./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/nsqm-iff.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_6f28e4a8-ce9e-4f86-97c1-8b7b2fbe0deb/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6f28e4a8-ce9e-4f86-97c1-8b7b2fbe0deb/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6f28e4a8-ce9e-4f86-97c1-8b7b2fbe0deb/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6f28e4a8-ce9e-4f86-97c1-8b7b2fbe0deb/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/array-fpi/nsqm-iff.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6f28e4a8-ce9e-4f86-97c1-8b7b2fbe0deb/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6f28e4a8-ce9e-4f86-97c1-8b7b2fbe0deb/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 4e11665f1fb34385e5a13a8ae204131e2123894d ............................................................................................................................................................................................................................................................ 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 04:39:00,976 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 04:39:00,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 04:39:01,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 04:39:01,053 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 04:39:01,054 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 04:39:01,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 04:39:01,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 04:39:01,061 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 04:39:01,062 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 04:39:01,064 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 04:39:01,065 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 04:39:01,066 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 04:39:01,067 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 04:39:01,069 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 04:39:01,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 04:39:01,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 04:39:01,073 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 04:39:01,076 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 04:39:01,081 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 04:39:01,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 04:39:01,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 04:39:01,097 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 04:39:01,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 04:39:01,109 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 04:39:01,109 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 04:39:01,110 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 04:39:01,111 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 04:39:01,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 04:39:01,121 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 04:39:01,122 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 04:39:01,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 04:39:01,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 04:39:01,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 04:39:01,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 04:39:01,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 04:39:01,130 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 04:39:01,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 04:39:01,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 04:39:01,132 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 04:39:01,133 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 04:39:01,134 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6f28e4a8-ce9e-4f86-97c1-8b7b2fbe0deb/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-11-28 04:39:01,179 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 04:39:01,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 04:39:01,181 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 04:39:01,182 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-11-28 04:39:01,182 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 04:39:01,183 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 04:39:01,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 04:39:01,183 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 04:39:01,183 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 04:39:01,184 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 04:39:01,185 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 04:39:01,185 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 04:39:01,185 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 04:39:01,186 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 04:39:01,186 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 04:39:01,186 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 04:39:01,186 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 04:39:01,187 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 04:39:01,187 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-28 04:39:01,187 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-28 04:39:01,187 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 04:39:01,188 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 04:39:01,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-28 04:39:01,188 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 04:39:01,189 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 04:39:01,189 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 04:39:01,189 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-28 04:39:01,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 04:39:01,190 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 04:39:01,192 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_6f28e4a8-ce9e-4f86-97c1-8b7b2fbe0deb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6f28e4a8-ce9e-4f86-97c1-8b7b2fbe0deb/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e11665f1fb34385e5a13a8ae204131e2123894d [2020-11-28 04:39:01,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 04:39:01,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 04:39:01,491 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 04:39:01,492 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 04:39:01,494 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 04:39:01,495 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6f28e4a8-ce9e-4f86-97c1-8b7b2fbe0deb/bin/ukojak/../../sv-benchmarks/c/array-fpi/nsqm-iff.c [2020-11-28 04:39:01,581 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6f28e4a8-ce9e-4f86-97c1-8b7b2fbe0deb/bin/ukojak/data/fc58fc071/8b96aade69eb478c8b9a5fb4b37d286b/FLAG2bbafff89 [2020-11-28 04:39:02,037 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 04:39:02,038 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6f28e4a8-ce9e-4f86-97c1-8b7b2fbe0deb/sv-benchmarks/c/array-fpi/nsqm-iff.c [2020-11-28 04:39:02,050 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6f28e4a8-ce9e-4f86-97c1-8b7b2fbe0deb/bin/ukojak/data/fc58fc071/8b96aade69eb478c8b9a5fb4b37d286b/FLAG2bbafff89 [2020-11-28 04:39:02,409 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6f28e4a8-ce9e-4f86-97c1-8b7b2fbe0deb/bin/ukojak/data/fc58fc071/8b96aade69eb478c8b9a5fb4b37d286b [2020-11-28 04:39:02,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 04:39:02,416 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 04:39:02,420 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 04:39:02,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 04:39:02,424 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 04:39:02,425 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:39:02" (1/1) ... [2020-11-28 04:39:02,427 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a6761fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:02, skipping insertion in model container [2020-11-28 04:39:02,428 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:39:02" (1/1) ... [2020-11-28 04:39:02,435 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 04:39:02,456 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 04:39:02,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:39:02,705 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 04:39:02,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:39:02,740 INFO L208 MainTranslator]: Completed translation [2020-11-28 04:39:02,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:02 WrapperNode [2020-11-28 04:39:02,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 04:39:02,742 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 04:39:02,742 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 04:39:02,742 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 04:39:02,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:02" (1/1) ... [2020-11-28 04:39:02,757 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:02" (1/1) ... [2020-11-28 04:39:02,778 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 04:39:02,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 04:39:02,779 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 04:39:02,779 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 04:39:02,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:02" (1/1) ... [2020-11-28 04:39:02,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:02" (1/1) ... [2020-11-28 04:39:02,790 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:02" (1/1) ... [2020-11-28 04:39:02,790 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:02" (1/1) ... [2020-11-28 04:39:02,796 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:02" (1/1) ... [2020-11-28 04:39:02,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:02" (1/1) ... [2020-11-28 04:39:02,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:02" (1/1) ... [2020-11-28 04:39:02,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 04:39:02,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 04:39:02,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 04:39:02,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 04:39:02,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6f28e4a8-ce9e-4f86-97c1-8b7b2fbe0deb/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 04:39:02,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 04:39:02,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 04:39:02,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 04:39:02,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 04:39:02,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 04:39:02,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 04:39:02,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 04:39:03,394 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 04:39:03,394 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-11-28 04:39:03,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:39:03 BoogieIcfgContainer [2020-11-28 04:39:03,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 04:39:03,398 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-28 04:39:03,398 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-28 04:39:03,408 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-28 04:39:03,409 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:39:03" (1/1) ... [2020-11-28 04:39:03,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 04:39:03,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:39:03,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 11 states and 15 transitions. [2020-11-28 04:39:03,477 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 15 transitions. [2020-11-28 04:39:03,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 04:39:03,479 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:39:03,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:39:03,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 04:39:03,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 04:39:03,736 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 04:39:03,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:39:03,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 12 states and 16 transitions. [2020-11-28 04:39:03,774 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 16 transitions. [2020-11-28 04:39:03,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 04:39:03,775 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:39:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:39:03,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 04:39:03,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 04:39:03,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 04:39:03,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:39:03,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 13 states and 18 transitions. [2020-11-28 04:39:03,944 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 18 transitions. [2020-11-28 04:39:03,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 04:39:03,944 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:39:04,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:39:04,025 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:39:04,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:39:04,048 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:39:04,074 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 3 iterations. [2020-11-28 04:39:04,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 28.11 04:39:04 ImpRootNode [2020-11-28 04:39:04,107 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-28 04:39:04,108 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 04:39:04,108 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 04:39:04,109 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 04:39:04,109 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:39:03" (3/4) ... [2020-11-28 04:39:04,112 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 04:39:04,187 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6f28e4a8-ce9e-4f86-97c1-8b7b2fbe0deb/bin/ukojak/witness.graphml [2020-11-28 04:39:04,191 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 04:39:04,193 INFO L168 Benchmark]: Toolchain (without parser) took 1776.60 ms. Allocated memory was 83.9 MB in the beginning and 102.8 MB in the end (delta: 18.9 MB). Free memory was 53.5 MB in the beginning and 62.7 MB in the end (delta: -9.2 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. [2020-11-28 04:39:04,194 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 83.9 MB. Free memory was 40.5 MB in the beginning and 40.5 MB in the end (delta: 34.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:39:04,195 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.21 ms. Allocated memory was 83.9 MB in the beginning and 102.8 MB in the end (delta: 18.9 MB). Free memory was 53.5 MB in the beginning and 79.0 MB in the end (delta: -25.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 04:39:04,195 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.58 ms. Allocated memory is still 102.8 MB. Free memory was 79.0 MB in the beginning and 77.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:39:04,196 INFO L168 Benchmark]: Boogie Preprocessor took 25.53 ms. Allocated memory is still 102.8 MB. Free memory was 77.3 MB in the beginning and 76.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:39:04,197 INFO L168 Benchmark]: RCFGBuilder took 591.61 ms. Allocated memory is still 102.8 MB. Free memory was 76.0 MB in the beginning and 75.7 MB in the end (delta: 267.3 kB). Peak memory consumption was 24.8 MB. Max. memory is 16.1 GB. [2020-11-28 04:39:04,198 INFO L168 Benchmark]: CodeCheck took 709.61 ms. Allocated memory is still 102.8 MB. Free memory was 75.7 MB in the beginning and 64.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. [2020-11-28 04:39:04,198 INFO L168 Benchmark]: Witness Printer took 83.36 ms. Allocated memory is still 102.8 MB. Free memory was 64.8 MB in the beginning and 62.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:39:04,205 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: 0.6s, OverallIterations: 3, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 4 SDslu, 0 SDs, 0 SdLazy, 32 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 120 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 191 SizeOfPredicates, 2 NumberOfNonLiveVariables, 162 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 1/1 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=1] [L31] COND TRUE i