./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/MutualRecursion_1a.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_b6500597-80a9-4d22-a307-9d5354ad3d4e/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6500597-80a9-4d22-a307-9d5354ad3d4e/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_b6500597-80a9-4d22-a307-9d5354ad3d4e/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6500597-80a9-4d22-a307-9d5354ad3d4e/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6500597-80a9-4d22-a307-9d5354ad3d4e/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_b6500597-80a9-4d22-a307-9d5354ad3d4e/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 727b654585befeb7272249307a5de272b17c4e2d2d1afa67fd11f4eb185d7508 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 20:16:04,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:16:04,191 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:16:04,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:16:04,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:16:04,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:16:04,236 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:16:04,240 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:16:04,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:16:04,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:16:04,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:16:04,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:16:04,253 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:16:04,256 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:16:04,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:16:04,260 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:16:04,261 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:16:04,262 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:16:04,272 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:16:04,276 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:16:04,278 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:16:04,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:16:04,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:16:04,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:16:04,285 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:16:04,285 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:16:04,285 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:16:04,286 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:16:04,287 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:16:04,288 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:16:04,288 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:16:04,289 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:16:04,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:16:04,291 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:16:04,292 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:16:04,292 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:16:04,293 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:16:04,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:16:04,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:16:04,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:16:04,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:16:04,295 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6500597-80a9-4d22-a307-9d5354ad3d4e/bin/uautomizer-j4sWxH34Be/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-10-21 20:16:04,319 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:16:04,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:16:04,320 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:16:04,320 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:16:04,321 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:16:04,321 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:16:04,322 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:16:04,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:16:04,322 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 20:16:04,322 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:16:04,322 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:16:04,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:16:04,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:16:04,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:16:04,323 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-21 20:16:04,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:16:04,323 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:16:04,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:16:04,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:16:04,324 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:16:04,324 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:16:04,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:16:04,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:16:04,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:16:04,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:16:04,325 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:16:04,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:16:04,326 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:16:04,326 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:16:04,326 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_b6500597-80a9-4d22-a307-9d5354ad3d4e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6500597-80a9-4d22-a307-9d5354ad3d4e/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 727b654585befeb7272249307a5de272b17c4e2d2d1afa67fd11f4eb185d7508 [2021-10-21 20:16:04,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:16:04,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:16:04,593 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:16:04,595 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:16:04,596 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:16:04,596 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6500597-80a9-4d22-a307-9d5354ad3d4e/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c [2021-10-21 20:16:04,660 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6500597-80a9-4d22-a307-9d5354ad3d4e/bin/uautomizer-j4sWxH34Be/data/fcfc1379f/56b976c6090448c09a35c1a605a5b54c/FLAG39df885a1 [2021-10-21 20:16:05,083 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:16:05,083 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6500597-80a9-4d22-a307-9d5354ad3d4e/sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c [2021-10-21 20:16:05,088 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6500597-80a9-4d22-a307-9d5354ad3d4e/bin/uautomizer-j4sWxH34Be/data/fcfc1379f/56b976c6090448c09a35c1a605a5b54c/FLAG39df885a1 [2021-10-21 20:16:05,484 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6500597-80a9-4d22-a307-9d5354ad3d4e/bin/uautomizer-j4sWxH34Be/data/fcfc1379f/56b976c6090448c09a35c1a605a5b54c [2021-10-21 20:16:05,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:16:05,488 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:16:05,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:16:05,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:16:05,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:16:05,494 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:16:05" (1/1) ... [2021-10-21 20:16:05,496 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bcb5f11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:16:05, skipping insertion in model container [2021-10-21 20:16:05,496 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:16:05" (1/1) ... [2021-10-21 20:16:05,503 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:16:05,529 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:16:05,671 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:16:05,675 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:16:05,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:16:05,713 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:16:05,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:16:05 WrapperNode [2021-10-21 20:16:05,714 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:16:05,715 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:16:05,715 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:16:05,716 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:16:05,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:16:05" (1/1) ... [2021-10-21 20:16:05,730 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:16:05" (1/1) ... [2021-10-21 20:16:05,746 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:16:05,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:16:05,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:16:05,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:16:05,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:16:05" (1/1) ... [2021-10-21 20:16:05,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:16:05" (1/1) ... [2021-10-21 20:16:05,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:16:05" (1/1) ... [2021-10-21 20:16:05,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:16:05" (1/1) ... [2021-10-21 20:16:05,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:16:05" (1/1) ... [2021-10-21 20:16:05,759 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:16:05" (1/1) ... [2021-10-21 20:16:05,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:16:05" (1/1) ... [2021-10-21 20:16:05,762 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:16:05,763 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:16:05,763 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:16:05,763 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:16:05,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:16:05" (1/1) ... [2021-10-21 20:16:05,772 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:16:05,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6500597-80a9-4d22-a307-9d5354ad3d4e/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:05,792 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6500597-80a9-4d22-a307-9d5354ad3d4e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:05,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6500597-80a9-4d22-a307-9d5354ad3d4e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:16:05,838 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-10-21 20:16:05,839 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-10-21 20:16:05,839 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-10-21 20:16:05,839 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-10-21 20:16:05,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:16:05,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:16:06,035 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:16:06,035 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-21 20:16:06,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:16:06 BoogieIcfgContainer [2021-10-21 20:16:06,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:16:06,047 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:16:06,047 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:16:06,062 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:16:06,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:16:05" (1/3) ... [2021-10-21 20:16:06,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656ca3ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:16:06, skipping insertion in model container [2021-10-21 20:16:06,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:16:05" (2/3) ... [2021-10-21 20:16:06,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656ca3ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:16:06, skipping insertion in model container [2021-10-21 20:16:06,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:16:06" (3/3) ... [2021-10-21 20:16:06,066 INFO L111 eAbstractionObserver]: Analyzing ICFG MutualRecursion_1a.c [2021-10-21 20:16:06,071 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:16:06,081 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-21 20:16:06,133 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:16:06,140 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 20:16:06,140 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-10-21 20:16:06,157 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 24 states have (on average 1.5) internal successors, (36), 34 states have internal predecessors, (36), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-10-21 20:16:06,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-21 20:16:06,162 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:16:06,163 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-21 20:16:06,163 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2021-10-21 20:16:06,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:06,169 INFO L82 PathProgramCache]: Analyzing trace with hash 68150020, now seen corresponding path program 1 times [2021-10-21 20:16:06,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:16:06,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061384127] [2021-10-21 20:16:06,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:16:06,180 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:16:06,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:06,404 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 20:16:06,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:16:06,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061384127] [2021-10-21 20:16:06,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061384127] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:16:06,407 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:16:06,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:16:06,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778288149] [2021-10-21 20:16:06,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:16:06,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:16:06,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:16:06,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:16:06,443 INFO L87 Difference]: Start difference. First operand has 42 states, 24 states have (on average 1.5) internal successors, (36), 34 states have internal predecessors, (36), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:16:06,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:16:06,559 INFO L93 Difference]: Finished difference Result 64 states and 71 transitions. [2021-10-21 20:16:06,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:16:06,561 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 20:16:06,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:16:06,570 INFO L225 Difference]: With dead ends: 64 [2021-10-21 20:16:06,570 INFO L226 Difference]: Without dead ends: 56 [2021-10-21 20:16:06,573 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.4ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:16:06,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-21 20:16:06,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2021-10-21 20:16:06,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 40 states have internal predecessors, (46), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-10-21 20:16:06,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2021-10-21 20:16:06,617 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 5 [2021-10-21 20:16:06,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:16:06,618 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2021-10-21 20:16:06,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:16:06,618 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2021-10-21 20:16:06,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-21 20:16:06,619 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:16:06,619 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-21 20:16:06,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 20:16:06,620 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2021-10-21 20:16:06,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:06,621 INFO L82 PathProgramCache]: Analyzing trace with hash 2112650676, now seen corresponding path program 1 times [2021-10-21 20:16:06,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:16:06,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339773366] [2021-10-21 20:16:06,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:16:06,622 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:16:06,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:06,643 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 20:16:06,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:16:06,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339773366] [2021-10-21 20:16:06,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339773366] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:16:06,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:16:06,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 20:16:06,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795902982] [2021-10-21 20:16:06,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:16:06,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:16:06,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:16:06,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:16:06,648 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:16:06,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:16:06,667 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2021-10-21 20:16:06,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:16:06,668 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-21 20:16:06,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:16:06,670 INFO L225 Difference]: With dead ends: 52 [2021-10-21 20:16:06,670 INFO L226 Difference]: Without dead ends: 50 [2021-10-21 20:16:06,671 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:16:06,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-21 20:16:06,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2021-10-21 20:16:06,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 38 states have internal predecessors, (42), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-10-21 20:16:06,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2021-10-21 20:16:06,682 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 6 [2021-10-21 20:16:06,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:16:06,683 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2021-10-21 20:16:06,683 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:16:06,683 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2021-10-21 20:16:06,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-21 20:16:06,684 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:16:06,684 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:16:06,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 20:16:06,685 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2021-10-21 20:16:06,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:06,686 INFO L82 PathProgramCache]: Analyzing trace with hash 803040358, now seen corresponding path program 1 times [2021-10-21 20:16:06,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:16:06,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917974798] [2021-10-21 20:16:06,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:16:06,687 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:16:06,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:06,823 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:16:06,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:16:06,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917974798] [2021-10-21 20:16:06,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917974798] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:16:06,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:16:06,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 20:16:06,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78249394] [2021-10-21 20:16:06,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 20:16:06,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:16:06,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 20:16:06,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-21 20:16:06,827 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:16:07,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:16:07,011 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2021-10-21 20:16:07,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 20:16:07,012 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-21 20:16:07,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:16:07,014 INFO L225 Difference]: With dead ends: 66 [2021-10-21 20:16:07,014 INFO L226 Difference]: Without dead ends: 63 [2021-10-21 20:16:07,015 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 91.1ms TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-10-21 20:16:07,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-21 20:16:07,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2021-10-21 20:16:07,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 46 states have internal predecessors, (53), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-10-21 20:16:07,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2021-10-21 20:16:07,028 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 13 [2021-10-21 20:16:07,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:16:07,028 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2021-10-21 20:16:07,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:16:07,029 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2021-10-21 20:16:07,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 20:16:07,030 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:16:07,030 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:16:07,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 20:16:07,031 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2021-10-21 20:16:07,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:07,032 INFO L82 PathProgramCache]: Analyzing trace with hash -265858514, now seen corresponding path program 1 times [2021-10-21 20:16:07,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:16:07,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171123759] [2021-10-21 20:16:07,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:16:07,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:16:07,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:07,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 20:16:07,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:07,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-21 20:16:07,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:16:07,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171123759] [2021-10-21 20:16:07,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171123759] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:16:07,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:16:07,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 20:16:07,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074199074] [2021-10-21 20:16:07,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:16:07,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:16:07,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:16:07,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:16:07,077 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:16:07,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:16:07,089 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2021-10-21 20:16:07,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:16:07,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-10-21 20:16:07,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:16:07,091 INFO L225 Difference]: With dead ends: 61 [2021-10-21 20:16:07,092 INFO L226 Difference]: Without dead ends: 60 [2021-10-21 20:16:07,092 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:16:07,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-21 20:16:07,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2021-10-21 20:16:07,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 45 states have internal predecessors, (52), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-10-21 20:16:07,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2021-10-21 20:16:07,104 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 17 [2021-10-21 20:16:07,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:16:07,104 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2021-10-21 20:16:07,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:16:07,105 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2021-10-21 20:16:07,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-21 20:16:07,106 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:16:07,106 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:16:07,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 20:16:07,107 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2021-10-21 20:16:07,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:07,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1650762684, now seen corresponding path program 1 times [2021-10-21 20:16:07,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:16:07,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761063255] [2021-10-21 20:16:07,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:16:07,109 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:16:07,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:07,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-21 20:16:07,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:07,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-10-21 20:16:07,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:07,179 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-21 20:16:07,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:16:07,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761063255] [2021-10-21 20:16:07,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761063255] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:16:07,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:16:07,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 20:16:07,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411536970] [2021-10-21 20:16:07,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:16:07,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:16:07,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:16:07,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:16:07,183 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 20:16:07,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:16:07,230 INFO L93 Difference]: Finished difference Result 93 states and 122 transitions. [2021-10-21 20:16:07,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:16:07,234 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2021-10-21 20:16:07,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:16:07,236 INFO L225 Difference]: With dead ends: 93 [2021-10-21 20:16:07,237 INFO L226 Difference]: Without dead ends: 92 [2021-10-21 20:16:07,237 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.5ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:16:07,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-21 20:16:07,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 78. [2021-10-21 20:16:07,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 58 states have (on average 1.1724137931034482) internal successors, (68), 59 states have internal predecessors, (68), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (20), 14 states have call predecessors, (20), 11 states have call successors, (20) [2021-10-21 20:16:07,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2021-10-21 20:16:07,264 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 21 [2021-10-21 20:16:07,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:16:07,264 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2021-10-21 20:16:07,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 20:16:07,265 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2021-10-21 20:16:07,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-21 20:16:07,266 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:16:07,266 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:16:07,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-21 20:16:07,267 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2021-10-21 20:16:07,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:07,267 INFO L82 PathProgramCache]: Analyzing trace with hash 365964416, now seen corresponding path program 1 times [2021-10-21 20:16:07,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:16:07,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231425728] [2021-10-21 20:16:07,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:16:07,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:16:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:07,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-21 20:16:07,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:07,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-10-21 20:16:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:07,329 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-21 20:16:07,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:16:07,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231425728] [2021-10-21 20:16:07,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231425728] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:16:07,330 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:16:07,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 20:16:07,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940248043] [2021-10-21 20:16:07,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:16:07,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:16:07,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:16:07,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:16:07,333 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 20:16:07,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:16:07,373 INFO L93 Difference]: Finished difference Result 93 states and 119 transitions. [2021-10-21 20:16:07,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:16:07,374 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2021-10-21 20:16:07,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:16:07,375 INFO L225 Difference]: With dead ends: 93 [2021-10-21 20:16:07,375 INFO L226 Difference]: Without dead ends: 89 [2021-10-21 20:16:07,376 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.2ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:16:07,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-10-21 20:16:07,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 78. [2021-10-21 20:16:07,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 58 states have (on average 1.1724137931034482) internal successors, (68), 60 states have internal predecessors, (68), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (19), 13 states have call predecessors, (19), 11 states have call successors, (19) [2021-10-21 20:16:07,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 99 transitions. [2021-10-21 20:16:07,402 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 99 transitions. Word has length 22 [2021-10-21 20:16:07,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:16:07,403 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 99 transitions. [2021-10-21 20:16:07,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 20:16:07,403 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 99 transitions. [2021-10-21 20:16:07,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-21 20:16:07,406 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:16:07,406 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:16:07,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-21 20:16:07,407 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2021-10-21 20:16:07,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:07,408 INFO L82 PathProgramCache]: Analyzing trace with hash -2082036524, now seen corresponding path program 1 times [2021-10-21 20:16:07,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:16:07,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914702651] [2021-10-21 20:16:07,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:16:07,410 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:16:07,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:07,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-21 20:16:07,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:07,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-10-21 20:16:07,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:07,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-10-21 20:16:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:07,527 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-21 20:16:07,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:16:07,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914702651] [2021-10-21 20:16:07,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914702651] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:16:07,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077294348] [2021-10-21 20:16:07,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:16:07,530 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:16:07,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6500597-80a9-4d22-a307-9d5354ad3d4e/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:07,534 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6500597-80a9-4d22-a307-9d5354ad3d4e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:16:07,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6500597-80a9-4d22-a307-9d5354ad3d4e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 20:16:07,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:07,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 20:16:07,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:16:07,793 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-21 20:16:07,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077294348] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:16:07,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:16:07,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2021-10-21 20:16:07,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762685714] [2021-10-21 20:16:07,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:16:07,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:16:07,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:16:07,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:16:07,804 INFO L87 Difference]: Start difference. First operand 78 states and 99 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-10-21 20:16:07,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:16:07,987 INFO L93 Difference]: Finished difference Result 123 states and 156 transitions. [2021-10-21 20:16:07,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 20:16:07,987 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 32 [2021-10-21 20:16:07,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:16:07,988 INFO L225 Difference]: With dead ends: 123 [2021-10-21 20:16:07,988 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 20:16:07,994 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 130.4ms TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-10-21 20:16:07,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 20:16:07,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 20:16:07,994 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 20:16:07,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 20:16:07,996 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2021-10-21 20:16:07,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:16:07,997 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 20:16:07,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-10-21 20:16:07,998 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 20:16:07,998 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 20:16:08,000 INFO L764 garLoopResultBuilder]: Registering result SAFE for location fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:16:08,001 INFO L764 garLoopResultBuilder]: Registering result SAFE for location fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:16:08,001 INFO L764 garLoopResultBuilder]: Registering result SAFE for location fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:16:08,002 INFO L764 garLoopResultBuilder]: Registering result SAFE for location fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:16:08,002 INFO L764 garLoopResultBuilder]: Registering result SAFE for location gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:16:08,002 INFO L764 garLoopResultBuilder]: Registering result SAFE for location gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:16:08,002 INFO L764 garLoopResultBuilder]: Registering result SAFE for location gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:16:08,003 INFO L764 garLoopResultBuilder]: Registering result SAFE for location gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:16:08,003 INFO L764 garLoopResultBuilder]: Registering result SAFE for location gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:16:08,003 INFO L764 garLoopResultBuilder]: Registering result SAFE for location gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:16:08,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6500597-80a9-4d22-a307-9d5354ad3d4e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:08,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6500597-80a9-4d22-a307-9d5354ad3d4e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-21 20:16:08,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 20:16:08,222 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,231 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,232 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,242 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,243 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,243 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,244 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,245 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,245 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,246 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,246 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,248 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,251 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,255 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,264 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,265 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,266 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,267 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,267 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,269 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,270 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,271 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,274 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,278 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,279 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,280 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,286 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,288 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,290 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,291 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,291 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,292 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,293 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,293 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,294 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,294 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,295 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,296 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,297 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,297 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,298 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,299 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,299 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,301 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,302 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,302 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,303 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,304 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,305 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:16:08,409 INFO L857 garLoopResultBuilder]: For program point fFINAL(lines 11 15) no Hoare annotation was computed. [2021-10-21 20:16:08,409 INFO L853 garLoopResultBuilder]: At program point L14(line 14) the Hoare annotation is: (and (or (not (<= |f_#in~x| 2147483646)) (and (<= f_~x 2147483646) (<= |f_#in~x| f_~x) (<= 1 f_~x))) (not (<= (+ |f_#in~x| 1) 0))) [2021-10-21 20:16:08,409 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-10-21 20:16:08,409 INFO L857 garLoopResultBuilder]: For program point L14-1(line 14) no Hoare annotation was computed. [2021-10-21 20:16:08,410 INFO L857 garLoopResultBuilder]: For program point L14-2(line 14) no Hoare annotation was computed. [2021-10-21 20:16:08,410 INFO L857 garLoopResultBuilder]: For program point L14-3(line 14) no Hoare annotation was computed. [2021-10-21 20:16:08,410 INFO L853 garLoopResultBuilder]: At program point L14-4(line 14) the Hoare annotation is: (and (or (not (<= |f_#in~x| 2147483646)) (and (<= f_~x 2147483646) (<= |f_#in~x| f_~x) (<= 1 f_~x))) (not (<= (+ |f_#in~x| 1) 0))) [2021-10-21 20:16:08,410 INFO L857 garLoopResultBuilder]: For program point L14-5(line 14) no Hoare annotation was computed. [2021-10-21 20:16:08,411 INFO L857 garLoopResultBuilder]: For program point fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-10-21 20:16:08,411 INFO L857 garLoopResultBuilder]: For program point fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-10-21 20:16:08,411 INFO L857 garLoopResultBuilder]: For program point L14-6(line 14) no Hoare annotation was computed. [2021-10-21 20:16:08,411 INFO L857 garLoopResultBuilder]: For program point fEXIT(lines 11 15) no Hoare annotation was computed. [2021-10-21 20:16:08,411 INFO L857 garLoopResultBuilder]: For program point L14-7(line 14) no Hoare annotation was computed. [2021-10-21 20:16:08,412 INFO L860 garLoopResultBuilder]: At program point fENTRY(lines 11 15) the Hoare annotation is: true [2021-10-21 20:16:08,412 INFO L857 garLoopResultBuilder]: For program point fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-10-21 20:16:08,412 INFO L857 garLoopResultBuilder]: For program point fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-10-21 20:16:08,412 INFO L857 garLoopResultBuilder]: For program point gFINAL(lines 17 21) no Hoare annotation was computed. [2021-10-21 20:16:08,412 INFO L857 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2021-10-21 20:16:08,412 INFO L857 garLoopResultBuilder]: For program point L19(lines 19 20) no Hoare annotation was computed. [2021-10-21 20:16:08,413 INFO L857 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2021-10-21 20:16:08,413 INFO L853 garLoopResultBuilder]: At program point L20-2(line 20) the Hoare annotation is: (or (not (<= |g_#in~x| 2147483647)) (and (= |g_#in~x| g_~x) (<= 1 g_~x))) [2021-10-21 20:16:08,413 INFO L857 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2021-10-21 20:16:08,413 INFO L857 garLoopResultBuilder]: For program point L20-4(line 20) no Hoare annotation was computed. [2021-10-21 20:16:08,413 INFO L857 garLoopResultBuilder]: For program point L20-5(line 20) no Hoare annotation was computed. [2021-10-21 20:16:08,414 INFO L853 garLoopResultBuilder]: At program point L20-6(line 20) the Hoare annotation is: (or (and (<= g_~x 1) (= |g_#in~x| g_~x) (<= 1 g_~x) (<= |g_#t~ret2| 0) (<= 0 |g_#t~ret2|)) (not (<= |g_#in~x| 2147483647))) [2021-10-21 20:16:08,414 INFO L857 garLoopResultBuilder]: For program point L20-7(line 20) no Hoare annotation was computed. [2021-10-21 20:16:08,414 INFO L857 garLoopResultBuilder]: For program point L20-8(line 20) no Hoare annotation was computed. [2021-10-21 20:16:08,414 INFO L857 garLoopResultBuilder]: For program point L20-9(line 20) no Hoare annotation was computed. [2021-10-21 20:16:08,414 INFO L857 garLoopResultBuilder]: For program point gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-21 20:16:08,415 INFO L857 garLoopResultBuilder]: For program point gEXIT(lines 17 21) no Hoare annotation was computed. [2021-10-21 20:16:08,415 INFO L857 garLoopResultBuilder]: For program point gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-21 20:16:08,415 INFO L860 garLoopResultBuilder]: At program point gENTRY(lines 17 21) the Hoare annotation is: true [2021-10-21 20:16:08,415 INFO L857 garLoopResultBuilder]: For program point gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-21 20:16:08,415 INFO L857 garLoopResultBuilder]: For program point gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-21 20:16:08,416 INFO L857 garLoopResultBuilder]: For program point gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-21 20:16:08,416 INFO L857 garLoopResultBuilder]: For program point gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-21 20:16:08,416 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 20:16:08,416 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 20:16:08,416 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 20:16:08,417 INFO L853 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2021-10-21 20:16:08,417 INFO L857 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2021-10-21 20:16:08,417 INFO L857 garLoopResultBuilder]: For program point L24(lines 24 27) no Hoare annotation was computed. [2021-10-21 20:16:08,422 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:16:08,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:16:08 BoogieIcfgContainer [2021-10-21 20:16:08,425 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:16:08,426 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:16:08,426 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:16:08,426 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:16:08,427 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:16:06" (3/4) ... [2021-10-21 20:16:08,430 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 20:16:08,437 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2021-10-21 20:16:08,437 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure g [2021-10-21 20:16:08,442 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-21 20:16:08,442 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-21 20:16:08,478 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6500597-80a9-4d22-a307-9d5354ad3d4e/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:16:08,478 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:16:08,480 INFO L168 Benchmark]: Toolchain (without parser) took 2990.51 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 54.1 MB in the beginning and 68.6 MB in the end (delta: -14.5 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:16:08,480 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 94.4 MB. Free memory is still 70.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:16:08,480 INFO L168 Benchmark]: CACSL2BoogieTranslator took 224.52 ms. Allocated memory is still 94.4 MB. Free memory was 53.9 MB in the beginning and 72.2 MB in the end (delta: -18.3 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2021-10-21 20:16:08,481 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.59 ms. Allocated memory is still 94.4 MB. Free memory was 72.1 MB in the beginning and 70.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:16:08,481 INFO L168 Benchmark]: Boogie Preprocessor took 15.69 ms. Allocated memory is still 94.4 MB. Free memory was 70.6 MB in the beginning and 69.8 MB in the end (delta: 846.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:16:08,482 INFO L168 Benchmark]: RCFGBuilder took 274.40 ms. Allocated memory is still 94.4 MB. Free memory was 69.8 MB in the beginning and 60.7 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:16:08,483 INFO L168 Benchmark]: TraceAbstraction took 2378.83 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 60.2 MB in the beginning and 71.9 MB in the end (delta: -11.7 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. [2021-10-21 20:16:08,490 INFO L168 Benchmark]: Witness Printer took 52.35 ms. Allocated memory is still 113.2 MB. Free memory was 71.9 MB in the beginning and 68.6 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:16:08,492 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 94.4 MB. Free memory is still 70.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 224.52 ms. Allocated memory is still 94.4 MB. Free memory was 53.9 MB in the beginning and 72.2 MB in the end (delta: -18.3 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.59 ms. Allocated memory is still 94.4 MB. Free memory was 72.1 MB in the beginning and 70.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 15.69 ms. Allocated memory is still 94.4 MB. Free memory was 70.6 MB in the beginning and 69.8 MB in the end (delta: 846.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 274.40 ms. Allocated memory is still 94.4 MB. Free memory was 69.8 MB in the beginning and 60.7 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2378.83 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 60.2 MB in the beginning and 71.9 MB in the end (delta: -11.7 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. * Witness Printer took 52.35 ms. Allocated memory is still 113.2 MB. Free memory was 71.9 MB in the beginning and 68.6 MB in the end (delta: 3.3 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: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: 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 3 procedures, 42 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 2290.4ms, OverallIterations: 7, TraceHistogramMax: 3, EmptinessCheckTime: 15.9ms, AutomataDifference: 672.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 190.6ms, InitialAbstractionConstructionTime: 13.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 221 SDtfs, 175 SDslu, 550 SDs, 0 SdLazy, 342 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 266.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 294.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=5, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 118.8ms AutomataMinimizationTime, 7 MinimizatonAttempts, 39 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 7 LocationsWithAnnotation, 55 PreInvPairs, 61 NumberOfFragments, 82 HoareAnnotationTreeSize, 55 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 85.2ms HoareSimplificationTime, 7 FomulaSimplificationsInter, 75 FormulaSimplificationTreeSizeReductionInter, 96.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 19.4ms SsaConstructionTime, 122.8ms SatisfiabilityAnalysisTime, 672.7ms InterpolantComputationTime, 148 NumberOfCodeBlocks, 148 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 140 ConstructedInterpolants, 0 QuantifiedInterpolants, 266 SizeOfPredicates, 2 NumberOfNonLiveVariables, 69 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 29/33 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-21 20:16:08,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6500597-80a9-4d22-a307-9d5354ad3d4e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...