./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id_i5_o5-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_fd71d39d-0376-4868-9c20-9efcf1b005ea/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_fd71d39d-0376-4868-9c20-9efcf1b005ea/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fd71d39d-0376-4868-9c20-9efcf1b005ea/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fd71d39d-0376-4868-9c20-9efcf1b005ea/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_i5_o5-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_fd71d39d-0376-4868-9c20-9efcf1b005ea/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fd71d39d-0376-4868-9c20-9efcf1b005ea/bin/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2cc8e2531753efe353b2d0bfa802b879fbc4d745 .............................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:34:05,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:34:05,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:34:05,937 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:34:05,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:34:05,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:34:05,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:34:05,956 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:34:05,959 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:34:05,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:34:05,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:34:05,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:34:05,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:34:05,972 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:34:05,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:34:05,975 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:34:05,976 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:34:05,980 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:34:05,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:34:05,989 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:34:05,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:34:05,996 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:34:05,998 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:34:06,000 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:34:06,004 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:34:06,008 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:34:06,009 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:34:06,011 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:34:06,012 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:34:06,013 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:34:06,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:34:06,015 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:34:06,017 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:34:06,018 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:34:06,020 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:34:06,020 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:34:06,021 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:34:06,021 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:34:06,022 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:34:06,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:34:06,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:34:06,024 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fd71d39d-0376-4868-9c20-9efcf1b005ea/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-11-29 19:34:06,049 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:34:06,049 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:34:06,050 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-29 19:34:06,050 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-11-29 19:34:06,051 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:34:06,051 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:34:06,052 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:34:06,052 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:34:06,052 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:34:06,052 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:34:06,052 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:34:06,053 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:34:06,053 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:34:06,053 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:34:06,053 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:34:06,053 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:34:06,054 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:34:06,054 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:34:06,054 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-29 19:34:06,054 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-29 19:34:06,055 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:34:06,055 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:34:06,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-29 19:34:06,055 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:34:06,055 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:34:06,056 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:34:06,056 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-29 19:34:06,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:34:06,056 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:34:06,056 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_fd71d39d-0376-4868-9c20-9efcf1b005ea/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_fd71d39d-0376-4868-9c20-9efcf1b005ea/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2cc8e2531753efe353b2d0bfa802b879fbc4d745 [2020-11-29 19:34:06,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:34:06,327 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:34:06,330 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:34:06,331 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:34:06,333 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:34:06,334 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fd71d39d-0376-4868-9c20-9efcf1b005ea/bin/ukojak/../../sv-benchmarks/c/recursive-simple/id_i5_o5-1.c [2020-11-29 19:34:06,424 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fd71d39d-0376-4868-9c20-9efcf1b005ea/bin/ukojak/data/c91b73ce3/5cf60b816fda4117b0d664adf98008ce/FLAG291ed7cd2 [2020-11-29 19:34:06,881 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:34:06,882 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fd71d39d-0376-4868-9c20-9efcf1b005ea/sv-benchmarks/c/recursive-simple/id_i5_o5-1.c [2020-11-29 19:34:06,892 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fd71d39d-0376-4868-9c20-9efcf1b005ea/bin/ukojak/data/c91b73ce3/5cf60b816fda4117b0d664adf98008ce/FLAG291ed7cd2 [2020-11-29 19:34:07,277 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fd71d39d-0376-4868-9c20-9efcf1b005ea/bin/ukojak/data/c91b73ce3/5cf60b816fda4117b0d664adf98008ce [2020-11-29 19:34:07,280 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:34:07,282 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:34:07,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:34:07,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:34:07,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:34:07,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:34:07" (1/1) ... [2020-11-29 19:34:07,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@127c4dce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:34:07, skipping insertion in model container [2020-11-29 19:34:07,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:34:07" (1/1) ... [2020-11-29 19:34:07,312 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:34:07,330 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:34:07,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:34:07,490 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:34:07,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:34:07,524 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:34:07,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:34:07 WrapperNode [2020-11-29 19:34:07,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:34:07,526 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:34:07,526 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:34:07,526 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:34:07,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:34:07" (1/1) ... [2020-11-29 19:34:07,562 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:34:07" (1/1) ... [2020-11-29 19:34:07,585 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:34:07,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:34:07,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:34:07,588 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:34:07,595 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:34:07" (1/1) ... [2020-11-29 19:34:07,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:34:07" (1/1) ... [2020-11-29 19:34:07,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:34:07" (1/1) ... [2020-11-29 19:34:07,596 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:34:07" (1/1) ... [2020-11-29 19:34:07,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:34:07" (1/1) ... [2020-11-29 19:34:07,601 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:34:07" (1/1) ... [2020-11-29 19:34:07,602 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:34:07" (1/1) ... [2020-11-29 19:34:07,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:34:07,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:34:07,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:34:07,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:34:07,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:34:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fd71d39d-0376-4868-9c20-9efcf1b005ea/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 19:34:07,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:34:07,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:34:07,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:34:07,677 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-11-29 19:34:07,677 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-11-29 19:34:07,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:34:07,900 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:34:07,901 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-29 19:34:07,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:34:07 BoogieIcfgContainer [2020-11-29 19:34:07,904 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:34:07,905 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-29 19:34:07,905 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-29 19:34:07,918 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-29 19:34:07,918 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:34:07" (1/1) ... [2020-11-29 19:34:07,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:34:07,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:34:07,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 14 states and 16 transitions. [2020-11-29 19:34:07,992 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-11-29 19:34:07,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 19:34:07,997 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:34:08,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:34:08,307 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 19:34:08,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:34:08,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 18 states and 21 transitions. [2020-11-29 19:34:08,383 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2020-11-29 19:34:08,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 19:34:08,384 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:34:08,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:34:08,612 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 19:34:09,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:34:09,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 23 states and 31 transitions. [2020-11-29 19:34:09,070 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2020-11-29 19:34:09,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-29 19:34:09,071 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:34:09,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:34:09,172 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-29 19:34:09,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:34:09,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 28 states and 42 transitions. [2020-11-29 19:34:09,601 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 42 transitions. [2020-11-29 19:34:09,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-29 19:34:09,603 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:34:09,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:34:09,711 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-29 19:34:10,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:34:10,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 33 states and 55 transitions. [2020-11-29 19:34:10,310 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 55 transitions. [2020-11-29 19:34:10,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-29 19:34:10,312 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:34:10,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:34:10,458 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-11-29 19:34:11,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:34:11,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 38 states and 70 transitions. [2020-11-29 19:34:11,138 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 70 transitions. [2020-11-29 19:34:11,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-29 19:34:11,140 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:34:11,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:34:11,194 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:34:11,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:34:11,243 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:34:11,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:34:11,307 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:34:11,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:34:11,328 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:34:11,378 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 6 iterations. [2020-11-29 19:34:11,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 29.11 07:34:11 ImpRootNode [2020-11-29 19:34:11,452 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-29 19:34:11,452 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:34:11,452 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:34:11,453 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:34:11,453 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:34:07" (3/4) ... [2020-11-29 19:34:11,455 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 19:34:11,553 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_fd71d39d-0376-4868-9c20-9efcf1b005ea/bin/ukojak/witness.graphml [2020-11-29 19:34:11,554 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:34:11,569 INFO L168 Benchmark]: Toolchain (without parser) took 4273.01 ms. Allocated memory was 107.0 MB in the beginning and 163.6 MB in the end (delta: 56.6 MB). Free memory was 80.7 MB in the beginning and 137.8 MB in the end (delta: -57.1 MB). Peak memory consumption was 75.9 MB. Max. memory is 16.1 GB. [2020-11-29 19:34:11,570 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 107.0 MB. Free memory is still 63.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:34:11,571 INFO L168 Benchmark]: CACSL2BoogieTranslator took 241.50 ms. Allocated memory is still 107.0 MB. Free memory was 80.5 MB in the beginning and 84.2 MB in the end (delta: -3.6 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. [2020-11-29 19:34:11,572 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.42 ms. Allocated memory is still 107.0 MB. Free memory was 84.2 MB in the beginning and 82.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 19:34:11,573 INFO L168 Benchmark]: Boogie Preprocessor took 17.33 ms. Allocated memory is still 107.0 MB. Free memory was 82.6 MB in the beginning and 81.7 MB in the end (delta: 891.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:34:11,574 INFO L168 Benchmark]: RCFGBuilder took 299.54 ms. Allocated memory is still 107.0 MB. Free memory was 81.7 MB in the beginning and 69.6 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 19:34:11,576 INFO L168 Benchmark]: CodeCheck took 3546.82 ms. Allocated memory was 107.0 MB in the beginning and 136.3 MB in the end (delta: 29.4 MB). Free memory was 69.6 MB in the beginning and 36.4 MB in the end (delta: 33.2 MB). Peak memory consumption was 64.8 MB. Max. memory is 16.1 GB. [2020-11-29 19:34:11,577 INFO L168 Benchmark]: Witness Printer took 101.64 ms. Allocated memory was 136.3 MB in the beginning and 163.6 MB in the end (delta: 27.3 MB). Free memory was 36.4 MB in the beginning and 137.8 MB in the end (delta: -101.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:34:11,584 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, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.4s, OverallIterations: 6, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 352 SDtfs, 288 SDslu, 272 SDs, 0 SdLazy, 1650 SolverSat, 346 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1074 GetRequests, 974 SyntacticMatches, 42 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 864 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 5760 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 50/100 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: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int input = 5; [L13] CALL, EXPR id(input) VAL [\old(x)=5] [L7] COND FALSE !(x==0) VAL [\old(x)=5, x=5] [L8] CALL, EXPR id(x-1) VAL [\old(x)=4] [L7] COND FALSE !(x==0) VAL [\old(x)=4, x=4] [L8] CALL, EXPR id(x-1) VAL [\old(x)=3] [L7] COND FALSE !(x==0) VAL [\old(x)=3, x=3] [L8] CALL, EXPR id(x-1) VAL [\old(x)=2] [L7] COND FALSE !(x==0) VAL [\old(x)=2, x=2] [L8] CALL, EXPR id(x-1) VAL [\old(x)=1] [L7] COND FALSE !(x==0) VAL [\old(x)=1, x=1] [L8] CALL, EXPR id(x-1) VAL [\old(x)=0] [L7] COND TRUE x==0 [L7] return 0; VAL [\old(x)=0, \result=0, x=0] [L8] RET, EXPR id(x-1) VAL [\old(x)=1, id(x-1)=0, x=1] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=2, id(x-1)=1, x=2] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=3, id(x-1)=2, x=3] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=4, id(x-1)=3, x=4] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=5, id(x-1)=4, x=5] [L8] return id(x-1) + 1; [L13] RET, EXPR id(input) [L13] int result = id(input); [L14] COND TRUE result == 5 [L4] __assert_fail("0", "id_i5_o5-1.c", 4, "reach_error") * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 107.0 MB. Free memory is still 63.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 241.50 ms. Allocated memory is still 107.0 MB. Free memory was 80.5 MB in the beginning and 84.2 MB in the end (delta: -3.6 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 59.42 ms. Allocated memory is still 107.0 MB. Free memory was 84.2 MB in the beginning and 82.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.33 ms. Allocated memory is still 107.0 MB. Free memory was 82.6 MB in the beginning and 81.7 MB in the end (delta: 891.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 299.54 ms. Allocated memory is still 107.0 MB. Free memory was 81.7 MB in the beginning and 69.6 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * CodeCheck took 3546.82 ms. Allocated memory was 107.0 MB in the beginning and 136.3 MB in the end (delta: 29.4 MB). Free memory was 69.6 MB in the beginning and 36.4 MB in the end (delta: 33.2 MB). Peak memory consumption was 64.8 MB. Max. memory is 16.1 GB. * Witness Printer took 101.64 ms. Allocated memory was 136.3 MB in the beginning and 163.6 MB in the end (delta: 27.3 MB). Free memory was 36.4 MB in the beginning and 137.8 MB in the end (delta: -101.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...