./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Arrays03-ValueRestictsIndex-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_37e8aad9-8aa2-4ad7-adef-85f97d56b697/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_37e8aad9-8aa2-4ad7-adef-85f97d56b697/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_37e8aad9-8aa2-4ad7-adef-85f97d56b697/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_37e8aad9-8aa2-4ad7-adef-85f97d56b697/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/Arrays03-ValueRestictsIndex-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_37e8aad9-8aa2-4ad7-adef-85f97d56b697/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_37e8aad9-8aa2-4ad7-adef-85f97d56b697/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 282a32bc5fb3d70423f87a450340f7a26ab0f093 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:38:07,029 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:38:07,031 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:38:07,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:38:07,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:38:07,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:38:07,113 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:38:07,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:38:07,118 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:38:07,119 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:38:07,120 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:38:07,121 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:38:07,122 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:38:07,123 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:38:07,124 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:38:07,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:38:07,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:38:07,128 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:38:07,130 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:38:07,132 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:38:07,134 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:38:07,135 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:38:07,137 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:38:07,138 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:38:07,141 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:38:07,141 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:38:07,146 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:38:07,147 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:38:07,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:38:07,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:38:07,149 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:38:07,150 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:38:07,152 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:38:07,153 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:38:07,155 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:38:07,156 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:38:07,156 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:38:07,157 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:38:07,157 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:38:07,158 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:38:07,159 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:38:07,160 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_37e8aad9-8aa2-4ad7-adef-85f97d56b697/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-11-28 07:38:07,204 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:38:07,205 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:38:07,206 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:38:07,206 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:38:07,206 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:38:07,207 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:38:07,207 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:38:07,207 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:38:07,207 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:38:07,208 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:38:07,209 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:38:07,209 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:38:07,209 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:38:07,210 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:38:07,210 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:38:07,211 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:38:07,211 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 07:38:07,211 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:38:07,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:38:07,212 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:38:07,212 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:38:07,212 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:38:07,212 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-28 07:38:07,213 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:38:07,213 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:38:07,213 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:38:07,213 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:38:07,214 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:38:07,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:38:07,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:38:07,214 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:38:07,215 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:38:07,215 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:38:07,215 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:38:07,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:38:07,216 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:38:07,216 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:38:07,216 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:38:07,216 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_37e8aad9-8aa2-4ad7-adef-85f97d56b697/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_37e8aad9-8aa2-4ad7-adef-85f97d56b697/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 282a32bc5fb3d70423f87a450340f7a26ab0f093 [2020-11-28 07:38:07,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:38:07,498 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:38:07,500 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:38:07,501 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:38:07,504 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:38:07,505 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_37e8aad9-8aa2-4ad7-adef-85f97d56b697/bin/utaipan/../../sv-benchmarks/c/termination-crafted/Arrays03-ValueRestictsIndex-2.c [2020-11-28 07:38:07,603 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_37e8aad9-8aa2-4ad7-adef-85f97d56b697/bin/utaipan/data/a70163b75/3b3ec45390cc4b1f94049a0953562617/FLAG8c04af11c [2020-11-28 07:38:07,983 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:38:07,984 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_37e8aad9-8aa2-4ad7-adef-85f97d56b697/sv-benchmarks/c/termination-crafted/Arrays03-ValueRestictsIndex-2.c [2020-11-28 07:38:07,989 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_37e8aad9-8aa2-4ad7-adef-85f97d56b697/bin/utaipan/data/a70163b75/3b3ec45390cc4b1f94049a0953562617/FLAG8c04af11c [2020-11-28 07:38:08,421 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_37e8aad9-8aa2-4ad7-adef-85f97d56b697/bin/utaipan/data/a70163b75/3b3ec45390cc4b1f94049a0953562617 [2020-11-28 07:38:08,425 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:38:08,427 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:38:08,429 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:38:08,429 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:38:08,433 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:38:08,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:38:08" (1/1) ... [2020-11-28 07:38:08,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d69ca14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:08, skipping insertion in model container [2020-11-28 07:38:08,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:38:08" (1/1) ... [2020-11-28 07:38:08,446 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:38:08,460 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:38:08,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:38:08,635 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:38:08,652 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:38:08,668 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:38:08,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:08 WrapperNode [2020-11-28 07:38:08,668 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:38:08,669 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:38:08,670 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:38:08,670 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:38:08,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:08" (1/1) ... [2020-11-28 07:38:08,680 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:08" (1/1) ... [2020-11-28 07:38:08,697 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:38:08,698 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:38:08,698 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:38:08,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:38:08,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:08" (1/1) ... [2020-11-28 07:38:08,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:08" (1/1) ... [2020-11-28 07:38:08,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:08" (1/1) ... [2020-11-28 07:38:08,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:08" (1/1) ... [2020-11-28 07:38:08,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:08" (1/1) ... [2020-11-28 07:38:08,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:08" (1/1) ... [2020-11-28 07:38:08,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:08" (1/1) ... [2020-11-28 07:38:08,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:38:08,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:38:08,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:38:08,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:38:08,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_37e8aad9-8aa2-4ad7-adef-85f97d56b697/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 [2020-11-28 07:38:08,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 07:38:08,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:38:08,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:38:08,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 07:38:08,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:38:08,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:38:09,189 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:38:09,190 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-28 07:38:09,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:38:09 BoogieIcfgContainer [2020-11-28 07:38:09,192 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:38:09,193 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:38:09,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:38:09,197 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:38:09,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:38:08" (1/3) ... [2020-11-28 07:38:09,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7326bb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:38:09, skipping insertion in model container [2020-11-28 07:38:09,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:08" (2/3) ... [2020-11-28 07:38:09,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7326bb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:38:09, skipping insertion in model container [2020-11-28 07:38:09,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:38:09" (3/3) ... [2020-11-28 07:38:09,200 INFO L111 eAbstractionObserver]: Analyzing ICFG Arrays03-ValueRestictsIndex-2.c [2020-11-28 07:38:09,211 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:38:09,215 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-28 07:38:09,227 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-28 07:38:09,249 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:38:09,249 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:38:09,249 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:38:09,250 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:38:09,250 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:38:09,250 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:38:09,250 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:38:09,250 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:38:09,263 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-11-28 07:38:09,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-28 07:38:09,268 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:09,269 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-28 07:38:09,269 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:38:09,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:09,275 INFO L82 PathProgramCache]: Analyzing trace with hash 87402, now seen corresponding path program 1 times [2020-11-28 07:38:09,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:38:09,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105098494] [2020-11-28 07:38:09,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:38:09,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:09,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:38:09,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105098494] [2020-11-28 07:38:09,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:38:09,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:38:09,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275805693] [2020-11-28 07:38:09,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:38:09,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:38:09,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:38:09,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:38:09,457 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 4 states. [2020-11-28 07:38:09,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:09,529 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2020-11-28 07:38:09,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:38:09,531 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2020-11-28 07:38:09,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:09,544 INFO L225 Difference]: With dead ends: 29 [2020-11-28 07:38:09,546 INFO L226 Difference]: Without dead ends: 17 [2020-11-28 07:38:09,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:38:09,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-28 07:38:09,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2020-11-28 07:38:09,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-28 07:38:09,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-11-28 07:38:09,585 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 3 [2020-11-28 07:38:09,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:09,586 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-11-28 07:38:09,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:38:09,587 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-11-28 07:38:09,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 07:38:09,587 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:09,588 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-28 07:38:09,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:38:09,589 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:38:09,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:09,592 INFO L82 PathProgramCache]: Analyzing trace with hash 2709508, now seen corresponding path program 1 times [2020-11-28 07:38:09,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:38:09,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10362572] [2020-11-28 07:38:09,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:38:09,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:09,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:38:09,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10362572] [2020-11-28 07:38:09,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:38:09,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:38:09,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895566318] [2020-11-28 07:38:09,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:38:09,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:38:09,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:38:09,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:38:09,661 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 4 states. [2020-11-28 07:38:09,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:09,696 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2020-11-28 07:38:09,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:38:09,697 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-11-28 07:38:09,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:09,697 INFO L225 Difference]: With dead ends: 15 [2020-11-28 07:38:09,698 INFO L226 Difference]: Without dead ends: 14 [2020-11-28 07:38:09,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:38:09,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-28 07:38:09,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-28 07:38:09,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-28 07:38:09,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2020-11-28 07:38:09,704 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 4 [2020-11-28 07:38:09,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:09,704 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2020-11-28 07:38:09,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:38:09,705 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2020-11-28 07:38:09,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:38:09,705 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:09,705 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-11-28 07:38:09,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:38:09,706 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:38:09,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:09,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1691127274, now seen corresponding path program 1 times [2020-11-28 07:38:09,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:38:09,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563581140] [2020-11-28 07:38:09,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:38:09,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:09,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 07:38:09,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563581140] [2020-11-28 07:38:09,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:38:09,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:38:09,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269712918] [2020-11-28 07:38:09,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:38:09,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:38:09,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:38:09,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:38:09,782 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 3 states. [2020-11-28 07:38:09,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:09,793 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2020-11-28 07:38:09,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:38:09,795 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-28 07:38:09,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:09,796 INFO L225 Difference]: With dead ends: 14 [2020-11-28 07:38:09,796 INFO L226 Difference]: Without dead ends: 13 [2020-11-28 07:38:09,796 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 [2020-11-28 07:38:09,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-11-28 07:38:09,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2020-11-28 07:38:09,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-28 07:38:09,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2020-11-28 07:38:09,799 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 6 [2020-11-28 07:38:09,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:09,799 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2020-11-28 07:38:09,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:38:09,800 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-11-28 07:38:09,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 07:38:09,800 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:09,800 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:38:09,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:38:09,801 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:38:09,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:09,801 INFO L82 PathProgramCache]: Analyzing trace with hash -402840199, now seen corresponding path program 1 times [2020-11-28 07:38:09,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:38:09,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496703778] [2020-11-28 07:38:09,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:38:09,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:09,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:38:09,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496703778] [2020-11-28 07:38:09,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743574484] [2020-11-28 07:38:09,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_37e8aad9-8aa2-4ad7-adef-85f97d56b697/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 [2020-11-28 07:38:09,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:09,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 07:38:09,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:38:09,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:38:09,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:38:10,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:38:10,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1131746797] [2020-11-28 07:38:10,051 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-11-28 07:38:10,051 INFO L166 IcfgInterpreter]: Building call graph [2020-11-28 07:38:10,056 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-28 07:38:10,062 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-28 07:38:10,062 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-28 07:38:10,655 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-28 07:38:10,849 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2020-11-28 07:38:11,343 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 47 [2020-11-28 07:38:11,496 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-11-28 07:38:11,673 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 36 [2020-11-28 07:38:11,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-28 07:38:11,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 4, 4] total 14 [2020-11-28 07:38:11,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415633411] [2020-11-28 07:38:11,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 07:38:11,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:38:11,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 07:38:11,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-11-28 07:38:11,677 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 9 states. [2020-11-28 07:38:11,881 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2020-11-28 07:38:11,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:11,951 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2020-11-28 07:38:11,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 07:38:11,952 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-11-28 07:38:11,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:11,953 INFO L225 Difference]: With dead ends: 12 [2020-11-28 07:38:11,953 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:38:11,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-11-28 07:38:11,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:38:11,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:38:11,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:38:11,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:38:11,955 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2020-11-28 07:38:11,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:11,955 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:38:11,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 07:38:11,955 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:38:11,955 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:38:12,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2020-11-28 07:38:12,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:38:12,345 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-11-28 07:38:12,432 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2020-11-28 07:38:12,432 INFO L274 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-11-28 07:38:12,432 INFO L274 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-11-28 07:38:12,433 INFO L277 CegarLoopResult]: At program point L19(lines 19 26) the Hoare annotation is: true [2020-11-28 07:38:12,433 INFO L274 CegarLoopResult]: For program point L15-3(line 15) no Hoare annotation was computed. [2020-11-28 07:38:12,433 INFO L274 CegarLoopResult]: For program point L15-4(line 15) no Hoare annotation was computed. [2020-11-28 07:38:12,433 INFO L270 CegarLoopResult]: At program point L15-5(lines 15 17) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~#a~0.base|) (let ((.cse0 (= |#NULL.base| 0)) (.cse1 (= |ULTIMATE.start_main_~#a~0.offset| 0)) (.cse2 (<= 0 (+ ULTIMATE.start_main_~k~0 2147483648))) (.cse3 (= |#NULL.offset| 0)) (.cse4 (<= ULTIMATE.start_main_~k~0 2147483647))) (or (and (= ULTIMATE.start_main_~i~0 0) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#a~0.base|) (= 4192 (select |#length| |ULTIMATE.start_main_~#a~0.base|)) .cse0 .cse1 (< 0 |#StackHeapBarrier|) (= (select |#valid| 0) 0) .cse2 (= (select |#valid| |ULTIMATE.start_main_~#a~0.base|) 1) .cse3 .cse4) (and (<= ULTIMATE.start_main_~i~0 2147483647) .cse0 .cse1 .cse2 (<= 1 ULTIMATE.start_main_~i~0) .cse3 .cse4))) (<= 0 |#StackHeapBarrier|)) [2020-11-28 07:38:12,433 INFO L274 CegarLoopResult]: For program point L15-6(lines 11 28) no Hoare annotation was computed. [2020-11-28 07:38:12,433 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2020-11-28 07:38:12,433 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:38:12,434 INFO L274 CegarLoopResult]: For program point L20-2(lines 20 25) no Hoare annotation was computed. [2020-11-28 07:38:12,434 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2020-11-28 07:38:12,434 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:38:12,434 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2020-11-28 07:38:12,434 INFO L270 CegarLoopResult]: At program point L22-2(lines 22 24) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |ULTIMATE.start_main_~#a~0.base|))) (and (= 23 (select .cse0 |ULTIMATE.start_main_~#a~0.offset|)) (<= ULTIMATE.start_main_~x~0 2147483647) (<= ULTIMATE.start_main_~i~0 2147483647) (<= 0 (+ ULTIMATE.start_main_~x~0 2147483648)) (= |#NULL.base| 0) (= 42 (select .cse0 (+ |ULTIMATE.start_main_~#a~0.offset| (* ULTIMATE.start_main_~k~0 4)))) (<= 0 |ULTIMATE.start_main_~#a~0.base|) (<= 1048 ULTIMATE.start_main_~i~0) (= |ULTIMATE.start_main_~#a~0.offset| 0) (= |#NULL.offset| 0) (<= 0 ULTIMATE.start_main_~k~0) (< ULTIMATE.start_main_~k~0 1048) (<= 0 |#StackHeapBarrier|))) [2020-11-28 07:38:12,455 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:38:12,456 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:38:12,456 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:38:12,457 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:38:12,457 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:38:12,458 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:38:12,458 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:38:12,459 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:38:12,468 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:38:12,468 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:38:12,469 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:38:12,469 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:38:12,469 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:38:12,469 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:38:12,470 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:38:12,470 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:38:12,474 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:38:12,474 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:38:12,475 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:38:12,480 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:38:12,480 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:38:12,481 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:38:12,485 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:38:12,485 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:38:12,486 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:38:12,486 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:38:12,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:38:12 BoogieIcfgContainer [2020-11-28 07:38:12,497 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:38:12,498 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:38:12,498 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:38:12,498 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:38:12,499 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:38:09" (3/4) ... [2020-11-28 07:38:12,502 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:38:12,512 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-28 07:38:12,512 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 07:38:12,518 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 07:38:12,571 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_37e8aad9-8aa2-4ad7-adef-85f97d56b697/bin/utaipan/witness.graphml [2020-11-28 07:38:12,572 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:38:12,573 INFO L168 Benchmark]: Toolchain (without parser) took 4145.24 ms. Allocated memory was 88.1 MB in the beginning and 151.0 MB in the end (delta: 62.9 MB). Free memory was 55.4 MB in the beginning and 77.3 MB in the end (delta: -21.9 MB). Peak memory consumption was 39.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:12,573 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 88.1 MB. Free memory was 45.5 MB in the beginning and 45.4 MB in the end (delta: 75.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:38:12,574 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.66 ms. Allocated memory was 88.1 MB in the beginning and 125.8 MB in the end (delta: 37.7 MB). Free memory was 55.2 MB in the beginning and 102.4 MB in the end (delta: -47.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:12,574 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.84 ms. Allocated memory is still 125.8 MB. Free memory was 102.4 MB in the beginning and 101.7 MB in the end (delta: 757.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:38:12,575 INFO L168 Benchmark]: Boogie Preprocessor took 20.48 ms. Allocated memory is still 125.8 MB. Free memory was 101.1 MB in the beginning and 100.3 MB in the end (delta: 759.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:12,575 INFO L168 Benchmark]: RCFGBuilder took 472.92 ms. Allocated memory is still 125.8 MB. Free memory was 100.3 MB in the beginning and 83.5 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:12,576 INFO L168 Benchmark]: TraceAbstraction took 3304.17 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 82.8 MB in the beginning and 80.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 30.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:12,576 INFO L168 Benchmark]: Witness Printer took 73.80 ms. Allocated memory is still 151.0 MB. Free memory was 80.5 MB in the beginning and 77.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:12,579 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 88.1 MB. Free memory was 45.5 MB in the beginning and 45.4 MB in the end (delta: 75.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 239.66 ms. Allocated memory was 88.1 MB in the beginning and 125.8 MB in the end (delta: 37.7 MB). Free memory was 55.2 MB in the beginning and 102.4 MB in the end (delta: -47.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 27.84 ms. Allocated memory is still 125.8 MB. Free memory was 102.4 MB in the beginning and 101.7 MB in the end (delta: 757.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.48 ms. Allocated memory is still 125.8 MB. Free memory was 101.1 MB in the beginning and 100.3 MB in the end (delta: 759.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 472.92 ms. Allocated memory is still 125.8 MB. Free memory was 100.3 MB in the beginning and 83.5 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3304.17 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 82.8 MB in the beginning and 80.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 30.0 MB. Max. memory is 16.1 GB. * Witness Printer took 73.80 ms. Allocated memory is still 151.0 MB. Free memory was 80.5 MB in the beginning and 77.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant [2020-11-28 07:38:12,589 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:38:12,589 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:38:12,590 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:38:12,590 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:38:12,590 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:38:12,590 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:38:12,590 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:38:12,590 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:38:12,591 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:38:12,592 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:38:12,592 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:38:12,592 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:38:12,592 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:38:12,592 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:38:12,592 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:38:12,592 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier Derived loop invariant: (0 <= a && (((((((((((i == 0 && unknown-#StackHeapBarrier-unknown < a) && 4192 == unknown-#length-unknown[a]) && #NULL == 0) && a == 0) && 0 < unknown-#StackHeapBarrier-unknown) && \valid[0] == 0) && 0 <= k + 2147483648) && \valid[a] == 1) && #NULL == 0) && k <= 2147483647) || ((((((i <= 2147483647 && #NULL == 0) && a == 0) && 0 <= k + 2147483648) && 1 <= i) && #NULL == 0) && k <= 2147483647))) && 0 <= unknown-#StackHeapBarrier-unknown - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant [2020-11-28 07:38:12,593 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:38:12,593 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:38:12,593 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:38:12,593 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:38:12,593 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:38:12,594 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:38:12,594 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:38:12,594 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:38:12,595 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:38:12,595 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier Derived loop invariant: (((((((((((23 == unknown-#memory_int-unknown[a][a] && x <= 2147483647) && i <= 2147483647) && 0 <= x + 2147483648) && #NULL == 0) && 42 == unknown-#memory_int-unknown[a][a + k * 4]) && 0 <= a) && 1048 <= i) && a == 0) && #NULL == 0) && 0 <= k) && k < 1048) && 0 <= unknown-#StackHeapBarrier-unknown - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.9s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 31 SDslu, 41 SDs, 0 SdLazy, 54 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 6 NumberOfFragments, 129 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 87 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 458 SizeOfPredicates, 2 NumberOfNonLiveVariables, 43 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 2/5 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: OVERALL_TIME[ms]: 605, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 9, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 18, TOOLS_POST_TIME[ms]: 333, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 18, TOOLS_QUANTIFIERELIM_TIME[ms]: 323, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 81, FLUID_QUERY_TIME[ms]: 3, FLUID_QUERIES: 35, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 2, DOMAIN_JOIN_TIME[ms]: 51, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME[ms]: 148, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME[ms]: 13, DOMAIN_ISBOTTOM_APPLICATIONS: 9, DOMAIN_ISBOTTOM_TIME[ms]: 14, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 362, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 361, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 2, PATH_EXPR_TIME[ms]: 3, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 9, DAG_COMPRESSION_PROCESSED_NODES: 88, DAG_COMPRESSION_RETAINED_NODES: 27, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...