./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.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_fe5ba09d-1445-4218-9b90-691ba85dcc6d/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5ba09d-1445-4218-9b90-691ba85dcc6d/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_fe5ba09d-1445-4218-9b90-691ba85dcc6d/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5ba09d-1445-4218-9b90-691ba85dcc6d/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5ba09d-1445-4218-9b90-691ba85dcc6d/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_fe5ba09d-1445-4218-9b90-691ba85dcc6d/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 8c573b473fe5d13973daf8eaca36a6666498a98a ................................................................................................................................................................................................................................................................................................................................................................................................................. 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 02:30:50,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:30:50,129 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:30:50,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:30:50,160 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:30:50,161 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:30:50,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:30:50,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:30:50,168 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:30:50,169 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:30:50,170 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:30:50,172 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:30:50,172 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:30:50,173 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:30:50,175 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:30:50,176 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:30:50,177 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:30:50,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:30:50,180 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:30:50,183 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:30:50,185 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:30:50,188 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:30:50,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:30:50,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:30:50,199 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:30:50,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:30:50,201 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:30:50,206 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:30:50,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:30:50,211 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:30:50,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:30:50,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:30:50,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:30:50,216 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:30:50,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:30:50,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:30:50,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:30:50,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:30:50,220 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:30:50,221 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:30:50,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:30:50,224 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5ba09d-1445-4218-9b90-691ba85dcc6d/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:30:50,269 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:30:50,270 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:30:50,270 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:30:50,271 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:30:50,271 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:30:50,271 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:30:50,271 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:30:50,272 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:30:50,272 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:30:50,272 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:30:50,272 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:30:50,272 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:30:50,273 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:30:50,273 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:30:50,273 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:30:50,274 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:30:50,274 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:30:50,274 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:30:50,275 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:30:50,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:30:50,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:30:50,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:30:50,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:30:50,276 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:30:50,276 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:30:50,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:30:50,276 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:30:50,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:30:50,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:30:50,277 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:30:50,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:30:50,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:30:50,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:30:50,278 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:30:50,278 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:30:50,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:30:50,279 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:30:50,279 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:30:50,279 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:30:50,279 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_fe5ba09d-1445-4218-9b90-691ba85dcc6d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5ba09d-1445-4218-9b90-691ba85dcc6d/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c573b473fe5d13973daf8eaca36a6666498a98a [2021-10-11 02:30:50,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:30:50,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:30:50,602 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:30:50,603 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:30:50,604 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:30:50,605 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5ba09d-1445-4218-9b90-691ba85dcc6d/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i [2021-10-11 02:30:50,702 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5ba09d-1445-4218-9b90-691ba85dcc6d/bin/utaipan-WLngWcDbfI/data/d7f661ea8/bfd14c7fbe9b4b7eaf4d052d8a1e7aa8/FLAGdb07067a4 [2021-10-11 02:30:51,155 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:30:51,156 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5ba09d-1445-4218-9b90-691ba85dcc6d/sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i [2021-10-11 02:30:51,162 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5ba09d-1445-4218-9b90-691ba85dcc6d/bin/utaipan-WLngWcDbfI/data/d7f661ea8/bfd14c7fbe9b4b7eaf4d052d8a1e7aa8/FLAGdb07067a4 [2021-10-11 02:30:51,651 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5ba09d-1445-4218-9b90-691ba85dcc6d/bin/utaipan-WLngWcDbfI/data/d7f661ea8/bfd14c7fbe9b4b7eaf4d052d8a1e7aa8 [2021-10-11 02:30:51,654 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:30:51,656 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:30:51,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:30:51,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:30:51,661 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:30:51,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:30:51" (1/1) ... [2021-10-11 02:30:51,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ea428c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:51, skipping insertion in model container [2021-10-11 02:30:51,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:30:51" (1/1) ... [2021-10-11 02:30:51,671 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:30:51,687 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:30:51,846 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_fe5ba09d-1445-4218-9b90-691ba85dcc6d/sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i[893,906] [2021-10-11 02:30:51,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:30:51,882 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:30:51,900 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_fe5ba09d-1445-4218-9b90-691ba85dcc6d/sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i[893,906] [2021-10-11 02:30:51,922 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:30:51,943 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:30:51,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:51 WrapperNode [2021-10-11 02:30:51,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:30:51,945 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:30:51,945 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:30:51,945 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:30:51,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:51" (1/1) ... [2021-10-11 02:30:51,960 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:51" (1/1) ... [2021-10-11 02:30:51,978 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:30:51,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:30:51,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:30:51,979 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:30:51,988 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:51" (1/1) ... [2021-10-11 02:30:51,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:51" (1/1) ... [2021-10-11 02:30:51,990 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:51" (1/1) ... [2021-10-11 02:30:51,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:51" (1/1) ... [2021-10-11 02:30:51,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:51" (1/1) ... [2021-10-11 02:30:51,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:51" (1/1) ... [2021-10-11 02:30:52,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:51" (1/1) ... [2021-10-11 02:30:52,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:30:52,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:30:52,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:30:52,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:30:52,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:51" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5ba09d-1445-4218-9b90-691ba85dcc6d/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 02:30:52,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:30:52,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:30:52,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:30:52,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:30:52,371 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:30:52,372 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-11 02:30:52,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:30:52 BoogieIcfgContainer [2021-10-11 02:30:52,374 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:30:52,376 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:30:52,376 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:30:52,380 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:30:52,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:30:51" (1/3) ... [2021-10-11 02:30:52,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ed316c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:30:52, skipping insertion in model container [2021-10-11 02:30:52,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:51" (2/3) ... [2021-10-11 02:30:52,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ed316c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:30:52, skipping insertion in model container [2021-10-11 02:30:52,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:30:52" (3/3) ... [2021-10-11 02:30:52,383 INFO L111 eAbstractionObserver]: Analyzing ICFG MADWiFi-encode_ie_ok.i [2021-10-11 02:30:52,397 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:30:52,400 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-10-11 02:30:52,412 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-11 02:30:52,437 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:30:52,437 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:30:52,437 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:30:52,437 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:30:52,438 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:30:52,438 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:30:52,438 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:30:52,438 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:30:52,451 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2021-10-11 02:30:52,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:30:52,456 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:52,457 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:52,457 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:52,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:52,463 INFO L82 PathProgramCache]: Analyzing trace with hash -2127119150, now seen corresponding path program 1 times [2021-10-11 02:30:52,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:52,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249198342] [2021-10-11 02:30:52,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:52,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:52,705 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 02:30:52,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249198342] [2021-10-11 02:30:52,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:52,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:30:52,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454858287] [2021-10-11 02:30:52,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:30:52,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:52,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:30:52,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:30:52,740 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2021-10-11 02:30:52,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:52,868 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2021-10-11 02:30:52,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:30:52,870 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-10-11 02:30:52,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:52,885 INFO L225 Difference]: With dead ends: 36 [2021-10-11 02:30:52,887 INFO L226 Difference]: Without dead ends: 17 [2021-10-11 02:30:52,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:30:52,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-11 02:30:52,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-10-11 02:30:52,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-11 02:30:52,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-10-11 02:30:52,930 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 12 [2021-10-11 02:30:52,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:52,930 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-10-11 02:30:52,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:30:52,931 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-10-11 02:30:52,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 02:30:52,931 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:52,932 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:52,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:30:52,934 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:52,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:52,947 INFO L82 PathProgramCache]: Analyzing trace with hash 243086613, now seen corresponding path program 1 times [2021-10-11 02:30:52,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:52,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781868093] [2021-10-11 02:30:52,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:53,093 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 02:30:53,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781868093] [2021-10-11 02:30:53,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:53,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:30:53,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125715738] [2021-10-11 02:30:53,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:30:53,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:53,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:30:53,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:30:53,101 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 5 states. [2021-10-11 02:30:53,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:53,192 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2021-10-11 02:30:53,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:30:53,193 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2021-10-11 02:30:53,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:53,196 INFO L225 Difference]: With dead ends: 23 [2021-10-11 02:30:53,196 INFO L226 Difference]: Without dead ends: 21 [2021-10-11 02:30:53,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:30:53,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-11 02:30:53,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2021-10-11 02:30:53,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-10-11 02:30:53,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2021-10-11 02:30:53,212 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 14 [2021-10-11 02:30:53,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:53,212 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2021-10-11 02:30:53,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:30:53,213 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2021-10-11 02:30:53,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-11 02:30:53,214 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:53,214 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:53,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:30:53,216 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:53,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:53,220 INFO L82 PathProgramCache]: Analyzing trace with hash 829495963, now seen corresponding path program 1 times [2021-10-11 02:30:53,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:53,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737998637] [2021-10-11 02:30:53,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:53,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:53,381 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:53,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737998637] [2021-10-11 02:30:53,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602695120] [2021-10-11 02:30:53,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5ba09d-1445-4218-9b90-691ba85dcc6d/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 02:30:53,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:53,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-11 02:30:53,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:30:53,573 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:53,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:30:53,594 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:30:53,715 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:53,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1469785045] [2021-10-11 02:30:53,757 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2021-10-11 02:30:53,759 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:30:53,785 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:30:53,793 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:30:53,794 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:30:54,228 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:30:54,399 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2021-10-11 02:30:54,545 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2021-10-11 02:30:54,696 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2021-10-11 02:30:54,854 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2021-10-11 02:30:55,019 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2021-10-11 02:30:55,206 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2021-10-11 02:30:55,412 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2021-10-11 02:30:55,619 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2021-10-11 02:30:55,820 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2021-10-11 02:30:55,972 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 34 [2021-10-11 02:30:56,156 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-10-11 02:30:56,385 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2021-10-11 02:30:56,574 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2021-10-11 02:30:56,625 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:30:56,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:30:56,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-10-11 02:30:56,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558824546] [2021-10-11 02:30:56,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-10-11 02:30:56,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:56,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-11 02:30:56,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2021-10-11 02:30:56,629 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 13 states. [2021-10-11 02:30:56,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:56,954 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2021-10-11 02:30:56,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-11 02:30:56,955 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 19 [2021-10-11 02:30:56,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:56,955 INFO L225 Difference]: With dead ends: 26 [2021-10-11 02:30:56,955 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:30:56,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 33 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=236, Invalid=1170, Unknown=0, NotChecked=0, Total=1406 [2021-10-11 02:30:56,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:30:56,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:30:56,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:30:56,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:30:56,957 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2021-10-11 02:30:56,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:56,957 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:30:56,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-10-11 02:30:56,957 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:30:56,958 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:30:57,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-11 02:30:57,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:30:57,337 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:30:57,337 INFO L262 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2021-10-11 02:30:57,337 INFO L262 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2021-10-11 02:30:57,337 INFO L262 CegarLoopResult]: For program point L40(lines 25 56) no Hoare annotation was computed. [2021-10-11 02:30:57,338 INFO L262 CegarLoopResult]: For program point L36(line 36) no Hoare annotation was computed. [2021-10-11 02:30:57,338 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:30:57,338 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:30:57,339 INFO L258 CegarLoopResult]: At program point L49-3(lines 49 53) the Hoare annotation is: (let ((.cse1 (<= 1 ULTIMATE.start_main_~p~0)) (.cse2 (<= 1 ULTIMATE.start_main_~leader_len~0)) (.cse0 (+ (* 2 ULTIMATE.start_main_~ielen~0) ULTIMATE.start_main_~p~0))) (or (and (<= .cse0 (+ ULTIMATE.start_main_~bufsize_0~0 (* 2 ULTIMATE.start_main_~i~0))) .cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse2) (and .cse1 (= ULTIMATE.start_main_~i~0 0) .cse2 (<= .cse0 ULTIMATE.start_main_~bufsize_0~0) (<= (+ ULTIMATE.start_main_~bufsize~0 ULTIMATE.start_main_~p~0) ULTIMATE.start_main_~bufsize_0~0)))) [2021-10-11 02:30:57,339 INFO L262 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2021-10-11 02:30:57,339 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:30:57,339 INFO L265 CegarLoopResult]: At program point L54(lines 25 56) the Hoare annotation is: true [2021-10-11 02:30:57,339 INFO L262 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2021-10-11 02:30:57,340 INFO L262 CegarLoopResult]: For program point L38-1(lines 25 56) no Hoare annotation was computed. [2021-10-11 02:30:57,340 INFO L262 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:30:57,342 INFO L258 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: (and (<= (+ (* 2 ULTIMATE.start_main_~ielen~0) ULTIMATE.start_main_~p~0) (+ ULTIMATE.start_main_~bufsize_0~0 (* 2 ULTIMATE.start_main_~i~0))) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 1 ULTIMATE.start_main_~p~0) (<= (+ ULTIMATE.start_main_~p~0 2) ULTIMATE.start_main_~bufsize_0~0) (<= 1 ULTIMATE.start_main_~leader_len~0)) [2021-10-11 02:30:57,342 INFO L262 CegarLoopResult]: For program point L47(lines 47 48) no Hoare annotation was computed. [2021-10-11 02:30:57,342 INFO L262 CegarLoopResult]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:30:57,343 INFO L258 CegarLoopResult]: At program point L18-5(lines 17 22) the Hoare annotation is: (and (<= (+ (* 2 ULTIMATE.start_main_~ielen~0) ULTIMATE.start_main_~p~0) (+ ULTIMATE.start_main_~bufsize_0~0 (* 2 ULTIMATE.start_main_~i~0))) (<= 1 ULTIMATE.start_main_~p~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= (+ ULTIMATE.start_main_~p~0 2) ULTIMATE.start_main_~bufsize_0~0) (<= 1 ULTIMATE.start_main_~leader_len~0)) [2021-10-11 02:30:57,343 INFO L262 CegarLoopResult]: For program point L39(lines 25 56) no Hoare annotation was computed. [2021-10-11 02:30:57,343 INFO L262 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2021-10-11 02:30:57,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:30:57 BoogieIcfgContainer [2021-10-11 02:30:57,371 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:30:57,371 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:30:57,371 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:30:57,372 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:30:57,372 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:30:52" (3/4) ... [2021-10-11 02:30:57,374 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:30:57,382 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-10-11 02:30:57,383 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:30:57,383 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:30:57,383 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:30:57,427 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5ba09d-1445-4218-9b90-691ba85dcc6d/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:30:57,427 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:30:57,428 INFO L168 Benchmark]: Toolchain (without parser) took 5772.38 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 69.2 MB in the beginning and 60.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 30.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:57,429 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 104.9 MB. Free memory was 79.0 MB in the beginning and 79.0 MB in the end (delta: 31.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:30:57,429 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.00 ms. Allocated memory is still 104.9 MB. Free memory was 69.1 MB in the beginning and 80.0 MB in the end (delta: -10.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:57,430 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.23 ms. Allocated memory is still 104.9 MB. Free memory was 80.0 MB in the beginning and 78.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:57,430 INFO L168 Benchmark]: Boogie Preprocessor took 32.48 ms. Allocated memory is still 104.9 MB. Free memory was 78.6 MB in the beginning and 77.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:57,431 INFO L168 Benchmark]: RCFGBuilder took 362.43 ms. Allocated memory is still 104.9 MB. Free memory was 77.4 MB in the beginning and 61.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:57,431 INFO L168 Benchmark]: TraceAbstraction took 4994.72 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 60.6 MB in the beginning and 63.1 MB in the end (delta: -2.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:57,432 INFO L168 Benchmark]: Witness Printer took 56.07 ms. Allocated memory is still 125.8 MB. Free memory was 63.1 MB in the beginning and 60.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:57,435 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 104.9 MB. Free memory was 79.0 MB in the beginning and 79.0 MB in the end (delta: 31.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 287.00 ms. Allocated memory is still 104.9 MB. Free memory was 69.1 MB in the beginning and 80.0 MB in the end (delta: -10.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.23 ms. Allocated memory is still 104.9 MB. Free memory was 80.0 MB in the beginning and 78.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.48 ms. Allocated memory is still 104.9 MB. Free memory was 78.6 MB in the beginning and 77.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 362.43 ms. Allocated memory is still 104.9 MB. Free memory was 77.4 MB in the beginning and 61.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4994.72 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 60.6 MB in the beginning and 63.1 MB in the end (delta: -2.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Witness Printer took 56.07 ms. Allocated memory is still 125.8 MB. Free memory was 63.1 MB in the beginning and 60.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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 2 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((2 * ielen + p <= bufsize_0 + 2 * i && !(0 == cond)) && 1 <= p) && p + 2 <= bufsize_0) && 1 <= leader_len - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((2 * ielen + p <= bufsize_0 + 2 * i && 1 <= p) && 1 <= cond) && p + 2 <= bufsize_0) && 1 <= leader_len - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: (((2 * ielen + p <= bufsize_0 + 2 * i && 1 <= p) && 1 <= cond) && 1 <= leader_len) || ((((1 <= p && i == 0) && 1 <= leader_len) && 2 * ielen + p <= bufsize_0) && bufsize + p <= bufsize_0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.7s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 45 SDtfs, 57 SDslu, 92 SDs, 0 SdLazy, 90 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 37 SyntacticMatches, 5 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 17 NumberOfFragments, 98 HoareAnnotationTreeSize, 4 FomulaSimplifications, 108 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 165 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 5846 SizeOfPredicates, 10 NumberOfNonLiveVariables, 77 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 0/12 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...