./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 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_fba560f0-fe5a-4153-8657-56843ee9bb84/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_fba560f0-fe5a-4153-8657-56843ee9bb84/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fba560f0-fe5a-4153-8657-56843ee9bb84/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fba560f0-fe5a-4153-8657-56843ee9bb84/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/cstrcmp.c -s /tmp/vcloud-vcloud-master/worker/run_dir_fba560f0-fe5a-4153-8657-56843ee9bb84/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fba560f0-fe5a-4153-8657-56843ee9bb84/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 256a9ac0f321f0d2863fb720d2ae6cb61570c373 ........................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 19:14:26,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 19:14:26,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 19:14:26,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 19:14:26,471 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 19:14:26,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 19:14:26,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 19:14:26,476 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 19:14:26,478 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 19:14:26,480 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 19:14:26,481 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 19:14:26,482 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 19:14:26,483 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 19:14:26,484 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 19:14:26,485 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 19:14:26,486 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 19:14:26,487 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 19:14:26,488 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 19:14:26,490 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 19:14:26,493 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 19:14:26,494 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 19:14:26,496 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 19:14:26,497 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 19:14:26,498 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 19:14:26,501 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 19:14:26,501 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 19:14:26,502 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 19:14:26,503 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 19:14:26,503 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 19:14:26,504 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 19:14:26,505 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 19:14:26,505 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 19:14:26,506 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 19:14:26,507 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 19:14:26,508 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 19:14:26,508 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 19:14:26,509 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 19:14:26,509 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 19:14:26,509 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 19:14:26,510 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 19:14:26,511 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 19:14:26,512 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fba560f0-fe5a-4153-8657-56843ee9bb84/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-12-09 19:14:26,533 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 19:14:26,534 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 19:14:26,534 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 19:14:26,535 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 19:14:26,535 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 19:14:26,535 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 19:14:26,535 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 19:14:26,535 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 19:14:26,535 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 19:14:26,536 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 19:14:26,536 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 19:14:26,536 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 19:14:26,536 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 19:14:26,536 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 19:14:26,536 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 19:14:26,537 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 19:14:26,537 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 19:14:26,538 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 19:14:26,538 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 19:14:26,538 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 19:14:26,538 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 19:14:26,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 19:14:26,538 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-12-09 19:14:26,539 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 19:14:26,539 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 19:14:26,539 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 19:14:26,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 19:14:26,539 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 19:14:26,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 19:14:26,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 19:14:26,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 19:14:26,540 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 19:14:26,540 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 19:14:26,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 19:14:26,541 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 19:14:26,541 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 19:14:26,541 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 19:14:26,541 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_fba560f0-fe5a-4153-8657-56843ee9bb84/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_fba560f0-fe5a-4153-8657-56843ee9bb84/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 256a9ac0f321f0d2863fb720d2ae6cb61570c373 [2020-12-09 19:14:26,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 19:14:26,732 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 19:14:26,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 19:14:26,735 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 19:14:26,736 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 19:14:26,737 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fba560f0-fe5a-4153-8657-56843ee9bb84/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/cstrcmp.c [2020-12-09 19:14:26,782 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fba560f0-fe5a-4153-8657-56843ee9bb84/bin/utaipan/data/4a5653d06/f7170584a26e4c3daa75d2f09c924f32/FLAG787c90096 [2020-12-09 19:14:27,135 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 19:14:27,135 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fba560f0-fe5a-4153-8657-56843ee9bb84/sv-benchmarks/c/termination-crafted-lit/cstrcmp.c [2020-12-09 19:14:27,141 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fba560f0-fe5a-4153-8657-56843ee9bb84/bin/utaipan/data/4a5653d06/f7170584a26e4c3daa75d2f09c924f32/FLAG787c90096 [2020-12-09 19:14:27,150 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fba560f0-fe5a-4153-8657-56843ee9bb84/bin/utaipan/data/4a5653d06/f7170584a26e4c3daa75d2f09c924f32 [2020-12-09 19:14:27,152 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 19:14:27,153 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 19:14:27,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 19:14:27,154 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 19:14:27,156 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 19:14:27,157 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:14:27" (1/1) ... [2020-12-09 19:14:27,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a0d504a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:14:27, skipping insertion in model container [2020-12-09 19:14:27,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:14:27" (1/1) ... [2020-12-09 19:14:27,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 19:14:27,173 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 19:14:27,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:14:27,297 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 19:14:27,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:14:27,319 INFO L208 MainTranslator]: Completed translation [2020-12-09 19:14:27,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:14:27 WrapperNode [2020-12-09 19:14:27,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 19:14:27,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 19:14:27,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 19:14:27,320 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 19:14:27,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:14:27" (1/1) ... [2020-12-09 19:14:27,335 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:14:27" (1/1) ... [2020-12-09 19:14:27,353 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 19:14:27,354 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 19:14:27,354 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 19:14:27,354 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 19:14:27,360 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:14:27" (1/1) ... [2020-12-09 19:14:27,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:14:27" (1/1) ... [2020-12-09 19:14:27,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:14:27" (1/1) ... [2020-12-09 19:14:27,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:14:27" (1/1) ... [2020-12-09 19:14:27,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:14:27" (1/1) ... [2020-12-09 19:14:27,369 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:14:27" (1/1) ... [2020-12-09 19:14:27,370 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:14:27" (1/1) ... [2020-12-09 19:14:27,372 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 19:14:27,372 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 19:14:27,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 19:14:27,373 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 19:14:27,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:14:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fba560f0-fe5a-4153-8657-56843ee9bb84/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 [2020-12-09 19:14:27,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 19:14:27,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-09 19:14:27,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 19:14:27,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 19:14:27,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 19:14:27,706 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 19:14:27,707 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2020-12-09 19:14:27,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:14:27 BoogieIcfgContainer [2020-12-09 19:14:27,709 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 19:14:27,711 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 19:14:27,711 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 19:14:27,714 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 19:14:27,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:14:27" (1/3) ... [2020-12-09 19:14:27,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@430887ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:14:27, skipping insertion in model container [2020-12-09 19:14:27,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:14:27" (2/3) ... [2020-12-09 19:14:27,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@430887ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:14:27, skipping insertion in model container [2020-12-09 19:14:27,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:14:27" (3/3) ... [2020-12-09 19:14:27,717 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrcmp.c [2020-12-09 19:14:27,731 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 19:14:27,733 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-12-09 19:14:27,741 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-12-09 19:14:27,761 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 19:14:27,761 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 19:14:27,761 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 19:14:27,762 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 19:14:27,762 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 19:14:27,762 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 19:14:27,762 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 19:14:27,762 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 19:14:27,773 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-12-09 19:14:27,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2020-12-09 19:14:27,777 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:14:27,777 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2020-12-09 19:14:27,778 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 19:14:27,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:14:27,782 INFO L82 PathProgramCache]: Analyzing trace with hash 3481, now seen corresponding path program 1 times [2020-12-09 19:14:27,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:14:27,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674660968] [2020-12-09 19:14:27,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:14:27,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:14:27,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:14:27,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674660968] [2020-12-09 19:14:27,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:14:27,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 19:14:27,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872622448] [2020-12-09 19:14:27,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 19:14:27,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:14:27,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 19:14:27,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 19:14:27,926 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 3 states. [2020-12-09 19:14:27,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:14:27,962 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-12-09 19:14:27,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 19:14:27,963 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2020-12-09 19:14:27,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:14:27,969 INFO L225 Difference]: With dead ends: 23 [2020-12-09 19:14:27,969 INFO L226 Difference]: Without dead ends: 13 [2020-12-09 19:14:27,971 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 [2020-12-09 19:14:27,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-09 19:14:27,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-12-09 19:14:27,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-09 19:14:27,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2020-12-09 19:14:27,994 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 2 [2020-12-09 19:14:27,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:14:27,995 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2020-12-09 19:14:27,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 19:14:27,995 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2020-12-09 19:14:27,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-09 19:14:27,995 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:14:27,995 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-09 19:14:27,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 19:14:27,996 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 19:14:27,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:14:27,996 INFO L82 PathProgramCache]: Analyzing trace with hash 107953, now seen corresponding path program 1 times [2020-12-09 19:14:27,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:14:27,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972176957] [2020-12-09 19:14:27,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:14:28,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:14:28,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:14:28,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972176957] [2020-12-09 19:14:28,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:14:28,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 19:14:28,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854301679] [2020-12-09 19:14:28,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 19:14:28,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:14:28,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 19:14:28,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 19:14:28,016 INFO L87 Difference]: Start difference. First operand 13 states and 12 transitions. Second operand 3 states. [2020-12-09 19:14:28,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:14:28,030 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2020-12-09 19:14:28,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 19:14:28,030 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-12-09 19:14:28,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:14:28,031 INFO L225 Difference]: With dead ends: 13 [2020-12-09 19:14:28,031 INFO L226 Difference]: Without dead ends: 11 [2020-12-09 19:14:28,031 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 [2020-12-09 19:14:28,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-12-09 19:14:28,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-12-09 19:14:28,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-12-09 19:14:28,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2020-12-09 19:14:28,033 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 3 [2020-12-09 19:14:28,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:14:28,034 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2020-12-09 19:14:28,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 19:14:28,034 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-12-09 19:14:28,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 19:14:28,034 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:14:28,034 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 19:14:28,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 19:14:28,034 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 19:14:28,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:14:28,035 INFO L82 PathProgramCache]: Analyzing trace with hash 103744243, now seen corresponding path program 1 times [2020-12-09 19:14:28,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:14:28,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751449113] [2020-12-09 19:14:28,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:14:28,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:14:28,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:14:28,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751449113] [2020-12-09 19:14:28,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:14:28,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 19:14:28,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523612081] [2020-12-09 19:14:28,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 19:14:28,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:14:28,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 19:14:28,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 19:14:28,056 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand 3 states. [2020-12-09 19:14:28,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:14:28,068 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-12-09 19:14:28,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 19:14:28,068 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-09 19:14:28,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:14:28,069 INFO L225 Difference]: With dead ends: 11 [2020-12-09 19:14:28,069 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 19:14:28,069 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 [2020-12-09 19:14:28,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 19:14:28,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 19:14:28,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 19:14:28,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 19:14:28,070 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2020-12-09 19:14:28,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:14:28,070 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 19:14:28,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 19:14:28,070 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 19:14:28,070 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 19:14:28,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 19:14:28,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 19:14:28,095 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2020-12-09 19:14:28,095 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2020-12-09 19:14:28,095 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2020-12-09 19:14:28,095 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 19:14:28,095 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2020-12-09 19:14:28,095 INFO L262 CegarLoopResult]: For program point L32-3(lines 32 35) no Hoare annotation was computed. [2020-12-09 19:14:28,095 INFO L258 CegarLoopResult]: At program point L32-5(lines 32 35) the Hoare annotation is: (<= ULTIMATE.start_build_nondet_String_~length~0 2147483647) [2020-12-09 19:14:28,096 INFO L258 CegarLoopResult]: At program point L32-6(lines 32 35) the Hoare annotation is: (<= ULTIMATE.start_build_nondet_String_~length~0 2147483647) [2020-12-09 19:14:28,096 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2020-12-09 19:14:28,096 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 19:14:28,096 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2020-12-09 19:14:28,096 INFO L262 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-12-09 19:14:28,096 INFO L262 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-12-09 19:14:28,096 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2020-12-09 19:14:28,096 INFO L262 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-12-09 19:14:28,096 INFO L258 CegarLoopResult]: 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)) [2020-12-09 19:14:28,096 INFO L262 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-12-09 19:14:28,096 INFO L258 CegarLoopResult]: 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)) [2020-12-09 19:14:28,097 INFO L262 CegarLoopResult]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2020-12-09 19:14:28,097 INFO L262 CegarLoopResult]: For program point L14-5(lines 14 16) no Hoare annotation was computed. [2020-12-09 19:14:28,097 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2020-12-09 19:14:28,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:14:28 BoogieIcfgContainer [2020-12-09 19:14:28,108 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 19:14:28,108 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 19:14:28,109 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 19:14:28,109 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 19:14:28,109 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:14:27" (3/4) ... [2020-12-09 19:14:28,111 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 19:14:28,118 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-12-09 19:14:28,119 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-12-09 19:14:28,119 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 19:14:28,159 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_fba560f0-fe5a-4153-8657-56843ee9bb84/bin/utaipan/witness.graphml [2020-12-09 19:14:28,159 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 19:14:28,161 INFO L168 Benchmark]: Toolchain (without parser) took 1007.06 ms. Allocated memory was 81.8 MB in the beginning and 127.9 MB in the end (delta: 46.1 MB). Free memory was 51.9 MB in the beginning and 104.7 MB in the end (delta: -52.8 MB). Peak memory consumption was 64.6 MB. Max. memory is 16.1 GB. [2020-12-09 19:14:28,161 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 81.8 MB. Free memory is still 41.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:14:28,161 INFO L168 Benchmark]: CACSL2BoogieTranslator took 165.49 ms. Allocated memory was 81.8 MB in the beginning and 127.9 MB in the end (delta: 46.1 MB). Free memory was 51.9 MB in the beginning and 105.2 MB in the end (delta: -53.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 19:14:28,162 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.26 ms. Allocated memory is still 127.9 MB. Free memory was 105.2 MB in the beginning and 103.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:14:28,162 INFO L168 Benchmark]: Boogie Preprocessor took 17.86 ms. Allocated memory is still 127.9 MB. Free memory was 103.9 MB in the beginning and 103.0 MB in the end (delta: 912.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:14:28,162 INFO L168 Benchmark]: RCFGBuilder took 336.77 ms. Allocated memory is still 127.9 MB. Free memory was 102.8 MB in the beginning and 76.8 MB in the end (delta: 26.0 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-12-09 19:14:28,163 INFO L168 Benchmark]: TraceAbstraction took 397.23 ms. Allocated memory is still 127.9 MB. Free memory was 76.8 MB in the beginning and 41.1 MB in the end (delta: 35.7 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. [2020-12-09 19:14:28,163 INFO L168 Benchmark]: Witness Printer took 51.11 ms. Allocated memory is still 127.9 MB. Free memory was 41.1 MB in the beginning and 104.7 MB in the end (delta: -63.6 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. [2020-12-09 19:14:28,165 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 81.8 MB. Free memory is still 41.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 165.49 ms. Allocated memory was 81.8 MB in the beginning and 127.9 MB in the end (delta: 46.1 MB). Free memory was 51.9 MB in the beginning and 105.2 MB in the end (delta: -53.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.26 ms. Allocated memory is still 127.9 MB. Free memory was 105.2 MB in the beginning and 103.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.86 ms. Allocated memory is still 127.9 MB. Free memory was 103.9 MB in the beginning and 103.0 MB in the end (delta: 912.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 336.77 ms. Allocated memory is still 127.9 MB. Free memory was 102.8 MB in the beginning and 76.8 MB in the end (delta: 26.0 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 397.23 ms. Allocated memory is still 127.9 MB. Free memory was 76.8 MB in the beginning and 41.1 MB in the end (delta: 35.7 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. * Witness Printer took 51.11 ms. Allocated memory is still 127.9 MB. Free memory was 41.1 MB in the beginning and 104.7 MB in the end (delta: -63.6 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 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: 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: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - 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: 32]: Loop Invariant Derived loop invariant: length <= 2147483647 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: length <= 2147483647 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 <= length && length <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 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, 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, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 71 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...