./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-easy1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1d1e2b5e-c113-471c-8257-dda36cf95e5c/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1d1e2b5e-c113-471c-8257-dda36cf95e5c/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1d1e2b5e-c113-471c-8257-dda36cf95e5c/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1d1e2b5e-c113-471c-8257-dda36cf95e5c/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-easy1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1d1e2b5e-c113-471c-8257-dda36cf95e5c/bin/ukojak/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1d1e2b5e-c113-471c-8257-dda36cf95e5c/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 8fcad1cc5c987e49a6afac90dd5119b31f7d391b .............................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-03 11:06:48,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 11:06:48,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 11:06:48,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 11:06:48,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 11:06:48,428 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 11:06:48,440 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 11:06:48,444 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 11:06:48,452 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 11:06:48,458 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 11:06:48,459 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 11:06:48,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 11:06:48,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 11:06:48,465 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 11:06:48,467 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 11:06:48,469 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 11:06:48,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 11:06:48,474 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 11:06:48,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 11:06:48,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 11:06:48,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 11:06:48,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 11:06:48,491 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 11:06:48,492 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 11:06:48,500 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 11:06:48,501 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 11:06:48,501 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 11:06:48,503 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 11:06:48,504 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 11:06:48,505 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 11:06:48,506 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 11:06:48,507 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 11:06:48,509 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 11:06:48,510 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 11:06:48,511 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 11:06:48,511 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 11:06:48,512 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 11:06:48,512 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 11:06:48,513 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 11:06:48,514 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 11:06:48,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 11:06:48,517 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1d1e2b5e-c113-471c-8257-dda36cf95e5c/bin/ukojak/config/svcomp-Overflow-64bit-Kojak_Default.epf [2020-12-03 11:06:48,555 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 11:06:48,555 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 11:06:48,556 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-03 11:06:48,557 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-12-03 11:06:48,557 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-03 11:06:48,558 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-03 11:06:48,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 11:06:48,558 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-03 11:06:48,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-03 11:06:48,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 11:06:48,560 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-03 11:06:48,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 11:06:48,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-03 11:06:48,561 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-12-03 11:06:48,561 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-03 11:06:48,561 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 11:06:48,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-03 11:06:48,562 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-12-03 11:06:48,562 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-12-03 11:06:48,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 11:06:48,562 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-03 11:06:48,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-03 11:06:48,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 11:06:48,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 11:06:48,563 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-03 11:06:48,563 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-12-03 11:06:48,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-03 11:06:48,564 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-03 11:06:48,564 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_1d1e2b5e-c113-471c-8257-dda36cf95e5c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1d1e2b5e-c113-471c-8257-dda36cf95e5c/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fcad1cc5c987e49a6afac90dd5119b31f7d391b [2020-12-03 11:06:48,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 11:06:48,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 11:06:48,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 11:06:48,875 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 11:06:48,876 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 11:06:48,877 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1d1e2b5e-c113-471c-8257-dda36cf95e5c/bin/ukojak/../../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-easy1.c [2020-12-03 11:06:48,956 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1d1e2b5e-c113-471c-8257-dda36cf95e5c/bin/ukojak/data/aed77df5b/0811b6ebcebd4469932e3fcb74938333/FLAGb1fa56b23 [2020-12-03 11:06:49,443 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 11:06:49,444 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1d1e2b5e-c113-471c-8257-dda36cf95e5c/sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-easy1.c [2020-12-03 11:06:49,451 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1d1e2b5e-c113-471c-8257-dda36cf95e5c/bin/ukojak/data/aed77df5b/0811b6ebcebd4469932e3fcb74938333/FLAGb1fa56b23 [2020-12-03 11:06:49,842 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1d1e2b5e-c113-471c-8257-dda36cf95e5c/bin/ukojak/data/aed77df5b/0811b6ebcebd4469932e3fcb74938333 [2020-12-03 11:06:49,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 11:06:49,846 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 11:06:49,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 11:06:49,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 11:06:49,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 11:06:49,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 11:06:49" (1/1) ... [2020-12-03 11:06:49,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27b158a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 11:06:49, skipping insertion in model container [2020-12-03 11:06:49,871 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 11:06:49" (1/1) ... [2020-12-03 11:06:49,879 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 11:06:49,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 11:06:50,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 11:06:50,092 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 11:06:50,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 11:06:50,140 INFO L208 MainTranslator]: Completed translation [2020-12-03 11:06:50,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 11:06:50 WrapperNode [2020-12-03 11:06:50,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 11:06:50,144 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 11:06:50,144 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 11:06:50,145 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 11:06:50,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 11:06:50" (1/1) ... [2020-12-03 11:06:50,167 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 11:06:50" (1/1) ... [2020-12-03 11:06:50,185 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 11:06:50,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 11:06:50,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 11:06:50,189 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 11:06:50,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 11:06:50" (1/1) ... [2020-12-03 11:06:50,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 11:06:50" (1/1) ... [2020-12-03 11:06:50,199 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 11:06:50" (1/1) ... [2020-12-03 11:06:50,200 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 11:06:50" (1/1) ... [2020-12-03 11:06:50,202 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 11:06:50" (1/1) ... [2020-12-03 11:06:50,210 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 11:06:50" (1/1) ... [2020-12-03 11:06:50,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 11:06:50" (1/1) ... [2020-12-03 11:06:50,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 11:06:50,214 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 11:06:50,214 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 11:06:50,214 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 11:06:50,215 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 11:06:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1d1e2b5e-c113-471c-8257-dda36cf95e5c/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 [2020-12-03 11:06:50,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 11:06:50,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 11:06:50,592 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 11:06:50,593 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-12-03 11:06:50,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 11:06:50 BoogieIcfgContainer [2020-12-03 11:06:50,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 11:06:50,598 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-12-03 11:06:50,598 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-12-03 11:06:50,609 INFO L275 PluginConnector]: CodeCheck initialized [2020-12-03 11:06:50,610 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 11:06:50" (1/1) ... [2020-12-03 11:06:50,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 11:06:50,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-03 11:06:50,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 12 states and 13 transitions. [2020-12-03 11:06:50,668 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-12-03 11:06:50,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-03 11:06:50,670 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-03 11:06:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 11:06:50,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 11:06:50,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-03 11:06:50,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 15 states and 19 transitions. [2020-12-03 11:06:50,934 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2020-12-03 11:06:50,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-03 11:06:50,934 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-03 11:06:50,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 11:06:50,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 11:06:51,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-03 11:06:51,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 16 states and 20 transitions. [2020-12-03 11:06:51,013 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2020-12-03 11:06:51,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-03 11:06:51,014 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-03 11:06:51,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 11:06:51,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 11:06:51,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-03 11:06:51,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 20 states and 27 transitions. [2020-12-03 11:06:51,143 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 27 transitions. [2020-12-03 11:06:51,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-03 11:06:51,146 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-03 11:06:51,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 11:06:51,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 11:06:51,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-03 11:06:51,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 14 states and 16 transitions. [2020-12-03 11:06:51,202 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-12-03 11:06:51,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-03 11:06:51,203 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-03 11:06:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 11:06:51,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-03 11:06:51,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-03 11:06:51,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 13 states and 15 transitions. [2020-12-03 11:06:51,316 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2020-12-03 11:06:51,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-03 11:06:51,316 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-03 11:06:51,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 11:06:51,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 11:06:51,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-03 11:06:51,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 16 states and 20 transitions. [2020-12-03 11:06:51,859 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2020-12-03 11:06:51,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-03 11:06:51,860 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-03 11:06:51,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 11:06:51,891 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-03 11:06:51,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-03 11:06:51,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 15 states and 19 transitions. [2020-12-03 11:06:51,916 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2020-12-03 11:06:51,917 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-03 11:06:51,917 WARN L425 CodeCheckObserver]: This Program is SAFE, Check terminated with 8 iterations. [2020-12-03 11:06:51,924 INFO L765 CodeCheckObserver]: All specifications hold 4 specifications checked. All of them hold [2020-12-03 11:06:52,027 INFO L569 CodeCheckObserver]: Invariant with dag size 3 [2020-12-03 11:06:52,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 03.12 11:06:52 ImpRootNode [2020-12-03 11:06:52,054 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-12-03 11:06:52,056 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 11:06:52,056 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 11:06:52,056 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 11:06:52,057 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 11:06:50" (3/4) ... [2020-12-03 11:06:52,060 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-03 11:06:52,074 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-12-03 11:06:52,074 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-03 11:06:52,075 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-03 11:06:52,110 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1d1e2b5e-c113-471c-8257-dda36cf95e5c/bin/ukojak/witness.graphml [2020-12-03 11:06:52,110 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 11:06:52,112 INFO L168 Benchmark]: Toolchain (without parser) took 2265.09 ms. Allocated memory was 140.5 MB in the beginning and 169.9 MB in the end (delta: 29.4 MB). Free memory was 111.0 MB in the beginning and 144.6 MB in the end (delta: -33.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 11:06:52,112 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 83.9 MB. Free memory is still 44.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 11:06:52,113 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.15 ms. Allocated memory is still 140.5 MB. Free memory was 111.0 MB in the beginning and 117.8 MB in the end (delta: -6.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-03 11:06:52,114 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.26 ms. Allocated memory is still 140.5 MB. Free memory was 117.8 MB in the beginning and 116.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 11:06:52,114 INFO L168 Benchmark]: Boogie Preprocessor took 23.33 ms. Allocated memory is still 140.5 MB. Free memory was 116.7 MB in the beginning and 115.8 MB in the end (delta: 830.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 11:06:52,115 INFO L168 Benchmark]: RCFGBuilder took 383.02 ms. Allocated memory is still 140.5 MB. Free memory was 115.8 MB in the beginning and 105.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-03 11:06:52,116 INFO L168 Benchmark]: CodeCheck took 1456.84 ms. Allocated memory was 140.5 MB in the beginning and 169.9 MB in the end (delta: 29.4 MB). Free memory was 105.5 MB in the beginning and 146.6 MB in the end (delta: -41.2 MB). Peak memory consumption was 47.5 MB. Max. memory is 16.1 GB. [2020-12-03 11:06:52,116 INFO L168 Benchmark]: Witness Printer took 54.41 ms. Allocated memory is still 169.9 MB. Free memory was 146.6 MB in the beginning and 144.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 11:06:52,120 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, 12 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 8, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 256 SDtfs, 724 SDslu, 530 SDs, 0 SdLazy, 1916 SolverSat, 486 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 336 GetRequests, 303 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 437 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 8/8 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: 16]: 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: 16]: 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: 14]: Loop Invariant Derived loop invariant: 0 <= x * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 83.9 MB. Free memory is still 44.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 285.15 ms. Allocated memory is still 140.5 MB. Free memory was 111.0 MB in the beginning and 117.8 MB in the end (delta: -6.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.26 ms. Allocated memory is still 140.5 MB. Free memory was 117.8 MB in the beginning and 116.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.33 ms. Allocated memory is still 140.5 MB. Free memory was 116.7 MB in the beginning and 115.8 MB in the end (delta: 830.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 383.02 ms. Allocated memory is still 140.5 MB. Free memory was 115.8 MB in the beginning and 105.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * CodeCheck took 1456.84 ms. Allocated memory was 140.5 MB in the beginning and 169.9 MB in the end (delta: 29.4 MB). Free memory was 105.5 MB in the beginning and 146.6 MB in the end (delta: -41.2 MB). Peak memory consumption was 47.5 MB. Max. memory is 16.1 GB. * Witness Printer took 54.41 ms. Allocated memory is still 169.9 MB. Free memory was 146.6 MB in the beginning and 144.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be correct! Received shutdown request...