./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark11_linear.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ba2cd3-0f3d-4056-90ec-bcdac76675da/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ba2cd3-0f3d-4056-90ec-bcdac76675da/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ba2cd3-0f3d-4056-90ec-bcdac76675da/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ba2cd3-0f3d-4056-90ec-bcdac76675da/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark11_linear.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ba2cd3-0f3d-4056-90ec-bcdac76675da/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ba2cd3-0f3d-4056-90ec-bcdac76675da/bin/utaipan-WLngWcDbfI --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 7cade2448c0840b34de4fc0011fce849b7a398d5 ................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:27:42,242 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:27:42,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:27:42,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:27:42,293 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:27:42,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:27:42,303 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:27:42,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:27:42,310 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:27:42,318 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:27:42,319 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:27:42,320 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:27:42,321 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:27:42,324 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:27:42,325 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:27:42,327 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:27:42,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:27:42,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:27:42,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:27:42,345 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:27:42,347 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:27:42,349 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:27:42,352 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:27:42,353 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:27:42,357 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:27:42,358 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:27:42,358 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:27:42,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:27:42,361 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:27:42,363 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:27:42,363 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:27:42,364 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:27:42,366 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:27:42,368 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:27:42,369 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:27:42,369 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:27:42,370 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:27:42,370 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:27:42,371 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:27:42,372 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:27:42,373 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:27:42,375 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ba2cd3-0f3d-4056-90ec-bcdac76675da/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:27:42,424 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:27:42,425 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:27:42,426 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:27:42,426 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:27:42,426 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:27:42,427 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:27:42,427 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:27:42,427 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:27:42,433 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:27:42,434 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:27:42,435 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:27:42,435 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:27:42,435 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:27:42,436 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:27:42,436 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:27:42,437 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:27:42,437 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:27:42,437 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:27:42,437 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:27:42,438 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:27:42,438 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:27:42,438 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:27:42,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:27:42,439 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:27:42,439 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:27:42,439 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:27:42,439 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:27:42,440 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:27:42,440 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:27:42,441 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:27:42,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:42,442 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:27:42,442 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:27:42,443 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:27:42,443 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:27:42,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:27:42,443 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:27:42,443 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:27:42,444 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:27:42,444 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_worker_vcloud-master_on_vcloud-master/run_dir_08ba2cd3-0f3d-4056-90ec-bcdac76675da/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ba2cd3-0f3d-4056-90ec-bcdac76675da/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cade2448c0840b34de4fc0011fce849b7a398d5 [2021-10-11 02:27:42,701 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:27:42,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:27:42,741 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:27:42,743 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:27:42,744 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:27:42,745 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ba2cd3-0f3d-4056-90ec-bcdac76675da/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/loop-zilu/benchmark11_linear.i [2021-10-11 02:27:42,823 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ba2cd3-0f3d-4056-90ec-bcdac76675da/bin/utaipan-WLngWcDbfI/data/026e42d9f/f7fc1e881a304313b07369bd5f4d0ade/FLAG8598747e8 [2021-10-11 02:27:43,265 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:27:43,266 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ba2cd3-0f3d-4056-90ec-bcdac76675da/sv-benchmarks/c/loop-zilu/benchmark11_linear.i [2021-10-11 02:27:43,272 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ba2cd3-0f3d-4056-90ec-bcdac76675da/bin/utaipan-WLngWcDbfI/data/026e42d9f/f7fc1e881a304313b07369bd5f4d0ade/FLAG8598747e8 [2021-10-11 02:27:43,644 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ba2cd3-0f3d-4056-90ec-bcdac76675da/bin/utaipan-WLngWcDbfI/data/026e42d9f/f7fc1e881a304313b07369bd5f4d0ade [2021-10-11 02:27:43,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:27:43,648 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:27:43,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:43,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:27:43,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:27:43,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:43" (1/1) ... [2021-10-11 02:27:43,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17d2b621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:43, skipping insertion in model container [2021-10-11 02:27:43,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:43" (1/1) ... [2021-10-11 02:27:43,663 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:27:43,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:27:43,849 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ba2cd3-0f3d-4056-90ec-bcdac76675da/sv-benchmarks/c/loop-zilu/benchmark11_linear.i[868,881] [2021-10-11 02:27:43,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:43,869 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:27:43,882 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ba2cd3-0f3d-4056-90ec-bcdac76675da/sv-benchmarks/c/loop-zilu/benchmark11_linear.i[868,881] [2021-10-11 02:27:43,884 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:43,898 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:27:43,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:43 WrapperNode [2021-10-11 02:27:43,899 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:43,900 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:43,900 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:27:43,901 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:27:43,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:43" (1/1) ... [2021-10-11 02:27:43,914 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:43" (1/1) ... [2021-10-11 02:27:43,926 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:43,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:27:43,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:27:43,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:27:43,936 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:43" (1/1) ... [2021-10-11 02:27:43,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:43" (1/1) ... [2021-10-11 02:27:43,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:43" (1/1) ... [2021-10-11 02:27:43,937 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:43" (1/1) ... [2021-10-11 02:27:43,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:43" (1/1) ... [2021-10-11 02:27:43,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:43" (1/1) ... [2021-10-11 02:27:43,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:43" (1/1) ... [2021-10-11 02:27:43,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:27:43,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:27:43,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:27:43,947 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:27:43,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:43" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ba2cd3-0f3d-4056-90ec-bcdac76675da/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:27:44,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:27:44,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:27:44,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:27:44,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:27:44,260 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:27:44,260 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:27:44,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:44 BoogieIcfgContainer [2021-10-11 02:27:44,263 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:27:44,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:27:44,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:27:44,268 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:27:44,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:27:43" (1/3) ... [2021-10-11 02:27:44,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2275c864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:44, skipping insertion in model container [2021-10-11 02:27:44,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:43" (2/3) ... [2021-10-11 02:27:44,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2275c864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:44, skipping insertion in model container [2021-10-11 02:27:44,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:44" (3/3) ... [2021-10-11 02:27:44,271 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark11_linear.i [2021-10-11 02:27:44,287 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:27:44,290 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:27:44,315 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:27:44,338 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:27:44,338 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:27:44,338 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:27:44,338 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:27:44,339 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:27:44,339 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:27:44,339 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:27:44,339 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:27:44,352 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2021-10-11 02:27:44,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:27:44,385 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:44,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:27:44,386 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:44,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:44,392 INFO L82 PathProgramCache]: Analyzing trace with hash 59349214, now seen corresponding path program 1 times [2021-10-11 02:27:44,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:44,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76143831] [2021-10-11 02:27:44,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:44,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:44,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:44,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76143831] [2021-10-11 02:27:44,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:44,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:27:44,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6921795] [2021-10-11 02:27:44,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:44,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:44,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:44,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:44,656 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2021-10-11 02:27:44,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:44,689 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2021-10-11 02:27:44,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:44,691 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2021-10-11 02:27:44,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:44,699 INFO L225 Difference]: With dead ends: 16 [2021-10-11 02:27:44,699 INFO L226 Difference]: Without dead ends: 7 [2021-10-11 02:27:44,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:44,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-11 02:27:44,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-11 02:27:44,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-11 02:27:44,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2021-10-11 02:27:44,730 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2021-10-11 02:27:44,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:44,730 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-10-11 02:27:44,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:44,731 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2021-10-11 02:27:44,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:27:44,731 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:44,731 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:27:44,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:27:44,732 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:44,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:44,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1839242300, now seen corresponding path program 1 times [2021-10-11 02:27:44,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:44,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165807246] [2021-10-11 02:27:44,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:44,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:44,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:44,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165807246] [2021-10-11 02:27:44,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965731858] [2021-10-11 02:27:44,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ba2cd3-0f3d-4056-90ec-bcdac76675da/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:27:44,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:44,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 02:27:44,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:44,954 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:27:44,962 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-10-11 02:27:44,968 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:27:44,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:44,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:27:45,018 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:27:45,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:45,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [463696624] [2021-10-11 02:27:45,073 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-11 02:27:45,073 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:27:45,079 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:27:45,084 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:27:45,085 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:27:45,612 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:27:45,834 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2021-10-11 02:27:46,008 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:27:46,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:27:46,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2021-10-11 02:27:46,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595386798] [2021-10-11 02:27:46,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:27:46,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:46,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:27:46,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-11 02:27:46,015 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 8 states. [2021-10-11 02:27:46,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:46,069 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2021-10-11 02:27:46,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:27:46,073 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 6 [2021-10-11 02:27:46,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:46,074 INFO L225 Difference]: With dead ends: 9 [2021-10-11 02:27:46,074 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:27:46,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-10-11 02:27:46,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:27:46,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:27:46,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:27:46,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:27:46,079 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2021-10-11 02:27:46,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:46,079 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:27:46,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:27:46,080 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:27:46,086 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:27:46,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-11 02:27:46,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:27:46,338 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:27:46,338 INFO L265 CegarLoopResult]: At program point L27(lines 19 28) the Hoare annotation is: true [2021-10-11 02:27:46,339 INFO L258 CegarLoopResult]: At program point L23-2(lines 23 25) the Hoare annotation is: (< ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~n~0 1)) [2021-10-11 02:27:46,339 INFO L262 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-10-11 02:27:46,339 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:27:46,339 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-10-11 02:27:46,339 INFO L262 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2021-10-11 02:27:46,339 INFO L262 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2021-10-11 02:27:46,340 INFO L262 CegarLoopResult]: For program point L14(lines 14 18) no Hoare annotation was computed. [2021-10-11 02:27:46,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:27:46 BoogieIcfgContainer [2021-10-11 02:27:46,353 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:27:46,354 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:27:46,354 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:27:46,354 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:27:46,355 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:44" (3/4) ... [2021-10-11 02:27:46,357 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:27:46,366 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-11 02:27:46,366 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-11 02:27:46,366 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:27:46,367 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:27:46,407 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ba2cd3-0f3d-4056-90ec-bcdac76675da/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:27:46,407 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:27:46,408 INFO L168 Benchmark]: Toolchain (without parser) took 2759.89 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 67.5 MB in the beginning and 69.2 MB in the end (delta: -1.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:46,408 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 96.5 MB. Free memory was 54.4 MB in the beginning and 54.4 MB in the end (delta: 77.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:46,409 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.05 ms. Allocated memory is still 96.5 MB. Free memory was 67.2 MB in the beginning and 74.4 MB in the end (delta: -7.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:46,409 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.38 ms. Allocated memory is still 96.5 MB. Free memory was 74.4 MB in the beginning and 73.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:46,410 INFO L168 Benchmark]: Boogie Preprocessor took 18.83 ms. Allocated memory is still 96.5 MB. Free memory was 73.3 MB in the beginning and 72.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:46,410 INFO L168 Benchmark]: RCFGBuilder took 316.04 ms. Allocated memory is still 96.5 MB. Free memory was 72.2 MB in the beginning and 59.0 MB in the end (delta: 13.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:46,411 INFO L168 Benchmark]: TraceAbstraction took 2089.23 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 58.3 MB in the beginning and 71.3 MB in the end (delta: -13.0 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:46,412 INFO L168 Benchmark]: Witness Printer took 53.04 ms. Allocated memory is still 117.4 MB. Free memory was 71.3 MB in the beginning and 69.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:46,414 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 96.5 MB. Free memory was 54.4 MB in the beginning and 54.4 MB in the end (delta: 77.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 250.05 ms. Allocated memory is still 96.5 MB. Free memory was 67.2 MB in the beginning and 74.4 MB in the end (delta: -7.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 26.38 ms. Allocated memory is still 96.5 MB. Free memory was 74.4 MB in the beginning and 73.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.83 ms. Allocated memory is still 96.5 MB. Free memory was 73.3 MB in the beginning and 72.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 316.04 ms. Allocated memory is still 96.5 MB. Free memory was 72.2 MB in the beginning and 59.0 MB in the end (delta: 13.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2089.23 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 58.3 MB in the beginning and 71.3 MB in the end (delta: -13.0 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. * Witness Printer took 53.04 ms. Allocated memory is still 117.4 MB. Free memory was 71.3 MB in the beginning and 69.2 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: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: x < n + 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 2 SDslu, 7 SDs, 0 SdLazy, 18 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 6 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 20 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 282 SizeOfPredicates, 5 NumberOfNonLiveVariables, 43 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...