./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/nec20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_16b3b8ba-5a86-4a13-88f1-930f4d594ca4/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_16b3b8ba-5a86-4a13-88f1-930f4d594ca4/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_16b3b8ba-5a86-4a13-88f1-930f4d594ca4/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_16b3b8ba-5a86-4a13-88f1-930f4d594ca4/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/loops/nec20.c -s /tmp/vcloud-vcloud-master/worker/run_dir_16b3b8ba-5a86-4a13-88f1-930f4d594ca4/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_16b3b8ba-5a86-4a13-88f1-930f4d594ca4/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 b24dfa0dd4504b10530e4ddbc9574e106897fa2d ....................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 04:37:25,952 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 04:37:25,955 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 04:37:26,020 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 04:37:26,021 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 04:37:26,029 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 04:37:26,030 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 04:37:26,032 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 04:37:26,035 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 04:37:26,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 04:37:26,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 04:37:26,038 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 04:37:26,039 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 04:37:26,040 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 04:37:26,042 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 04:37:26,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 04:37:26,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 04:37:26,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 04:37:26,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 04:37:26,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 04:37:26,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 04:37:26,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 04:37:26,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 04:37:26,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 04:37:26,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 04:37:26,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 04:37:26,060 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 04:37:26,061 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 04:37:26,061 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 04:37:26,062 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 04:37:26,063 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 04:37:26,064 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 04:37:26,065 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 04:37:26,066 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 04:37:26,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 04:37:26,067 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 04:37:26,068 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 04:37:26,068 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 04:37:26,069 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 04:37:26,069 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 04:37:26,070 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 04:37:26,071 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_16b3b8ba-5a86-4a13-88f1-930f4d594ca4/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-11-28 04:37:26,094 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 04:37:26,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 04:37:26,095 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 04:37:26,095 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-11-28 04:37:26,095 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 04:37:26,095 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 04:37:26,096 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 04:37:26,096 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 04:37:26,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 04:37:26,096 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 04:37:26,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 04:37:26,100 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 04:37:26,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 04:37:26,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 04:37:26,101 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 04:37:26,101 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 04:37:26,102 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 04:37:26,102 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 04:37:26,102 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-28 04:37:26,102 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-28 04:37:26,103 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 04:37:26,103 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 04:37:26,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-28 04:37:26,103 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 04:37:26,104 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 04:37:26,104 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 04:37:26,104 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-28 04:37:26,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 04:37:26,104 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 04:37:26,105 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_16b3b8ba-5a86-4a13-88f1-930f4d594ca4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_16b3b8ba-5a86-4a13-88f1-930f4d594ca4/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b24dfa0dd4504b10530e4ddbc9574e106897fa2d [2020-11-28 04:37:26,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 04:37:26,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 04:37:26,443 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 04:37:26,445 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 04:37:26,447 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 04:37:26,448 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_16b3b8ba-5a86-4a13-88f1-930f4d594ca4/bin/ukojak/../../sv-benchmarks/c/loops/nec20.c [2020-11-28 04:37:26,540 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_16b3b8ba-5a86-4a13-88f1-930f4d594ca4/bin/ukojak/data/194e14dcf/2d00b8813cf74739886d198cda0265ba/FLAGd8097b4e9 [2020-11-28 04:37:27,091 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 04:37:27,092 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_16b3b8ba-5a86-4a13-88f1-930f4d594ca4/sv-benchmarks/c/loops/nec20.c [2020-11-28 04:37:27,102 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_16b3b8ba-5a86-4a13-88f1-930f4d594ca4/bin/ukojak/data/194e14dcf/2d00b8813cf74739886d198cda0265ba/FLAGd8097b4e9 [2020-11-28 04:37:27,467 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_16b3b8ba-5a86-4a13-88f1-930f4d594ca4/bin/ukojak/data/194e14dcf/2d00b8813cf74739886d198cda0265ba [2020-11-28 04:37:27,469 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 04:37:27,471 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 04:37:27,473 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 04:37:27,473 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 04:37:27,476 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 04:37:27,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:37:27" (1/1) ... [2020-11-28 04:37:27,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57d596e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:27, skipping insertion in model container [2020-11-28 04:37:27,479 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:37:27" (1/1) ... [2020-11-28 04:37:27,486 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 04:37:27,500 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 04:37:27,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:37:27,731 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 04:37:27,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:37:27,780 INFO L208 MainTranslator]: Completed translation [2020-11-28 04:37:27,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:27 WrapperNode [2020-11-28 04:37:27,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 04:37:27,782 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 04:37:27,782 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 04:37:27,782 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 04:37:27,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:27" (1/1) ... [2020-11-28 04:37:27,796 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:27" (1/1) ... [2020-11-28 04:37:27,814 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 04:37:27,815 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 04:37:27,815 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 04:37:27,815 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 04:37:27,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:27" (1/1) ... [2020-11-28 04:37:27,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:27" (1/1) ... [2020-11-28 04:37:27,839 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:27" (1/1) ... [2020-11-28 04:37:27,839 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:27" (1/1) ... [2020-11-28 04:37:27,842 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:27" (1/1) ... [2020-11-28 04:37:27,846 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:27" (1/1) ... [2020-11-28 04:37:27,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:27" (1/1) ... [2020-11-28 04:37:27,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 04:37:27,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 04:37:27,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 04:37:27,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 04:37:27,859 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_16b3b8ba-5a86-4a13-88f1-930f4d594ca4/bin/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-28 04:37:27,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 04:37:27,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 04:37:27,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 04:37:27,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 04:37:28,502 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 04:37:28,503 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 04:37:28,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:37:28 BoogieIcfgContainer [2020-11-28 04:37:28,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 04:37:28,506 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-28 04:37:28,506 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-28 04:37:28,517 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-28 04:37:28,518 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:37:28" (1/1) ... [2020-11-28 04:37:28,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 04:37:28,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:37:28,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 9 states and 11 transitions. [2020-11-28 04:37:28,573 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2020-11-28 04:37:28,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 04:37:28,575 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:37:28,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:37:28,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:37:28,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:37:28,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 10 states and 12 transitions. [2020-11-28 04:37:28,857 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2020-11-28 04:37:28,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 04:37:28,857 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:37:28,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:37:28,895 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:37:28,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:37:28,964 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:37:29,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:37:29,045 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:37:29,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:37:29,076 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:37:29,095 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2020-11-28 04:37:29,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 28.11 04:37:29 ImpRootNode [2020-11-28 04:37:29,126 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-28 04:37:29,126 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 04:37:29,127 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 04:37:29,127 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 04:37:29,127 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:37:28" (3/4) ... [2020-11-28 04:37:29,131 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 04:37:29,208 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_16b3b8ba-5a86-4a13-88f1-930f4d594ca4/bin/ukojak/witness.graphml [2020-11-28 04:37:29,208 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 04:37:29,210 INFO L168 Benchmark]: Toolchain (without parser) took 1738.43 ms. Allocated memory is still 111.1 MB. Free memory was 75.8 MB in the beginning and 42.2 MB in the end (delta: 33.6 MB). Peak memory consumption was 32.9 MB. Max. memory is 16.1 GB. [2020-11-28 04:37:29,211 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 111.1 MB. Free memory was 81.7 MB in the beginning and 81.7 MB in the end (delta: 27.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:37:29,211 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.60 ms. Allocated memory is still 111.1 MB. Free memory was 75.5 MB in the beginning and 87.9 MB in the end (delta: -12.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 04:37:29,212 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.56 ms. Allocated memory is still 111.1 MB. Free memory was 87.4 MB in the beginning and 86.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:37:29,212 INFO L168 Benchmark]: Boogie Preprocessor took 35.54 ms. Allocated memory is still 111.1 MB. Free memory was 86.2 MB in the beginning and 85.3 MB in the end (delta: 955.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:37:29,213 INFO L168 Benchmark]: RCFGBuilder took 653.42 ms. Allocated memory is still 111.1 MB. Free memory was 85.3 MB in the beginning and 66.4 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-28 04:37:29,213 INFO L168 Benchmark]: CodeCheck took 620.43 ms. Allocated memory is still 111.1 MB. Free memory was 66.4 MB in the beginning and 44.3 MB in the end (delta: 22.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:37:29,214 INFO L168 Benchmark]: Witness Printer took 81.90 ms. Allocated memory is still 111.1 MB. Free memory was 44.3 MB in the beginning and 42.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:37:29,228 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 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7 SDtfs, 2 SDslu, 2 SDs, 0 SdLazy, 5 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 32 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int b; [L15] _Bool k=__VERIFIER_nondet_bool(); [L16] unsigned int i,n,j; [L17] int a[1025]; [L19] COND TRUE \read(k) [L20] n=0 [L25] i=0 [L26] j=__VERIFIER_nondet_uint() [L27] COND FALSE !(j > 10000) VAL [b=0] [L30] COND TRUE i <= n [L31] i++ [L32] j= j +2 VAL [b=0] [L30] COND FALSE !(i <= n) [L35] a[i]=0 [L7] COND TRUE !(cond) VAL [b=0] [L3] __assert_fail("0", "nec20.c", 3, "reach_error") VAL [b=0] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 111.1 MB. Free memory was 81.7 MB in the beginning and 81.7 MB in the end (delta: 27.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 308.60 ms. Allocated memory is still 111.1 MB. Free memory was 75.5 MB in the beginning and 87.9 MB in the end (delta: -12.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.56 ms. Allocated memory is still 111.1 MB. Free memory was 87.4 MB in the beginning and 86.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.54 ms. Allocated memory is still 111.1 MB. Free memory was 86.2 MB in the beginning and 85.3 MB in the end (delta: 955.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 653.42 ms. Allocated memory is still 111.1 MB. Free memory was 85.3 MB in the beginning and 66.4 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * CodeCheck took 620.43 ms. Allocated memory is still 111.1 MB. Free memory was 66.4 MB in the beginning and 44.3 MB in the end (delta: 22.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Witness Printer took 81.90 ms. Allocated memory is still 111.1 MB. Free memory was 44.3 MB in the beginning and 42.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...