./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/strchr-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a5c399ac-bed1-4a09-a013-281513e2f569/bin/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a5c399ac-bed1-4a09-a013-281513e2f569/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a5c399ac-bed1-4a09-a013-281513e2f569/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a5c399ac-bed1-4a09-a013-281513e2f569/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/strchr-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a5c399ac-bed1-4a09-a013-281513e2f569/bin/ukojak/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a5c399ac-bed1-4a09-a013-281513e2f569/bin/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9856f7645e91c0d9454d45981854535d3bc496b2 ............................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:43:52,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:43:52,203 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:43:52,214 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:43:52,214 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:43:52,215 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:43:52,216 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:43:52,218 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:43:52,220 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:43:52,221 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:43:52,222 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:43:52,223 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:43:52,223 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:43:52,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:43:52,225 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:43:52,226 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:43:52,227 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:43:52,228 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:43:52,230 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:43:52,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:43:52,234 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:43:52,235 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:43:52,236 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:43:52,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:43:52,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:43:52,240 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:43:52,241 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:43:52,242 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:43:52,242 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:43:52,243 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:43:52,243 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:43:52,244 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:43:52,245 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:43:52,251 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:43:52,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:43:52,252 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:43:52,252 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:43:52,253 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:43:52,253 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:43:52,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:43:52,254 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:43:52,255 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a5c399ac-bed1-4a09-a013-281513e2f569/bin/ukojak/config/svcomp-Overflow-64bit-Kojak_Default.epf [2019-11-26 02:43:52,273 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:43:52,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:43:52,274 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:43:52,275 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2019-11-26 02:43:52,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-26 02:43:52,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-26 02:43:52,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:43:52,276 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-26 02:43:52,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:43:52,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:43:52,277 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:43:52,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:43:52,278 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:43:52,278 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-26 02:43:52,278 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:43:52,278 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:43:52,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:43:52,279 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2019-11-26 02:43:52,279 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2019-11-26 02:43:52,279 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:43:52,279 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:43:52,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-11-26 02:43:52,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:43:52,280 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:43:52,280 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:43:52,280 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2019-11-26 02:43:52,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:43:52,281 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:43:52,281 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_a5c399ac-bed1-4a09-a013-281513e2f569/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 ! overflow) ) 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9856f7645e91c0d9454d45981854535d3bc496b2 [2019-11-26 02:43:52,447 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:43:52,457 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:43:52,460 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:43:52,461 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:43:52,461 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:43:52,462 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a5c399ac-bed1-4a09-a013-281513e2f569/bin/ukojak/../../sv-benchmarks/c/termination-crafted-lit/strchr-2.c [2019-11-26 02:43:52,512 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a5c399ac-bed1-4a09-a013-281513e2f569/bin/ukojak/data/1a80bd4b0/44f0104453524fc1a1f0fa927d87f103/FLAGe66f9c2d8 [2019-11-26 02:43:52,863 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:43:52,865 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a5c399ac-bed1-4a09-a013-281513e2f569/sv-benchmarks/c/termination-crafted-lit/strchr-2.c [2019-11-26 02:43:52,872 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a5c399ac-bed1-4a09-a013-281513e2f569/bin/ukojak/data/1a80bd4b0/44f0104453524fc1a1f0fa927d87f103/FLAGe66f9c2d8 [2019-11-26 02:43:53,239 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a5c399ac-bed1-4a09-a013-281513e2f569/bin/ukojak/data/1a80bd4b0/44f0104453524fc1a1f0fa927d87f103 [2019-11-26 02:43:53,244 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:43:53,247 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:43:53,249 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:43:53,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:43:53,254 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:43:53,255 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:43:53" (1/1) ... [2019-11-26 02:43:53,258 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6744b18c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:43:53, skipping insertion in model container [2019-11-26 02:43:53,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:43:53" (1/1) ... [2019-11-26 02:43:53,266 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:43:53,283 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:43:53,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:43:53,478 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:43:53,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:43:53,573 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:43:53,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:43:53 WrapperNode [2019-11-26 02:43:53,574 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:43:53,575 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:43:53,575 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:43:53,575 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:43:53,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:43:53" (1/1) ... [2019-11-26 02:43:53,588 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:43:53" (1/1) ... [2019-11-26 02:43:53,605 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:43:53,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:43:53,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:43:53,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:43:53,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:43:53" (1/1) ... [2019-11-26 02:43:53,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:43:53" (1/1) ... [2019-11-26 02:43:53,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:43:53" (1/1) ... [2019-11-26 02:43:53,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:43:53" (1/1) ... [2019-11-26 02:43:53,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:43:53" (1/1) ... [2019-11-26 02:43:53,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:43:53" (1/1) ... [2019-11-26 02:43:53,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:43:53" (1/1) ... [2019-11-26 02:43:53,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:43:53,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:43:53,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:43:53,627 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:43:53,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:43:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a5c399ac-bed1-4a09-a013-281513e2f569/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 [2019-11-26 02:43:53,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:43:53,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-26 02:43:53,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:43:53,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:43:53,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-26 02:43:54,139 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:43:54,139 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-26 02:43:54,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:43:54 BoogieIcfgContainer [2019-11-26 02:43:54,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:43:54,141 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2019-11-26 02:43:54,141 INFO L271 PluginConnector]: Initializing CodeCheck... [2019-11-26 02:43:54,154 INFO L275 PluginConnector]: CodeCheck initialized [2019-11-26 02:43:54,155 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:43:54" (1/1) ... [2019-11-26 02:43:54,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:43:54,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-26 02:43:54,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 13 states and 14 transitions. [2019-11-26 02:43:54,193 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2019-11-26 02:43:54,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-11-26 02:43:54,196 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-26 02:43:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:43:54,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:43:54,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-26 02:43:54,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 12 states and 13 transitions. [2019-11-26 02:43:54,337 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2019-11-26 02:43:54,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-26 02:43:54,337 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-26 02:43:54,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:43:54,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:43:54,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-26 02:43:54,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 11 states and 12 transitions. [2019-11-26 02:43:54,442 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2019-11-26 02:43:54,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-26 02:43:54,442 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-26 02:43:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:43:54,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:43:54,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-26 02:43:54,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 10 states and 11 transitions. [2019-11-26 02:43:54,478 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-11-26 02:43:54,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-26 02:43:54,479 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-26 02:43:54,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:43:54,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:43:54,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-26 02:43:54,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 9 states and 10 transitions. [2019-11-26 02:43:54,706 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2019-11-26 02:43:54,706 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:43:54,706 WARN L425 CodeCheckObserver]: This Program is SAFE, Check terminated with 5 iterations. [2019-11-26 02:43:54,713 INFO L765 CodeCheckObserver]: All specifications hold 4 specifications checked. All of them hold [2019-11-26 02:43:54,735 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2019-11-26 02:43:54,738 INFO L569 CodeCheckObserver]: Invariant with dag size 3 [2019-11-26 02:43:54,742 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2019-11-26 02:43:54,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 26.11 02:43:54 ImpRootNode [2019-11-26 02:43:54,742 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2019-11-26 02:43:54,743 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:43:54,743 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:43:54,743 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:43:54,744 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:43:54" (3/4) ... [2019-11-26 02:43:54,746 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:43:54,756 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-11-26 02:43:54,756 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-26 02:43:54,756 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-26 02:43:54,801 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a5c399ac-bed1-4a09-a013-281513e2f569/bin/ukojak/witness.graphml [2019-11-26 02:43:54,801 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:43:54,803 INFO L168 Benchmark]: Toolchain (without parser) took 1557.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -107.3 MB). Peak memory consumption was 32.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:43:54,804 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:43:54,804 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -183.4 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:43:54,805 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.16 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:43:54,805 INFO L168 Benchmark]: Boogie Preprocessor took 21.10 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:43:54,806 INFO L168 Benchmark]: RCFGBuilder took 513.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:43:54,806 INFO L168 Benchmark]: CodeCheck took 601.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:43:54,807 INFO L168 Benchmark]: Witness Printer took 58.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:43:54,809 INFO L335 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, 13 locations, 4 error locations. Result: SAFE, OverallTime: 0.5s, OverallIterations: 5, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 0 SDtfs, 42 SDslu, 0 SDs, 0 SdLazy, 146 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 92 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 <= length - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 325.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -183.4 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.16 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.10 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 513.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. * CodeCheck took 601.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 11.5 GB. * Witness Printer took 58.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be correct! Received shutdown request...