./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/cstrcspn.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b634317b-ebdc-4418-b857-0ce4cbd3a5a1/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b634317b-ebdc-4418-b857-0ce4cbd3a5a1/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b634317b-ebdc-4418-b857-0ce4cbd3a5a1/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b634317b-ebdc-4418-b857-0ce4cbd3a5a1/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/cstrcspn.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b634317b-ebdc-4418-b857-0ce4cbd3a5a1/bin/uautomizer-j4sWxH34Be/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b634317b-ebdc-4418-b857-0ce4cbd3a5a1/bin/uautomizer-j4sWxH34Be --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 475c55af8223c9a32959cab18313111543780f4e37aae19089bc5e981127ec42 ......................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:18:14,480 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:18:14,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:18:14,513 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:18:14,514 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:18:14,515 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:18:14,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:18:14,519 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:18:14,521 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:18:14,523 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:18:14,524 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:18:14,525 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:18:14,526 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:18:14,527 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:18:14,529 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:18:14,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:18:14,531 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:18:14,532 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:18:14,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:18:14,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:18:14,539 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:18:14,541 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:18:14,542 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:18:14,543 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:18:14,547 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:18:14,548 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:18:14,548 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:18:14,549 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:18:14,550 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:18:14,551 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:18:14,551 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:18:14,552 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:18:14,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:18:14,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:18:14,555 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:18:14,556 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:18:14,557 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:18:14,557 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:18:14,557 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:18:14,559 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:18:14,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:18:14,562 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b634317b-ebdc-4418-b857-0ce4cbd3a5a1/bin/uautomizer-j4sWxH34Be/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-10-21 19:18:14,587 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:18:14,587 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:18:14,588 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:18:14,588 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:18:14,589 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:18:14,589 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:18:14,589 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:18:14,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:18:14,590 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:18:14,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:18:14,590 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:18:14,590 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:18:14,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:18:14,591 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:18:14,591 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-21 19:18:14,591 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:18:14,591 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:18:14,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:18:14,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:18:14,592 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:18:14,592 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:18:14,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:18:14,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:18:14,593 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:18:14,593 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:18:14,593 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:18:14,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:18:14,594 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:18:14,594 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:18:14,594 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b634317b-ebdc-4418-b857-0ce4cbd3a5a1/bin/uautomizer-j4sWxH34Be/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b634317b-ebdc-4418-b857-0ce4cbd3a5a1/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 475c55af8223c9a32959cab18313111543780f4e37aae19089bc5e981127ec42 [2021-10-21 19:18:14,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:18:14,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:18:14,859 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:18:14,860 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:18:14,862 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:18:14,863 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b634317b-ebdc-4418-b857-0ce4cbd3a5a1/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/termination-crafted-lit/cstrcspn.c [2021-10-21 19:18:14,956 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b634317b-ebdc-4418-b857-0ce4cbd3a5a1/bin/uautomizer-j4sWxH34Be/data/04e351701/dc4f5d24e8334ff2af2dbb22c4b21683/FLAG9d23a44ec [2021-10-21 19:18:15,379 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:18:15,380 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b634317b-ebdc-4418-b857-0ce4cbd3a5a1/sv-benchmarks/c/termination-crafted-lit/cstrcspn.c [2021-10-21 19:18:15,388 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b634317b-ebdc-4418-b857-0ce4cbd3a5a1/bin/uautomizer-j4sWxH34Be/data/04e351701/dc4f5d24e8334ff2af2dbb22c4b21683/FLAG9d23a44ec [2021-10-21 19:18:15,790 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b634317b-ebdc-4418-b857-0ce4cbd3a5a1/bin/uautomizer-j4sWxH34Be/data/04e351701/dc4f5d24e8334ff2af2dbb22c4b21683 [2021-10-21 19:18:15,792 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:18:15,794 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:18:15,796 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:18:15,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:18:15,812 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:18:15,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:18:15" (1/1) ... [2021-10-21 19:18:15,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1be54372 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:18:15, skipping insertion in model container [2021-10-21 19:18:15,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:18:15" (1/1) ... [2021-10-21 19:18:15,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:18:15,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:18:16,029 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:18:16,036 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:18:16,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:18:16,065 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:18:16,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:18:16 WrapperNode [2021-10-21 19:18:16,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:18:16,067 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:18:16,067 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:18:16,067 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:18:16,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:18:16" (1/1) ... [2021-10-21 19:18:16,087 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:18:16" (1/1) ... [2021-10-21 19:18:16,112 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:18:16,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:18:16,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:18:16,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:18:16,122 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:18:16" (1/1) ... [2021-10-21 19:18:16,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:18:16" (1/1) ... [2021-10-21 19:18:16,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:18:16" (1/1) ... [2021-10-21 19:18:16,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:18:16" (1/1) ... [2021-10-21 19:18:16,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:18:16" (1/1) ... [2021-10-21 19:18:16,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:18:16" (1/1) ... [2021-10-21 19:18:16,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:18:16" (1/1) ... [2021-10-21 19:18:16,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:18:16,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:18:16,141 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:18:16,141 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:18:16,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:18:16" (1/1) ... [2021-10-21 19:18:16,158 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:18:16,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b634317b-ebdc-4418-b857-0ce4cbd3a5a1/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:18:16,180 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b634317b-ebdc-4418-b857-0ce4cbd3a5a1/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:18:16,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b634317b-ebdc-4418-b857-0ce4cbd3a5a1/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:18:16,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 19:18:16,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-21 19:18:16,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:18:16,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:18:16,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-21 19:18:16,465 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:18:16,465 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-21 19:18:16,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:18:16 BoogieIcfgContainer [2021-10-21 19:18:16,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:18:16,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:18:16,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:18:16,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:18:16,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:18:15" (1/3) ... [2021-10-21 19:18:16,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fa1a2f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:18:16, skipping insertion in model container [2021-10-21 19:18:16,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:18:16" (2/3) ... [2021-10-21 19:18:16,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fa1a2f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:18:16, skipping insertion in model container [2021-10-21 19:18:16,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:18:16" (3/3) ... [2021-10-21 19:18:16,475 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrcspn.c [2021-10-21 19:18:16,481 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:18:16,481 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-10-21 19:18:16,530 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:18:16,537 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 19:18:16,537 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-10-21 19:18:16,552 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 34 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:16,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-21 19:18:16,557 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:18:16,558 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-21 19:18:16,558 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-21 19:18:16,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:18:16,564 INFO L82 PathProgramCache]: Analyzing trace with hash 925607, now seen corresponding path program 1 times [2021-10-21 19:18:16,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:18:16,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697491807] [2021-10-21 19:18:16,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:18:16,575 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:18:16,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:16,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:18:16,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:18:16,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697491807] [2021-10-21 19:18:16,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697491807] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:18:16,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:18:16,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:18:16,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918736332] [2021-10-21 19:18:16,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:18:16,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:18:16,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:18:16,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:18:16,738 INFO L87 Difference]: Start difference. First operand has 35 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 34 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:16,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:18:16,874 INFO L93 Difference]: Finished difference Result 75 states and 96 transitions. [2021-10-21 19:18:16,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:18:16,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-21 19:18:16,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:18:16,884 INFO L225 Difference]: With dead ends: 75 [2021-10-21 19:18:16,899 INFO L226 Difference]: Without dead ends: 30 [2021-10-21 19:18:16,902 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:18:16,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-21 19:18:16,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2021-10-21 19:18:16,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:16,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2021-10-21 19:18:16,960 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 4 [2021-10-21 19:18:16,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:18:16,961 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-10-21 19:18:16,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:16,961 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2021-10-21 19:18:16,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-21 19:18:16,962 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:18:16,962 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-21 19:18:16,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:18:16,986 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-21 19:18:16,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:18:16,987 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2021-10-21 19:18:16,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:18:16,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799016123] [2021-10-21 19:18:16,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:18:16,988 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:18:16,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:17,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:18:17,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:18:17,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799016123] [2021-10-21 19:18:17,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799016123] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:18:17,015 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:18:17,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:18:17,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779186174] [2021-10-21 19:18:17,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:18:17,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:18:17,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:18:17,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:18:17,034 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:17,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:18:17,070 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2021-10-21 19:18:17,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:18:17,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-21 19:18:17,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:18:17,071 INFO L225 Difference]: With dead ends: 27 [2021-10-21 19:18:17,072 INFO L226 Difference]: Without dead ends: 23 [2021-10-21 19:18:17,072 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:18:17,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-21 19:18:17,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 17. [2021-10-21 19:18:17,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:17,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-10-21 19:18:17,076 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 4 [2021-10-21 19:18:17,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:18:17,076 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-10-21 19:18:17,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:17,077 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-10-21 19:18:17,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-21 19:18:17,077 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:18:17,078 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-21 19:18:17,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:18:17,078 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-21 19:18:17,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:18:17,079 INFO L82 PathProgramCache]: Analyzing trace with hash 28693859, now seen corresponding path program 1 times [2021-10-21 19:18:17,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:18:17,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527505622] [2021-10-21 19:18:17,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:18:17,080 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:18:17,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:17,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:18:17,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:18:17,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527505622] [2021-10-21 19:18:17,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527505622] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:18:17,129 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:18:17,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:18:17,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243642877] [2021-10-21 19:18:17,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:18:17,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:18:17,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:18:17,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:18:17,137 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:17,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:18:17,178 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-10-21 19:18:17,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:18:17,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-21 19:18:17,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:18:17,180 INFO L225 Difference]: With dead ends: 17 [2021-10-21 19:18:17,180 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 19:18:17,180 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:18:17,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 19:18:17,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 19:18:17,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:17,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 19:18:17,181 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2021-10-21 19:18:17,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:18:17,182 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:18:17,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:17,182 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 19:18:17,182 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 19:18:17,185 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:18:17,186 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:18:17,186 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:18:17,186 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:18:17,186 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:18:17,187 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:18:17,187 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:18:17,187 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:18:17,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 19:18:17,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 19:18:17,195 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:18:17,198 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:18:17,199 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:18:17,201 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:18:17,219 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:18:17,220 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:18:17,232 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-10-21 19:18:17,232 INFO L853 garLoopResultBuilder]: At program point L19(lines 12 20) the Hoare annotation is: (and (<= 1 ULTIMATE.start_build_nondet_String_~length~0) (<= ULTIMATE.start_build_nondet_String_~length~0 2147483647)) [2021-10-21 19:18:17,233 INFO L860 garLoopResultBuilder]: At program point L19-1(lines 12 20) the Hoare annotation is: true [2021-10-21 19:18:17,233 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-10-21 19:18:17,233 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-21 19:18:17,233 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-10-21 19:18:17,233 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 19:18:17,234 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-10-21 19:18:17,234 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 19:18:17,234 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-10-21 19:18:17,234 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 19:18:17,234 INFO L857 garLoopResultBuilder]: For program point L33-1(line 33) no Hoare annotation was computed. [2021-10-21 19:18:17,235 INFO L857 garLoopResultBuilder]: For program point L33-3(lines 33 34) no Hoare annotation was computed. [2021-10-21 19:18:17,235 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-10-21 19:18:17,235 INFO L860 garLoopResultBuilder]: At program point L33-5(lines 33 34) the Hoare annotation is: true [2021-10-21 19:18:17,235 INFO L857 garLoopResultBuilder]: For program point L33-6(lines 33 34) no Hoare annotation was computed. [2021-10-21 19:18:17,235 INFO L857 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-10-21 19:18:17,236 INFO L857 garLoopResultBuilder]: For program point L17-1(line 17) no Hoare annotation was computed. [2021-10-21 19:18:17,236 INFO L860 garLoopResultBuilder]: At program point L42(lines 41 43) the Hoare annotation is: true [2021-10-21 19:18:17,236 INFO L860 garLoopResultBuilder]: At program point L38(lines 25 39) the Hoare annotation is: true [2021-10-21 19:18:17,236 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-10-21 19:18:17,237 INFO L857 garLoopResultBuilder]: For program point L30-1(lines 30 37) no Hoare annotation was computed. [2021-10-21 19:18:17,237 INFO L857 garLoopResultBuilder]: For program point L30-3(lines 30 37) no Hoare annotation was computed. [2021-10-21 19:18:17,237 INFO L860 garLoopResultBuilder]: At program point L30-4(lines 30 37) the Hoare annotation is: true [2021-10-21 19:18:17,237 INFO L857 garLoopResultBuilder]: For program point L30-5(lines 30 37) no Hoare annotation was computed. [2021-10-21 19:18:17,237 INFO L857 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-10-21 19:18:17,237 INFO L857 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-10-21 19:18:17,238 INFO L857 garLoopResultBuilder]: For program point L18-2(line 18) no Hoare annotation was computed. [2021-10-21 19:18:17,238 INFO L857 garLoopResultBuilder]: For program point L18-3(line 18) no Hoare annotation was computed. [2021-10-21 19:18:17,238 INFO L857 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2021-10-21 19:18:17,238 INFO L857 garLoopResultBuilder]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2021-10-21 19:18:17,238 INFO L857 garLoopResultBuilder]: For program point L14-3(lines 14 16) no Hoare annotation was computed. [2021-10-21 19:18:17,239 INFO L857 garLoopResultBuilder]: For program point L14-5(lines 14 16) no Hoare annotation was computed. [2021-10-21 19:18:17,239 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-10-21 19:18:17,239 INFO L857 garLoopResultBuilder]: For program point L35(lines 35 36) no Hoare annotation was computed. [2021-10-21 19:18:17,246 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:18:17,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:18:17 BoogieIcfgContainer [2021-10-21 19:18:17,265 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:18:17,266 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:18:17,266 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:18:17,266 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:18:17,267 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:18:16" (3/4) ... [2021-10-21 19:18:17,270 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 19:18:17,283 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-21 19:18:17,284 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 19:18:17,285 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:18:17,361 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b634317b-ebdc-4418-b857-0ce4cbd3a5a1/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:18:17,361 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:18:17,363 INFO L168 Benchmark]: Toolchain (without parser) took 1568.41 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 63.8 MB in the beginning and 82.1 MB in the end (delta: -18.3 MB). Peak memory consumption was 1.9 MB. Max. memory is 16.1 GB. [2021-10-21 19:18:17,364 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 98.6 MB. Free memory was 70.6 MB in the beginning and 70.5 MB in the end (delta: 31.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:18:17,365 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.34 ms. Allocated memory is still 98.6 MB. Free memory was 63.7 MB in the beginning and 74.3 MB in the end (delta: -10.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:18:17,366 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.51 ms. Allocated memory is still 98.6 MB. Free memory was 74.3 MB in the beginning and 72.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:18:17,366 INFO L168 Benchmark]: Boogie Preprocessor took 26.93 ms. Allocated memory is still 98.6 MB. Free memory was 72.6 MB in the beginning and 71.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:18:17,366 INFO L168 Benchmark]: RCFGBuilder took 326.80 ms. Allocated memory is still 98.6 MB. Free memory was 71.3 MB in the beginning and 59.5 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:18:17,367 INFO L168 Benchmark]: TraceAbstraction took 796.03 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 59.2 MB in the beginning and 85.7 MB in the end (delta: -26.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:18:17,368 INFO L168 Benchmark]: Witness Printer took 95.81 ms. Allocated memory is still 119.5 MB. Free memory was 85.7 MB in the beginning and 82.1 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:18:17,370 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 98.6 MB. Free memory was 70.6 MB in the beginning and 70.5 MB in the end (delta: 31.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 270.34 ms. Allocated memory is still 98.6 MB. Free memory was 63.7 MB in the beginning and 74.3 MB in the end (delta: -10.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.51 ms. Allocated memory is still 98.6 MB. Free memory was 74.3 MB in the beginning and 72.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.93 ms. Allocated memory is still 98.6 MB. Free memory was 72.6 MB in the beginning and 71.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 326.80 ms. Allocated memory is still 98.6 MB. Free memory was 71.3 MB in the beginning and 59.5 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 796.03 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 59.2 MB in the beginning and 85.7 MB in the end (delta: -26.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 95.81 ms. Allocated memory is still 119.5 MB. Free memory was 85.7 MB in the beginning and 82.1 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 718.2ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 10.0ms, AutomataDifference: 279.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 43.4ms, InitialAbstractionConstructionTime: 10.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 38 SDtfs, 47 SDslu, 20 SDs, 0 SdLazy, 52 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 121.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 40.1ms AutomataMinimizationTime, 3 MinimizatonAttempts, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 15 NumberOfFragments, 12 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 26.9ms HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 8.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 15.1ms SsaConstructionTime, 35.2ms SatisfiabilityAnalysisTime, 92.2ms InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 20 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 <= length && length <= 2147483647 - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-21 19:18:17,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b634317b-ebdc-4418-b857-0ce4cbd3a5a1/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...