./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/cstrcmp.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094bf778-9ab2-4775-9fff-147981618684/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094bf778-9ab2-4775-9fff-147981618684/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094bf778-9ab2-4775-9fff-147981618684/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094bf778-9ab2-4775-9fff-147981618684/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/cstrcmp.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094bf778-9ab2-4775-9fff-147981618684/bin/utaipan-aC7eJsxGYH/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094bf778-9ab2-4775-9fff-147981618684/bin/utaipan-aC7eJsxGYH --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 f94b058015be4fc42a3d40d63b8ed2b8d3be3933ae3f7b0cb4e17bd99a68e898 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:00:21,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:00:21,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:00:21,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:00:21,134 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:00:21,135 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:00:21,138 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:00:21,141 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:00:21,144 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:00:21,145 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:00:21,147 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:00:21,149 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:00:21,150 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:00:21,152 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:00:21,154 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:00:21,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:00:21,157 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:00:21,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:00:21,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:00:21,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:00:21,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:00:21,174 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:00:21,176 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:00:21,177 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:00:21,187 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:00:21,190 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:00:21,191 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:00:21,192 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:00:21,194 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:00:21,196 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:00:21,197 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:00:21,198 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:00:21,201 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:00:21,203 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:00:21,205 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:00:21,205 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:00:21,207 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:00:21,207 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:00:21,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:00:21,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:00:21,210 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:00:21,211 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094bf778-9ab2-4775-9fff-147981618684/bin/utaipan-aC7eJsxGYH/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-11-03 05:00:21,265 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:00:21,265 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:00:21,267 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:00:21,268 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:00:21,268 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:00:21,268 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:00:21,269 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:00:21,269 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:00:21,269 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:00:21,269 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:00:21,271 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:00:21,271 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:00:21,271 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:00:21,272 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:00:21,272 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:00:21,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:00:21,273 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 05:00:21,274 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:00:21,274 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:00:21,274 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:00:21,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:00:21,275 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:00:21,275 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-03 05:00:21,275 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:00:21,275 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:00:21,276 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:00:21,276 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:00:21,276 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:00:21,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:00:21,279 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:00:21,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:00:21,279 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:00:21,280 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:00:21,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:00:21,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:00:21,281 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:00:21,281 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:00:21,281 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094bf778-9ab2-4775-9fff-147981618684/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094bf778-9ab2-4775-9fff-147981618684/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f94b058015be4fc42a3d40d63b8ed2b8d3be3933ae3f7b0cb4e17bd99a68e898 [2021-11-03 05:00:21,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:00:21,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:00:21,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:00:21,619 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:00:21,620 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:00:21,621 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094bf778-9ab2-4775-9fff-147981618684/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/termination-crafted-lit/cstrcmp.c [2021-11-03 05:00:21,760 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094bf778-9ab2-4775-9fff-147981618684/bin/utaipan-aC7eJsxGYH/data/13442c178/5f46980265b64a3780b0643545fce869/FLAG963ed3c8c [2021-11-03 05:00:22,270 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:00:22,271 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094bf778-9ab2-4775-9fff-147981618684/sv-benchmarks/c/termination-crafted-lit/cstrcmp.c [2021-11-03 05:00:22,279 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094bf778-9ab2-4775-9fff-147981618684/bin/utaipan-aC7eJsxGYH/data/13442c178/5f46980265b64a3780b0643545fce869/FLAG963ed3c8c [2021-11-03 05:00:22,648 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094bf778-9ab2-4775-9fff-147981618684/bin/utaipan-aC7eJsxGYH/data/13442c178/5f46980265b64a3780b0643545fce869 [2021-11-03 05:00:22,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:00:22,653 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:00:22,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:00:22,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:00:22,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:00:22,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:00:22" (1/1) ... [2021-11-03 05:00:22,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35481559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:00:22, skipping insertion in model container [2021-11-03 05:00:22,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:00:22" (1/1) ... [2021-11-03 05:00:22,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:00:22,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:00:22,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:00:22,946 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:00:22,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:00:23,010 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:00:23,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:00:23 WrapperNode [2021-11-03 05:00:23,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:00:23,013 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:00:23,013 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:00:23,013 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:00:23,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:00:23" (1/1) ... [2021-11-03 05:00:23,036 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:00:23" (1/1) ... [2021-11-03 05:00:23,074 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:00:23,076 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:00:23,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:00:23,076 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:00:23,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:00:23" (1/1) ... [2021-11-03 05:00:23,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:00:23" (1/1) ... [2021-11-03 05:00:23,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:00:23" (1/1) ... [2021-11-03 05:00:23,104 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:00:23" (1/1) ... [2021-11-03 05:00:23,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:00:23" (1/1) ... [2021-11-03 05:00:23,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:00:23" (1/1) ... [2021-11-03 05:00:23,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:00:23" (1/1) ... [2021-11-03 05:00:23,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:00:23,134 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:00:23,137 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:00:23,137 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:00:23,138 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:00:23" (1/1) ... [2021-11-03 05:00:23,147 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:00:23,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094bf778-9ab2-4775-9fff-147981618684/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:00:23,178 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094bf778-9ab2-4775-9fff-147981618684/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:00:23,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094bf778-9ab2-4775-9fff-147981618684/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:00:23,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 05:00:23,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 05:00:23,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:00:23,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:00:23,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 05:00:23,652 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:00:23,652 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-03 05:00:23,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:00:23 BoogieIcfgContainer [2021-11-03 05:00:23,655 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:00:23,657 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:00:23,657 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:00:23,661 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:00:23,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:00:22" (1/3) ... [2021-11-03 05:00:23,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44a8359b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:00:23, skipping insertion in model container [2021-11-03 05:00:23,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:00:23" (2/3) ... [2021-11-03 05:00:23,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44a8359b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:00:23, skipping insertion in model container [2021-11-03 05:00:23,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:00:23" (3/3) ... [2021-11-03 05:00:23,665 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrcmp.c [2021-11-03 05:00:23,671 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:00:23,672 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-03 05:00:23,728 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:00:23,744 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 05:00:23,744 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-03 05:00:23,785 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:00:23,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-11-03 05:00:23,790 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:00:23,790 INFO L513 BasicCegarLoop]: trace histogram [1, 1] [2021-11-03 05:00:23,791 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-03 05:00:23,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:00:23,797 INFO L85 PathProgramCache]: Analyzing trace with hash 3326, now seen corresponding path program 1 times [2021-11-03 05:00:23,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:00:23,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370834568] [2021-11-03 05:00:23,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:00:23,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:00:23,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:00:23,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:00:23,989 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:00:23,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370834568] [2021-11-03 05:00:23,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370834568] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:00:23,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:00:23,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-03 05:00:23,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693432266] [2021-11-03 05:00:23,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:00:23,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:00:24,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:00:24,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:00:24,017 INFO L87 Difference]: Start difference. First operand has 21 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:00:24,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:00:24,066 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2021-11-03 05:00:24,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:00:24,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-11-03 05:00:24,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:00:24,076 INFO L225 Difference]: With dead ends: 23 [2021-11-03 05:00:24,076 INFO L226 Difference]: Without dead ends: 13 [2021-11-03 05:00:24,079 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:00:24,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-03 05:00:24,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-03 05:00:24,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 12 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:00:24,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2021-11-03 05:00:24,113 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 2 [2021-11-03 05:00:24,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:00:24,113 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2021-11-03 05:00:24,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:00:24,114 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2021-11-03 05:00:24,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-03 05:00:24,114 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:00:24,114 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-03 05:00:24,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 05:00:24,115 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-03 05:00:24,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:00:24,116 INFO L85 PathProgramCache]: Analyzing trace with hash 103148, now seen corresponding path program 1 times [2021-11-03 05:00:24,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:00:24,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257647800] [2021-11-03 05:00:24,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:00:24,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:00:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:00:24,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:00:24,147 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:00:24,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257647800] [2021-11-03 05:00:24,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257647800] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:00:24,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:00:24,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-03 05:00:24,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785089332] [2021-11-03 05:00:24,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:00:24,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:00:24,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:00:24,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:00:24,152 INFO L87 Difference]: Start difference. First operand 13 states and 12 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:00:24,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:00:24,175 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2021-11-03 05:00:24,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:00:24,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-03 05:00:24,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:00:24,177 INFO L225 Difference]: With dead ends: 13 [2021-11-03 05:00:24,177 INFO L226 Difference]: Without dead ends: 11 [2021-11-03 05:00:24,178 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:00:24,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-11-03 05:00:24,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-11-03 05:00:24,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 10 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:00:24,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2021-11-03 05:00:24,181 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 3 [2021-11-03 05:00:24,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:00:24,182 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2021-11-03 05:00:24,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:00:24,182 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2021-11-03 05:00:24,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 05:00:24,183 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:00:24,194 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 05:00:24,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 05:00:24,195 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-03 05:00:24,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:00:24,196 INFO L85 PathProgramCache]: Analyzing trace with hash 99126638, now seen corresponding path program 1 times [2021-11-03 05:00:24,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:00:24,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762941535] [2021-11-03 05:00:24,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:00:24,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:00:24,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:00:24,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:00:24,260 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:00:24,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762941535] [2021-11-03 05:00:24,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762941535] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:00:24,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:00:24,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-03 05:00:24,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165331840] [2021-11-03 05:00:24,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:00:24,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:00:24,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:00:24,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:00:24,264 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:00:24,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:00:24,293 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2021-11-03 05:00:24,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:00:24,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-03 05:00:24,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:00:24,295 INFO L225 Difference]: With dead ends: 11 [2021-11-03 05:00:24,295 INFO L226 Difference]: Without dead ends: 0 [2021-11-03 05:00:24,296 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:00:24,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-03 05:00:24,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-03 05:00:24,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:00:24,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-03 05:00:24,297 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2021-11-03 05:00:24,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:00:24,298 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-03 05:00:24,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:00:24,298 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-03 05:00:24,298 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-03 05:00:24,301 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 05:00:24,302 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 05:00:24,302 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 05:00:24,303 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 05:00:24,303 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 05:00:24,304 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 05:00:24,306 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 05:00:24,306 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 05:00:24,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 05:00:24,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-03 05:00:24,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:00:24,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:00:24,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:00:24,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:00:24,366 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-11-03 05:00:24,366 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-11-03 05:00:24,366 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-11-03 05:00:24,367 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-03 05:00:24,367 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-11-03 05:00:24,367 INFO L857 garLoopResultBuilder]: For program point L32-3(lines 32 35) no Hoare annotation was computed. [2021-11-03 05:00:24,367 INFO L853 garLoopResultBuilder]: At program point L32-5(lines 32 35) the Hoare annotation is: (<= ULTIMATE.start_build_nondet_String_~length~0 2147483647) [2021-11-03 05:00:24,368 INFO L853 garLoopResultBuilder]: At program point L32-6(lines 32 35) the Hoare annotation is: (<= ULTIMATE.start_build_nondet_String_~length~0 2147483647) [2021-11-03 05:00:24,368 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-11-03 05:00:24,368 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-03 05:00:24,368 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-11-03 05:00:24,369 INFO L857 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-11-03 05:00:24,369 INFO L857 garLoopResultBuilder]: For program point L17-1(line 17) no Hoare annotation was computed. [2021-11-03 05:00:24,369 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-11-03 05:00:24,369 INFO L857 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-11-03 05:00:24,370 INFO L853 garLoopResultBuilder]: At program point L18-1(line 18) the Hoare annotation is: (and (<= 1 ULTIMATE.start_build_nondet_String_~length~0) (<= ULTIMATE.start_build_nondet_String_~length~0 2147483647)) [2021-11-03 05:00:24,370 INFO L857 garLoopResultBuilder]: For program point L18-2(line 18) no Hoare annotation was computed. [2021-11-03 05:00:24,370 INFO L853 garLoopResultBuilder]: At program point L18-3(line 18) the Hoare annotation is: (and (<= 1 ULTIMATE.start_build_nondet_String_~length~0) (<= ULTIMATE.start_build_nondet_String_~length~0 2147483647)) [2021-11-03 05:00:24,370 INFO L857 garLoopResultBuilder]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2021-11-03 05:00:24,370 INFO L857 garLoopResultBuilder]: For program point L14-5(lines 14 16) no Hoare annotation was computed. [2021-11-03 05:00:24,371 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-11-03 05:00:24,374 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-03 05:00:24,376 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 05:00:24,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 05:00:24 BoogieIcfgContainer [2021-11-03 05:00:24,393 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 05:00:24,393 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 05:00:24,393 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 05:00:24,396 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 05:00:24,396 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:00:23" (3/4) ... [2021-11-03 05:00:24,406 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-03 05:00:24,421 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-11-03 05:00:24,422 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-03 05:00:24,422 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-03 05:00:24,489 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094bf778-9ab2-4775-9fff-147981618684/bin/utaipan-aC7eJsxGYH/witness.graphml [2021-11-03 05:00:24,490 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 05:00:24,492 INFO L168 Benchmark]: Toolchain (without parser) took 1837.78 ms. Allocated memory was 96.5 MB in the beginning and 125.8 MB in the end (delta: 29.4 MB). Free memory was 64.1 MB in the beginning and 49.5 MB in the end (delta: 14.6 MB). Peak memory consumption was 41.2 MB. Max. memory is 16.1 GB. [2021-11-03 05:00:24,492 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 96.5 MB. Free memory is still 50.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:00:24,493 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.39 ms. Allocated memory was 96.5 MB in the beginning and 125.8 MB in the end (delta: 29.4 MB). Free memory was 63.8 MB in the beginning and 101.1 MB in the end (delta: -37.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 05:00:24,494 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.70 ms. Allocated memory is still 125.8 MB. Free memory was 101.1 MB in the beginning and 99.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 05:00:24,494 INFO L168 Benchmark]: Boogie Preprocessor took 58.04 ms. Allocated memory is still 125.8 MB. Free memory was 99.8 MB in the beginning and 98.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:00:24,495 INFO L168 Benchmark]: RCFGBuilder took 520.94 ms. Allocated memory is still 125.8 MB. Free memory was 98.5 MB in the beginning and 82.9 MB in the end (delta: 15.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-11-03 05:00:24,495 INFO L168 Benchmark]: TraceAbstraction took 735.57 ms. Allocated memory is still 125.8 MB. Free memory was 82.2 MB in the beginning and 52.3 MB in the end (delta: 29.8 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2021-11-03 05:00:24,496 INFO L168 Benchmark]: Witness Printer took 96.39 ms. Allocated memory is still 125.8 MB. Free memory was 52.3 MB in the beginning and 49.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-03 05:00:24,498 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 96.5 MB. Free memory is still 50.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 357.39 ms. Allocated memory was 96.5 MB in the beginning and 125.8 MB in the end (delta: 29.4 MB). Free memory was 63.8 MB in the beginning and 101.1 MB in the end (delta: -37.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 61.70 ms. Allocated memory is still 125.8 MB. Free memory was 101.1 MB in the beginning and 99.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.04 ms. Allocated memory is still 125.8 MB. Free memory was 99.8 MB in the beginning and 98.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 520.94 ms. Allocated memory is still 125.8 MB. Free memory was 98.5 MB in the beginning and 82.9 MB in the end (delta: 15.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 735.57 ms. Allocated memory is still 125.8 MB. Free memory was 82.2 MB in the beginning and 52.3 MB in the end (delta: 29.8 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * Witness Printer took 96.39 ms. Allocated memory is still 125.8 MB. Free memory was 52.3 MB in the beginning and 49.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 7 SDtfs, 25 SDslu, 0 SDs, 0 SdLazy, 28 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 5 NumberOfFragments, 20 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 10 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 <= length && length <= 2147483647 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 <= length && length <= 2147483647 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: length <= 2147483647 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: length <= 2147483647 RESULT: Ultimate proved your program to be correct! [2021-11-03 05:00:24,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094bf778-9ab2-4775-9fff-147981618684/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE