./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.20.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_b513bd86-b70d-4d29-adba-775fd1908da0/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b513bd86-b70d-4d29-adba-775fd1908da0/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b513bd86-b70d-4d29-adba-775fd1908da0/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b513bd86-b70d-4d29-adba-775fd1908da0/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.20.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b513bd86-b70d-4d29-adba-775fd1908da0/bin/ukojak/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b513bd86-b70d-4d29-adba-775fd1908da0/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 ef49038d2ab74dd97b86bf2af92359124ff338d3 .............................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 18:19:29,503 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 18:19:29,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 18:19:29,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 18:19:29,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 18:19:29,603 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 18:19:29,605 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 18:19:29,609 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 18:19:29,612 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 18:19:29,614 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 18:19:29,616 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 18:19:29,618 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 18:19:29,619 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 18:19:29,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 18:19:29,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 18:19:29,625 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 18:19:29,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 18:19:29,628 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 18:19:29,631 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 18:19:29,634 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 18:19:29,637 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 18:19:29,640 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 18:19:29,642 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 18:19:29,643 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 18:19:29,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 18:19:29,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 18:19:29,650 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 18:19:29,652 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 18:19:29,653 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 18:19:29,655 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 18:19:29,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 18:19:29,657 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 18:19:29,658 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 18:19:29,660 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 18:19:29,662 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 18:19:29,663 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 18:19:29,664 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 18:19:29,665 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 18:19:29,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 18:19:29,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 18:19:29,668 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 18:19:29,671 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b513bd86-b70d-4d29-adba-775fd1908da0/bin/ukojak/config/svcomp-Overflow-64bit-Kojak_Default.epf [2020-12-01 18:19:29,725 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 18:19:29,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 18:19:29,729 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-01 18:19:29,729 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-12-01 18:19:29,730 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 18:19:29,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 18:19:29,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 18:19:29,731 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-01 18:19:29,732 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 18:19:29,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 18:19:29,733 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 18:19:29,734 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 18:19:29,734 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 18:19:29,735 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-12-01 18:19:29,735 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 18:19:29,735 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 18:19:29,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 18:19:29,736 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-12-01 18:19:29,736 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-12-01 18:19:29,737 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 18:19:29,737 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 18:19:29,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-01 18:19:29,738 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 18:19:29,738 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 18:19:29,738 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 18:19:29,739 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-12-01 18:19:29,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 18:19:29,739 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 18:19:29,740 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_b513bd86-b70d-4d29-adba-775fd1908da0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b513bd86-b70d-4d29-adba-775fd1908da0/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef49038d2ab74dd97b86bf2af92359124ff338d3 [2020-12-01 18:19:30,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 18:19:30,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 18:19:30,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 18:19:30,221 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 18:19:30,223 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 18:19:30,224 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b513bd86-b70d-4d29-adba-775fd1908da0/bin/ukojak/../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.20.c [2020-12-01 18:19:30,329 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b513bd86-b70d-4d29-adba-775fd1908da0/bin/ukojak/data/4e516db08/18c85519254b49cf9c3a87ece3f794a6/FLAG3a3feedc8 [2020-12-01 18:19:30,962 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 18:19:30,963 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b513bd86-b70d-4d29-adba-775fd1908da0/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.20.c [2020-12-01 18:19:30,978 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b513bd86-b70d-4d29-adba-775fd1908da0/bin/ukojak/data/4e516db08/18c85519254b49cf9c3a87ece3f794a6/FLAG3a3feedc8 [2020-12-01 18:19:31,320 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b513bd86-b70d-4d29-adba-775fd1908da0/bin/ukojak/data/4e516db08/18c85519254b49cf9c3a87ece3f794a6 [2020-12-01 18:19:31,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 18:19:31,326 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 18:19:31,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 18:19:31,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 18:19:31,333 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 18:19:31,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 06:19:31" (1/1) ... [2020-12-01 18:19:31,336 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11bbc526 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:19:31, skipping insertion in model container [2020-12-01 18:19:31,337 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 06:19:31" (1/1) ... [2020-12-01 18:19:31,346 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 18:19:31,361 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 18:19:31,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 18:19:31,594 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 18:19:31,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 18:19:31,633 INFO L208 MainTranslator]: Completed translation [2020-12-01 18:19:31,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:19:31 WrapperNode [2020-12-01 18:19:31,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 18:19:31,635 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 18:19:31,636 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 18:19:31,636 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 18:19:31,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:19:31" (1/1) ... [2020-12-01 18:19:31,652 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:19:31" (1/1) ... [2020-12-01 18:19:31,673 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 18:19:31,674 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 18:19:31,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 18:19:31,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 18:19:31,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:19:31" (1/1) ... [2020-12-01 18:19:31,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:19:31" (1/1) ... [2020-12-01 18:19:31,687 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:19:31" (1/1) ... [2020-12-01 18:19:31,687 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:19:31" (1/1) ... [2020-12-01 18:19:31,690 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:19:31" (1/1) ... [2020-12-01 18:19:31,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:19:31" (1/1) ... [2020-12-01 18:19:31,696 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:19:31" (1/1) ... [2020-12-01 18:19:31,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 18:19:31,699 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 18:19:31,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 18:19:31,700 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 18:19:31,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:19:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b513bd86-b70d-4d29-adba-775fd1908da0/bin/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-01 18:19:31,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 18:19:31,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 18:19:32,046 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 18:19:32,046 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-12-01 18:19:32,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:19:32 BoogieIcfgContainer [2020-12-01 18:19:32,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 18:19:32,051 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-12-01 18:19:32,051 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-12-01 18:19:32,065 INFO L275 PluginConnector]: CodeCheck initialized [2020-12-01 18:19:32,074 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:19:32" (1/1) ... [2020-12-01 18:19:32,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 18:19:32,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:19:32,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2020-12-01 18:19:32,158 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2020-12-01 18:19:32,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-01 18:19:32,162 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:19:32,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:19:32,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 18:19:32,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:19:32,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 9 states and 12 transitions. [2020-12-01 18:19:32,506 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 12 transitions. [2020-12-01 18:19:32,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-01 18:19:32,507 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:19:32,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:19:32,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 18:19:32,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:19:32,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 8 states and 11 transitions. [2020-12-01 18:19:32,667 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 11 transitions. [2020-12-01 18:19:32,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-01 18:19:32,668 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:19:32,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:19:32,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 18:19:32,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:19:32,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2020-12-01 18:19:32,827 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2020-12-01 18:19:32,828 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 18:19:32,828 WARN L425 CodeCheckObserver]: This Program is SAFE, Check terminated with 4 iterations. [2020-12-01 18:19:32,837 INFO L765 CodeCheckObserver]: All specifications hold 2 specifications checked. All of them hold [2020-12-01 18:19:32,865 INFO L569 CodeCheckObserver]: Invariant with dag size 3 [2020-12-01 18:19:32,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 06:19:32 ImpRootNode [2020-12-01 18:19:32,879 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-12-01 18:19:32,880 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 18:19:32,881 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 18:19:32,881 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 18:19:32,882 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:19:32" (3/4) ... [2020-12-01 18:19:32,886 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 18:19:32,899 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-12-01 18:19:32,899 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-01 18:19:32,900 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 18:19:32,951 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b513bd86-b70d-4d29-adba-775fd1908da0/bin/ukojak/witness.graphml [2020-12-01 18:19:32,951 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 18:19:32,954 INFO L168 Benchmark]: Toolchain (without parser) took 1626.02 ms. Allocated memory was 75.5 MB in the beginning and 96.5 MB in the end (delta: 21.0 MB). Free memory was 43.5 MB in the beginning and 49.6 MB in the end (delta: -6.2 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. [2020-12-01 18:19:32,955 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 75.5 MB. Free memory was 56.0 MB in the beginning and 55.9 MB in the end (delta: 26.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 18:19:32,957 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.11 ms. Allocated memory was 75.5 MB in the beginning and 96.5 MB in the end (delta: 21.0 MB). Free memory was 43.3 MB in the beginning and 74.9 MB in the end (delta: -31.6 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2020-12-01 18:19:32,958 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.13 ms. Allocated memory is still 96.5 MB. Free memory was 74.9 MB in the beginning and 73.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 18:19:32,959 INFO L168 Benchmark]: Boogie Preprocessor took 24.10 ms. Allocated memory is still 96.5 MB. Free memory was 73.7 MB in the beginning and 72.8 MB in the end (delta: 882.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 18:19:32,960 INFO L168 Benchmark]: RCFGBuilder took 350.30 ms. Allocated memory is still 96.5 MB. Free memory was 72.8 MB in the beginning and 62.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 18:19:32,961 INFO L168 Benchmark]: CodeCheck took 828.77 ms. Allocated memory is still 96.5 MB. Free memory was 62.6 MB in the beginning and 51.7 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. [2020-12-01 18:19:32,962 INFO L168 Benchmark]: Witness Printer took 70.83 ms. Allocated memory is still 96.5 MB. Free memory was 51.7 MB in the beginning and 49.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 18:19:32,967 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, 7 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.7s, OverallIterations: 4, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 SDtfs, 16 SDslu, 0 SDs, 0 SdLazy, 106 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 88 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 154 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 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: 27]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 27]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: x <= 2147483647 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 75.5 MB. Free memory was 56.0 MB in the beginning and 55.9 MB in the end (delta: 26.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 306.11 ms. Allocated memory was 75.5 MB in the beginning and 96.5 MB in the end (delta: 21.0 MB). Free memory was 43.3 MB in the beginning and 74.9 MB in the end (delta: -31.6 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.13 ms. Allocated memory is still 96.5 MB. Free memory was 74.9 MB in the beginning and 73.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.10 ms. Allocated memory is still 96.5 MB. Free memory was 73.7 MB in the beginning and 72.8 MB in the end (delta: 882.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 350.30 ms. Allocated memory is still 96.5 MB. Free memory was 72.8 MB in the beginning and 62.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * CodeCheck took 828.77 ms. Allocated memory is still 96.5 MB. Free memory was 62.6 MB in the beginning and 51.7 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. * Witness Printer took 70.83 ms. Allocated memory is still 96.5 MB. Free memory was 51.7 MB in the beginning and 49.6 MB in the end (delta: 2.0 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...