./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 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daefbfe7-6a88-492a-ab3d-fd0bab059c05/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daefbfe7-6a88-492a-ab3d-fd0bab059c05/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daefbfe7-6a88-492a-ab3d-fd0bab059c05/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daefbfe7-6a88-492a-ab3d-fd0bab059c05/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daefbfe7-6a88-492a-ab3d-fd0bab059c05/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daefbfe7-6a88-492a-ab3d-fd0bab059c05/bin/uautomizer-WNIpwEf4Nt --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 c27ad91a5bec233234e07a14bfd5505e082df4cd ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:48:44,328 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:48:44,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:48:44,391 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:48:44,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:48:44,397 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:48:44,399 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:48:44,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:48:44,406 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:48:44,412 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:48:44,413 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:48:44,415 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:48:44,415 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:48:44,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:48:44,419 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:48:44,424 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:48:44,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:48:44,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:48:44,429 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:48:44,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:48:44,438 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:48:44,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:48:44,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:48:44,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:48:44,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:48:44,448 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:48:44,448 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:48:44,450 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:48:44,451 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:48:44,452 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:48:44,452 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:48:44,453 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:48:44,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:48:44,457 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:48:44,458 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:48:44,458 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:48:44,459 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:48:44,459 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:48:44,459 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:48:44,460 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:48:44,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:48:44,462 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daefbfe7-6a88-492a-ab3d-fd0bab059c05/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-10-13 00:48:44,499 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:48:44,499 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:48:44,500 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:48:44,500 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:48:44,501 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:48:44,501 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:48:44,501 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:48:44,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:48:44,502 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:48:44,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:48:44,502 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:48:44,502 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 00:48:44,503 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:48:44,503 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 00:48:44,503 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-13 00:48:44,503 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:48:44,503 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:48:44,503 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 00:48:44,504 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:48:44,504 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:48:44,504 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:48:44,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:48:44,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:48:44,505 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:48:44,505 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 00:48:44,505 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:48:44,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:48:44,505 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 00:48:44,506 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:48:44,506 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_daefbfe7-6a88-492a-ab3d-fd0bab059c05/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daefbfe7-6a88-492a-ab3d-fd0bab059c05/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c27ad91a5bec233234e07a14bfd5505e082df4cd [2021-10-13 00:48:44,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:48:44,756 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:48:44,758 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:48:44,760 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:48:44,761 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:48:44,762 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daefbfe7-6a88-492a-ab3d-fd0bab059c05/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c [2021-10-13 00:48:44,836 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daefbfe7-6a88-492a-ab3d-fd0bab059c05/bin/uautomizer-WNIpwEf4Nt/data/1b47d0e3c/32b0b3aa37cd4b968afd02afa9571ee9/FLAG36ba22c39 [2021-10-13 00:48:45,269 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:48:45,269 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daefbfe7-6a88-492a-ab3d-fd0bab059c05/sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c [2021-10-13 00:48:45,275 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daefbfe7-6a88-492a-ab3d-fd0bab059c05/bin/uautomizer-WNIpwEf4Nt/data/1b47d0e3c/32b0b3aa37cd4b968afd02afa9571ee9/FLAG36ba22c39 [2021-10-13 00:48:45,652 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daefbfe7-6a88-492a-ab3d-fd0bab059c05/bin/uautomizer-WNIpwEf4Nt/data/1b47d0e3c/32b0b3aa37cd4b968afd02afa9571ee9 [2021-10-13 00:48:45,654 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:48:45,656 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:48:45,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:48:45,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:48:45,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:48:45,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:48:45" (1/1) ... [2021-10-13 00:48:45,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dd0327f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:48:45, skipping insertion in model container [2021-10-13 00:48:45,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:48:45" (1/1) ... [2021-10-13 00:48:45,671 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:48:45,682 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:48:45,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:48:45,846 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:48:45,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:48:45,881 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:48:45,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:48:45 WrapperNode [2021-10-13 00:48:45,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:48:45,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:48:45,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:48:45,883 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:48:45,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:48:45" (1/1) ... [2021-10-13 00:48:45,895 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:48:45" (1/1) ... [2021-10-13 00:48:45,911 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:48:45,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:48:45,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:48:45,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:48:45,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:48:45" (1/1) ... [2021-10-13 00:48:45,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:48:45" (1/1) ... [2021-10-13 00:48:45,921 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:48:45" (1/1) ... [2021-10-13 00:48:45,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:48:45" (1/1) ... [2021-10-13 00:48:45,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:48:45" (1/1) ... [2021-10-13 00:48:45,925 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:48:45" (1/1) ... [2021-10-13 00:48:45,935 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:48:45" (1/1) ... [2021-10-13 00:48:45,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:48:45,940 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:48:45,940 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:48:45,940 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:48:45,941 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:48:45" (1/1) ... [2021-10-13 00:48:45,950 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:48:45,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daefbfe7-6a88-492a-ab3d-fd0bab059c05/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:48:45,983 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daefbfe7-6a88-492a-ab3d-fd0bab059c05/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:48:46,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daefbfe7-6a88-492a-ab3d-fd0bab059c05/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:48:46,032 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-10-13 00:48:46,032 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-10-13 00:48:46,032 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-10-13 00:48:46,032 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-10-13 00:48:46,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:48:46,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:48:46,215 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:48:46,216 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-13 00:48:46,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:48:46 BoogieIcfgContainer [2021-10-13 00:48:46,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:48:46,220 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:48:46,220 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:48:46,223 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:48:46,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:48:45" (1/3) ... [2021-10-13 00:48:46,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@120957c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:48:46, skipping insertion in model container [2021-10-13 00:48:46,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:48:45" (2/3) ... [2021-10-13 00:48:46,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@120957c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:48:46, skipping insertion in model container [2021-10-13 00:48:46,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:48:46" (3/3) ... [2021-10-13 00:48:46,226 INFO L111 eAbstractionObserver]: Analyzing ICFG MutualRecursion_1a.c [2021-10-13 00:48:46,231 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:48:46,231 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-13 00:48:46,276 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:48:46,283 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, mConcurrency=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 [2021-10-13 00:48:46,284 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-10-13 00:48:46,330 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) [2021-10-13 00:48:46,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 00:48:46,335 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:48:46,335 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 00:48:46,336 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2021-10-13 00:48:46,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:48:46,341 INFO L82 PathProgramCache]: Analyzing trace with hash 68150020, now seen corresponding path program 1 times [2021-10-13 00:48:46,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:48:46,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122587776] [2021-10-13 00:48:46,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:48:46,351 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:48:46,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:48:46,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:48:46,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:48:46,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122587776] [2021-10-13 00:48:46,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122587776] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:48:46,577 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:48:46,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:48:46,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037724911] [2021-10-13 00:48:46,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:48:46,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:48:46,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:48:46,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:48:46,600 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) [2021-10-13 00:48:46,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:48:46,696 INFO L93 Difference]: Finished difference Result 64 states and 71 transitions. [2021-10-13 00:48:46,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:48:46,697 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 [2021-10-13 00:48:46,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:48:46,706 INFO L225 Difference]: With dead ends: 64 [2021-10-13 00:48:46,707 INFO L226 Difference]: Without dead ends: 56 [2021-10-13 00:48:46,709 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.4ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:48:46,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-13 00:48:46,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2021-10-13 00:48:46,743 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) [2021-10-13 00:48:46,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2021-10-13 00:48:46,747 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 5 [2021-10-13 00:48:46,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:48:46,748 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2021-10-13 00:48:46,748 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) [2021-10-13 00:48:46,748 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2021-10-13 00:48:46,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 00:48:46,749 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:48:46,749 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 00:48:46,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 00:48:46,750 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2021-10-13 00:48:46,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:48:46,751 INFO L82 PathProgramCache]: Analyzing trace with hash 2112650676, now seen corresponding path program 1 times [2021-10-13 00:48:46,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:48:46,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141447364] [2021-10-13 00:48:46,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:48:46,752 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:48:46,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:48:46,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:48:46,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:48:46,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141447364] [2021-10-13 00:48:46,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141447364] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:48:46,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:48:46,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:48:46,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932819522] [2021-10-13 00:48:46,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:48:46,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:48:46,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:48:46,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:48:46,787 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) [2021-10-13 00:48:46,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:48:46,808 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2021-10-13 00:48:46,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:48:46,809 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 [2021-10-13 00:48:46,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:48:46,810 INFO L225 Difference]: With dead ends: 52 [2021-10-13 00:48:46,811 INFO L226 Difference]: Without dead ends: 50 [2021-10-13 00:48:46,812 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:48:46,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-13 00:48:46,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2021-10-13 00:48:46,820 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) [2021-10-13 00:48:46,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2021-10-13 00:48:46,823 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 6 [2021-10-13 00:48:46,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:48:46,823 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2021-10-13 00:48:46,824 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) [2021-10-13 00:48:46,824 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2021-10-13 00:48:46,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 00:48:46,825 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:48:46,825 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:48:46,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 00:48:46,826 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2021-10-13 00:48:46,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:48:46,827 INFO L82 PathProgramCache]: Analyzing trace with hash 803040358, now seen corresponding path program 1 times [2021-10-13 00:48:46,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:48:46,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386027896] [2021-10-13 00:48:46,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:48:46,828 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:48:46,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:48:46,915 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:48:46,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:48:46,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386027896] [2021-10-13 00:48:46,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386027896] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:48:46,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:48:46,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 00:48:46,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180254906] [2021-10-13 00:48:46,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 00:48:46,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:48:46,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 00:48:46,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:48:46,919 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) [2021-10-13 00:48:47,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:48:47,132 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2021-10-13 00:48:47,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:48:47,133 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 [2021-10-13 00:48:47,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:48:47,134 INFO L225 Difference]: With dead ends: 66 [2021-10-13 00:48:47,135 INFO L226 Difference]: Without dead ends: 63 [2021-10-13 00:48:47,135 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 70.6ms TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-10-13 00:48:47,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-13 00:48:47,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2021-10-13 00:48:47,146 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) [2021-10-13 00:48:47,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2021-10-13 00:48:47,148 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 13 [2021-10-13 00:48:47,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:48:47,149 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2021-10-13 00:48:47,149 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) [2021-10-13 00:48:47,149 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2021-10-13 00:48:47,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 00:48:47,150 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:48:47,150 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:48:47,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 00:48:47,151 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2021-10-13 00:48:47,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:48:47,152 INFO L82 PathProgramCache]: Analyzing trace with hash -265858514, now seen corresponding path program 1 times [2021-10-13 00:48:47,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:48:47,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863227137] [2021-10-13 00:48:47,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:48:47,153 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:48:47,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:48:47,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-13 00:48:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:48:47,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 00:48:47,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:48:47,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863227137] [2021-10-13 00:48:47,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863227137] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:48:47,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:48:47,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:48:47,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634716728] [2021-10-13 00:48:47,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:48:47,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:48:47,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:48:47,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:48:47,205 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) [2021-10-13 00:48:47,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:48:47,222 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2021-10-13 00:48:47,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:48:47,223 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 [2021-10-13 00:48:47,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:48:47,227 INFO L225 Difference]: With dead ends: 61 [2021-10-13 00:48:47,227 INFO L226 Difference]: Without dead ends: 60 [2021-10-13 00:48:47,228 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:48:47,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-13 00:48:47,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2021-10-13 00:48:47,247 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) [2021-10-13 00:48:47,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2021-10-13 00:48:47,250 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 17 [2021-10-13 00:48:47,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:48:47,251 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2021-10-13 00:48:47,259 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) [2021-10-13 00:48:47,259 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2021-10-13 00:48:47,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 00:48:47,260 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:48:47,260 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:48:47,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 00:48:47,261 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2021-10-13 00:48:47,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:48:47,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1650762684, now seen corresponding path program 1 times [2021-10-13 00:48:47,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:48:47,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214358541] [2021-10-13 00:48:47,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:48:47,263 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:48:47,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:48:47,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:48:47,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:48:47,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-10-13 00:48:47,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:48:47,372 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-13 00:48:47,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:48:47,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214358541] [2021-10-13 00:48:47,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214358541] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:48:47,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:48:47,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:48:47,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888586605] [2021-10-13 00:48:47,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:48:47,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:48:47,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:48:47,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:48:47,376 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) [2021-10-13 00:48:47,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:48:47,416 INFO L93 Difference]: Finished difference Result 93 states and 122 transitions. [2021-10-13 00:48:47,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:48:47,417 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 [2021-10-13 00:48:47,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:48:47,420 INFO L225 Difference]: With dead ends: 93 [2021-10-13 00:48:47,420 INFO L226 Difference]: Without dead ends: 92 [2021-10-13 00:48:47,421 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.0ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:48:47,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-13 00:48:47,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 78. [2021-10-13 00:48:47,435 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) [2021-10-13 00:48:47,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2021-10-13 00:48:47,438 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 21 [2021-10-13 00:48:47,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:48:47,438 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2021-10-13 00:48:47,439 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) [2021-10-13 00:48:47,439 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2021-10-13 00:48:47,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 00:48:47,440 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:48:47,441 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:48:47,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 00:48:47,441 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2021-10-13 00:48:47,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:48:47,442 INFO L82 PathProgramCache]: Analyzing trace with hash 365964416, now seen corresponding path program 1 times [2021-10-13 00:48:47,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:48:47,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617077694] [2021-10-13 00:48:47,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:48:47,443 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:48:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:48:47,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:48:47,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:48:47,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-10-13 00:48:47,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:48:47,528 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-13 00:48:47,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:48:47,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617077694] [2021-10-13 00:48:47,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617077694] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:48:47,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:48:47,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:48:47,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328031096] [2021-10-13 00:48:47,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:48:47,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:48:47,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:48:47,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:48:47,532 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) [2021-10-13 00:48:47,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:48:47,573 INFO L93 Difference]: Finished difference Result 93 states and 119 transitions. [2021-10-13 00:48:47,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:48:47,573 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 [2021-10-13 00:48:47,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:48:47,575 INFO L225 Difference]: With dead ends: 93 [2021-10-13 00:48:47,575 INFO L226 Difference]: Without dead ends: 89 [2021-10-13 00:48:47,576 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.5ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:48:47,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-10-13 00:48:47,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 78. [2021-10-13 00:48:47,588 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) [2021-10-13 00:48:47,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 99 transitions. [2021-10-13 00:48:47,590 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 99 transitions. Word has length 22 [2021-10-13 00:48:47,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:48:47,591 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 99 transitions. [2021-10-13 00:48:47,591 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) [2021-10-13 00:48:47,591 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 99 transitions. [2021-10-13 00:48:47,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 00:48:47,593 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:48:47,593 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] [2021-10-13 00:48:47,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 00:48:47,594 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2021-10-13 00:48:47,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:48:47,594 INFO L82 PathProgramCache]: Analyzing trace with hash -2082036524, now seen corresponding path program 1 times [2021-10-13 00:48:47,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:48:47,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323721163] [2021-10-13 00:48:47,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:48:47,596 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:48:47,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:48:47,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:48:47,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:48:47,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-10-13 00:48:47,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:48:47,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-10-13 00:48:47,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:48:47,680 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 00:48:47,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:48:47,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323721163] [2021-10-13 00:48:47,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323721163] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:48:47,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080569033] [2021-10-13 00:48:47,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:48:47,683 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:48:47,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daefbfe7-6a88-492a-ab3d-fd0bab059c05/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:48:47,690 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daefbfe7-6a88-492a-ab3d-fd0bab059c05/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:48:47,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daefbfe7-6a88-492a-ab3d-fd0bab059c05/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 00:48:47,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:48:47,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 00:48:47,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:48:47,959 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-13 00:48:47,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080569033] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:48:47,960 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:48:47,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2021-10-13 00:48:47,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236794320] [2021-10-13 00:48:47,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 00:48:47,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:48:47,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 00:48:47,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:48:47,964 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) [2021-10-13 00:48:48,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:48:48,102 INFO L93 Difference]: Finished difference Result 123 states and 156 transitions. [2021-10-13 00:48:48,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:48:48,103 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 [2021-10-13 00:48:48,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:48:48,105 INFO L225 Difference]: With dead ends: 123 [2021-10-13 00:48:48,106 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 00:48:48,111 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 94.6ms TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-10-13 00:48:48,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 00:48:48,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 00:48:48,112 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) [2021-10-13 00:48:48,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 00:48:48,112 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2021-10-13 00:48:48,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:48:48,113 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:48:48,113 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) [2021-10-13 00:48:48,113 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 00:48:48,114 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 00:48:48,116 INFO L764 garLoopResultBuilder]: Registering result SAFE for location fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 00:48:48,117 INFO L764 garLoopResultBuilder]: Registering result SAFE for location fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 00:48:48,117 INFO L764 garLoopResultBuilder]: Registering result SAFE for location fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 00:48:48,117 INFO L764 garLoopResultBuilder]: Registering result SAFE for location fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 00:48:48,118 INFO L764 garLoopResultBuilder]: Registering result SAFE for location gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 00:48:48,118 INFO L764 garLoopResultBuilder]: Registering result SAFE for location gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 00:48:48,118 INFO L764 garLoopResultBuilder]: Registering result SAFE for location gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 00:48:48,118 INFO L764 garLoopResultBuilder]: Registering result SAFE for location gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 00:48:48,119 INFO L764 garLoopResultBuilder]: Registering result SAFE for location gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 00:48:48,119 INFO L764 garLoopResultBuilder]: Registering result SAFE for location gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 00:48:48,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daefbfe7-6a88-492a-ab3d-fd0bab059c05/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:48:48,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daefbfe7-6a88-492a-ab3d-fd0bab059c05/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:48:48,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 00:48:48,338 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,346 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,347 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,357 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,358 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,359 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,360 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,360 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,361 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,362 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,364 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,368 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,368 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,372 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,377 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,378 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,379 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,380 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,380 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,383 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,384 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,384 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,394 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,395 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,396 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,397 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,399 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,399 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,400 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,402 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,414 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,420 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,421 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,422 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,423 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,426 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,427 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,432 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,433 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,434 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,435 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,435 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,437 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,439 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,440 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,440 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,444 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,444 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,445 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,448 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,449 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,452 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:48,573 INFO L857 garLoopResultBuilder]: For program point fFINAL(lines 11 15) no Hoare annotation was computed. [2021-10-13 00:48:48,574 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))) [2021-10-13 00:48:48,574 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-10-13 00:48:48,574 INFO L857 garLoopResultBuilder]: For program point L14-1(line 14) no Hoare annotation was computed. [2021-10-13 00:48:48,574 INFO L857 garLoopResultBuilder]: For program point L14-2(line 14) no Hoare annotation was computed. [2021-10-13 00:48:48,575 INFO L857 garLoopResultBuilder]: For program point L14-3(line 14) no Hoare annotation was computed. [2021-10-13 00:48:48,575 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))) [2021-10-13 00:48:48,575 INFO L857 garLoopResultBuilder]: For program point L14-5(line 14) no Hoare annotation was computed. [2021-10-13 00:48:48,576 INFO L857 garLoopResultBuilder]: For program point fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-10-13 00:48:48,576 INFO L857 garLoopResultBuilder]: For program point fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-10-13 00:48:48,576 INFO L857 garLoopResultBuilder]: For program point L14-6(line 14) no Hoare annotation was computed. [2021-10-13 00:48:48,576 INFO L857 garLoopResultBuilder]: For program point fEXIT(lines 11 15) no Hoare annotation was computed. [2021-10-13 00:48:48,577 INFO L857 garLoopResultBuilder]: For program point L14-7(line 14) no Hoare annotation was computed. [2021-10-13 00:48:48,577 INFO L860 garLoopResultBuilder]: At program point fENTRY(lines 11 15) the Hoare annotation is: true [2021-10-13 00:48:48,577 INFO L857 garLoopResultBuilder]: For program point fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-10-13 00:48:48,577 INFO L857 garLoopResultBuilder]: For program point fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-10-13 00:48:48,578 INFO L857 garLoopResultBuilder]: For program point gFINAL(lines 17 21) no Hoare annotation was computed. [2021-10-13 00:48:48,578 INFO L857 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2021-10-13 00:48:48,578 INFO L857 garLoopResultBuilder]: For program point L19(lines 19 20) no Hoare annotation was computed. [2021-10-13 00:48:48,578 INFO L857 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2021-10-13 00:48:48,578 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))) [2021-10-13 00:48:48,579 INFO L857 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2021-10-13 00:48:48,579 INFO L857 garLoopResultBuilder]: For program point L20-4(line 20) no Hoare annotation was computed. [2021-10-13 00:48:48,579 INFO L857 garLoopResultBuilder]: For program point L20-5(line 20) no Hoare annotation was computed. [2021-10-13 00:48:48,580 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))) [2021-10-13 00:48:48,580 INFO L857 garLoopResultBuilder]: For program point L20-7(line 20) no Hoare annotation was computed. [2021-10-13 00:48:48,580 INFO L857 garLoopResultBuilder]: For program point L20-8(line 20) no Hoare annotation was computed. [2021-10-13 00:48:48,581 INFO L857 garLoopResultBuilder]: For program point L20-9(line 20) no Hoare annotation was computed. [2021-10-13 00:48:48,581 INFO L857 garLoopResultBuilder]: For program point gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-13 00:48:48,581 INFO L857 garLoopResultBuilder]: For program point gEXIT(lines 17 21) no Hoare annotation was computed. [2021-10-13 00:48:48,582 INFO L857 garLoopResultBuilder]: For program point gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-13 00:48:48,583 INFO L860 garLoopResultBuilder]: At program point gENTRY(lines 17 21) the Hoare annotation is: true [2021-10-13 00:48:48,583 INFO L857 garLoopResultBuilder]: For program point gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-13 00:48:48,583 INFO L857 garLoopResultBuilder]: For program point gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-13 00:48:48,583 INFO L857 garLoopResultBuilder]: For program point gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-13 00:48:48,583 INFO L857 garLoopResultBuilder]: For program point gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-13 00:48:48,584 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 00:48:48,584 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 00:48:48,584 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 00:48:48,584 INFO L853 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2021-10-13 00:48:48,584 INFO L857 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2021-10-13 00:48:48,584 INFO L857 garLoopResultBuilder]: For program point L24(lines 24 27) no Hoare annotation was computed. [2021-10-13 00:48:48,593 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:48:48,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:48:48 BoogieIcfgContainer [2021-10-13 00:48:48,597 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:48:48,599 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:48:48,600 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:48:48,600 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:48:48,606 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:48:46" (3/4) ... [2021-10-13 00:48:48,611 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 00:48:48,619 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2021-10-13 00:48:48,619 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure g [2021-10-13 00:48:48,627 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-13 00:48:48,628 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-13 00:48:48,686 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daefbfe7-6a88-492a-ab3d-fd0bab059c05/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:48:48,693 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:48:48,695 INFO L168 Benchmark]: Toolchain (without parser) took 3038.24 ms. Allocated memory was 119.5 MB in the beginning and 146.8 MB in the end (delta: 27.3 MB). Free memory was 83.7 MB in the beginning and 66.1 MB in the end (delta: 17.6 MB). Peak memory consumption was 44.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:48:48,696 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 119.5 MB. Free memory was 91.0 MB in the beginning and 90.9 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:48:48,696 INFO L168 Benchmark]: CACSL2BoogieTranslator took 223.93 ms. Allocated memory is still 119.5 MB. Free memory was 83.7 MB in the beginning and 95.4 MB in the end (delta: -11.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:48:48,697 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.29 ms. Allocated memory is still 119.5 MB. Free memory was 95.4 MB in the beginning and 94.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:48:48,697 INFO L168 Benchmark]: Boogie Preprocessor took 27.04 ms. Allocated memory is still 119.5 MB. Free memory was 94.0 MB in the beginning and 93.3 MB in the end (delta: 674.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:48:48,697 INFO L168 Benchmark]: RCFGBuilder took 278.24 ms. Allocated memory is still 119.5 MB. Free memory was 92.6 MB in the beginning and 83.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:48:48,698 INFO L168 Benchmark]: TraceAbstraction took 2378.07 ms. Allocated memory was 119.5 MB in the beginning and 146.8 MB in the end (delta: 27.3 MB). Free memory was 82.8 MB in the beginning and 69.3 MB in the end (delta: 13.5 MB). Peak memory consumption was 42.9 MB. Max. memory is 16.1 GB. [2021-10-13 00:48:48,698 INFO L168 Benchmark]: Witness Printer took 93.96 ms. Allocated memory is still 146.8 MB. Free memory was 69.3 MB in the beginning and 66.1 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:48:48,703 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 119.5 MB. Free memory was 91.0 MB in the beginning and 90.9 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 223.93 ms. Allocated memory is still 119.5 MB. Free memory was 83.7 MB in the beginning and 95.4 MB in the end (delta: -11.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.29 ms. Allocated memory is still 119.5 MB. Free memory was 95.4 MB in the beginning and 94.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.04 ms. Allocated memory is still 119.5 MB. Free memory was 94.0 MB in the beginning and 93.3 MB in the end (delta: 674.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 278.24 ms. Allocated memory is still 119.5 MB. Free memory was 92.6 MB in the beginning and 83.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2378.07 ms. Allocated memory was 119.5 MB in the beginning and 146.8 MB in the end (delta: 27.3 MB). Free memory was 82.8 MB in the beginning and 69.3 MB in the end (delta: 13.5 MB). Peak memory consumption was 42.9 MB. Max. memory is 16.1 GB. * Witness Printer took 93.96 ms. Allocated memory is still 146.8 MB. Free memory was 69.3 MB in the beginning and 66.1 MB in the end (delta: 3.2 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: 2315.0ms, OverallIterations: 7, TraceHistogramMax: 3, EmptinessCheckTime: 31.2ms, AutomataDifference: 632.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 238.8ms, InitialAbstractionConstructionTime: 26.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 221 SDtfs, 175 SDslu, 550 SDs, 0 SdLazy, 342 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 246.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 233.1ms 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: 103.4ms AutomataMinimizationTime, 7 MinimizatonAttempts, 39 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 7 LocationsWithAnnotation, 55 PreInvPairs, 61 NumberOfFragments, 82 HoareAnnotationTreeSize, 55 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 114.2ms HoareSimplificationTime, 7 FomulaSimplificationsInter, 75 FormulaSimplificationTreeSizeReductionInter, 115.7ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 33.6ms SsaConstructionTime, 99.1ms SatisfiabilityAnalysisTime, 651.8ms 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! [2021-10-13 00:48:48,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daefbfe7-6a88-492a-ab3d-fd0bab059c05/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...