./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/sum_20x0-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_63b08a65-4779-4654-978e-96417c296642/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_63b08a65-4779-4654-978e-96417c296642/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_63b08a65-4779-4654-978e-96417c296642/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_63b08a65-4779-4654-978e-96417c296642/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/sum_20x0-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_63b08a65-4779-4654-978e-96417c296642/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_63b08a65-4779-4654-978e-96417c296642/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 d709c141e865b9e316ae50970f4a7a44b0dfd8eb ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.2.0-69874e2 [2020-12-01 18:18:46,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 18:18:46,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 18:18:46,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 18:18:46,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 18:18:46,407 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 18:18:46,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 18:18:46,413 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 18:18:46,419 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 18:18:46,426 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 18:18:46,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 18:18:46,431 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 18:18:46,438 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 18:18:46,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 18:18:46,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 18:18:46,451 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 18:18:46,452 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 18:18:46,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 18:18:46,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 18:18:46,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 18:18:46,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 18:18:46,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 18:18:46,467 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 18:18:46,469 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 18:18:46,473 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 18:18:46,473 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 18:18:46,474 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 18:18:46,476 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 18:18:46,476 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 18:18:46,478 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 18:18:46,479 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 18:18:46,480 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 18:18:46,481 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 18:18:46,482 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 18:18:46,484 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 18:18:46,484 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 18:18:46,485 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 18:18:46,486 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 18:18:46,487 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 18:18:46,488 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 18:18:46,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 18:18:46,491 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_63b08a65-4779-4654-978e-96417c296642/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-12-01 18:18:46,535 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 18:18:46,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 18:18:46,539 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-01 18:18:46,540 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-12-01 18:18:46,541 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 18:18:46,541 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 18:18:46,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 18:18:46,542 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 18:18:46,542 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 18:18:46,542 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 18:18:46,544 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 18:18:46,544 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 18:18:46,545 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 18:18:46,545 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 18:18:46,545 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 18:18:46,545 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 18:18:46,546 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 18:18:46,546 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 18:18:46,546 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-12-01 18:18:46,547 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-12-01 18:18:46,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 18:18:46,547 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 18:18:46,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-01 18:18:46,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 18:18:46,548 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 18:18:46,548 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 18:18:46,549 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-12-01 18:18:46,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 18:18:46,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 18:18:46,552 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_63b08a65-4779-4654-978e-96417c296642/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_63b08a65-4779-4654-978e-96417c296642/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d709c141e865b9e316ae50970f4a7a44b0dfd8eb [2020-12-01 18:18:46,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 18:18:46,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 18:18:46,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 18:18:46,983 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 18:18:46,984 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 18:18:46,985 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_63b08a65-4779-4654-978e-96417c296642/bin/ukojak/../../sv-benchmarks/c/recursive-simple/sum_20x0-1.c [2020-12-01 18:18:47,096 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_63b08a65-4779-4654-978e-96417c296642/bin/ukojak/data/841120447/62e255a319d1428a85b46bba456e495a/FLAG9348f0bab [2020-12-01 18:18:47,763 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 18:18:47,763 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_63b08a65-4779-4654-978e-96417c296642/sv-benchmarks/c/recursive-simple/sum_20x0-1.c [2020-12-01 18:18:47,771 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_63b08a65-4779-4654-978e-96417c296642/bin/ukojak/data/841120447/62e255a319d1428a85b46bba456e495a/FLAG9348f0bab [2020-12-01 18:18:48,126 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_63b08a65-4779-4654-978e-96417c296642/bin/ukojak/data/841120447/62e255a319d1428a85b46bba456e495a [2020-12-01 18:18:48,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 18:18:48,132 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 18:18:48,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 18:18:48,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 18:18:48,139 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 18:18:48,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 06:18:48" (1/1) ... [2020-12-01 18:18:48,144 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3879825f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:18:48, skipping insertion in model container [2020-12-01 18:18:48,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 06:18:48" (1/1) ... [2020-12-01 18:18:48,156 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 18:18:48,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 18:18:48,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 18:18:48,392 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 18:18:48,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 18:18:48,433 INFO L208 MainTranslator]: Completed translation [2020-12-01 18:18:48,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:18:48 WrapperNode [2020-12-01 18:18:48,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 18:18:48,436 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 18:18:48,436 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 18:18:48,437 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 18:18:48,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:18:48" (1/1) ... [2020-12-01 18:18:48,457 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:18:48" (1/1) ... [2020-12-01 18:18:48,480 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 18:18:48,481 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 18:18:48,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 18:18:48,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 18:18:48,494 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:18:48" (1/1) ... [2020-12-01 18:18:48,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:18:48" (1/1) ... [2020-12-01 18:18:48,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:18:48" (1/1) ... [2020-12-01 18:18:48,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:18:48" (1/1) ... [2020-12-01 18:18:48,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:18:48" (1/1) ... [2020-12-01 18:18:48,503 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:18:48" (1/1) ... [2020-12-01 18:18:48,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:18:48" (1/1) ... [2020-12-01 18:18:48,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 18:18:48,509 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 18:18:48,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 18:18:48,509 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 18:18:48,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:18:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63b08a65-4779-4654-978e-96417c296642/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 [2020-12-01 18:18:48,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 18:18:48,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 18:18:48,612 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-12-01 18:18:48,614 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-12-01 18:18:48,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 18:18:48,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 18:18:48,870 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 18:18:48,871 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-12-01 18:18:48,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:18:48 BoogieIcfgContainer [2020-12-01 18:18:48,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 18:18:48,875 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-12-01 18:18:48,875 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-12-01 18:18:48,897 INFO L275 PluginConnector]: CodeCheck initialized [2020-12-01 18:18:48,898 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:18:48" (1/1) ... [2020-12-01 18:18:48,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 18:18:48,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:18:48,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 14 states and 16 transitions. [2020-12-01 18:18:48,963 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-12-01 18:18:48,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-01 18:18:48,969 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:18:49,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:18:49,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 18:18:49,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:18:49,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 16 states and 18 transitions. [2020-12-01 18:18:49,379 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-12-01 18:18:49,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 18:18:49,381 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:18:49,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:18:49,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-01 18:18:49,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:18:49,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 19 states and 23 transitions. [2020-12-01 18:18:49,720 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2020-12-01 18:18:49,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-01 18:18:49,722 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:18:49,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:18:49,905 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-01 18:18:50,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:18:50,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 22 states and 29 transitions. [2020-12-01 18:18:50,142 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2020-12-01 18:18:50,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-01 18:18:50,143 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:18:50,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:18:50,249 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-01 18:18:50,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:18:50,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 25 states and 36 transitions. [2020-12-01 18:18:50,418 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 36 transitions. [2020-12-01 18:18:50,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-01 18:18:50,420 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:18:50,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:18:50,626 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-12-01 18:18:50,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:18:50,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 28 states and 44 transitions. [2020-12-01 18:18:50,783 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 44 transitions. [2020-12-01 18:18:50,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-01 18:18:50,789 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:18:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:18:50,929 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-12-01 18:18:51,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:18:51,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 31 states and 53 transitions. [2020-12-01 18:18:51,078 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 53 transitions. [2020-12-01 18:18:51,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-01 18:18:51,080 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:18:51,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:18:51,200 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-12-01 18:18:51,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:18:51,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 34 states and 63 transitions. [2020-12-01 18:18:51,408 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 63 transitions. [2020-12-01 18:18:51,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-01 18:18:51,421 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:18:51,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:18:51,592 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-12-01 18:18:51,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:18:51,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 37 states and 74 transitions. [2020-12-01 18:18:51,809 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 74 transitions. [2020-12-01 18:18:51,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-01 18:18:51,814 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:18:51,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:18:51,931 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-12-01 18:18:52,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:18:52,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 40 states and 86 transitions. [2020-12-01 18:18:52,142 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 86 transitions. [2020-12-01 18:18:52,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-01 18:18:52,147 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:18:52,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:18:52,250 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-12-01 18:18:52,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:18:52,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 43 states and 99 transitions. [2020-12-01 18:18:52,496 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 99 transitions. [2020-12-01 18:18:52,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-01 18:18:52,500 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:18:52,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:18:52,608 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-12-01 18:18:52,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:18:52,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 46 states and 113 transitions. [2020-12-01 18:18:52,872 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 113 transitions. [2020-12-01 18:18:52,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-01 18:18:52,873 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:18:52,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:18:53,065 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-12-01 18:18:53,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:18:53,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 49 states and 128 transitions. [2020-12-01 18:18:53,336 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 128 transitions. [2020-12-01 18:18:53,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-01 18:18:53,341 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:18:53,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:18:53,530 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-12-01 18:18:53,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:18:53,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 52 states and 144 transitions. [2020-12-01 18:18:53,804 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 144 transitions. [2020-12-01 18:18:53,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-01 18:18:53,812 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:18:53,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:18:54,016 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-12-01 18:18:54,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:18:54,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 55 states and 161 transitions. [2020-12-01 18:18:54,343 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 161 transitions. [2020-12-01 18:18:54,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-01 18:18:54,345 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:18:54,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:18:54,536 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-12-01 18:18:54,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:18:54,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 58 states and 179 transitions. [2020-12-01 18:18:54,880 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 179 transitions. [2020-12-01 18:18:54,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-01 18:18:54,881 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:18:54,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:18:55,031 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2020-12-01 18:18:55,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:18:55,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 61 states and 198 transitions. [2020-12-01 18:18:55,354 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 198 transitions. [2020-12-01 18:18:55,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-01 18:18:55,359 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:18:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:18:55,517 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-12-01 18:18:55,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:18:55,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 64 states and 218 transitions. [2020-12-01 18:18:55,839 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 218 transitions. [2020-12-01 18:18:55,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-01 18:18:55,842 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:18:55,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:18:55,979 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2020-12-01 18:18:56,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:18:56,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 67 states and 239 transitions. [2020-12-01 18:18:56,328 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 239 transitions. [2020-12-01 18:18:56,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-12-01 18:18:56,331 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:18:56,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:18:56,484 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2020-12-01 18:18:56,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:18:56,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 70 states and 261 transitions. [2020-12-01 18:18:56,834 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 261 transitions. [2020-12-01 18:18:56,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-12-01 18:18:56,836 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:18:56,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:18:57,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2020-12-01 18:18:57,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:18:57,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 73 states and 284 transitions. [2020-12-01 18:18:57,368 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 284 transitions. [2020-12-01 18:18:57,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-12-01 18:18:57,370 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:18:57,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 18:18:57,489 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 18:18:57,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 18:18:57,556 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 18:18:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 18:18:57,761 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 18:18:57,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 18:18:57,818 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 18:18:59,041 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 21 iterations. [2020-12-01 18:18:59,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 06:18:59 ImpRootNode [2020-12-01 18:18:59,189 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-12-01 18:18:59,190 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 18:18:59,190 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 18:18:59,190 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 18:18:59,192 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:18:48" (3/4) ... [2020-12-01 18:18:59,195 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 18:18:59,341 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_63b08a65-4779-4654-978e-96417c296642/bin/ukojak/witness.graphml [2020-12-01 18:18:59,342 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 18:18:59,349 INFO L168 Benchmark]: Toolchain (without parser) took 11215.41 ms. Allocated memory was 113.2 MB in the beginning and 163.6 MB in the end (delta: 50.3 MB). Free memory was 84.2 MB in the beginning and 108.6 MB in the end (delta: -24.4 MB). Peak memory consumption was 25.0 MB. Max. memory is 16.1 GB. [2020-12-01 18:18:59,349 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 77.6 MB. Free memory was 37.4 MB in the beginning and 37.3 MB in the end (delta: 71.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 18:18:59,350 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.13 ms. Allocated memory is still 113.2 MB. Free memory was 83.8 MB in the beginning and 89.9 MB in the end (delta: -6.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 18:18:59,351 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.21 ms. Allocated memory is still 113.2 MB. Free memory was 89.9 MB in the beginning and 88.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 18:18:59,352 INFO L168 Benchmark]: Boogie Preprocessor took 26.28 ms. Allocated memory is still 113.2 MB. Free memory was 88.7 MB in the beginning and 87.8 MB in the end (delta: 913.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 18:18:59,352 INFO L168 Benchmark]: RCFGBuilder took 365.40 ms. Allocated memory is still 113.2 MB. Free memory was 87.8 MB in the beginning and 74.8 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-01 18:18:59,353 INFO L168 Benchmark]: CodeCheck took 10313.71 ms. Allocated memory was 113.2 MB in the beginning and 163.6 MB in the end (delta: 50.3 MB). Free memory was 74.8 MB in the beginning and 114.9 MB in the end (delta: -40.1 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. [2020-12-01 18:18:59,354 INFO L168 Benchmark]: Witness Printer took 156.23 ms. Allocated memory is still 163.6 MB. Free memory was 114.9 MB in the beginning and 108.6 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-01 18:18:59,358 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: 10.1s, OverallIterations: 21, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7340032 SDtfs, 6815736 SDslu, 11010032 SDs, 0 SdLazy, 31981374 SolverSat, 5767162 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20678 GetRequests, 19628 SyntacticMatches, 968 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2298 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 1449 NumberOfCodeBlocks, 1449 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1300 ConstructedInterpolants, 0 QuantifiedInterpolants, 282240 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 1 PerfectInterpolantSequences, 3800/7600 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: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int a = 20; [L15] int b = 0; [L16] CALL, EXPR sum(a, b) VAL [\old(m)=0, \old(n)=20] [L6] COND FALSE !(n <= 0) VAL [\old(m)=0, \old(n)=20, m=0, n=20] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=1, \old(n)=19] [L6] COND FALSE !(n <= 0) VAL [\old(m)=1, \old(n)=19, m=1, n=19] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=2, \old(n)=18] [L6] COND FALSE !(n <= 0) VAL [\old(m)=2, \old(n)=18, m=2, n=18] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=3, \old(n)=17] [L6] COND FALSE !(n <= 0) VAL [\old(m)=3, \old(n)=17, m=3, n=17] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=4, \old(n)=16] [L6] COND FALSE !(n <= 0) VAL [\old(m)=4, \old(n)=16, m=4, n=16] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=5, \old(n)=15] [L6] COND FALSE !(n <= 0) VAL [\old(m)=5, \old(n)=15, m=5, n=15] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=6, \old(n)=14] [L6] COND FALSE !(n <= 0) VAL [\old(m)=6, \old(n)=14, m=6, n=14] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=7, \old(n)=13] [L6] COND FALSE !(n <= 0) VAL [\old(m)=7, \old(n)=13, m=7, n=13] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=8, \old(n)=12] [L6] COND FALSE !(n <= 0) VAL [\old(m)=8, \old(n)=12, m=8, n=12] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=9, \old(n)=11] [L6] COND FALSE !(n <= 0) VAL [\old(m)=9, \old(n)=11, m=9, n=11] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=10, \old(n)=10] [L6] COND FALSE !(n <= 0) VAL [\old(m)=10, \old(n)=10, m=10, n=10] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=11, \old(n)=9] [L6] COND FALSE !(n <= 0) VAL [\old(m)=11, \old(n)=9, m=11, n=9] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=12, \old(n)=8] [L6] COND FALSE !(n <= 0) VAL [\old(m)=12, \old(n)=8, m=12, n=8] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=13, \old(n)=7] [L6] COND FALSE !(n <= 0) VAL [\old(m)=13, \old(n)=7, m=13, n=7] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=14, \old(n)=6] [L6] COND FALSE !(n <= 0) VAL [\old(m)=14, \old(n)=6, m=14, n=6] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=15, \old(n)=5] [L6] COND FALSE !(n <= 0) VAL [\old(m)=15, \old(n)=5, m=15, n=5] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=16, \old(n)=4] [L6] COND FALSE !(n <= 0) VAL [\old(m)=16, \old(n)=4, m=16, n=4] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=17, \old(n)=3] [L6] COND FALSE !(n <= 0) VAL [\old(m)=17, \old(n)=3, m=17, n=3] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=18, \old(n)=2] [L6] COND FALSE !(n <= 0) VAL [\old(m)=18, \old(n)=2, m=18, n=2] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=19, \old(n)=1] [L6] COND FALSE !(n <= 0) VAL [\old(m)=19, \old(n)=1, m=19, n=1] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=20, \old(n)=0] [L6] COND TRUE n <= 0 [L7] return m + n; VAL [\old(m)=20, \old(n)=0, \result=20, m=20, n=0] [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=19, \old(n)=1, m=19, n=1, sum(n - 1, m + 1)=20] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=18, \old(n)=2, m=18, n=2, sum(n - 1, m + 1)=20] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=17, \old(n)=3, m=17, n=3, sum(n - 1, m + 1)=20] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=16, \old(n)=4, m=16, n=4, sum(n - 1, m + 1)=20] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=15, \old(n)=5, m=15, n=5, sum(n - 1, m + 1)=20] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=14, \old(n)=6, m=14, n=6, sum(n - 1, m + 1)=20] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=13, \old(n)=7, m=13, n=7, sum(n - 1, m + 1)=20] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=12, \old(n)=8, m=12, n=8, sum(n - 1, m + 1)=20] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=11, \old(n)=9, m=11, n=9, sum(n - 1, m + 1)=20] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=10, \old(n)=10, m=10, n=10, sum(n - 1, m + 1)=20] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=9, \old(n)=11, m=9, n=11, sum(n - 1, m + 1)=20] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=8, \old(n)=12, m=8, n=12, sum(n - 1, m + 1)=20] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=7, \old(n)=13, m=7, n=13, sum(n - 1, m + 1)=20] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=6, \old(n)=14, m=6, n=14, sum(n - 1, m + 1)=20] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=5, \old(n)=15, m=5, n=15, sum(n - 1, m + 1)=20] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=4, \old(n)=16, m=4, n=16, sum(n - 1, m + 1)=20] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=3, \old(n)=17, m=3, n=17, sum(n - 1, m + 1)=20] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=2, \old(n)=18, m=2, n=18, sum(n - 1, m + 1)=20] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=1, \old(n)=19, m=1, n=19, sum(n - 1, m + 1)=20] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=0, \old(n)=20, m=0, n=20, sum(n - 1, m + 1)=20] [L9] return sum(n - 1, m + 1); [L16] RET, EXPR sum(a, b) [L16] int result = sum(a, b); [L17] COND TRUE result == a + b [L3] __assert_fail("0", "sum_20x0-1.c", 3, "reach_error") * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 77.6 MB. Free memory was 37.4 MB in the beginning and 37.3 MB in the end (delta: 71.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 301.13 ms. Allocated memory is still 113.2 MB. Free memory was 83.8 MB in the beginning and 89.9 MB in the end (delta: -6.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.21 ms. Allocated memory is still 113.2 MB. Free memory was 89.9 MB in the beginning and 88.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.28 ms. Allocated memory is still 113.2 MB. Free memory was 88.7 MB in the beginning and 87.8 MB in the end (delta: 913.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 365.40 ms. Allocated memory is still 113.2 MB. Free memory was 87.8 MB in the beginning and 74.8 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * CodeCheck took 10313.71 ms. Allocated memory was 113.2 MB in the beginning and 163.6 MB in the end (delta: 50.3 MB). Free memory was 74.8 MB in the beginning and 114.9 MB in the end (delta: -40.1 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. * Witness Printer took 156.23 ms. Allocated memory is still 163.6 MB. Free memory was 114.9 MB in the beginning and 108.6 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...