./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ifeqn4f.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_49a16c6e-fe74-408a-a125-241b84d6c5bb/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_49a16c6e-fe74-408a-a125-241b84d6c5bb/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_49a16c6e-fe74-408a-a125-241b84d6c5bb/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_49a16c6e-fe74-408a-a125-241b84d6c5bb/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/array-fpi/ifeqn4f.c -s /tmp/vcloud-vcloud-master/worker/run_dir_49a16c6e-fe74-408a-a125-241b84d6c5bb/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_49a16c6e-fe74-408a-a125-241b84d6c5bb/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 eebb9b7e62b5fc3108854fe0ad79e9ef5b6cd643 ............................................................................................................................................................................................................................................................................................................... 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 18:02:10,233 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 18:02:10,235 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 18:02:10,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 18:02:10,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 18:02:10,326 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 18:02:10,329 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 18:02:10,335 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 18:02:10,338 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 18:02:10,348 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 18:02:10,349 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 18:02:10,352 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 18:02:10,353 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 18:02:10,357 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 18:02:10,359 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 18:02:10,362 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 18:02:10,363 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 18:02:10,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 18:02:10,374 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 18:02:10,381 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 18:02:10,384 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 18:02:10,386 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 18:02:10,388 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 18:02:10,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 18:02:10,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 18:02:10,397 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 18:02:10,397 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 18:02:10,400 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 18:02:10,401 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 18:02:10,402 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 18:02:10,403 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 18:02:10,404 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 18:02:10,406 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 18:02:10,408 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 18:02:10,409 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 18:02:10,410 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 18:02:10,410 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 18:02:10,411 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 18:02:10,411 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 18:02:10,412 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 18:02:10,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 18:02:10,414 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_49a16c6e-fe74-408a-a125-241b84d6c5bb/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-12-01 18:02:10,448 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 18:02:10,448 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 18:02:10,449 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-01 18:02:10,449 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-12-01 18:02:10,450 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 18:02:10,450 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 18:02:10,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 18:02:10,451 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 18:02:10,451 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 18:02:10,451 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 18:02:10,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 18:02:10,452 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 18:02:10,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 18:02:10,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 18:02:10,452 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 18:02:10,452 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 18:02:10,453 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 18:02:10,453 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 18:02:10,453 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-12-01 18:02:10,453 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-12-01 18:02:10,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 18:02:10,454 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 18:02:10,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-01 18:02:10,454 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 18:02:10,454 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 18:02:10,455 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 18:02:10,455 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-12-01 18:02:10,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 18:02:10,455 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 18:02:10,455 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_49a16c6e-fe74-408a-a125-241b84d6c5bb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_49a16c6e-fe74-408a-a125-241b84d6c5bb/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eebb9b7e62b5fc3108854fe0ad79e9ef5b6cd643 [2020-12-01 18:02:10,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 18:02:10,787 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 18:02:10,790 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 18:02:10,792 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 18:02:10,794 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 18:02:10,795 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_49a16c6e-fe74-408a-a125-241b84d6c5bb/bin/ukojak/../../sv-benchmarks/c/array-fpi/ifeqn4f.c [2020-12-01 18:02:10,902 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_49a16c6e-fe74-408a-a125-241b84d6c5bb/bin/ukojak/data/af4c27d5a/4f3748a03f4f403bb120025e4ed7cd8d/FLAG0c9898ad6 [2020-12-01 18:02:11,405 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 18:02:11,406 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_49a16c6e-fe74-408a-a125-241b84d6c5bb/sv-benchmarks/c/array-fpi/ifeqn4f.c [2020-12-01 18:02:11,413 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_49a16c6e-fe74-408a-a125-241b84d6c5bb/bin/ukojak/data/af4c27d5a/4f3748a03f4f403bb120025e4ed7cd8d/FLAG0c9898ad6 [2020-12-01 18:02:11,757 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_49a16c6e-fe74-408a-a125-241b84d6c5bb/bin/ukojak/data/af4c27d5a/4f3748a03f4f403bb120025e4ed7cd8d [2020-12-01 18:02:11,759 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 18:02:11,761 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 18:02:11,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 18:02:11,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 18:02:11,769 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 18:02:11,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 06:02:11" (1/1) ... [2020-12-01 18:02:11,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fad5779 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:02:11, skipping insertion in model container [2020-12-01 18:02:11,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 06:02:11" (1/1) ... [2020-12-01 18:02:11,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 18:02:11,807 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 18:02:12,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 18:02:12,087 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 18:02:12,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 18:02:12,124 INFO L208 MainTranslator]: Completed translation [2020-12-01 18:02:12,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:02:12 WrapperNode [2020-12-01 18:02:12,124 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 18:02:12,126 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 18:02:12,126 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 18:02:12,126 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 18:02:12,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:02:12" (1/1) ... [2020-12-01 18:02:12,142 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:02:12" (1/1) ... [2020-12-01 18:02:12,165 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 18:02:12,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 18:02:12,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 18:02:12,167 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 18:02:12,177 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:02:12" (1/1) ... [2020-12-01 18:02:12,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:02:12" (1/1) ... [2020-12-01 18:02:12,189 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:02:12" (1/1) ... [2020-12-01 18:02:12,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:02:12" (1/1) ... [2020-12-01 18:02:12,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:02:12" (1/1) ... [2020-12-01 18:02:12,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:02:12" (1/1) ... [2020-12-01 18:02:12,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:02:12" (1/1) ... [2020-12-01 18:02:12,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 18:02:12,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 18:02:12,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 18:02:12,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 18:02:12,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:02:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_49a16c6e-fe74-408a-a125-241b84d6c5bb/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 18:02:12,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 18:02:12,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 18:02:12,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 18:02:12,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-01 18:02:12,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 18:02:12,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 18:02:12,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 18:02:12,896 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 18:02:12,897 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-12-01 18:02:12,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:02:12 BoogieIcfgContainer [2020-12-01 18:02:12,900 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 18:02:12,901 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-12-01 18:02:12,901 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-12-01 18:02:12,918 INFO L275 PluginConnector]: CodeCheck initialized [2020-12-01 18:02:12,919 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:02:12" (1/1) ... [2020-12-01 18:02:12,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 18:02:12,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:02:12,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 11 states and 15 transitions. [2020-12-01 18:02:12,996 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 15 transitions. [2020-12-01 18:02:12,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-01 18:02:12,999 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:02:13,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:02:13,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-01 18:02:13,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 18:02:13,269 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 18:02:13,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:02:13,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 12 states and 16 transitions. [2020-12-01 18:02:13,310 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 16 transitions. [2020-12-01 18:02:13,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 18:02:13,311 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:02:13,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:02:13,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-01 18:02:13,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 18:02:13,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-01 18:02:13,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:02:13,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 13 states and 18 transitions. [2020-12-01 18:02:13,557 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 18 transitions. [2020-12-01 18:02:13,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-01 18:02:13,558 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:02:13,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:02:13,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-01 18:02:13,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 18:02:13,799 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-01 18:02:13,801 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 18:02:13,804 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 18:02:13,807 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 18:02:13,808 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-12-01 18:02:13,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 18:02:14,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:02:14,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 16 states and 24 transitions. [2020-12-01 18:02:14,655 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 24 transitions. [2020-12-01 18:02:14,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 18:02:14,657 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:02:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:02:14,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-01 18:02:14,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 18:02:15,052 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-01 18:02:16,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:02:16,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 22 states and 34 transitions. [2020-12-01 18:02:16,097 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 34 transitions. [2020-12-01 18:02:16,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-01 18:02:16,098 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:02:16,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:02:16,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-01 18:02:16,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 18:02:16,406 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-01 18:02:17,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:02:17,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 23 states and 33 transitions. [2020-12-01 18:02:17,151 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 33 transitions. [2020-12-01 18:02:17,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 18:02:17,153 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:02:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 18:02:17,274 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 18:02:17,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 18:02:17,312 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 18:02:17,656 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 6 iterations. [2020-12-01 18:02:17,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 06:02:17 ImpRootNode [2020-12-01 18:02:17,698 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-12-01 18:02:17,699 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 18:02:17,699 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 18:02:17,699 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 18:02:17,700 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:02:12" (3/4) ... [2020-12-01 18:02:17,702 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 18:02:17,773 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_49a16c6e-fe74-408a-a125-241b84d6c5bb/bin/ukojak/witness.graphml [2020-12-01 18:02:17,773 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 18:02:17,778 INFO L168 Benchmark]: Toolchain (without parser) took 6013.13 ms. Allocated memory was 81.8 MB in the beginning and 121.6 MB in the end (delta: 39.8 MB). Free memory was 49.7 MB in the beginning and 42.7 MB in the end (delta: 7.0 MB). Peak memory consumption was 44.9 MB. Max. memory is 16.1 GB. [2020-12-01 18:02:17,779 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 81.8 MB. Free memory was 55.3 MB in the beginning and 55.3 MB in the end (delta: 24.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 18:02:17,780 INFO L168 Benchmark]: CACSL2BoogieTranslator took 360.42 ms. Allocated memory is still 81.8 MB. Free memory was 49.7 MB in the beginning and 59.6 MB in the end (delta: -9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 18:02:17,781 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.75 ms. Allocated memory is still 81.8 MB. Free memory was 59.6 MB in the beginning and 58.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 18:02:17,782 INFO L168 Benchmark]: Boogie Preprocessor took 38.31 ms. Allocated memory is still 81.8 MB. Free memory was 57.8 MB in the beginning and 56.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 18:02:17,782 INFO L168 Benchmark]: RCFGBuilder took 694.44 ms. Allocated memory was 81.8 MB in the beginning and 100.7 MB in the end (delta: 18.9 MB). Free memory was 56.8 MB in the beginning and 79.2 MB in the end (delta: -22.4 MB). Peak memory consumption was 31.0 MB. Max. memory is 16.1 GB. [2020-12-01 18:02:17,783 INFO L168 Benchmark]: CodeCheck took 4797.28 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 79.2 MB in the beginning and 45.9 MB in the end (delta: 33.3 MB). Peak memory consumption was 54.2 MB. Max. memory is 16.1 GB. [2020-12-01 18:02:17,784 INFO L168 Benchmark]: Witness Printer took 74.74 ms. Allocated memory is still 121.6 MB. Free memory was 45.9 MB in the beginning and 42.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 18:02:17,787 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, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.6s, OverallIterations: 6, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 176 SDtfs, 56 SDslu, 0 SDs, 0 SdLazy, 742 SolverSat, 370 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 459 GetRequests, 373 SyntacticMatches, 6 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2754 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 1344 SizeOfPredicates, 14 NumberOfNonLiveVariables, 447 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 7/13 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: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L13] COND FALSE !(!cond) [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L31] i=0 VAL [N=2] [L31] COND TRUE i