./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/scopes3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3d767dba-2a75-4fde-b32b-013c87d3b408/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3d767dba-2a75-4fde-b32b-013c87d3b408/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3d767dba-2a75-4fde-b32b-013c87d3b408/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3d767dba-2a75-4fde-b32b-013c87d3b408/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/scopes3.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3d767dba-2a75-4fde-b32b-013c87d3b408/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3d767dba-2a75-4fde-b32b-013c87d3b408/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7efcb16e512d7de15a71f6cd895dcd8493c4b646 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:57:45,035 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:57:45,038 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:57:45,119 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:57:45,120 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:57:45,122 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:57:45,124 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:57:45,127 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:57:45,130 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:57:45,131 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:57:45,133 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:57:45,134 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:57:45,135 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:57:45,137 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:57:45,138 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:57:45,140 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:57:45,141 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:57:45,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:57:45,145 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:57:45,148 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:57:45,150 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:57:45,152 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:57:45,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:57:45,155 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:57:45,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:57:45,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:57:45,160 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:57:45,161 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:57:45,162 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:57:45,163 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:57:45,164 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:57:45,165 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:57:45,167 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:57:45,168 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:57:45,169 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:57:45,170 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:57:45,171 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:57:45,171 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:57:45,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:57:45,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:57:45,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:57:45,179 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3d767dba-2a75-4fde-b32b-013c87d3b408/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-11-22 12:57:45,223 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:57:45,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:57:45,225 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:57:45,225 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:57:45,225 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:57:45,226 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:57:45,226 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:57:45,226 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:57:45,226 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:57:45,226 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:57:45,227 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:57:45,228 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:57:45,228 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:57:45,228 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:57:45,228 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:57:45,229 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-22 12:57:45,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-22 12:57:45,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:57:45,230 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:57:45,230 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 12:57:45,230 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:57:45,230 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:57:45,231 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:57:45,231 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-22 12:57:45,231 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-22 12:57:45,231 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-22 12:57:45,231 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:57:45,232 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:57:45,232 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:57:45,232 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:57:45,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:57:45,233 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:57:45,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:57:45,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:57:45,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:57:45,234 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:57:45,234 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:57:45,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:57:45,234 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:57:45,234 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:57:45,235 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_3d767dba-2a75-4fde-b32b-013c87d3b408/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3d767dba-2a75-4fde-b32b-013c87d3b408/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7efcb16e512d7de15a71f6cd895dcd8493c4b646 [2020-11-22 12:57:45,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:57:45,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:57:45,575 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:57:45,576 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:57:45,577 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:57:45,578 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3d767dba-2a75-4fde-b32b-013c87d3b408/bin/utaipan/../../sv-benchmarks/c/memsafety-ext3/scopes3.c [2020-11-22 12:57:45,655 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3d767dba-2a75-4fde-b32b-013c87d3b408/bin/utaipan/data/6db56cd7b/ba4d8a124ce946ccac600ce7000510ce/FLAGacd5c94a6 [2020-11-22 12:57:46,203 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:57:46,204 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3d767dba-2a75-4fde-b32b-013c87d3b408/sv-benchmarks/c/memsafety-ext3/scopes3.c [2020-11-22 12:57:46,214 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3d767dba-2a75-4fde-b32b-013c87d3b408/bin/utaipan/data/6db56cd7b/ba4d8a124ce946ccac600ce7000510ce/FLAGacd5c94a6 [2020-11-22 12:57:46,598 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3d767dba-2a75-4fde-b32b-013c87d3b408/bin/utaipan/data/6db56cd7b/ba4d8a124ce946ccac600ce7000510ce [2020-11-22 12:57:46,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:57:46,602 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:57:46,604 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:57:46,605 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:57:46,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:57:46,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:57:46" (1/1) ... [2020-11-22 12:57:46,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42028861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:46, skipping insertion in model container [2020-11-22 12:57:46,611 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:57:46" (1/1) ... [2020-11-22 12:57:46,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:57:46,629 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:57:46,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:57:46,816 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:57:46,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:57:46,844 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:57:46,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:46 WrapperNode [2020-11-22 12:57:46,845 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:57:46,846 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:57:46,847 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:57:46,847 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:57:46,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:46" (1/1) ... [2020-11-22 12:57:46,862 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:46" (1/1) ... [2020-11-22 12:57:46,879 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:57:46,880 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:57:46,880 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:57:46,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:57:46,889 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:46" (1/1) ... [2020-11-22 12:57:46,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:46" (1/1) ... [2020-11-22 12:57:46,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:46" (1/1) ... [2020-11-22 12:57:46,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:46" (1/1) ... [2020-11-22 12:57:46,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:46" (1/1) ... [2020-11-22 12:57:46,900 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:46" (1/1) ... [2020-11-22 12:57:46,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:46" (1/1) ... [2020-11-22 12:57:46,903 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:57:46,904 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:57:46,904 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:57:46,904 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:57:46,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3d767dba-2a75-4fde-b32b-013c87d3b408/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:57:46,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-22 12:57:46,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:57:46,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:57:46,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:57:46,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 12:57:47,331 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:57:47,331 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-22 12:57:47,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:47 BoogieIcfgContainer [2020-11-22 12:57:47,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:57:47,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:57:47,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:57:47,353 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:57:47,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:57:46" (1/3) ... [2020-11-22 12:57:47,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a8596d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:57:47, skipping insertion in model container [2020-11-22 12:57:47,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:46" (2/3) ... [2020-11-22 12:57:47,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a8596d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:57:47, skipping insertion in model container [2020-11-22 12:57:47,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:47" (3/3) ... [2020-11-22 12:57:47,356 INFO L111 eAbstractionObserver]: Analyzing ICFG scopes3.c [2020-11-22 12:57:47,381 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:57:47,407 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-11-22 12:57:47,421 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-11-22 12:57:47,443 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:57:47,443 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-22 12:57:47,444 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:57:47,444 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:57:47,444 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:57:47,444 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:57:47,444 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:57:47,445 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:57:47,464 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-11-22 12:57:47,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-22 12:57:47,474 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:47,475 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-22 12:57:47,476 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-11-22 12:57:47,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:47,486 INFO L82 PathProgramCache]: Analyzing trace with hash 56060, now seen corresponding path program 1 times [2020-11-22 12:57:47,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:47,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499389212] [2020-11-22 12:57:47,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:47,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:47,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:47,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499389212] [2020-11-22 12:57:47,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:47,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:57:47,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482204502] [2020-11-22 12:57:47,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:47,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:47,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:47,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:47,718 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2020-11-22 12:57:47,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:47,800 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2020-11-22 12:57:47,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:47,802 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-11-22 12:57:47,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:47,811 INFO L225 Difference]: With dead ends: 10 [2020-11-22 12:57:47,811 INFO L226 Difference]: Without dead ends: 9 [2020-11-22 12:57:47,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:47,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-11-22 12:57:47,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-11-22 12:57:47,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-22 12:57:47,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-11-22 12:57:47,855 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 3 [2020-11-22 12:57:47,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:47,856 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-11-22 12:57:47,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:47,856 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-11-22 12:57:47,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-22 12:57:47,856 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:47,857 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-22 12:57:47,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:57:47,857 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-11-22 12:57:47,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:47,860 INFO L82 PathProgramCache]: Analyzing trace with hash 56061, now seen corresponding path program 1 times [2020-11-22 12:57:47,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:47,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019733819] [2020-11-22 12:57:47,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:47,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:47,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:47,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019733819] [2020-11-22 12:57:47,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:47,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:57:47,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896124194] [2020-11-22 12:57:47,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:47,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:47,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:47,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:47,943 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 3 states. [2020-11-22 12:57:47,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:47,999 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-11-22 12:57:48,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:48,000 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-11-22 12:57:48,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:48,001 INFO L225 Difference]: With dead ends: 13 [2020-11-22 12:57:48,001 INFO L226 Difference]: Without dead ends: 13 [2020-11-22 12:57:48,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:48,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-11-22 12:57:48,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 10. [2020-11-22 12:57:48,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-22 12:57:48,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2020-11-22 12:57:48,005 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 3 [2020-11-22 12:57:48,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:48,005 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2020-11-22 12:57:48,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:48,006 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2020-11-22 12:57:48,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-22 12:57:48,006 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:48,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-22 12:57:48,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:57:48,007 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-11-22 12:57:48,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:48,007 INFO L82 PathProgramCache]: Analyzing trace with hash 56719, now seen corresponding path program 1 times [2020-11-22 12:57:48,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:48,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439437111] [2020-11-22 12:57:48,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:48,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:48,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:48,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439437111] [2020-11-22 12:57:48,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:48,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:57:48,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104755309] [2020-11-22 12:57:48,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:48,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:48,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:48,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:48,052 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 3 states. [2020-11-22 12:57:48,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:48,070 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2020-11-22 12:57:48,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:48,071 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-11-22 12:57:48,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:48,072 INFO L225 Difference]: With dead ends: 9 [2020-11-22 12:57:48,072 INFO L226 Difference]: Without dead ends: 9 [2020-11-22 12:57:48,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:48,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-11-22 12:57:48,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2020-11-22 12:57:48,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-22 12:57:48,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-11-22 12:57:48,075 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 3 [2020-11-22 12:57:48,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:48,076 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-11-22 12:57:48,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:48,076 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-11-22 12:57:48,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 12:57:48,076 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:48,077 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-22 12:57:48,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 12:57:48,077 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-11-22 12:57:48,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:48,078 INFO L82 PathProgramCache]: Analyzing trace with hash 53890017, now seen corresponding path program 1 times [2020-11-22 12:57:48,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:48,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215026797] [2020-11-22 12:57:48,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:48,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:48,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:48,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215026797] [2020-11-22 12:57:48,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054232314] [2020-11-22 12:57:48,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3d767dba-2a75-4fde-b32b-013c87d3b408/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:57:48,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:48,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 12:57:48,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:57:48,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:48,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:48,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:48,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1447215954] [2020-11-22 12:57:48,319 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2020-11-22 12:57:48,319 INFO L166 IcfgInterpreter]: Building call graph [2020-11-22 12:57:48,325 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-22 12:57:48,331 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-22 12:57:48,332 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-22 12:57:49,105 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-22 12:57:49,185 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 12:57:49,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-22 12:57:49,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2020-11-22 12:57:49,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052991470] [2020-11-22 12:57:49,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-22 12:57:49,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:49,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-22 12:57:49,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-11-22 12:57:49,188 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 7 states. [2020-11-22 12:57:49,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:49,278 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-11-22 12:57:49,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:57:49,279 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 5 [2020-11-22 12:57:49,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:49,280 INFO L225 Difference]: With dead ends: 14 [2020-11-22 12:57:49,280 INFO L226 Difference]: Without dead ends: 14 [2020-11-22 12:57:49,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-11-22 12:57:49,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-22 12:57:49,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-22 12:57:49,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-22 12:57:49,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-11-22 12:57:49,284 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 5 [2020-11-22 12:57:49,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:49,284 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-11-22 12:57:49,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-22 12:57:49,285 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-11-22 12:57:49,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 12:57:49,285 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:49,285 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1] [2020-11-22 12:57:49,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2020-11-22 12:57:49,498 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-11-22 12:57:49,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:49,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1757760471, now seen corresponding path program 2 times [2020-11-22 12:57:49,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:49,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670949343] [2020-11-22 12:57:49,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:49,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:49,615 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:49,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670949343] [2020-11-22 12:57:49,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830926783] [2020-11-22 12:57:49,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3d767dba-2a75-4fde-b32b-013c87d3b408/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:57:49,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-11-22 12:57:49,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-22 12:57:49,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-22 12:57:49,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:57:49,723 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:49,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:49,837 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:49,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [911133449] [2020-11-22 12:57:49,839 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2020-11-22 12:57:49,840 INFO L166 IcfgInterpreter]: Building call graph [2020-11-22 12:57:49,840 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-22 12:57:49,840 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-22 12:57:49,840 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-22 12:57:50,296 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-22 12:57:50,357 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 12:57:50,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-22 12:57:50,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2020-11-22 12:57:50,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377785036] [2020-11-22 12:57:50,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-22 12:57:50,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:50,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-22 12:57:50,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-11-22 12:57:50,360 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2020-11-22 12:57:50,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:50,453 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-11-22 12:57:50,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-22 12:57:50,456 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-11-22 12:57:50,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:50,457 INFO L225 Difference]: With dead ends: 26 [2020-11-22 12:57:50,457 INFO L226 Difference]: Without dead ends: 26 [2020-11-22 12:57:50,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-11-22 12:57:50,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-22 12:57:50,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-11-22 12:57:50,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-22 12:57:50,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-11-22 12:57:50,464 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 11 [2020-11-22 12:57:50,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:50,464 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-11-22 12:57:50,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-22 12:57:50,465 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-11-22 12:57:50,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-22 12:57:50,467 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:50,473 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1] [2020-11-22 12:57:50,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-11-22 12:57:50,693 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-11-22 12:57:50,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:50,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1275509315, now seen corresponding path program 3 times [2020-11-22 12:57:50,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:50,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827571884] [2020-11-22 12:57:50,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:50,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:57:50,797 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:57:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:57:50,871 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:57:50,915 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 12:57:50,915 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 12:57:50,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-11-22 12:57:50,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:57:50 BoogieIcfgContainer [2020-11-22 12:57:50,947 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:57:50,948 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:57:50,948 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:57:50,948 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:57:50,949 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:47" (3/4) ... [2020-11-22 12:57:50,951 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 12:57:51,001 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3d767dba-2a75-4fde-b32b-013c87d3b408/bin/utaipan/witness.graphml [2020-11-22 12:57:51,002 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:57:51,003 INFO L168 Benchmark]: Toolchain (without parser) took 4400.00 ms. Allocated memory was 92.3 MB in the beginning and 132.1 MB in the end (delta: 39.8 MB). Free memory was 62.1 MB in the beginning and 104.4 MB in the end (delta: -42.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:57:51,003 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 92.3 MB. Free memory was 52.6 MB in the beginning and 52.5 MB in the end (delta: 39.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:57:51,004 INFO L168 Benchmark]: CACSL2BoogieTranslator took 241.29 ms. Allocated memory is still 92.3 MB. Free memory was 62.1 MB in the beginning and 71.5 MB in the end (delta: -9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:51,004 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.09 ms. Allocated memory is still 92.3 MB. Free memory was 71.5 MB in the beginning and 69.8 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:57:51,005 INFO L168 Benchmark]: Boogie Preprocessor took 22.70 ms. Allocated memory is still 92.3 MB. Free memory was 69.8 MB in the beginning and 69.0 MB in the end (delta: 839.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:51,005 INFO L168 Benchmark]: RCFGBuilder took 430.36 ms. Allocated memory is still 92.3 MB. Free memory was 69.0 MB in the beginning and 56.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:51,006 INFO L168 Benchmark]: TraceAbstraction took 3611.56 ms. Allocated memory was 92.3 MB in the beginning and 132.1 MB in the end (delta: 39.8 MB). Free memory was 56.0 MB in the beginning and 106.5 MB in the end (delta: -50.5 MB). Peak memory consumption was 50.0 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:51,006 INFO L168 Benchmark]: Witness Printer took 54.21 ms. Allocated memory is still 132.1 MB. Free memory was 106.5 MB in the beginning and 104.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:51,008 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 92.3 MB. Free memory was 52.6 MB in the beginning and 52.5 MB in the end (delta: 39.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 241.29 ms. Allocated memory is still 92.3 MB. Free memory was 62.1 MB in the beginning and 71.5 MB in the end (delta: -9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.09 ms. Allocated memory is still 92.3 MB. Free memory was 71.5 MB in the beginning and 69.8 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.70 ms. Allocated memory is still 92.3 MB. Free memory was 69.8 MB in the beginning and 69.0 MB in the end (delta: 839.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 430.36 ms. Allocated memory is still 92.3 MB. Free memory was 69.0 MB in the beginning and 56.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3611.56 ms. Allocated memory was 92.3 MB in the beginning and 132.1 MB in the end (delta: 39.8 MB). Free memory was 56.0 MB in the beginning and 106.5 MB in the end (delta: -50.5 MB). Peak memory consumption was 50.0 MB. Max. memory is 16.1 GB. * Witness Printer took 54.21 ms. Allocated memory is still 132.1 MB. Free memory was 106.5 MB in the beginning and 104.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L2] int* p; [L3] int i = 0; [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a [L6] p[0] = 1 [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a [L6] p[0] = 1 [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a [L6] p[0] = 1 [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a [L6] p[0] = 1 [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a [L6] p[0] = 1 [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a [L6] p[0] = 1 [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a [L6] p[0] = 1 [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a [L6] p[0] = 1 [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a [L6] p[0] = 1 [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a [L6] p[0] = 1 [L3] i++ [L3] COND FALSE !(i < 10) [L8] p[0] = 2 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.4s, OverallIterations: 6, TraceHistogramMax: 10, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 23 SDslu, 21 SDs, 0 SdLazy, 60 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=5, 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, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 1000 SizeOfPredicates, 2 NumberOfNonLiveVariables, 131 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 0/51 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 incorrect! Received shutdown request...