./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/array_1-2.c --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_751fdeb8-3a98-4cf8-92b7-3f9de83fab83/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751fdeb8-3a98-4cf8-92b7-3f9de83fab83/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_751fdeb8-3a98-4cf8-92b7-3f9de83fab83/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751fdeb8-3a98-4cf8-92b7-3f9de83fab83/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-acceleration/array_1-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751fdeb8-3a98-4cf8-92b7-3f9de83fab83/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_751fdeb8-3a98-4cf8-92b7-3f9de83fab83/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 0edc3db25587eb2dcb44164977e2a8fa1ed85700 ................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:23:57,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:23:57,204 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:23:57,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:23:57,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:23:57,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:23:57,237 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:23:57,240 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:23:57,242 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:23:57,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:23:57,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:23:57,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:23:57,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:23:57,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:23:57,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:23:57,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:23:57,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:23:57,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:23:57,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:23:57,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:23:57,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:23:57,261 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:23:57,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:23:57,264 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:23:57,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:23:57,268 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:23:57,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:23:57,270 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:23:57,271 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:23:57,272 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:23:57,273 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:23:57,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:23:57,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:23:57,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:23:57,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:23:57,277 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:23:57,278 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:23:57,279 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:23:57,279 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:23:57,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:23:57,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:23:57,282 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751fdeb8-3a98-4cf8-92b7-3f9de83fab83/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:23:57,307 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:23:57,308 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:23:57,309 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:23:57,309 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:23:57,309 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:23:57,310 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:23:57,310 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:23:57,310 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:23:57,310 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:23:57,311 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:23:57,311 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:23:57,311 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:23:57,312 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:23:57,312 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:23:57,312 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:23:57,313 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:23:57,314 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:23:57,314 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:23:57,314 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:23:57,314 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:23:57,315 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:23:57,315 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:23:57,315 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:23:57,315 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:23:57,316 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:23:57,316 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:23:57,316 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:23:57,317 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:23:57,317 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:23:57,317 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:23:57,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:23:57,318 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:23:57,318 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:23:57,318 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:23:57,319 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:23:57,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:23:57,319 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:23:57,319 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:23:57,320 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:23:57,320 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_751fdeb8-3a98-4cf8-92b7-3f9de83fab83/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751fdeb8-3a98-4cf8-92b7-3f9de83fab83/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0edc3db25587eb2dcb44164977e2a8fa1ed85700 [2021-10-11 02:23:57,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:23:57,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:23:57,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:23:57,614 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:23:57,617 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:23:57,618 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751fdeb8-3a98-4cf8-92b7-3f9de83fab83/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/loop-acceleration/array_1-2.c [2021-10-11 02:23:57,702 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751fdeb8-3a98-4cf8-92b7-3f9de83fab83/bin/utaipan-WLngWcDbfI/data/65ebd41ad/2c5562dac85e4d30b048811853aacbb6/FLAGa302b7995 [2021-10-11 02:23:58,183 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:23:58,184 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751fdeb8-3a98-4cf8-92b7-3f9de83fab83/sv-benchmarks/c/loop-acceleration/array_1-2.c [2021-10-11 02:23:58,189 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751fdeb8-3a98-4cf8-92b7-3f9de83fab83/bin/utaipan-WLngWcDbfI/data/65ebd41ad/2c5562dac85e4d30b048811853aacbb6/FLAGa302b7995 [2021-10-11 02:23:58,571 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751fdeb8-3a98-4cf8-92b7-3f9de83fab83/bin/utaipan-WLngWcDbfI/data/65ebd41ad/2c5562dac85e4d30b048811853aacbb6 [2021-10-11 02:23:58,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:23:58,575 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:23:58,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:58,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:23:58,594 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:23:58,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:58" (1/1) ... [2021-10-11 02:23:58,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47a823db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:58, skipping insertion in model container [2021-10-11 02:23:58,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:58" (1/1) ... [2021-10-11 02:23:58,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:23:58,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:23:58,791 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_751fdeb8-3a98-4cf8-92b7-3f9de83fab83/sv-benchmarks/c/loop-acceleration/array_1-2.c[321,334] [2021-10-11 02:23:58,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:58,812 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:23:58,824 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_751fdeb8-3a98-4cf8-92b7-3f9de83fab83/sv-benchmarks/c/loop-acceleration/array_1-2.c[321,334] [2021-10-11 02:23:58,828 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:58,842 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:23:58,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:58 WrapperNode [2021-10-11 02:23:58,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:58,844 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:23:58,844 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:23:58,844 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:23:58,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:58" (1/1) ... [2021-10-11 02:23:58,858 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:58" (1/1) ... [2021-10-11 02:23:58,875 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:23:58,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:23:58,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:23:58,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:23:58,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:58" (1/1) ... [2021-10-11 02:23:58,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:58" (1/1) ... [2021-10-11 02:23:58,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:58" (1/1) ... [2021-10-11 02:23:58,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:58" (1/1) ... [2021-10-11 02:23:58,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:58" (1/1) ... [2021-10-11 02:23:58,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:58" (1/1) ... [2021-10-11 02:23:58,896 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:58" (1/1) ... [2021-10-11 02:23:58,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:23:58,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:23:58,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:23:58,899 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:23:58,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:58" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751fdeb8-3a98-4cf8-92b7-3f9de83fab83/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 02:23:58,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:23:58,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:23:58,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:23:58,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:23:58,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:23:58,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:23:58,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:23:59,260 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:23:59,261 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:23:59,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:59 BoogieIcfgContainer [2021-10-11 02:23:59,263 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:23:59,265 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:23:59,265 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:23:59,269 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:23:59,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:23:58" (1/3) ... [2021-10-11 02:23:59,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6366d09d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:23:59, skipping insertion in model container [2021-10-11 02:23:59,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:58" (2/3) ... [2021-10-11 02:23:59,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6366d09d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:23:59, skipping insertion in model container [2021-10-11 02:23:59,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:59" (3/3) ... [2021-10-11 02:23:59,273 INFO L111 eAbstractionObserver]: Analyzing ICFG array_1-2.c [2021-10-11 02:23:59,295 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:23:59,305 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:23:59,317 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:23:59,347 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:23:59,347 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:23:59,347 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:23:59,347 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:23:59,347 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:23:59,348 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:23:59,348 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:23:59,348 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:23:59,361 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2021-10-11 02:23:59,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:23:59,367 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:59,368 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:23:59,368 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:59,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:59,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1882248, now seen corresponding path program 1 times [2021-10-11 02:23:59,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:59,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967183644] [2021-10-11 02:23:59,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:59,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:59,621 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 02:23:59,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967183644] [2021-10-11 02:23:59,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:59,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:59,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428601674] [2021-10-11 02:23:59,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:59,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:59,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:59,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:59,660 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2021-10-11 02:23:59,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:59,682 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2021-10-11 02:23:59,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:59,684 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-10-11 02:23:59,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:59,691 INFO L225 Difference]: With dead ends: 13 [2021-10-11 02:23:59,692 INFO L226 Difference]: Without dead ends: 6 [2021-10-11 02:23:59,695 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 [2021-10-11 02:23:59,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2021-10-11 02:23:59,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2021-10-11 02:23:59,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-11 02:23:59,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2021-10-11 02:23:59,725 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2021-10-11 02:23:59,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:59,725 INFO L481 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2021-10-11 02:23:59,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:59,725 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2021-10-11 02:23:59,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:23:59,726 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:59,726 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:23:59,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:23:59,727 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:59,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:59,728 INFO L82 PathProgramCache]: Analyzing trace with hash 58306402, now seen corresponding path program 1 times [2021-10-11 02:23:59,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:59,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657275244] [2021-10-11 02:23:59,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:59,770 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 02:23:59,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657275244] [2021-10-11 02:23:59,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639647310] [2021-10-11 02:23:59,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751fdeb8-3a98-4cf8-92b7-3f9de83fab83/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 02:23:59,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:59,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:23:59,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:59,926 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 02:23:59,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:23:59,964 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 02:23:59,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1652664826] [2021-10-11 02:23:59,989 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2021-10-11 02:23:59,989 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:23:59,994 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:24:00,000 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:24:00,001 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:24:00,719 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:24:00,851 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2021-10-11 02:24:01,060 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2021-10-11 02:24:01,063 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:24:01,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:24:01,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-10-11 02:24:01,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444332063] [2021-10-11 02:24:01,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:24:01,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:01,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:24:01,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:24:01,067 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 6 states. [2021-10-11 02:24:01,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:01,082 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2021-10-11 02:24:01,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:24:01,083 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2021-10-11 02:24:01,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:01,084 INFO L225 Difference]: With dead ends: 12 [2021-10-11 02:24:01,084 INFO L226 Difference]: Without dead ends: 9 [2021-10-11 02:24:01,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:24:01,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-11 02:24:01,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-11 02:24:01,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-11 02:24:01,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-10-11 02:24:01,088 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2021-10-11 02:24:01,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:01,088 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-10-11 02:24:01,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:24:01,089 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-10-11 02:24:01,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:24:01,089 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:01,089 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2021-10-11 02:24:01,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-11 02:24:01,306 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:01,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:01,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1796251400, now seen corresponding path program 2 times [2021-10-11 02:24:01,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:01,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752156997] [2021-10-11 02:24:01,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:01,372 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:01,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752156997] [2021-10-11 02:24:01,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062246272] [2021-10-11 02:24:01,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751fdeb8-3a98-4cf8-92b7-3f9de83fab83/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:24:01,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-11 02:24:01,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 02:24:01,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-11 02:24:01,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:24:01,529 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-11 02:24:01,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:24:01,593 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-11 02:24:01,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:24:01,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [6] total 11 [2021-10-11 02:24:01,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87770436] [2021-10-11 02:24:01,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:24:01,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:01,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:24:01,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-10-11 02:24:01,598 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2021-10-11 02:24:03,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:03,646 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2021-10-11 02:24:03,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:24:03,646 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2021-10-11 02:24:03,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:03,646 INFO L225 Difference]: With dead ends: 9 [2021-10-11 02:24:03,646 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:24:03,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-11 02:24:03,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:24:03,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:24:03,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:24:03,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:24:03,648 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2021-10-11 02:24:03,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:03,648 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:24:03,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:24:03,649 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:24:03,649 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:24:03,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-11 02:24:03,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:24:03,882 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:24:03,882 INFO L262 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2021-10-11 02:24:03,882 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:24:03,883 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2021-10-11 02:24:03,883 INFO L258 CegarLoopResult]: At program point L16-3(lines 16 18) the Hoare annotation is: (or (<= ULTIMATE.start_main_~i~0 0) (exists ((v_ULTIMATE.start_main_~i~0_22 Int)) (and (= v_ULTIMATE.start_main_~i~0_22 (select (select |#memory_int| |ULTIMATE.start_main_~#A~0.base|) (+ |ULTIMATE.start_main_~#A~0.offset| (* v_ULTIMATE.start_main_~i~0_22 4)))) (< v_ULTIMATE.start_main_~i~0_22 1024) (<= ULTIMATE.start_main_~i~0 (+ v_ULTIMATE.start_main_~i~0_22 1))))) [2021-10-11 02:24:03,883 INFO L262 CegarLoopResult]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-10-11 02:24:03,883 INFO L265 CegarLoopResult]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2021-10-11 02:24:03,890 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] [2021-10-11 02:24:03,891 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] [2021-10-11 02:24:03,892 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] [2021-10-11 02:24:03,892 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] [2021-10-11 02:24:03,898 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] [2021-10-11 02:24:03,898 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] [2021-10-11 02:24:03,899 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] [2021-10-11 02:24:03,899 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] [2021-10-11 02:24:03,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:24:03 BoogieIcfgContainer [2021-10-11 02:24:03,901 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:24:03,902 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:24:03,902 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:24:03,902 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:24:03,903 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:59" (3/4) ... [2021-10-11 02:24:03,906 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:24:03,913 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-10-11 02:24:03,914 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-11 02:24:03,914 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:24:03,914 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:24:03,935 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: i <= 0 || (\exists v_ULTIMATE.start_main_~i~0_22 : int :: (v_ULTIMATE.start_main_~i~0_22 == unknown-#memory_int-unknown[A][A + v_ULTIMATE.start_main_~i~0_22 * 4] && v_ULTIMATE.start_main_~i~0_22 < 1024) && i <= v_ULTIMATE.start_main_~i~0_22 + 1) [2021-10-11 02:24:03,943 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751fdeb8-3a98-4cf8-92b7-3f9de83fab83/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:24:03,943 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:24:03,945 INFO L168 Benchmark]: Toolchain (without parser) took 5368.86 ms. Allocated memory was 92.3 MB in the beginning and 127.9 MB in the end (delta: 35.7 MB). Free memory was 57.6 MB in the beginning and 60.5 MB in the end (delta: -2.9 MB). Peak memory consumption was 31.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:03,945 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 92.3 MB. Free memory was 63.0 MB in the beginning and 63.0 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:03,946 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.09 ms. Allocated memory was 92.3 MB in the beginning and 127.9 MB in the end (delta: 35.7 MB). Free memory was 57.3 MB in the beginning and 103.2 MB in the end (delta: -45.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:03,946 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.32 ms. Allocated memory is still 127.9 MB. Free memory was 103.2 MB in the beginning and 101.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:03,947 INFO L168 Benchmark]: Boogie Preprocessor took 21.92 ms. Allocated memory is still 127.9 MB. Free memory was 101.7 MB in the beginning and 101.1 MB in the end (delta: 565.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:03,948 INFO L168 Benchmark]: RCFGBuilder took 365.15 ms. Allocated memory is still 127.9 MB. Free memory was 101.1 MB in the beginning and 85.6 MB in the end (delta: 15.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:03,948 INFO L168 Benchmark]: TraceAbstraction took 4636.62 ms. Allocated memory is still 127.9 MB. Free memory was 84.9 MB in the beginning and 62.6 MB in the end (delta: 22.3 MB). Peak memory consumption was 23.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:03,949 INFO L168 Benchmark]: Witness Printer took 41.41 ms. Allocated memory is still 127.9 MB. Free memory was 62.6 MB in the beginning and 60.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:03,952 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 92.3 MB. Free memory was 63.0 MB in the beginning and 63.0 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 252.09 ms. Allocated memory was 92.3 MB in the beginning and 127.9 MB in the end (delta: 35.7 MB). Free memory was 57.3 MB in the beginning and 103.2 MB in the end (delta: -45.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.32 ms. Allocated memory is still 127.9 MB. Free memory was 103.2 MB in the beginning and 101.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.92 ms. Allocated memory is still 127.9 MB. Free memory was 101.7 MB in the beginning and 101.1 MB in the end (delta: 565.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 365.15 ms. Allocated memory is still 127.9 MB. Free memory was 101.1 MB in the beginning and 85.6 MB in the end (delta: 15.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4636.62 ms. Allocated memory is still 127.9 MB. Free memory was 84.9 MB in the beginning and 62.6 MB in the end (delta: 22.3 MB). Peak memory consumption was 23.8 MB. Max. memory is 16.1 GB. * Witness Printer took 41.41 ms. Allocated memory is still 127.9 MB. Free memory was 62.6 MB in the beginning and 60.5 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.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: 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: 16]: Loop Invariant [2021-10-11 02:24:03,961 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] [2021-10-11 02:24:03,961 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] [2021-10-11 02:24:03,961 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] [2021-10-11 02:24:03,961 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] [2021-10-11 02:24:03,962 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] [2021-10-11 02:24:03,962 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] [2021-10-11 02:24:03,962 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] [2021-10-11 02:24:03,962 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] Derived loop invariant: i <= 0 || (\exists v_ULTIMATE.start_main_~i~0_22 : int :: (v_ULTIMATE.start_main_~i~0_22 == unknown-#memory_int-unknown[A][A + v_ULTIMATE.start_main_~i~0_22 * 4] && v_ULTIMATE.start_main_~i~0_22 < 1024) && i <= v_ULTIMATE.start_main_~i~0_22 + 1) - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.5s, OverallIterations: 3, TraceHistogramMax: 4, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 1 SDslu, 12 SDs, 0 SdLazy, 14 SolverSat, 3 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred 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, 26 HoareAnnotationTreeSize, 2 FomulaSimplifications, 75 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 30 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 36 ConstructedInterpolants, 1 QuantifiedInterpolants, 587 SizeOfPredicates, 10 NumberOfNonLiveVariables, 110 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 20/33 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...