./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/NestedRecursion_2a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ee2bcbba-2abb-4f0b-b495-67c9c3775205/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ee2bcbba-2abb-4f0b-b495-67c9c3775205/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ee2bcbba-2abb-4f0b-b495-67c9c3775205/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ee2bcbba-2abb-4f0b-b495-67c9c3775205/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/termination-crafted/NestedRecursion_2a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ee2bcbba-2abb-4f0b-b495-67c9c3775205/bin/ukojak/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ee2bcbba-2abb-4f0b-b495-67c9c3775205/bin/ukojak --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 Kojak --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a87305f2bf70381ae4b40b8cfb9e2ca1c7e8a065 ......................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 18:29:01,294 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 18:29:01,310 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 18:29:01,412 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 18:29:01,413 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 18:29:01,416 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 18:29:01,418 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 18:29:01,421 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 18:29:01,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 18:29:01,426 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 18:29:01,427 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 18:29:01,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 18:29:01,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 18:29:01,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 18:29:01,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 18:29:01,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 18:29:01,449 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 18:29:01,450 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 18:29:01,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 18:29:01,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 18:29:01,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 18:29:01,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 18:29:01,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 18:29:01,467 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 18:29:01,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 18:29:01,481 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 18:29:01,481 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 18:29:01,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 18:29:01,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 18:29:01,489 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 18:29:01,490 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 18:29:01,491 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 18:29:01,492 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 18:29:01,493 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 18:29:01,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 18:29:01,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 18:29:01,497 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 18:29:01,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 18:29:01,498 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 18:29:01,499 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 18:29:01,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 18:29:01,502 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ee2bcbba-2abb-4f0b-b495-67c9c3775205/bin/ukojak/config/svcomp-Overflow-64bit-Kojak_Default.epf [2020-11-29 18:29:01,542 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 18:29:01,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 18:29:01,543 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-29 18:29:01,544 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-11-29 18:29:01,544 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 18:29:01,545 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 18:29:01,545 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 18:29:01,546 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 18:29:01,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 18:29:01,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 18:29:01,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 18:29:01,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 18:29:01,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 18:29:01,548 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-29 18:29:01,548 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 18:29:01,548 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 18:29:01,549 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 18:29:01,549 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-29 18:29:01,549 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-29 18:29:01,550 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 18:29:01,550 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 18:29:01,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-29 18:29:01,551 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 18:29:01,551 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 18:29:01,552 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 18:29:01,552 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-29 18:29:01,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 18:29:01,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 18:29:01,553 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-vcloud-master/worker/run_dir_ee2bcbba-2abb-4f0b-b495-67c9c3775205/bin/ukojak/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ee2bcbba-2abb-4f0b-b495-67c9c3775205/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a87305f2bf70381ae4b40b8cfb9e2ca1c7e8a065 [2020-11-29 18:29:01,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 18:29:01,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 18:29:01,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 18:29:01,886 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 18:29:01,887 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 18:29:01,890 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ee2bcbba-2abb-4f0b-b495-67c9c3775205/bin/ukojak/../../sv-benchmarks/c/termination-crafted/NestedRecursion_2a.c [2020-11-29 18:29:02,003 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ee2bcbba-2abb-4f0b-b495-67c9c3775205/bin/ukojak/data/1fd20c2e0/3970976ac795468584ebe9a016000cd2/FLAG071ad9d38 [2020-11-29 18:29:02,545 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 18:29:02,546 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ee2bcbba-2abb-4f0b-b495-67c9c3775205/sv-benchmarks/c/termination-crafted/NestedRecursion_2a.c [2020-11-29 18:29:02,562 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ee2bcbba-2abb-4f0b-b495-67c9c3775205/bin/ukojak/data/1fd20c2e0/3970976ac795468584ebe9a016000cd2/FLAG071ad9d38 [2020-11-29 18:29:02,893 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ee2bcbba-2abb-4f0b-b495-67c9c3775205/bin/ukojak/data/1fd20c2e0/3970976ac795468584ebe9a016000cd2 [2020-11-29 18:29:02,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 18:29:02,899 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 18:29:02,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 18:29:02,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 18:29:02,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 18:29:02,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:29:02" (1/1) ... [2020-11-29 18:29:02,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30946557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:29:02, skipping insertion in model container [2020-11-29 18:29:02,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:29:02" (1/1) ... [2020-11-29 18:29:02,919 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 18:29:02,934 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 18:29:03,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:29:03,115 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 18:29:03,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:29:03,166 INFO L208 MainTranslator]: Completed translation [2020-11-29 18:29:03,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:29:03 WrapperNode [2020-11-29 18:29:03,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 18:29:03,169 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 18:29:03,170 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 18:29:03,170 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 18:29:03,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:29:03" (1/1) ... [2020-11-29 18:29:03,186 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:29:03" (1/1) ... [2020-11-29 18:29:03,211 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 18:29:03,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 18:29:03,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 18:29:03,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 18:29:03,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:29:03" (1/1) ... [2020-11-29 18:29:03,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:29:03" (1/1) ... [2020-11-29 18:29:03,228 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:29:03" (1/1) ... [2020-11-29 18:29:03,229 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:29:03" (1/1) ... [2020-11-29 18:29:03,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:29:03" (1/1) ... [2020-11-29 18:29:03,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:29:03" (1/1) ... [2020-11-29 18:29:03,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:29:03" (1/1) ... [2020-11-29 18:29:03,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 18:29:03,240 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 18:29:03,240 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 18:29:03,240 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 18:29:03,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:29:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ee2bcbba-2abb-4f0b-b495-67c9c3775205/bin/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (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:10000 [2020-11-29 18:29:03,343 INFO L130 BoogieDeclarations]: Found specification of procedure g [2020-11-29 18:29:03,344 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2020-11-29 18:29:03,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 18:29:03,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 18:29:03,598 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 18:29:03,598 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-29 18:29:03,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:29:03 BoogieIcfgContainer [2020-11-29 18:29:03,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 18:29:03,602 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-29 18:29:03,606 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-29 18:29:03,627 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-29 18:29:03,627 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:29:03" (1/1) ... [2020-11-29 18:29:03,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:29:03,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 18:29:03,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 16 states and 18 transitions. [2020-11-29 18:29:03,685 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-11-29 18:29:03,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-29 18:29:03,689 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 18:29:03,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:29:04,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:29:04,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 18:29:04,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 19 states and 23 transitions. [2020-11-29 18:29:04,255 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2020-11-29 18:29:04,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 18:29:04,256 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 18:29:04,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:29:04,264 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:29:04,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:29:04,273 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:29:04,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:29:04,306 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:29:04,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:29:04,318 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:29:04,325 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2020-11-29 18:29:04,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 29.11 06:29:04 ImpRootNode [2020-11-29 18:29:04,358 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-29 18:29:04,361 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 18:29:04,361 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 18:29:04,361 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 18:29:04,362 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:29:03" (3/4) ... [2020-11-29 18:29:04,365 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 18:29:04,428 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ee2bcbba-2abb-4f0b-b495-67c9c3775205/bin/ukojak/witness.graphml [2020-11-29 18:29:04,435 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 18:29:04,440 INFO L168 Benchmark]: Toolchain (without parser) took 1537.48 ms. Allocated memory is still 100.7 MB. Free memory was 70.3 MB in the beginning and 45.6 MB in the end (delta: 24.6 MB). Peak memory consumption was 22.3 MB. Max. memory is 16.1 GB. [2020-11-29 18:29:04,441 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 79.7 MB. Free memory is still 39.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:29:04,445 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.60 ms. Allocated memory is still 100.7 MB. Free memory was 70.0 MB in the beginning and 79.4 MB in the end (delta: -9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 18:29:04,461 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.29 ms. Allocated memory is still 100.7 MB. Free memory was 79.4 MB in the beginning and 78.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:29:04,468 INFO L168 Benchmark]: Boogie Preprocessor took 22.97 ms. Allocated memory is still 100.7 MB. Free memory was 78.2 MB in the beginning and 77.3 MB in the end (delta: 850.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:29:04,470 INFO L168 Benchmark]: RCFGBuilder took 361.48 ms. Allocated memory is still 100.7 MB. Free memory was 77.3 MB in the beginning and 67.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 18:29:04,471 INFO L168 Benchmark]: CodeCheck took 756.08 ms. Allocated memory is still 100.7 MB. Free memory was 67.4 MB in the beginning and 46.9 MB in the end (delta: 20.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-29 18:29:04,471 INFO L168 Benchmark]: Witness Printer took 74.44 ms. Allocated memory is still 100.7 MB. Free memory was 46.9 MB in the beginning and 45.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:29:04,478 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 2 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4 SDtfs, 2 SDslu, 0 SDs, 0 SdLazy, 19 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 48 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 15]: integer overflow possible integer overflow possible We found a FailurePath: [L19] int x = __VERIFIER_nondet_int(); [L20] CALL g(x) VAL [\old(x)=-2147483648] [L12] COND FALSE !(x == 0) VAL [\old(x)=-2147483648, x=-2147483648] [L15] x - 1 VAL [\old(x)=-2147483648, x=-2147483648] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 79.7 MB. Free memory is still 39.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 267.60 ms. Allocated memory is still 100.7 MB. Free memory was 70.0 MB in the beginning and 79.4 MB in the end (delta: -9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.29 ms. Allocated memory is still 100.7 MB. Free memory was 79.4 MB in the beginning and 78.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.97 ms. Allocated memory is still 100.7 MB. Free memory was 78.2 MB in the beginning and 77.3 MB in the end (delta: 850.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 361.48 ms. Allocated memory is still 100.7 MB. Free memory was 77.3 MB in the beginning and 67.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * CodeCheck took 756.08 ms. Allocated memory is still 100.7 MB. Free memory was 67.4 MB in the beginning and 46.9 MB in the end (delta: 20.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 74.44 ms. Allocated memory is still 100.7 MB. Free memory was 46.9 MB in the beginning and 45.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...