./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/sum_25x0-2.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_70b84a74-435d-448b-bd99-0435b052d702/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_70b84a74-435d-448b-bd99-0435b052d702/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_70b84a74-435d-448b-bd99-0435b052d702/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_70b84a74-435d-448b-bd99-0435b052d702/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/sum_25x0-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_70b84a74-435d-448b-bd99-0435b052d702/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_70b84a74-435d-448b-bd99-0435b052d702/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 2d8f12063511b3e3f39f22e34c8c81c8d42f35e2 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 18:05:47,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 18:05:47,152 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 18:05:47,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 18:05:47,246 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 18:05:47,248 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 18:05:47,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 18:05:47,253 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 18:05:47,256 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 18:05:47,257 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 18:05:47,259 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 18:05:47,260 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 18:05:47,261 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 18:05:47,263 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 18:05:47,264 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 18:05:47,266 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 18:05:47,267 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 18:05:47,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 18:05:47,271 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 18:05:47,274 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 18:05:47,277 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 18:05:47,282 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 18:05:47,285 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 18:05:47,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 18:05:47,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 18:05:47,298 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 18:05:47,299 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 18:05:47,301 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 18:05:47,302 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 18:05:47,305 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 18:05:47,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 18:05:47,308 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 18:05:47,310 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 18:05:47,312 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 18:05:47,313 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 18:05:47,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 18:05:47,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 18:05:47,315 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 18:05:47,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 18:05:47,316 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 18:05:47,317 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 18:05:47,320 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_70b84a74-435d-448b-bd99-0435b052d702/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-12-01 18:05:47,367 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 18:05:47,367 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 18:05:47,369 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-01 18:05:47,369 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-12-01 18:05:47,370 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 18:05:47,370 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 18:05:47,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 18:05:47,371 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 18:05:47,371 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 18:05:47,371 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 18:05:47,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 18:05:47,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 18:05:47,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 18:05:47,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 18:05:47,374 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 18:05:47,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 18:05:47,375 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 18:05:47,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 18:05:47,375 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-12-01 18:05:47,376 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-12-01 18:05:47,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 18:05:47,376 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 18:05:47,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-01 18:05:47,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 18:05:47,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 18:05:47,378 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 18:05:47,378 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-12-01 18:05:47,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 18:05:47,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 18:05:47,379 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_70b84a74-435d-448b-bd99-0435b052d702/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_70b84a74-435d-448b-bd99-0435b052d702/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d8f12063511b3e3f39f22e34c8c81c8d42f35e2 [2020-12-01 18:05:47,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 18:05:47,764 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 18:05:47,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 18:05:47,769 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 18:05:47,777 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 18:05:47,778 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_70b84a74-435d-448b-bd99-0435b052d702/bin/ukojak/../../sv-benchmarks/c/recursive-simple/sum_25x0-2.c [2020-12-01 18:05:47,880 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_70b84a74-435d-448b-bd99-0435b052d702/bin/ukojak/data/2565fae30/96db7e19648640a496240d8095e76d0d/FLAG5ce11a2f7 [2020-12-01 18:05:48,416 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 18:05:48,417 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_70b84a74-435d-448b-bd99-0435b052d702/sv-benchmarks/c/recursive-simple/sum_25x0-2.c [2020-12-01 18:05:48,434 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_70b84a74-435d-448b-bd99-0435b052d702/bin/ukojak/data/2565fae30/96db7e19648640a496240d8095e76d0d/FLAG5ce11a2f7 [2020-12-01 18:05:48,794 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_70b84a74-435d-448b-bd99-0435b052d702/bin/ukojak/data/2565fae30/96db7e19648640a496240d8095e76d0d [2020-12-01 18:05:48,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 18:05:48,799 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 18:05:48,801 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 18:05:48,801 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 18:05:48,805 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 18:05:48,806 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 06:05:48" (1/1) ... [2020-12-01 18:05:48,808 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c9d4f9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:05:48, skipping insertion in model container [2020-12-01 18:05:48,809 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 06:05:48" (1/1) ... [2020-12-01 18:05:48,818 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 18:05:48,833 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 18:05:49,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 18:05:49,071 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 18:05:49,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 18:05:49,114 INFO L208 MainTranslator]: Completed translation [2020-12-01 18:05:49,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:05:49 WrapperNode [2020-12-01 18:05:49,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 18:05:49,123 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 18:05:49,124 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 18:05:49,124 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 18:05:49,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:05:49" (1/1) ... [2020-12-01 18:05:49,149 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:05:49" (1/1) ... [2020-12-01 18:05:49,177 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 18:05:49,178 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 18:05:49,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 18:05:49,178 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 18:05:49,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:05:49" (1/1) ... [2020-12-01 18:05:49,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:05:49" (1/1) ... [2020-12-01 18:05:49,189 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:05:49" (1/1) ... [2020-12-01 18:05:49,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:05:49" (1/1) ... [2020-12-01 18:05:49,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:05:49" (1/1) ... [2020-12-01 18:05:49,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:05:49" (1/1) ... [2020-12-01 18:05:49,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:05:49" (1/1) ... [2020-12-01 18:05:49,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 18:05:49,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 18:05:49,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 18:05:49,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 18:05:49,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:05:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70b84a74-435d-448b-bd99-0435b052d702/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 18:05:49,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 18:05:49,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 18:05:49,281 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-12-01 18:05:49,282 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-12-01 18:05:49,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 18:05:49,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 18:05:49,538 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 18:05:49,538 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-12-01 18:05:49,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:05:49 BoogieIcfgContainer [2020-12-01 18:05:49,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 18:05:49,542 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-12-01 18:05:49,543 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-12-01 18:05:49,558 INFO L275 PluginConnector]: CodeCheck initialized [2020-12-01 18:05:49,558 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:05:49" (1/1) ... [2020-12-01 18:05:49,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 18:05:49,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:05:49,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 14 states and 16 transitions. [2020-12-01 18:05:49,655 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-12-01 18:05:49,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-01 18:05:49,661 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:05:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:05:50,000 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 18:05:50,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:05:50,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 16 states and 18 transitions. [2020-12-01 18:05:50,175 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-12-01 18:05:50,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 18:05:50,176 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:05:50,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:05:50,274 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 18:05:50,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:05:50,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 19 states and 23 transitions. [2020-12-01 18:05:50,473 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2020-12-01 18:05:50,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-01 18:05:50,475 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:05:50,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:05:50,597 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 18:05:50,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:05:50,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 22 states and 29 transitions. [2020-12-01 18:05:50,743 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2020-12-01 18:05:50,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-01 18:05:50,744 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:05:50,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:05:50,846 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 18:05:51,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:05:51,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 25 states and 36 transitions. [2020-12-01 18:05:51,025 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 36 transitions. [2020-12-01 18:05:51,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-01 18:05:51,029 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:05:51,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:05:51,200 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 18:05:51,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:05:51,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 28 states and 44 transitions. [2020-12-01 18:05:51,363 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 44 transitions. [2020-12-01 18:05:51,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-01 18:05:51,366 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:05:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:05:51,533 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 18:05:51,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:05:51,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 31 states and 53 transitions. [2020-12-01 18:05:51,703 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 53 transitions. [2020-12-01 18:05:51,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-01 18:05:51,706 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:05:51,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:05:51,815 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 18:05:51,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:05:51,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 34 states and 63 transitions. [2020-12-01 18:05:51,987 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 63 transitions. [2020-12-01 18:05:51,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-01 18:05:52,000 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:05:52,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:05:52,159 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 18:05:52,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:05:52,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 37 states and 74 transitions. [2020-12-01 18:05:52,388 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 74 transitions. [2020-12-01 18:05:52,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-01 18:05:52,395 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:05:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:05:52,574 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 18:05:52,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:05:52,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 40 states and 86 transitions. [2020-12-01 18:05:52,860 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 86 transitions. [2020-12-01 18:05:52,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-01 18:05:52,864 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:05:52,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:05:53,044 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 18:05:53,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:05:53,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 43 states and 99 transitions. [2020-12-01 18:05:53,319 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 99 transitions. [2020-12-01 18:05:53,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-01 18:05:53,324 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:05:53,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:05:53,501 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 18:05:53,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:05:53,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 46 states and 113 transitions. [2020-12-01 18:05:53,814 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 113 transitions. [2020-12-01 18:05:53,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-01 18:05:53,815 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:05:53,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:05:53,938 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 18:05:54,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:05:54,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 49 states and 128 transitions. [2020-12-01 18:05:54,203 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 128 transitions. [2020-12-01 18:05:54,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-01 18:05:54,205 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:05:54,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:05:54,325 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 18:05:54,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:05:54,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 52 states and 144 transitions. [2020-12-01 18:05:54,630 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 144 transitions. [2020-12-01 18:05:54,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-01 18:05:54,632 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:05:54,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:05:54,764 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 18:05:55,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:05:55,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 55 states and 161 transitions. [2020-12-01 18:05:55,094 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 161 transitions. [2020-12-01 18:05:55,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-01 18:05:55,099 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:05:55,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:05:55,268 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 18:05:55,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:05:55,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 58 states and 179 transitions. [2020-12-01 18:05:55,604 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 179 transitions. [2020-12-01 18:05:55,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-01 18:05:55,609 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:05:55,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:05:55,760 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 18:05:56,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:05:56,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 61 states and 198 transitions. [2020-12-01 18:05:56,102 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 198 transitions. [2020-12-01 18:05:56,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-01 18:05:56,108 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:05:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:05:56,256 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 18:05:56,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:05:56,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 64 states and 218 transitions. [2020-12-01 18:05:56,642 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 218 transitions. [2020-12-01 18:05:56,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-01 18:05:56,653 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:05:56,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:05:56,839 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 18:05:57,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:05:57,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 67 states and 239 transitions. [2020-12-01 18:05:57,253 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 239 transitions. [2020-12-01 18:05:57,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-12-01 18:05:57,255 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:05:57,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:05:57,444 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 18:05:57,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:05:57,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 70 states and 261 transitions. [2020-12-01 18:05:57,886 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 261 transitions. [2020-12-01 18:05:57,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-12-01 18:05:57,888 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:05:57,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:05:58,029 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 18:05:58,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:05:58,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 73 states and 284 transitions. [2020-12-01 18:05:58,413 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 284 transitions. [2020-12-01 18:05:58,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-12-01 18:05:58,416 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:05:58,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:05:58,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 610 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2020-12-01 18:05:59,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:05:59,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 76 states and 308 transitions. [2020-12-01 18:05:59,116 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 308 transitions. [2020-12-01 18:05:59,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-12-01 18:05:59,119 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:05:59,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:05:59,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2020-12-01 18:05:59,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:05:59,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 79 states and 333 transitions. [2020-12-01 18:05:59,830 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 333 transitions. [2020-12-01 18:05:59,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-12-01 18:05:59,835 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:05:59,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:06:00,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2020-12-01 18:06:00,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:06:00,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 82 states and 359 transitions. [2020-12-01 18:06:00,601 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 359 transitions. [2020-12-01 18:06:00,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-12-01 18:06:00,603 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:06:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:06:00,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2020-12-01 18:06:01,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:06:01,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 85 states and 386 transitions. [2020-12-01 18:06:01,357 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 386 transitions. [2020-12-01 18:06:01,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-01 18:06:01,360 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:06:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:06:01,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 0 proven. 876 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2020-12-01 18:06:02,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:06:02,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 88 states and 414 transitions. [2020-12-01 18:06:02,120 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 414 transitions. [2020-12-01 18:06:02,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-12-01 18:06:02,123 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:06:02,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 18:06:02,221 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 18:06:02,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 18:06:02,304 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 18:06:02,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 18:06:02,526 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 18:06:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 18:06:02,605 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 18:06:03,966 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 26 iterations. [2020-12-01 18:06:04,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 06:06:04 ImpRootNode [2020-12-01 18:06:04,153 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-12-01 18:06:04,153 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 18:06:04,154 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 18:06:04,154 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 18:06:04,155 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:05:49" (3/4) ... [2020-12-01 18:06:04,157 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 18:06:04,316 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_70b84a74-435d-448b-bd99-0435b052d702/bin/ukojak/witness.graphml [2020-12-01 18:06:04,316 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 18:06:04,319 INFO L168 Benchmark]: Toolchain (without parser) took 15519.02 ms. Allocated memory was 92.3 MB in the beginning and 195.0 MB in the end (delta: 102.8 MB). Free memory was 62.0 MB in the beginning and 149.6 MB in the end (delta: -87.6 MB). Peak memory consumption was 15.5 MB. Max. memory is 16.1 GB. [2020-12-01 18:06:04,320 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 92.3 MB. Free memory was 51.7 MB in the beginning and 51.6 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 18:06:04,320 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.50 ms. Allocated memory is still 92.3 MB. Free memory was 62.0 MB in the beginning and 69.9 MB in the end (delta: -7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 18:06:04,321 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.63 ms. Allocated memory is still 92.3 MB. Free memory was 69.9 MB in the beginning and 68.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 18:06:04,322 INFO L168 Benchmark]: Boogie Preprocessor took 21.75 ms. Allocated memory is still 92.3 MB. Free memory was 68.6 MB in the beginning and 67.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 18:06:04,323 INFO L168 Benchmark]: RCFGBuilder took 340.74 ms. Allocated memory is still 92.3 MB. Free memory was 67.5 MB in the beginning and 55.0 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-01 18:06:04,323 INFO L168 Benchmark]: CodeCheck took 14610.44 ms. Allocated memory was 92.3 MB in the beginning and 195.0 MB in the end (delta: 102.8 MB). Free memory was 55.0 MB in the beginning and 156.9 MB in the end (delta: -101.9 MB). Peak memory consumption was 104.4 MB. Max. memory is 16.1 GB. [2020-12-01 18:06:04,324 INFO L168 Benchmark]: Witness Printer took 163.30 ms. Allocated memory is still 195.0 MB. Free memory was 156.9 MB in the beginning and 149.6 MB in the end (delta: 7.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 18:06:04,328 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: 14.3s, OverallIterations: 26, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 234881024 SDtfs, 218103800 SDslu, 352321520 SDs, 0 SdLazy, 1023409942 SolverSat, 184549370 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37043 GetRequests, 35418 SyntacticMatches, 1523 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3683 ImplicationChecksByTransitivity, 5.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 2184 NumberOfCodeBlocks, 2184 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 2000 ConstructedInterpolants, 0 QuantifiedInterpolants, 540800 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 25 InterpolantComputations, 1 PerfectInterpolantSequences, 7500/15000 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 = 25; [L15] int b = 0; [L16] CALL, EXPR sum(a, b) VAL [\old(m)=0, \old(n)=25] [L6] COND FALSE !(n <= 0) VAL [\old(m)=0, \old(n)=25, m=0, n=25] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=1, \old(n)=24] [L6] COND FALSE !(n <= 0) VAL [\old(m)=1, \old(n)=24, m=1, n=24] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=2, \old(n)=23] [L6] COND FALSE !(n <= 0) VAL [\old(m)=2, \old(n)=23, m=2, n=23] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=3, \old(n)=22] [L6] COND FALSE !(n <= 0) VAL [\old(m)=3, \old(n)=22, m=3, n=22] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=4, \old(n)=21] [L6] COND FALSE !(n <= 0) VAL [\old(m)=4, \old(n)=21, m=4, n=21] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=5, \old(n)=20] [L6] COND FALSE !(n <= 0) VAL [\old(m)=5, \old(n)=20, m=5, n=20] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=6, \old(n)=19] [L6] COND FALSE !(n <= 0) VAL [\old(m)=6, \old(n)=19, m=6, n=19] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=7, \old(n)=18] [L6] COND FALSE !(n <= 0) VAL [\old(m)=7, \old(n)=18, m=7, n=18] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=8, \old(n)=17] [L6] COND FALSE !(n <= 0) VAL [\old(m)=8, \old(n)=17, m=8, n=17] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=9, \old(n)=16] [L6] COND FALSE !(n <= 0) VAL [\old(m)=9, \old(n)=16, m=9, n=16] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=10, \old(n)=15] [L6] COND FALSE !(n <= 0) VAL [\old(m)=10, \old(n)=15, m=10, n=15] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=11, \old(n)=14] [L6] COND FALSE !(n <= 0) VAL [\old(m)=11, \old(n)=14, m=11, n=14] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=12, \old(n)=13] [L6] COND FALSE !(n <= 0) VAL [\old(m)=12, \old(n)=13, m=12, n=13] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=13, \old(n)=12] [L6] COND FALSE !(n <= 0) VAL [\old(m)=13, \old(n)=12, m=13, n=12] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=14, \old(n)=11] [L6] COND FALSE !(n <= 0) VAL [\old(m)=14, \old(n)=11, m=14, n=11] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=15, \old(n)=10] [L6] COND FALSE !(n <= 0) VAL [\old(m)=15, \old(n)=10, m=15, n=10] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=16, \old(n)=9] [L6] COND FALSE !(n <= 0) VAL [\old(m)=16, \old(n)=9, m=16, n=9] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=17, \old(n)=8] [L6] COND FALSE !(n <= 0) VAL [\old(m)=17, \old(n)=8, m=17, n=8] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=18, \old(n)=7] [L6] COND FALSE !(n <= 0) VAL [\old(m)=18, \old(n)=7, m=18, n=7] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=19, \old(n)=6] [L6] COND FALSE !(n <= 0) VAL [\old(m)=19, \old(n)=6, m=19, n=6] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=20, \old(n)=5] [L6] COND FALSE !(n <= 0) VAL [\old(m)=20, \old(n)=5, m=20, n=5] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=21, \old(n)=4] [L6] COND FALSE !(n <= 0) VAL [\old(m)=21, \old(n)=4, m=21, n=4] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=22, \old(n)=3] [L6] COND FALSE !(n <= 0) VAL [\old(m)=22, \old(n)=3, m=22, n=3] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=23, \old(n)=2] [L6] COND FALSE !(n <= 0) VAL [\old(m)=23, \old(n)=2, m=23, n=2] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=24, \old(n)=1] [L6] COND FALSE !(n <= 0) VAL [\old(m)=24, \old(n)=1, m=24, n=1] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=25, \old(n)=0] [L6] COND TRUE n <= 0 [L7] return m + n; VAL [\old(m)=25, \old(n)=0, \result=25, m=25, n=0] [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=24, \old(n)=1, m=24, n=1, sum(n - 1, m + 1)=25] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=23, \old(n)=2, m=23, n=2, sum(n - 1, m + 1)=25] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=22, \old(n)=3, m=22, n=3, sum(n - 1, m + 1)=25] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=21, \old(n)=4, m=21, n=4, sum(n - 1, m + 1)=25] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=20, \old(n)=5, m=20, n=5, sum(n - 1, m + 1)=25] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=19, \old(n)=6, m=19, n=6, sum(n - 1, m + 1)=25] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=18, \old(n)=7, m=18, n=7, sum(n - 1, m + 1)=25] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=17, \old(n)=8, m=17, n=8, sum(n - 1, m + 1)=25] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=16, \old(n)=9, m=16, n=9, sum(n - 1, m + 1)=25] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=15, \old(n)=10, m=15, n=10, sum(n - 1, m + 1)=25] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=14, \old(n)=11, m=14, n=11, sum(n - 1, m + 1)=25] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=13, \old(n)=12, m=13, n=12, sum(n - 1, m + 1)=25] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=12, \old(n)=13, m=12, n=13, sum(n - 1, m + 1)=25] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=11, \old(n)=14, m=11, n=14, sum(n - 1, m + 1)=25] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=10, \old(n)=15, m=10, n=15, sum(n - 1, m + 1)=25] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=9, \old(n)=16, m=9, n=16, sum(n - 1, m + 1)=25] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=8, \old(n)=17, m=8, n=17, sum(n - 1, m + 1)=25] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=7, \old(n)=18, m=7, n=18, sum(n - 1, m + 1)=25] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=6, \old(n)=19, m=6, n=19, sum(n - 1, m + 1)=25] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=5, \old(n)=20, m=5, n=20, sum(n - 1, m + 1)=25] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=4, \old(n)=21, m=4, n=21, sum(n - 1, m + 1)=25] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=3, \old(n)=22, m=3, n=22, sum(n - 1, m + 1)=25] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=2, \old(n)=23, m=2, n=23, sum(n - 1, m + 1)=25] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=1, \old(n)=24, m=1, n=24, sum(n - 1, m + 1)=25] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=0, \old(n)=25, m=0, n=25, sum(n - 1, m + 1)=25] [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_25x0-2.c", 3, "reach_error") * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 92.3 MB. Free memory was 51.7 MB in the beginning and 51.6 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 315.50 ms. Allocated memory is still 92.3 MB. Free memory was 62.0 MB in the beginning and 69.9 MB in the end (delta: -7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.63 ms. Allocated memory is still 92.3 MB. Free memory was 69.9 MB in the beginning and 68.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.75 ms. Allocated memory is still 92.3 MB. Free memory was 68.6 MB in the beginning and 67.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 340.74 ms. Allocated memory is still 92.3 MB. Free memory was 67.5 MB in the beginning and 55.0 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * CodeCheck took 14610.44 ms. Allocated memory was 92.3 MB in the beginning and 195.0 MB in the end (delta: 102.8 MB). Free memory was 55.0 MB in the beginning and 156.9 MB in the end (delta: -101.9 MB). Peak memory consumption was 104.4 MB. Max. memory is 16.1 GB. * Witness Printer took 163.30 ms. Allocated memory is still 195.0 MB. Free memory was 156.9 MB in the beginning and 149.6 MB in the end (delta: 7.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...