./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/id_b3_o2-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf27afdd-38f0-4405-993d-0df19f0d5e42/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf27afdd-38f0-4405-993d-0df19f0d5e42/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf27afdd-38f0-4405-993d-0df19f0d5e42/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf27afdd-38f0-4405-993d-0df19f0d5e42/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_b3_o2-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf27afdd-38f0-4405-993d-0df19f0d5e42/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf27afdd-38f0-4405-993d-0df19f0d5e42/bin/uautomizer-Z5i5R5N3CC --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 32bit --witnessprinter.graph.data.programhash f919edf50b278085ea884360d609205059ef996b ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:27:55,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:27:55,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:27:55,379 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:27:55,381 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:27:55,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:27:55,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:27:55,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:27:55,395 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:27:55,401 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:27:55,403 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:27:55,404 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:27:55,405 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:27:55,408 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:27:55,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:27:55,412 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:27:55,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:27:55,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:27:55,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:27:55,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:27:55,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:27:55,432 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:27:55,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:27:55,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:27:55,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:27:55,446 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:27:55,446 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:27:55,448 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:27:55,449 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:27:55,451 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:27:55,451 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:27:55,452 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:27:55,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:27:55,456 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:27:55,458 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:27:55,458 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:27:55,459 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:27:55,459 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:27:55,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:27:55,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:27:55,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:27:55,463 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf27afdd-38f0-4405-993d-0df19f0d5e42/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-11 00:27:55,507 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:27:55,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:27:55,511 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:27:55,512 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:27:55,512 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:27:55,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:27:55,513 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:27:55,513 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 00:27:55,513 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:27:55,520 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:27:55,521 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:27:55,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:27:55,522 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:27:55,522 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:27:55,523 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-11 00:27:55,523 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:27:55,523 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:27:55,523 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:27:55,524 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:27:55,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:27:55,524 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:27:55,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:27:55,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:27:55,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:27:55,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:27:55,526 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:27:55,526 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:27:55,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:27:55,527 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:27:55,527 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:27:55,527 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_cf27afdd-38f0-4405-993d-0df19f0d5e42/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf27afdd-38f0-4405-993d-0df19f0d5e42/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f919edf50b278085ea884360d609205059ef996b [2021-10-11 00:27:55,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:27:55,859 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:27:55,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:27:55,866 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:27:55,868 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:27:55,869 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf27afdd-38f0-4405-993d-0df19f0d5e42/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/recursive-simple/id_b3_o2-2.c [2021-10-11 00:27:55,963 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf27afdd-38f0-4405-993d-0df19f0d5e42/bin/uautomizer-Z5i5R5N3CC/data/77faf0265/9d1bdde54d1243499a041fffea5f7baf/FLAG08217a029 [2021-10-11 00:27:56,439 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:27:56,439 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf27afdd-38f0-4405-993d-0df19f0d5e42/sv-benchmarks/c/recursive-simple/id_b3_o2-2.c [2021-10-11 00:27:56,445 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf27afdd-38f0-4405-993d-0df19f0d5e42/bin/uautomizer-Z5i5R5N3CC/data/77faf0265/9d1bdde54d1243499a041fffea5f7baf/FLAG08217a029 [2021-10-11 00:27:56,824 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf27afdd-38f0-4405-993d-0df19f0d5e42/bin/uautomizer-Z5i5R5N3CC/data/77faf0265/9d1bdde54d1243499a041fffea5f7baf [2021-10-11 00:27:56,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:27:56,829 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:27:56,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:27:56,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:27:56,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:27:56,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:27:56" (1/1) ... [2021-10-11 00:27:56,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bf6aa1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:56, skipping insertion in model container [2021-10-11 00:27:56,838 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:27:56" (1/1) ... [2021-10-11 00:27:56,845 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:27:56,857 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:27:57,025 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf27afdd-38f0-4405-993d-0df19f0d5e42/sv-benchmarks/c/recursive-simple/id_b3_o2-2.c[528,541] [2021-10-11 00:27:57,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:27:57,053 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:27:57,082 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf27afdd-38f0-4405-993d-0df19f0d5e42/sv-benchmarks/c/recursive-simple/id_b3_o2-2.c[528,541] [2021-10-11 00:27:57,083 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:27:57,102 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:27:57,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:57 WrapperNode [2021-10-11 00:27:57,105 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:27:57,110 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:27:57,110 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:27:57,111 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:27:57,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:57" (1/1) ... [2021-10-11 00:27:57,127 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:57" (1/1) ... [2021-10-11 00:27:57,146 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:27:57,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:27:57,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:27:57,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:27:57,158 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:57" (1/1) ... [2021-10-11 00:27:57,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:57" (1/1) ... [2021-10-11 00:27:57,159 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:57" (1/1) ... [2021-10-11 00:27:57,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:57" (1/1) ... [2021-10-11 00:27:57,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:57" (1/1) ... [2021-10-11 00:27:57,164 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:57" (1/1) ... [2021-10-11 00:27:57,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:57" (1/1) ... [2021-10-11 00:27:57,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:27:57,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:27:57,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:27:57,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:27:57,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:57" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf27afdd-38f0-4405-993d-0df19f0d5e42/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:27:57,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:27:57,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:27:57,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:27:57,256 INFO L130 BoogieDeclarations]: Found specification of procedure id [2021-10-11 00:27:57,256 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2021-10-11 00:27:57,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:27:57,456 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:27:57,457 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-11 00:27:57,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:27:57 BoogieIcfgContainer [2021-10-11 00:27:57,458 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:27:57,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:27:57,460 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:27:57,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:27:57,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:27:56" (1/3) ... [2021-10-11 00:27:57,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6967d68c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:27:57, skipping insertion in model container [2021-10-11 00:27:57,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:57" (2/3) ... [2021-10-11 00:27:57,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6967d68c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:27:57, skipping insertion in model container [2021-10-11 00:27:57,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:27:57" (3/3) ... [2021-10-11 00:27:57,488 INFO L111 eAbstractionObserver]: Analyzing ICFG id_b3_o2-2.c [2021-10-11 00:27:57,517 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:27:57,520 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-10-11 00:27:57,533 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-11 00:27:57,562 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:27:57,571 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:27:57,571 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:27:57,571 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:27:57,580 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:27:57,580 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:27:57,581 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:27:57,581 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:27:57,596 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2021-10-11 00:27:57,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 00:27:57,601 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:57,602 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:27:57,602 INFO L429 AbstractCegarLoop]: === Iteration 1 === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:27:57,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:57,608 INFO L82 PathProgramCache]: Analyzing trace with hash -12839543, now seen corresponding path program 1 times [2021-10-11 00:27:57,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:57,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820115999] [2021-10-11 00:27:57,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:57,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:57,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-11 00:27:57,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:57,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 00:27:57,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820115999] [2021-10-11 00:27:57,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:57,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:27:57,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14872983] [2021-10-11 00:27:57,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:27:57,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:27:57,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:27:57,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:27:57,883 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 4 states. [2021-10-11 00:27:57,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:57,942 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2021-10-11 00:27:57,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:27:57,944 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2021-10-11 00:27:57,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:57,951 INFO L225 Difference]: With dead ends: 30 [2021-10-11 00:27:57,951 INFO L226 Difference]: Without dead ends: 19 [2021-10-11 00:27:57,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:27:57,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-11 00:27:57,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-11 00:27:57,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-10-11 00:27:57,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-10-11 00:27:57,987 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2021-10-11 00:27:57,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:57,988 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-10-11 00:27:57,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:27:57,988 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-10-11 00:27:57,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 00:27:57,989 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:57,989 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:27:57,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:27:57,990 INFO L429 AbstractCegarLoop]: === Iteration 2 === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:27:57,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:57,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1211021997, now seen corresponding path program 1 times [2021-10-11 00:27:57,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:57,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433795794] [2021-10-11 00:27:57,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:58,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:58,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-11 00:27:58,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:58,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-11 00:27:58,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:58,115 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-11 00:27:58,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433795794] [2021-10-11 00:27:58,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:58,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 00:27:58,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741956123] [2021-10-11 00:27:58,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:27:58,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:27:58,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:27:58,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:27:58,119 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 5 states. [2021-10-11 00:27:58,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:58,150 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2021-10-11 00:27:58,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:27:58,151 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2021-10-11 00:27:58,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:58,153 INFO L225 Difference]: With dead ends: 30 [2021-10-11 00:27:58,154 INFO L226 Difference]: Without dead ends: 22 [2021-10-11 00:27:58,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:27:58,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-11 00:27:58,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2021-10-11 00:27:58,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-10-11 00:27:58,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-10-11 00:27:58,160 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 21 [2021-10-11 00:27:58,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:58,161 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-10-11 00:27:58,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:27:58,161 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-10-11 00:27:58,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 00:27:58,162 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:58,162 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:27:58,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:27:58,163 INFO L429 AbstractCegarLoop]: === Iteration 3 === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:27:58,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:58,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1211945518, now seen corresponding path program 1 times [2021-10-11 00:27:58,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:58,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614925257] [2021-10-11 00:27:58,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:58,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:58,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-11 00:27:58,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:58,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-11 00:27:58,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:58,360 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-11 00:27:58,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614925257] [2021-10-11 00:27:58,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123537823] [2021-10-11 00:27:58,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf27afdd-38f0-4405-993d-0df19f0d5e42/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:27:58,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:58,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 00:27:58,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:27:58,610 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-11 00:27:58,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:27:58,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-10-11 00:27:58,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142912575] [2021-10-11 00:27:58,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 00:27:58,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:27:58,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 00:27:58,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:27:58,615 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 8 states. [2021-10-11 00:27:58,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:58,681 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-10-11 00:27:58,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 00:27:58,683 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2021-10-11 00:27:58,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:58,684 INFO L225 Difference]: With dead ends: 26 [2021-10-11 00:27:58,684 INFO L226 Difference]: Without dead ends: 25 [2021-10-11 00:27:58,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-11 00:27:58,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-11 00:27:58,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2021-10-11 00:27:58,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-10-11 00:27:58,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2021-10-11 00:27:58,691 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 21 [2021-10-11 00:27:58,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:58,691 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2021-10-11 00:27:58,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 00:27:58,691 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2021-10-11 00:27:58,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-11 00:27:58,692 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:58,692 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:27:58,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-11 00:27:58,913 INFO L429 AbstractCegarLoop]: === Iteration 4 === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:27:58,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:58,914 INFO L82 PathProgramCache]: Analyzing trace with hash -229915676, now seen corresponding path program 1 times [2021-10-11 00:27:58,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:58,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160868063] [2021-10-11 00:27:58,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:58,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:58,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-11 00:27:58,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:59,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-11 00:27:59,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:59,017 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-11 00:27:59,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160868063] [2021-10-11 00:27:59,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:59,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:27:59,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350811365] [2021-10-11 00:27:59,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:27:59,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:27:59,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:27:59,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:27:59,020 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 3 states. [2021-10-11 00:27:59,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:59,031 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2021-10-11 00:27:59,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:27:59,032 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2021-10-11 00:27:59,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:59,033 INFO L225 Difference]: With dead ends: 24 [2021-10-11 00:27:59,033 INFO L226 Difference]: Without dead ends: 23 [2021-10-11 00:27:59,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:27:59,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-11 00:27:59,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-11 00:27:59,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-10-11 00:27:59,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-10-11 00:27:59,038 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 25 [2021-10-11 00:27:59,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:59,038 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-10-11 00:27:59,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:27:59,039 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-10-11 00:27:59,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-11 00:27:59,040 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:59,040 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:27:59,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 00:27:59,040 INFO L429 AbstractCegarLoop]: === Iteration 5 === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:27:59,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:59,041 INFO L82 PathProgramCache]: Analyzing trace with hash 234134204, now seen corresponding path program 1 times [2021-10-11 00:27:59,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:59,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347853460] [2021-10-11 00:27:59,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:59,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:59,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-11 00:27:59,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:59,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-11 00:27:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:59,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-11 00:27:59,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:59,114 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-11 00:27:59,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347853460] [2021-10-11 00:27:59,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:59,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:27:59,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063314264] [2021-10-11 00:27:59,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:27:59,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:27:59,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:27:59,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:27:59,117 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 4 states. [2021-10-11 00:27:59,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:59,127 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2021-10-11 00:27:59,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:27:59,128 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2021-10-11 00:27:59,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:59,128 INFO L225 Difference]: With dead ends: 23 [2021-10-11 00:27:59,128 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 00:27:59,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:27:59,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 00:27:59,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 00:27:59,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 00:27:59,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 00:27:59,130 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2021-10-11 00:27:59,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:59,130 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:27:59,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:27:59,131 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 00:27:59,131 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 00:27:59,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 00:27:59,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 00:27:59,149 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 00:27:59,149 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-11 00:27:59,149 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 00:27:59,149 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-11 00:27:59,149 INFO L262 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2021-10-11 00:27:59,150 INFO L262 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2021-10-11 00:27:59,150 INFO L265 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: true [2021-10-11 00:27:59,150 INFO L262 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-10-11 00:27:59,150 INFO L262 CegarLoopResult]: For program point L13(lines 13 19) no Hoare annotation was computed. [2021-10-11 00:27:59,150 INFO L262 CegarLoopResult]: For program point idFINAL(lines 6 11) no Hoare annotation was computed. [2021-10-11 00:27:59,150 INFO L262 CegarLoopResult]: For program point idEXIT(lines 6 11) no Hoare annotation was computed. [2021-10-11 00:27:59,150 INFO L265 CegarLoopResult]: At program point idENTRY(lines 6 11) the Hoare annotation is: true [2021-10-11 00:27:59,151 INFO L262 CegarLoopResult]: For program point idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 8) no Hoare annotation was computed. [2021-10-11 00:27:59,152 INFO L262 CegarLoopResult]: For program point idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 8) no Hoare annotation was computed. [2021-10-11 00:27:59,152 INFO L262 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2021-10-11 00:27:59,152 INFO L265 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: true [2021-10-11 00:27:59,152 INFO L262 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2021-10-11 00:27:59,152 INFO L262 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2021-10-11 00:27:59,152 INFO L262 CegarLoopResult]: For program point L8-2(line 8) no Hoare annotation was computed. [2021-10-11 00:27:59,152 INFO L262 CegarLoopResult]: For program point L8-3(line 8) no Hoare annotation was computed. [2021-10-11 00:27:59,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:27:59 BoogieIcfgContainer [2021-10-11 00:27:59,157 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:27:59,158 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:27:59,158 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:27:59,158 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:27:59,159 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:27:57" (3/4) ... [2021-10-11 00:27:59,167 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 00:27:59,173 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2021-10-11 00:27:59,181 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-11 00:27:59,182 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 00:27:59,182 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 00:27:59,182 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 00:27:59,235 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf27afdd-38f0-4405-993d-0df19f0d5e42/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:27:59,236 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:27:59,237 INFO L168 Benchmark]: Toolchain (without parser) took 2407.66 ms. Allocated memory is still 134.2 MB. Free memory was 98.9 MB in the beginning and 73.1 MB in the end (delta: 25.7 MB). Peak memory consumption was 24.9 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:59,238 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 134.2 MB. Free memory was 105.9 MB in the beginning and 105.9 MB in the end (delta: 30.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:27:59,238 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.85 ms. Allocated memory is still 134.2 MB. Free memory was 98.6 MB in the beginning and 109.8 MB in the end (delta: -11.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:59,239 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.65 ms. Allocated memory is still 134.2 MB. Free memory was 109.8 MB in the beginning and 108.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:59,239 INFO L168 Benchmark]: Boogie Preprocessor took 19.85 ms. Allocated memory is still 134.2 MB. Free memory was 108.4 MB in the beginning and 107.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:27:59,240 INFO L168 Benchmark]: RCFGBuilder took 290.79 ms. Allocated memory is still 134.2 MB. Free memory was 107.0 MB in the beginning and 94.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:59,246 INFO L168 Benchmark]: TraceAbstraction took 1697.32 ms. Allocated memory is still 134.2 MB. Free memory was 94.4 MB in the beginning and 76.1 MB in the end (delta: 18.2 MB). Peak memory consumption was 21.5 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:59,246 INFO L168 Benchmark]: Witness Printer took 77.97 ms. Allocated memory is still 134.2 MB. Free memory was 76.1 MB in the beginning and 73.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:59,251 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 134.2 MB. Free memory was 105.9 MB in the beginning and 105.9 MB in the end (delta: 30.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 274.85 ms. Allocated memory is still 134.2 MB. Free memory was 98.6 MB in the beginning and 109.8 MB in the end (delta: -11.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.65 ms. Allocated memory is still 134.2 MB. Free memory was 109.8 MB in the beginning and 108.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.85 ms. Allocated memory is still 134.2 MB. Free memory was 108.4 MB in the beginning and 107.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 290.79 ms. Allocated memory is still 134.2 MB. Free memory was 107.0 MB in the beginning and 94.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1697.32 ms. Allocated memory is still 134.2 MB. Free memory was 94.4 MB in the beginning and 76.1 MB in the end (delta: 18.2 MB). Peak memory consumption was 21.5 MB. Max. memory is 16.1 GB. * Witness Printer took 77.97 ms. Allocated memory is still 134.2 MB. Free memory was 76.1 MB in the beginning and 73.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 8]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.5s, OverallIterations: 5, TraceHistogramMax: 4, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 69 SDtfs, 10 SDslu, 129 SDs, 0 SdLazy, 70 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 3 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 124 ConstructedInterpolants, 0 QuantifiedInterpolants, 4290 SizeOfPredicates, 1 NumberOfNonLiveVariables, 77 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 76/84 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...