./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-while2.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_ac382a12-2932-49f2-902d-c7acfc73be9d/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ac382a12-2932-49f2-902d-c7acfc73be9d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ac382a12-2932-49f2-902d-c7acfc73be9d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ac382a12-2932-49f2-902d-c7acfc73be9d/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-while2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ac382a12-2932-49f2-902d-c7acfc73be9d/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ac382a12-2932-49f2-902d-c7acfc73be9d/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 775ea6e0a1296fd7b29dfc5da5a4c77d3361f4a8 ........................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 03:22:59,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 03:22:59,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 03:22:59,194 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 03:22:59,195 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 03:22:59,196 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 03:22:59,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 03:22:59,201 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 03:22:59,203 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 03:22:59,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 03:22:59,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 03:22:59,207 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 03:22:59,207 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 03:22:59,209 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 03:22:59,210 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 03:22:59,212 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 03:22:59,213 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 03:22:59,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 03:22:59,216 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 03:22:59,218 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 03:22:59,220 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 03:22:59,224 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 03:22:59,226 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 03:22:59,227 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 03:22:59,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 03:22:59,231 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 03:22:59,231 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 03:22:59,232 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 03:22:59,233 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 03:22:59,234 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 03:22:59,235 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 03:22:59,236 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 03:22:59,236 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 03:22:59,237 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 03:22:59,239 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 03:22:59,239 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 03:22:59,240 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 03:22:59,241 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 03:22:59,241 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 03:22:59,242 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 03:22:59,243 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 03:22:59,244 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ac382a12-2932-49f2-902d-c7acfc73be9d/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-11-30 03:22:59,267 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 03:22:59,267 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 03:22:59,268 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 03:22:59,268 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 03:22:59,269 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 03:22:59,269 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 03:22:59,269 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 03:22:59,269 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 03:22:59,270 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 03:22:59,270 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 03:22:59,270 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 03:22:59,271 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 03:22:59,271 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 03:22:59,271 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 03:22:59,271 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 03:22:59,272 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 03:22:59,273 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 03:22:59,273 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 03:22:59,273 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 03:22:59,273 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 03:22:59,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 03:22:59,274 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 03:22:59,274 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-30 03:22:59,274 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 03:22:59,275 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 03:22:59,275 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 03:22:59,275 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 03:22:59,275 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 03:22:59,276 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 03:22:59,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 03:22:59,276 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 03:22:59,277 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 03:22:59,277 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 03:22:59,277 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 03:22:59,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 03:22:59,277 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 03:22:59,278 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 03:22:59,278 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 03:22:59,278 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_ac382a12-2932-49f2-902d-c7acfc73be9d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ac382a12-2932-49f2-902d-c7acfc73be9d/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 775ea6e0a1296fd7b29dfc5da5a4c77d3361f4a8 [2020-11-30 03:22:59,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 03:22:59,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 03:22:59,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 03:22:59,618 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 03:22:59,621 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 03:22:59,622 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ac382a12-2932-49f2-902d-c7acfc73be9d/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-while2.c [2020-11-30 03:22:59,714 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ac382a12-2932-49f2-902d-c7acfc73be9d/bin/utaipan/data/5af6c1ea3/26054719022c4f46bf7b54c41f963366/FLAGf3966c315 [2020-11-30 03:23:00,327 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 03:23:00,329 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ac382a12-2932-49f2-902d-c7acfc73be9d/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-while2.c [2020-11-30 03:23:00,343 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ac382a12-2932-49f2-902d-c7acfc73be9d/bin/utaipan/data/5af6c1ea3/26054719022c4f46bf7b54c41f963366/FLAGf3966c315 [2020-11-30 03:23:00,670 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ac382a12-2932-49f2-902d-c7acfc73be9d/bin/utaipan/data/5af6c1ea3/26054719022c4f46bf7b54c41f963366 [2020-11-30 03:23:00,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 03:23:00,679 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 03:23:00,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 03:23:00,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 03:23:00,687 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 03:23:00,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 03:23:00" (1/1) ... [2020-11-30 03:23:00,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ee4d26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:23:00, skipping insertion in model container [2020-11-30 03:23:00,692 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 03:23:00" (1/1) ... [2020-11-30 03:23:00,702 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 03:23:00,723 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 03:23:00,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 03:23:00,930 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 03:23:00,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 03:23:01,000 INFO L208 MainTranslator]: Completed translation [2020-11-30 03:23:01,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:23:01 WrapperNode [2020-11-30 03:23:01,001 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 03:23:01,002 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 03:23:01,003 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 03:23:01,003 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 03:23:01,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:23:01" (1/1) ... [2020-11-30 03:23:01,018 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:23:01" (1/1) ... [2020-11-30 03:23:01,037 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 03:23:01,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 03:23:01,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 03:23:01,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 03:23:01,048 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:23:01" (1/1) ... [2020-11-30 03:23:01,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:23:01" (1/1) ... [2020-11-30 03:23:01,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:23:01" (1/1) ... [2020-11-30 03:23:01,049 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:23:01" (1/1) ... [2020-11-30 03:23:01,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:23:01" (1/1) ... [2020-11-30 03:23:01,056 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:23:01" (1/1) ... [2020-11-30 03:23:01,057 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:23:01" (1/1) ... [2020-11-30 03:23:01,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 03:23:01,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 03:23:01,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 03:23:01,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 03:23:01,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:23:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ac382a12-2932-49f2-902d-c7acfc73be9d/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 [2020-11-30 03:23:01,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 03:23:01,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 03:23:01,486 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 03:23:01,486 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-30 03:23:01,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:23:01 BoogieIcfgContainer [2020-11-30 03:23:01,489 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 03:23:01,491 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 03:23:01,491 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 03:23:01,496 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 03:23:01,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 03:23:00" (1/3) ... [2020-11-30 03:23:01,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6780b795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 03:23:01, skipping insertion in model container [2020-11-30 03:23:01,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:23:01" (2/3) ... [2020-11-30 03:23:01,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6780b795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 03:23:01, skipping insertion in model container [2020-11-30 03:23:01,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:23:01" (3/3) ... [2020-11-30 03:23:01,500 INFO L111 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-while2.c [2020-11-30 03:23:01,513 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 03:23:01,518 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-30 03:23:01,531 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-30 03:23:01,568 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 03:23:01,569 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 03:23:01,569 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 03:23:01,569 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 03:23:01,569 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 03:23:01,570 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 03:23:01,570 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 03:23:01,570 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 03:23:01,587 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-11-30 03:23:01,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-30 03:23:01,596 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:23:01,597 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-30 03:23:01,597 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 03:23:01,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:23:01,606 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2020-11-30 03:23:01,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:23:01,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146487180] [2020-11-30 03:23:01,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:23:01,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:23:01,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:23:01,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146487180] [2020-11-30 03:23:01,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:23:01,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 03:23:01,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076623323] [2020-11-30 03:23:01,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 03:23:01,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:23:01,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 03:23:01,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 03:23:01,882 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 4 states. [2020-11-30 03:23:02,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:23:02,001 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2020-11-30 03:23:02,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 03:23:02,004 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-11-30 03:23:02,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:23:02,017 INFO L225 Difference]: With dead ends: 14 [2020-11-30 03:23:02,018 INFO L226 Difference]: Without dead ends: 11 [2020-11-30 03:23:02,022 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 [2020-11-30 03:23:02,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-30 03:23:02,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2020-11-30 03:23:02,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-30 03:23:02,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2020-11-30 03:23:02,070 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 4 [2020-11-30 03:23:02,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:23:02,070 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2020-11-30 03:23:02,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 03:23:02,071 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-11-30 03:23:02,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-30 03:23:02,071 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:23:02,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-30 03:23:02,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 03:23:02,073 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 03:23:02,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:23:02,074 INFO L82 PathProgramCache]: Analyzing trace with hash 964251, now seen corresponding path program 1 times [2020-11-30 03:23:02,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:23:02,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997603820] [2020-11-30 03:23:02,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:23:02,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:23:02,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:23:02,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997603820] [2020-11-30 03:23:02,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:23:02,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-30 03:23:02,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783117061] [2020-11-30 03:23:02,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 03:23:02,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:23:02,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 03:23:02,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:23:02,123 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 3 states. [2020-11-30 03:23:02,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:23:02,155 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2020-11-30 03:23:02,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 03:23:02,157 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-30 03:23:02,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:23:02,158 INFO L225 Difference]: With dead ends: 10 [2020-11-30 03:23:02,158 INFO L226 Difference]: Without dead ends: 9 [2020-11-30 03:23:02,160 INFO L677 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 [2020-11-30 03:23:02,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-11-30 03:23:02,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-11-30 03:23:02,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-30 03:23:02,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2020-11-30 03:23:02,166 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 4 [2020-11-30 03:23:02,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:23:02,168 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2020-11-30 03:23:02,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 03:23:02,169 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2020-11-30 03:23:02,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 03:23:02,169 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:23:02,170 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 03:23:02,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 03:23:02,170 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 03:23:02,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:23:02,171 INFO L82 PathProgramCache]: Analyzing trace with hash 29869514, now seen corresponding path program 1 times [2020-11-30 03:23:02,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:23:02,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923671569] [2020-11-30 03:23:02,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:23:02,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:23:02,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:23:02,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923671569] [2020-11-30 03:23:02,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:23:02,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 03:23:02,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108966086] [2020-11-30 03:23:02,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 03:23:02,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:23:02,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 03:23:02,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:23:02,204 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 3 states. [2020-11-30 03:23:02,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:23:02,234 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2020-11-30 03:23:02,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 03:23:02,235 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-30 03:23:02,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:23:02,236 INFO L225 Difference]: With dead ends: 9 [2020-11-30 03:23:02,236 INFO L226 Difference]: Without dead ends: 8 [2020-11-30 03:23:02,236 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 [2020-11-30 03:23:02,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-11-30 03:23:02,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-11-30 03:23:02,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-30 03:23:02,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2020-11-30 03:23:02,240 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2020-11-30 03:23:02,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:23:02,240 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2020-11-30 03:23:02,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 03:23:02,240 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2020-11-30 03:23:02,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 03:23:02,241 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:23:02,241 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 03:23:02,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 03:23:02,242 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 03:23:02,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:23:02,242 INFO L82 PathProgramCache]: Analyzing trace with hash 29891841, now seen corresponding path program 1 times [2020-11-30 03:23:02,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:23:02,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717599721] [2020-11-30 03:23:02,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:23:02,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:23:02,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:23:02,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717599721] [2020-11-30 03:23:02,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:23:02,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 03:23:02,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317188990] [2020-11-30 03:23:02,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 03:23:02,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:23:02,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 03:23:02,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:23:02,269 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand 3 states. [2020-11-30 03:23:02,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:23:02,282 INFO L93 Difference]: Finished difference Result 8 states and 9 transitions. [2020-11-30 03:23:02,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 03:23:02,283 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-30 03:23:02,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:23:02,283 INFO L225 Difference]: With dead ends: 8 [2020-11-30 03:23:02,283 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 03:23:02,284 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 [2020-11-30 03:23:02,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 03:23:02,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 03:23:02,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 03:23:02,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 03:23:02,285 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2020-11-30 03:23:02,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:23:02,285 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 03:23:02,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 03:23:02,285 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 03:23:02,286 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 03:23:02,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 03:23:02,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 03:23:02,352 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-11-30 03:23:02,352 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 03:23:02,352 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-11-30 03:23:02,353 INFO L270 CegarLoopResult]: At program point L19-2(lines 19 21) the Hoare annotation is: (and (<= ULTIMATE.start_main_~i~0 2147483647) (<= ULTIMATE.start_main_~N~0 2147483647) (<= 1 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 2147483647)) [2020-11-30 03:23:02,353 INFO L274 CegarLoopResult]: For program point L19-3(lines 19 21) no Hoare annotation was computed. [2020-11-30 03:23:02,353 INFO L270 CegarLoopResult]: At program point L17-2(lines 17 23) the Hoare annotation is: (and (<= ULTIMATE.start_main_~i~0 2147483647) (<= ULTIMATE.start_main_~N~0 2147483647)) [2020-11-30 03:23:02,363 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-11-30 03:23:02,364 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-11-30 03:23:02,364 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 03:23:02,364 INFO L274 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-11-30 03:23:02,364 INFO L274 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-11-30 03:23:02,364 INFO L274 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-11-30 03:23:02,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 03:23:02 BoogieIcfgContainer [2020-11-30 03:23:02,383 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 03:23:02,384 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 03:23:02,384 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 03:23:02,384 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 03:23:02,385 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:23:01" (3/4) ... [2020-11-30 03:23:02,389 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 03:23:02,400 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-30 03:23:02,401 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 03:23:02,401 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 03:23:02,446 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ac382a12-2932-49f2-902d-c7acfc73be9d/bin/utaipan/witness.graphml [2020-11-30 03:23:02,447 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 03:23:02,449 INFO L168 Benchmark]: Toolchain (without parser) took 1769.06 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 71.7 MB in the beginning and 105.1 MB in the end (delta: -33.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 03:23:02,450 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 107.0 MB. Free memory was 77.2 MB in the beginning and 77.1 MB in the end (delta: 31.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 03:23:02,451 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.54 ms. Allocated memory is still 107.0 MB. Free memory was 71.6 MB in the beginning and 83.8 MB in the end (delta: -12.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 03:23:02,451 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.82 ms. Allocated memory is still 107.0 MB. Free memory was 83.8 MB in the beginning and 82.9 MB in the end (delta: 935.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 03:23:02,452 INFO L168 Benchmark]: Boogie Preprocessor took 21.18 ms. Allocated memory is still 107.0 MB. Free memory was 82.9 MB in the beginning and 82.0 MB in the end (delta: 931.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 03:23:02,453 INFO L168 Benchmark]: RCFGBuilder took 429.56 ms. Allocated memory is still 107.0 MB. Free memory was 81.7 MB in the beginning and 71.4 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 03:23:02,454 INFO L168 Benchmark]: TraceAbstraction took 892.03 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 70.8 MB in the beginning and 107.2 MB in the end (delta: -36.4 MB). Peak memory consumption was 35.9 MB. Max. memory is 16.1 GB. [2020-11-30 03:23:02,454 INFO L168 Benchmark]: Witness Printer took 63.04 ms. Allocated memory is still 130.0 MB. Free memory was 107.2 MB in the beginning and 105.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 03:23:02,458 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 107.0 MB. Free memory was 77.2 MB in the beginning and 77.1 MB in the end (delta: 31.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 319.54 ms. Allocated memory is still 107.0 MB. Free memory was 71.6 MB in the beginning and 83.8 MB in the end (delta: -12.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.82 ms. Allocated memory is still 107.0 MB. Free memory was 83.8 MB in the beginning and 82.9 MB in the end (delta: 935.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.18 ms. Allocated memory is still 107.0 MB. Free memory was 82.9 MB in the beginning and 82.0 MB in the end (delta: 931.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 429.56 ms. Allocated memory is still 107.0 MB. Free memory was 81.7 MB in the beginning and 71.4 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 892.03 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 70.8 MB in the beginning and 107.2 MB in the end (delta: -36.4 MB). Peak memory consumption was 35.9 MB. Max. memory is 16.1 GB. * Witness Printer took 63.04 ms. Allocated memory is still 130.0 MB. Free memory was 107.2 MB in the beginning and 105.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: 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: 17]: Loop Invariant Derived loop invariant: i <= 2147483647 && N <= 2147483647 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: ((i <= 2147483647 && N <= 2147483647) && 1 <= i) && j <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 26 SDtfs, 27 SDslu, 4 SDs, 0 SdLazy, 22 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 2 NumberOfFragments, 20 HoareAnnotationTreeSize, 2 FomulaSimplifications, 8 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 126 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...