 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:47:51,332 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:47:51,332 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:47:51,332 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:47:51,333 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:47:51,333 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:47:51,333 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:47:51,334 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:47:51,334 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:47:51,334 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:47:51,334 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:47:51,335 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:47:51,335 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:47:51,335 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:47:51,335 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:47:51,335 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:47:51,336 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:47:51,336 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:47:51,336 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:47:51,336 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:47:51,337 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:47:51,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:47:51,337 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:47:51,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:47:51,338 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:47:51,338 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:47:51,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:47:51,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:47:51,339 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:47:51,339 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:47:51,339 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_b0a908da-08ae-4c73-87e7-6c93e7ef71ef/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b0a908da-08ae-4c73-87e7-6c93e7ef71ef/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 490e26872e4d657862c7b215f56fb6c391045902 [2020-11-22 12:47:51,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:47:51,658 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:47:51,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:47:51,662 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:47:51,663 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:47:51,664 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b0a908da-08ae-4c73-87e7-6c93e7ef71ef/bin/utaipan/../../sv-benchmarks/c/loop-new/count_by_1.i [2020-11-22 12:47:51,767 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b0a908da-08ae-4c73-87e7-6c93e7ef71ef/bin/utaipan/data/6d9f3a1b4/7b3cee9dc7064614b15cad322ebb0685/FLAG66bf052ab [2020-11-22 12:47:52,238 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:47:52,238 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b0a908da-08ae-4c73-87e7-6c93e7ef71ef/sv-benchmarks/c/loop-new/count_by_1.i [2020-11-22 12:47:52,245 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b0a908da-08ae-4c73-87e7-6c93e7ef71ef/bin/utaipan/data/6d9f3a1b4/7b3cee9dc7064614b15cad322ebb0685/FLAG66bf052ab [2020-11-22 12:47:52,622 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b0a908da-08ae-4c73-87e7-6c93e7ef71ef/bin/utaipan/data/6d9f3a1b4/7b3cee9dc7064614b15cad322ebb0685 [2020-11-22 12:47:52,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:47:52,626 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:47:52,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:47:52,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:47:52,643 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:47:52,644 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:47:52" (1/1) ... [2020-11-22 12:47:52,647 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d9d8bdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:52, skipping insertion in model container [2020-11-22 12:47:52,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:47:52" (1/1) ... [2020-11-22 12:47:52,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:47:52,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:47:52,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:47:52,988 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:47:53,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:47:53,032 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:47:53,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:53 WrapperNode [2020-11-22 12:47:53,033 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:47:53,035 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:47:53,035 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:47:53,035 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:47:53,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:53" (1/1) ... [2020-11-22 12:47:53,053 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:53" (1/1) ... [2020-11-22 12:47:53,070 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:47:53,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:47:53,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:47:53,071 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:47:53,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:53" (1/1) ... [2020-11-22 12:47:53,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:53" (1/1) ... [2020-11-22 12:47:53,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:53" (1/1) ... [2020-11-22 12:47:53,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:53" (1/1) ... [2020-11-22 12:47:53,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:53" (1/1) ... [2020-11-22 12:47:53,093 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:53" (1/1) ... [2020-11-22 12:47:53,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:53" (1/1) ... [2020-11-22 12:47:53,108 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:47:53,109 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:47:53,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:47:53,112 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:47:53,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0a908da-08ae-4c73-87e7-6c93e7ef71ef/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 12:47:53,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:47:53,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:47:53,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:47:53,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:47:53,479 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:47:53,479 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-22 12:47:53,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:47:53 BoogieIcfgContainer [2020-11-22 12:47:53,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:47:53,483 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:47:53,483 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:47:53,487 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:47:53,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:47:52" (1/3) ... [2020-11-22 12:47:53,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23aa217d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:47:53, skipping insertion in model container [2020-11-22 12:47:53,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:53" (2/3) ... [2020-11-22 12:47:53,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23aa217d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:47:53, skipping insertion in model container [2020-11-22 12:47:53,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:47:53" (3/3) ... [2020-11-22 12:47:53,490 INFO L111 eAbstractionObserver]: Analyzing ICFG count_by_1.i [2020-11-22 12:47:53,513 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:47:53,517 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:47:53,544 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 12:47:53,594 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:47:53,594 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:47:53,594 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:47:53,595 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:47:53,595 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:47:53,595 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:47:53,595 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:47:53,595 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:47:53,614 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-11-22 12:47:53,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 12:47:53,619 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:47:53,620 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-22 12:47:53,620 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:47:53,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:47:53,627 INFO L82 PathProgramCache]: Analyzing trace with hash 66028260, now seen corresponding path program 1 times [2020-11-22 12:47:53,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:47:53,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471602671] [2020-11-22 12:47:53,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:47:53,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:47:53,775 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 12:47:53,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471602671] [2020-11-22 12:47:53,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:47:53,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:47:53,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329398643] [2020-11-22 12:47:53,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:47:53,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:47:53,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:47:53,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:47:53,797 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-11-22 12:47:53,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:47:53,829 INFO L93 Difference]: Finished difference Result 16 states and 20 transitions. [2020-11-22 12:47:53,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:47:53,831 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-22 12:47:53,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:47:53,842 INFO L225 Difference]: With dead ends: 16 [2020-11-22 12:47:53,842 INFO L226 Difference]: Without dead ends: 7 [2020-11-22 12:47:53,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:47:53,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-11-22 12:47:53,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-11-22 12:47:53,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-22 12:47:53,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2020-11-22 12:47:53,879 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2020-11-22 12:47:53,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:47:53,880 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2020-11-22 12:47:53,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:47:53,881 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2020-11-22 12:47:53,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-22 12:47:53,881 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:47:53,881 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-22 12:47:53,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:47:53,882 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:47:53,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:47:53,886 INFO L82 PathProgramCache]: Analyzing trace with hash 2043286721, now seen corresponding path program 1 times [2020-11-22 12:47:53,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:47:53,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147108308] [2020-11-22 12:47:53,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:47:53,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:47:53,947 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 12:47:53,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147108308] [2020-11-22 12:47:53,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830012167] [2020-11-22 12:47:53,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0a908da-08ae-4c73-87e7-6c93e7ef71ef/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 12:47:54,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:47:54,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 12:47:54,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:47:54,072 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 12:47:54,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:47:54,114 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 12:47:54,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1963587032] [2020-11-22 12:47:54,159 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2020-11-22 12:47:54,159 INFO L166 IcfgInterpreter]: Building call graph [2020-11-22 12:47:54,168 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-22 12:47:54,175 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-22 12:47:54,175 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-22 12:47:54,697 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-22 12:47:54,814 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 28 [2020-11-22 12:47:55,024 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 27 [2020-11-22 12:47:55,027 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 12:47:55,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-22 12:47:55,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2020-11-22 12:47:55,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391813129] [2020-11-22 12:47:55,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-22 12:47:55,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:47:55,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-22 12:47:55,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-11-22 12:47:55,031 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 7 states. [2020-11-22 12:47:55,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:47:55,057 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2020-11-22 12:47:55,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:47:55,058 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2020-11-22 12:47:55,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:47:55,059 INFO L225 Difference]: With dead ends: 14 [2020-11-22 12:47:55,059 INFO L226 Difference]: Without dead ends: 10 [2020-11-22 12:47:55,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-11-22 12:47:55,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-22 12:47:55,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-22 12:47:55,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-22 12:47:55,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-11-22 12:47:55,066 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 6 [2020-11-22 12:47:55,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:47:55,067 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-11-22 12:47:55,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-22 12:47:55,067 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-11-22 12:47:55,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-22 12:47:55,068 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:47:55,068 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2020-11-22 12:47:55,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-22 12:47:55,270 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:47:55,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:47:55,271 INFO L82 PathProgramCache]: Analyzing trace with hash -286027228, now seen corresponding path program 2 times [2020-11-22 12:47:55,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:47:55,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982177688] [2020-11-22 12:47:55,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:47:55,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:47:55,319 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-22 12:47:55,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982177688] [2020-11-22 12:47:55,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:47:55,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 12:47:55,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779435964] [2020-11-22 12:47:55,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:47:55,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:47:55,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:47:55,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:47:55,322 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 4 states. [2020-11-22 12:47:55,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:47:55,344 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2020-11-22 12:47:55,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:47:55,345 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-22 12:47:55,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:47:55,345 INFO L225 Difference]: With dead ends: 10 [2020-11-22 12:47:55,345 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:47:55,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:47:55,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:47:55,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:47:55,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:47:55,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:47:55,347 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2020-11-22 12:47:55,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:47:55,347 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:47:55,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:47:55,347 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:47:55,348 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:47:55,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-22 12:47:55,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 12:47:55,372 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 12:47:55,372 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 12:47:55,372 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-22 12:47:55,373 INFO L270 CegarLoopResult]: At program point L26-3(line 26) the Hoare annotation is: (<= ULTIMATE.start_main_~i~0 1000000) [2020-11-22 12:47:55,373 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-11-22 12:47:55,373 INFO L277 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2020-11-22 12:47:55,373 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-22 12:47:55,373 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-22 12:47:55,374 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-11-22 12:47:55,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:47:55 BoogieIcfgContainer [2020-11-22 12:47:55,393 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:47:55,393 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:47:55,394 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:47:55,394 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:47:55,394 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:47:53" (3/4) ... [2020-11-22 12:47:55,403 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:47:55,414 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-22 12:47:55,414 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-22 12:47:55,415 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-22 12:47:55,415 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:47:55,462 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b0a908da-08ae-4c73-87e7-6c93e7ef71ef/bin/utaipan/witness.graphml [2020-11-22 12:47:55,465 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:47:55,467 INFO L168 Benchmark]: Toolchain (without parser) took 2839.96 ms. Allocated memory was 111.1 MB in the beginning and 151.0 MB in the end (delta: 39.8 MB). Free memory was 79.9 MB in the beginning and 117.7 MB in the end (delta: -37.8 MB). Peak memory consumption was 1.3 MB. Max. memory is 16.1 GB. [2020-11-22 12:47:55,469 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 77.6 MB. Free memory is still 36.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:47:55,471 INFO L168 Benchmark]: CACSL2BoogieTranslator took 395.47 ms. Allocated memory is still 111.1 MB. Free memory was 79.7 MB in the beginning and 88.2 MB in the end (delta: -8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:47:55,471 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.13 ms. Allocated memory is still 111.1 MB. Free memory was 88.2 MB in the beginning and 87.3 MB in the end (delta: 903.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:47:55,472 INFO L168 Benchmark]: Boogie Preprocessor took 37.80 ms. Allocated memory is still 111.1 MB. Free memory was 86.8 MB in the beginning and 86.2 MB in the end (delta: 585.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:47:55,472 INFO L168 Benchmark]: RCFGBuilder took 372.07 ms. Allocated memory is still 111.1 MB. Free memory was 86.2 MB in the beginning and 73.0 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:47:55,473 INFO L168 Benchmark]: TraceAbstraction took 1910.15 ms. Allocated memory was 111.1 MB in the beginning and 151.0 MB in the end (delta: 39.8 MB). Free memory was 72.7 MB in the beginning and 120.9 MB in the end (delta: -48.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:47:55,473 INFO L168 Benchmark]: Witness Printer took 72.39 ms. Allocated memory is still 151.0 MB. Free memory was 120.8 MB in the beginning and 117.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:47:55,477 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 77.6 MB. Free memory is still 36.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 395.47 ms. Allocated memory is still 111.1 MB. Free memory was 79.7 MB in the beginning and 88.2 MB in the end (delta: -8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.13 ms. Allocated memory is still 111.1 MB. Free memory was 88.2 MB in the beginning and 87.3 MB in the end (delta: 903.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.80 ms. Allocated memory is still 111.1 MB. Free memory was 86.8 MB in the beginning and 86.2 MB in the end (delta: 585.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 372.07 ms. Allocated memory is still 111.1 MB. Free memory was 86.2 MB in the beginning and 73.0 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1910.15 ms. Allocated memory was 111.1 MB in the beginning and 151.0 MB in the end (delta: 39.8 MB). Free memory was 72.7 MB in the beginning and 120.9 MB in the end (delta: -48.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 72.39 ms. Allocated memory is still 151.0 MB. Free memory was 120.8 MB in the beginning and 117.7 MB in the end (delta: 3.1 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: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: i <= 1000000 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 4, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 1 SDslu, 12 SDs, 0 SdLazy, 13 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 7 NumberOfFragments, 4 HoareAnnotationTreeSize, 2 FomulaSimplifications, 29 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 263 SizeOfPredicates, 1 NumberOfNonLiveVariables, 39 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 10/13 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...