./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/cstrlen.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_a4833cff-b042-4428-b724-5aeec59c84d3/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a4833cff-b042-4428-b724-5aeec59c84d3/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a4833cff-b042-4428-b724-5aeec59c84d3/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a4833cff-b042-4428-b724-5aeec59c84d3/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/cstrlen.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a4833cff-b042-4428-b724-5aeec59c84d3/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a4833cff-b042-4428-b724-5aeec59c84d3/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 1e3ef20869762bcfb9d8151d96b8065864cd760e ........................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:01:39,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:01:39,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:01:39,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:01:39,758 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:01:39,760 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:01:39,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:01:39,765 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:01:39,767 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:01:39,769 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:01:39,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:01:39,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:01:39,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:01:39,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:01:39,780 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:01:39,781 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:01:39,783 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:01:39,784 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:01:39,786 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:01:39,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:01:39,791 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:01:39,792 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:01:39,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:01:39,795 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:01:39,798 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:01:39,799 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:01:39,799 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:01:39,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:01:39,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:01:39,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:01:39,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:01:39,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:01:39,805 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:01:39,806 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:01:39,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:01:39,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:01:39,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:01:39,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:01:39,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:01:39,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:01:39,812 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:01:39,813 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a4833cff-b042-4428-b724-5aeec59c84d3/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-11-22 13:01:39,842 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:01:39,845 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:01:39,846 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:01:39,847 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:01:39,847 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:01:39,847 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:01:39,847 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:01:39,848 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:01:39,848 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:01:39,848 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:01:39,849 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:01:39,849 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:01:39,850 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:01:39,850 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:01:39,850 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:01:39,851 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:01:39,851 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 13:01:39,851 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:01:39,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:01:39,852 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:01:39,852 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:01:39,852 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:01:39,852 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-22 13:01:39,853 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:01:39,853 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:01:39,853 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:01:39,853 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:01:39,854 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:01:39,854 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:01:39,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:01:39,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:01:39,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:01:39,857 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:01:39,857 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:01:39,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:01:39,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:01:39,857 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:01:39,858 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:01:39,858 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_a4833cff-b042-4428-b724-5aeec59c84d3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a4833cff-b042-4428-b724-5aeec59c84d3/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e3ef20869762bcfb9d8151d96b8065864cd760e [2020-11-22 13:01:40,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:01:40,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:01:40,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:01:40,202 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:01:40,203 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:01:40,204 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a4833cff-b042-4428-b724-5aeec59c84d3/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/cstrlen.c [2020-11-22 13:01:40,289 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a4833cff-b042-4428-b724-5aeec59c84d3/bin/utaipan/data/fe804fcdd/1c8abd2cdfe04902a43e93f65f699296/FLAG7fff0beac [2020-11-22 13:01:40,798 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:01:40,799 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a4833cff-b042-4428-b724-5aeec59c84d3/sv-benchmarks/c/termination-crafted-lit/cstrlen.c [2020-11-22 13:01:40,814 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a4833cff-b042-4428-b724-5aeec59c84d3/bin/utaipan/data/fe804fcdd/1c8abd2cdfe04902a43e93f65f699296/FLAG7fff0beac [2020-11-22 13:01:41,190 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a4833cff-b042-4428-b724-5aeec59c84d3/bin/utaipan/data/fe804fcdd/1c8abd2cdfe04902a43e93f65f699296 [2020-11-22 13:01:41,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:01:41,197 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:01:41,202 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:01:41,202 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:01:41,207 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:01:41,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:01:41" (1/1) ... [2020-11-22 13:01:41,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14066370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:41, skipping insertion in model container [2020-11-22 13:01:41,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:01:41" (1/1) ... [2020-11-22 13:01:41,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:01:41,241 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:01:41,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:01:41,434 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:01:41,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:01:41,462 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:01:41,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:41 WrapperNode [2020-11-22 13:01:41,463 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:01:41,464 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:01:41,464 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:01:41,464 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:01:41,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:41" (1/1) ... [2020-11-22 13:01:41,478 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:41" (1/1) ... [2020-11-22 13:01:41,497 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:01:41,498 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:01:41,498 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:01:41,498 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:01:41,506 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:41" (1/1) ... [2020-11-22 13:01:41,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:41" (1/1) ... [2020-11-22 13:01:41,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:41" (1/1) ... [2020-11-22 13:01:41,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:41" (1/1) ... [2020-11-22 13:01:41,514 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:41" (1/1) ... [2020-11-22 13:01:41,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:41" (1/1) ... [2020-11-22 13:01:41,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:41" (1/1) ... [2020-11-22 13:01:41,521 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:01:41,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:01:41,522 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:01:41,522 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:01:41,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4833cff-b042-4428-b724-5aeec59c84d3/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:01:41,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-22 13:01:41,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-22 13:01:41,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:01:41,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:01:41,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-22 13:01:42,132 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:01:42,133 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-22 13:01:42,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:01:42 BoogieIcfgContainer [2020-11-22 13:01:42,135 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:01:42,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:01:42,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:01:42,140 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:01:42,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:01:41" (1/3) ... [2020-11-22 13:01:42,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@281898a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:01:42, skipping insertion in model container [2020-11-22 13:01:42,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:41" (2/3) ... [2020-11-22 13:01:42,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@281898a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:01:42, skipping insertion in model container [2020-11-22 13:01:42,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:01:42" (3/3) ... [2020-11-22 13:01:42,143 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrlen.c [2020-11-22 13:01:42,155 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:01:42,160 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-22 13:01:42,174 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-22 13:01:42,202 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:01:42,202 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:01:42,202 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:01:42,202 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:01:42,202 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:01:42,203 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:01:42,203 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:01:42,203 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:01:42,214 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-11-22 13:01:42,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2020-11-22 13:01:42,217 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:01:42,218 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2020-11-22 13:01:42,218 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 13:01:42,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:01:42,225 INFO L82 PathProgramCache]: Analyzing trace with hash 2334, now seen corresponding path program 1 times [2020-11-22 13:01:42,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:01:42,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689237128] [2020-11-22 13:01:42,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:01:42,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:01:42,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:42,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689237128] [2020-11-22 13:01:42,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:01:42,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-22 13:01:42,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911837604] [2020-11-22 13:01:42,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:01:42,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:01:42,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:01:42,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:01:42,470 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 3 states. [2020-11-22 13:01:42,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:01:42,512 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2020-11-22 13:01:42,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:01:42,514 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2020-11-22 13:01:42,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:01:42,522 INFO L225 Difference]: With dead ends: 15 [2020-11-22 13:01:42,522 INFO L226 Difference]: Without dead ends: 7 [2020-11-22 13:01:42,525 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 [2020-11-22 13:01:42,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-11-22 13:01:42,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-11-22 13:01:42,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-22 13:01:42,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2020-11-22 13:01:42,556 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 2 [2020-11-22 13:01:42,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:01:42,557 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2020-11-22 13:01:42,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:01:42,557 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-11-22 13:01:42,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-22 13:01:42,558 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:01:42,558 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-22 13:01:42,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:01:42,559 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 13:01:42,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:01:42,560 INFO L82 PathProgramCache]: Analyzing trace with hash 72396, now seen corresponding path program 1 times [2020-11-22 13:01:42,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:01:42,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737599146] [2020-11-22 13:01:42,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:01:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:01:42,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:42,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737599146] [2020-11-22 13:01:42,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:01:42,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-22 13:01:42,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455542137] [2020-11-22 13:01:42,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:01:42,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:01:42,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:01:42,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:01:42,605 INFO L87 Difference]: Start difference. First operand 7 states and 6 transitions. Second operand 3 states. [2020-11-22 13:01:42,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:01:42,619 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2020-11-22 13:01:42,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:01:42,620 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-11-22 13:01:42,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:01:42,620 INFO L225 Difference]: With dead ends: 7 [2020-11-22 13:01:42,621 INFO L226 Difference]: Without dead ends: 6 [2020-11-22 13:01:42,621 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 [2020-11-22 13:01:42,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2020-11-22 13:01:42,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2020-11-22 13:01:42,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-22 13:01:42,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5 transitions. [2020-11-22 13:01:42,624 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 5 transitions. Word has length 3 [2020-11-22 13:01:42,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:01:42,624 INFO L481 AbstractCegarLoop]: Abstraction has 6 states and 5 transitions. [2020-11-22 13:01:42,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:01:42,624 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 5 transitions. [2020-11-22 13:01:42,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 13:01:42,625 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:01:42,625 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-22 13:01:42,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:01:42,625 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 13:01:42,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:01:42,626 INFO L82 PathProgramCache]: Analyzing trace with hash 69573966, now seen corresponding path program 1 times [2020-11-22 13:01:42,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:01:42,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043307255] [2020-11-22 13:01:42,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:01:42,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:01:42,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:42,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043307255] [2020-11-22 13:01:42,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:01:42,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-22 13:01:42,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411846087] [2020-11-22 13:01:42,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:01:42,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:01:42,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:01:42,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:01:42,688 INFO L87 Difference]: Start difference. First operand 6 states and 5 transitions. Second operand 3 states. [2020-11-22 13:01:42,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:01:42,699 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2020-11-22 13:01:42,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:01:42,701 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-22 13:01:42,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:01:42,701 INFO L225 Difference]: With dead ends: 6 [2020-11-22 13:01:42,701 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 13:01:42,702 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 [2020-11-22 13:01:42,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 13:01:42,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 13:01:42,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 13:01:42,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 13:01:42,703 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2020-11-22 13:01:42,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:01:42,703 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 13:01:42,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:01:42,703 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 13:01:42,704 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 13:01:42,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 13:01:42,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 13:01:42,746 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2020-11-22 13:01:42,746 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 13:01:42,747 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2020-11-22 13:01:42,747 INFO L274 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-11-22 13:01:42,747 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2020-11-22 13:01:42,747 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2020-11-22 13:01:42,747 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 13:01:42,747 INFO L274 CegarLoopResult]: For program point L30-1(lines 30 31) no Hoare annotation was computed. [2020-11-22 13:01:42,748 INFO L270 CegarLoopResult]: At program point L30-3(lines 30 31) the Hoare annotation is: (<= ULTIMATE.start_build_nondet_String_~length~0 2147483647) [2020-11-22 13:01:42,748 INFO L270 CegarLoopResult]: At program point L30-4(lines 30 31) the Hoare annotation is: (<= ULTIMATE.start_build_nondet_String_~length~0 2147483647) [2020-11-22 13:01:42,748 INFO L274 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-11-22 13:01:42,748 INFO L270 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)) [2020-11-22 13:01:42,748 INFO L274 CegarLoopResult]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2020-11-22 13:01:42,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:01:42 BoogieIcfgContainer [2020-11-22 13:01:42,767 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:01:42,768 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:01:42,768 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:01:42,768 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:01:42,768 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:01:42" (3/4) ... [2020-11-22 13:01:42,772 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 13:01:42,782 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-22 13:01:42,783 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-22 13:01:42,783 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-22 13:01:42,847 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a4833cff-b042-4428-b724-5aeec59c84d3/bin/utaipan/witness.graphml [2020-11-22 13:01:42,847 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:01:42,849 INFO L168 Benchmark]: Toolchain (without parser) took 1650.86 ms. Allocated memory is still 96.5 MB. Free memory was 67.5 MB in the beginning and 41.8 MB in the end (delta: 25.7 MB). Peak memory consumption was 27.9 MB. Max. memory is 16.1 GB. [2020-11-22 13:01:42,850 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 77.6 MB. Free memory is still 44.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:01:42,851 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.31 ms. Allocated memory is still 96.5 MB. Free memory was 67.3 MB in the beginning and 58.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:01:42,851 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.24 ms. Allocated memory is still 96.5 MB. Free memory was 58.3 MB in the beginning and 56.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:01:42,857 INFO L168 Benchmark]: Boogie Preprocessor took 22.99 ms. Allocated memory is still 96.5 MB. Free memory was 56.8 MB in the beginning and 55.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:01:42,858 INFO L168 Benchmark]: RCFGBuilder took 613.52 ms. Allocated memory is still 96.5 MB. Free memory was 55.6 MB in the beginning and 74.3 MB in the end (delta: -18.7 MB). Peak memory consumption was 21.6 MB. Max. memory is 16.1 GB. [2020-11-22 13:01:42,859 INFO L168 Benchmark]: TraceAbstraction took 630.70 ms. Allocated memory is still 96.5 MB. Free memory was 73.7 MB in the beginning and 44.4 MB in the end (delta: 29.2 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:01:42,859 INFO L168 Benchmark]: Witness Printer took 79.55 ms. Allocated memory is still 96.5 MB. Free memory was 44.3 MB in the beginning and 41.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:01:42,862 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 77.6 MB. Free memory is still 44.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 261.31 ms. Allocated memory is still 96.5 MB. Free memory was 67.3 MB in the beginning and 58.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.24 ms. Allocated memory is still 96.5 MB. Free memory was 58.3 MB in the beginning and 56.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.99 ms. Allocated memory is still 96.5 MB. Free memory was 56.8 MB in the beginning and 55.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 613.52 ms. Allocated memory is still 96.5 MB. Free memory was 55.6 MB in the beginning and 74.3 MB in the end (delta: -18.7 MB). Peak memory consumption was 21.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 630.70 ms. Allocated memory is still 96.5 MB. Free memory was 73.7 MB in the beginning and 44.4 MB in the end (delta: 29.2 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * Witness Printer took 79.55 ms. Allocated memory is still 96.5 MB. Free memory was 44.3 MB in the beginning and 41.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 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: 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 4 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: length <= 2147483647 - InvariantResult [Line: 30]: 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, 13 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7 SDtfs, 13 SDslu, 0 SDs, 0 SdLazy, 13 SolverSat, 1 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=13occurred 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, 3 LocationsWithAnnotation, 3 PreInvPairs, 4 NumberOfFragments, 13 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 5 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 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...