./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_56abba09-691c-44a4-a851-e9d597c6e486/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_56abba09-691c-44a4-a851-e9d597c6e486/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_56abba09-691c-44a4-a851-e9d597c6e486/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_56abba09-691c-44a4-a851-e9d597c6e486/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_56abba09-691c-44a4-a851-e9d597c6e486/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_56abba09-691c-44a4-a851-e9d597c6e486/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1b479b889a3fb03988d45e8dd23af320d3b36d51 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 15:59:31,318 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:59:31,321 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:59:31,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:59:31,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:59:31,372 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:59:31,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:59:31,379 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:59:31,383 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:59:31,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:59:31,387 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:59:31,389 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:59:31,390 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:59:31,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:59:31,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:59:31,397 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:59:31,399 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:59:31,401 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:59:31,404 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:59:31,408 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:59:31,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:59:31,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:59:31,416 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:59:31,418 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:59:31,423 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:59:31,424 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:59:31,424 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:59:31,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:59:31,433 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:59:31,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:59:31,435 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:59:31,437 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:59:31,438 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:59:31,439 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:59:31,441 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:59:31,442 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:59:31,443 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:59:31,444 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:59:31,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:59:31,446 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:59:31,447 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:59:31,454 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_56abba09-691c-44a4-a851-e9d597c6e486/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 15:59:31,514 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:59:31,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:59:31,517 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:59:31,518 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:59:31,518 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:59:31,518 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:59:31,519 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:59:31,519 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:59:31,519 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:59:31,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:59:31,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:59:31,522 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:59:31,522 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:59:31,522 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:59:31,523 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:59:31,523 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:59:31,523 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:59:31,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:59:31,524 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:59:31,524 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:59:31,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:59:31,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:59:31,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:59:31,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:59:31,526 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:59:31,526 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:59:31,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:59:31,538 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:59:31,538 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:59:31,538 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_56abba09-691c-44a4-a851-e9d597c6e486/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_56abba09-691c-44a4-a851-e9d597c6e486/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b479b889a3fb03988d45e8dd23af320d3b36d51 [2020-12-01 15:59:31,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:59:32,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:59:32,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:59:32,027 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:59:32,029 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:59:32,031 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_56abba09-691c-44a4-a851-e9d597c6e486/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound1.c [2020-12-01 15:59:32,135 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_56abba09-691c-44a4-a851-e9d597c6e486/bin/uautomizer/data/198fb3937/ad43cd1bb0844a6cb5ca198ef3b2e697/FLAG69b719daa [2020-12-01 15:59:32,859 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:59:32,860 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_56abba09-691c-44a4-a851-e9d597c6e486/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound1.c [2020-12-01 15:59:32,873 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_56abba09-691c-44a4-a851-e9d597c6e486/bin/uautomizer/data/198fb3937/ad43cd1bb0844a6cb5ca198ef3b2e697/FLAG69b719daa [2020-12-01 15:59:33,183 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_56abba09-691c-44a4-a851-e9d597c6e486/bin/uautomizer/data/198fb3937/ad43cd1bb0844a6cb5ca198ef3b2e697 [2020-12-01 15:59:33,187 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:59:33,189 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:59:33,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:59:33,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:59:33,198 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:59:33,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:59:33" (1/1) ... [2020-12-01 15:59:33,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ba3f1a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:59:33, skipping insertion in model container [2020-12-01 15:59:33,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:59:33" (1/1) ... [2020-12-01 15:59:33,214 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:59:33,284 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:59:33,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:59:33,532 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:59:33,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:59:33,580 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:59:33,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:59:33 WrapperNode [2020-12-01 15:59:33,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:59:33,586 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:59:33,587 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:59:33,587 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:59:33,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:59:33" (1/1) ... [2020-12-01 15:59:33,615 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:59:33" (1/1) ... [2020-12-01 15:59:33,661 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:59:33,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:59:33,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:59:33,666 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:59:33,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:59:33" (1/1) ... [2020-12-01 15:59:33,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:59:33" (1/1) ... [2020-12-01 15:59:33,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:59:33" (1/1) ... [2020-12-01 15:59:33,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:59:33" (1/1) ... [2020-12-01 15:59:33,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:59:33" (1/1) ... [2020-12-01 15:59:33,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:59:33" (1/1) ... [2020-12-01 15:59:33,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:59:33" (1/1) ... [2020-12-01 15:59:33,714 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:59:33,715 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:59:33,715 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:59:33,715 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:59:33,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:59:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56abba09-691c-44a4-a851-e9d597c6e486/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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:2000 [2020-12-01 15:59:33,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:59:33,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:59:33,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:59:33,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:59:34,308 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:59:34,324 INFO L298 CfgBuilder]: Removed 21 assume(true) statements. [2020-12-01 15:59:34,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:59:34 BoogieIcfgContainer [2020-12-01 15:59:34,326 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:59:34,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:59:34,329 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:59:34,334 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:59:34,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:59:33" (1/3) ... [2020-12-01 15:59:34,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1abb1e4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:59:34, skipping insertion in model container [2020-12-01 15:59:34,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:59:33" (2/3) ... [2020-12-01 15:59:34,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1abb1e4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:59:34, skipping insertion in model container [2020-12-01 15:59:34,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:59:34" (3/3) ... [2020-12-01 15:59:34,340 INFO L111 eAbstractionObserver]: Analyzing ICFG ps5-ll_valuebound1.c [2020-12-01 15:59:34,359 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:59:34,364 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-01 15:59:34,380 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-01 15:59:34,413 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:59:34,413 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:59:34,413 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:59:34,413 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:59:34,414 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:59:34,414 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:59:34,414 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:59:34,414 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:59:34,438 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-12-01 15:59:34,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-01 15:59:34,446 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:59:34,448 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:59:34,449 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:59:34,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:59:34,461 INFO L82 PathProgramCache]: Analyzing trace with hash -594062832, now seen corresponding path program 1 times [2020-12-01 15:59:34,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:59:34,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940305641] [2020-12-01 15:59:34,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:59:34,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:59:34,780 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 15:59:34,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940305641] [2020-12-01 15:59:34,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:59:34,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:59:34,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065781172] [2020-12-01 15:59:34,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 15:59:34,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:59:34,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 15:59:34,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:59:34,824 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2020-12-01 15:59:34,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:59:34,850 INFO L93 Difference]: Finished difference Result 43 states and 56 transitions. [2020-12-01 15:59:34,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 15:59:34,852 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-12-01 15:59:34,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:59:34,871 INFO L225 Difference]: With dead ends: 43 [2020-12-01 15:59:34,871 INFO L226 Difference]: Without dead ends: 19 [2020-12-01 15:59:34,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:59:34,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-12-01 15:59:34,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-12-01 15:59:34,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-01 15:59:34,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-12-01 15:59:34,946 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 9 [2020-12-01 15:59:34,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:59:34,946 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-12-01 15:59:34,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 15:59:34,947 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-12-01 15:59:34,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-01 15:59:34,947 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:59:34,948 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:59:34,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:59:34,948 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:59:34,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:59:34,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1182791572, now seen corresponding path program 1 times [2020-12-01 15:59:34,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:59:34,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463517840] [2020-12-01 15:59:34,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:59:34,992 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:59:34,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1183424597] [2020-12-01 15:59:34,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56abba09-691c-44a4-a851-e9d597c6e486/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:59:35,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:59:35,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-01 15:59:35,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:59:35,356 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 15:59:35,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463517840] [2020-12-01 15:59:35,357 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:59:35,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183424597] [2020-12-01 15:59:35,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:59:35,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-01 15:59:35,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928550417] [2020-12-01 15:59:35,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:59:35,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:59:35,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:59:35,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:59:35,364 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 5 states. [2020-12-01 15:59:35,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:59:35,563 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2020-12-01 15:59:35,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:59:35,565 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-12-01 15:59:35,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:59:35,566 INFO L225 Difference]: With dead ends: 33 [2020-12-01 15:59:35,567 INFO L226 Difference]: Without dead ends: 23 [2020-12-01 15:59:35,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:59:35,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-01 15:59:35,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-12-01 15:59:35,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-01 15:59:35,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-12-01 15:59:35,577 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 9 [2020-12-01 15:59:35,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:59:35,578 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-12-01 15:59:35,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:59:35,579 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-12-01 15:59:35,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 15:59:35,580 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:59:35,580 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:59:35,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-01 15:59:35,808 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:59:35,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:59:35,809 INFO L82 PathProgramCache]: Analyzing trace with hash 637918818, now seen corresponding path program 1 times [2020-12-01 15:59:35,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:59:35,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653893515] [2020-12-01 15:59:35,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:59:35,847 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:59:35,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [85004491] [2020-12-01 15:59:35,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56abba09-691c-44a4-a851-e9d597c6e486/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:59:36,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:59:36,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-01 15:59:36,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:59:36,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:59:36,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653893515] [2020-12-01 15:59:36,115 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:59:36,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85004491] [2020-12-01 15:59:36,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:59:36,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-01 15:59:36,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063989452] [2020-12-01 15:59:36,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:59:36,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:59:36,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:59:36,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:59:36,122 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 6 states. [2020-12-01 15:59:36,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:59:36,392 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2020-12-01 15:59:36,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 15:59:36,393 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-01 15:59:36,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:59:36,396 INFO L225 Difference]: With dead ends: 36 [2020-12-01 15:59:36,396 INFO L226 Difference]: Without dead ends: 32 [2020-12-01 15:59:36,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-12-01 15:59:36,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-12-01 15:59:36,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2020-12-01 15:59:36,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-01 15:59:36,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-12-01 15:59:36,407 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 12 [2020-12-01 15:59:36,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:59:36,408 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-12-01 15:59:36,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:59:36,408 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-12-01 15:59:36,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 15:59:36,409 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:59:36,409 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:59:36,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:59:36,615 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:59:36,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:59:36,615 INFO L82 PathProgramCache]: Analyzing trace with hash -984884012, now seen corresponding path program 2 times [2020-12-01 15:59:36,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:59:36,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328441915] [2020-12-01 15:59:36,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:59:36,633 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:59:36,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [151670007] [2020-12-01 15:59:36,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56abba09-691c-44a4-a851-e9d597c6e486/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:59:36,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-01 15:59:36,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:59:36,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-01 15:59:36,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:59:36,840 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:59:36,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328441915] [2020-12-01 15:59:36,841 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:59:36,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151670007] [2020-12-01 15:59:36,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:59:36,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-01 15:59:36,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354555498] [2020-12-01 15:59:36,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:59:36,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:59:36,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:59:36,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:59:36,844 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 6 states. [2020-12-01 15:59:36,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:59:36,982 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-12-01 15:59:36,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:59:36,984 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-01 15:59:36,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:59:36,985 INFO L225 Difference]: With dead ends: 31 [2020-12-01 15:59:36,985 INFO L226 Difference]: Without dead ends: 18 [2020-12-01 15:59:36,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:59:36,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-01 15:59:37,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-12-01 15:59:37,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-01 15:59:37,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2020-12-01 15:59:37,001 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 15 [2020-12-01 15:59:37,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:59:37,002 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2020-12-01 15:59:37,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:59:37,002 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2020-12-01 15:59:37,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-01 15:59:37,012 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:59:37,012 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:59:37,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:59:37,236 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:59:37,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:59:37,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1618715859, now seen corresponding path program 1 times [2020-12-01 15:59:37,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:59:37,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627682445] [2020-12-01 15:59:37,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:59:37,260 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:59:37,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [878019408] [2020-12-01 15:59:37,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56abba09-691c-44a4-a851-e9d597c6e486/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:59:37,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:59:37,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-01 15:59:37,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:59:37,577 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-01 15:59:37,599 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:59:37,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627682445] [2020-12-01 15:59:37,600 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:59:37,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878019408] [2020-12-01 15:59:37,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:59:37,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-01 15:59:37,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896346673] [2020-12-01 15:59:37,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 15:59:37,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:59:37,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 15:59:37,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:59:37,620 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand 7 states. [2020-12-01 15:59:37,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:59:37,871 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2020-12-01 15:59:37,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 15:59:37,871 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-12-01 15:59:37,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:59:37,872 INFO L225 Difference]: With dead ends: 18 [2020-12-01 15:59:37,872 INFO L226 Difference]: Without dead ends: 0 [2020-12-01 15:59:37,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-12-01 15:59:37,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-01 15:59:37,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-01 15:59:37,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-01 15:59:37,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-01 15:59:37,874 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-12-01 15:59:37,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:59:37,875 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:59:37,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 15:59:37,875 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-01 15:59:37,875 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 15:59:38,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:59:38,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-01 15:59:38,468 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 23 [2020-12-01 15:59:38,471 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-12-01 15:59:38,471 INFO L262 CegarLoopResult]: For program point L11(lines 11 12) no Hoare annotation was computed. [2020-12-01 15:59:38,472 INFO L262 CegarLoopResult]: For program point L11-1(lines 11 12) no Hoare annotation was computed. [2020-12-01 15:59:38,472 INFO L262 CegarLoopResult]: For program point L11-2(lines 11 12) no Hoare annotation was computed. [2020-12-01 15:59:38,472 INFO L262 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-12-01 15:59:38,472 INFO L262 CegarLoopResult]: For program point L7-2(line 7) no Hoare annotation was computed. [2020-12-01 15:59:38,473 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-01 15:59:38,473 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-01 15:59:38,473 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-01 15:59:38,474 INFO L258 CegarLoopResult]: At program point L28-2(lines 28 37) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= ULTIMATE.start_main_~k~0 1))) (or (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~c~0) (= ULTIMATE.start_main_~y~0 1) .cse0 (< 0 ULTIMATE.start_main_~k~0) (= (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0) .cse1) (and (<= 0 ULTIMATE.start_main_~c~0) (= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_main_~y~0 0) .cse0 (<= 0 ULTIMATE.start_main_~k~0) .cse1))) [2020-12-01 15:59:38,474 INFO L262 CegarLoopResult]: For program point L28-3(lines 28 37) no Hoare annotation was computed. [2020-12-01 15:59:38,474 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-12-01 15:59:38,475 INFO L265 CegarLoopResult]: At program point L41(lines 17 42) the Hoare annotation is: true [2020-12-01 15:59:38,475 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-01 15:59:38,475 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-12-01 15:59:38,476 INFO L262 CegarLoopResult]: For program point L10(lines 10 13) no Hoare annotation was computed. [2020-12-01 15:59:38,476 INFO L258 CegarLoopResult]: At program point L10-1(lines 31 32) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse2 (<= ULTIMATE.start_main_~k~0 1))) (or (and .cse0 (<= 1 ULTIMATE.start_main_~c~0) (= ULTIMATE.start_main_~y~0 1) .cse1 (< 0 ULTIMATE.start_main_~k~0) (= (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0) .cse2) (and (<= 0 ULTIMATE.start_main_~c~0) .cse0 (= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_main_~y~0 0) .cse1 (<= 0 ULTIMATE.start_main_~k~0) .cse2))) [2020-12-01 15:59:38,476 INFO L262 CegarLoopResult]: For program point L10-2(lines 10 13) no Hoare annotation was computed. [2020-12-01 15:59:38,477 INFO L258 CegarLoopResult]: At program point L10-3(lines 9 15) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and (<= 1 ULTIMATE.start_main_~c~0) (= ULTIMATE.start_main_~y~0 1) .cse0 (< 0 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~k~0 1)) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~x~0 0) (or (= ULTIMATE.start_assume_abort_if_not_~cond 0) .cse0) (= ULTIMATE.start_main_~y~0 0)))) [2020-12-01 15:59:38,477 INFO L262 CegarLoopResult]: For program point L6(lines 6 8) no Hoare annotation was computed. [2020-12-01 15:59:38,477 INFO L262 CegarLoopResult]: For program point L10-4(lines 10 13) no Hoare annotation was computed. [2020-12-01 15:59:38,477 INFO L262 CegarLoopResult]: For program point L6-1(lines 6 8) no Hoare annotation was computed. [2020-12-01 15:59:38,478 INFO L265 CegarLoopResult]: At program point L10-5(lines 9 15) the Hoare annotation is: true [2020-12-01 15:59:38,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:59:38 BoogieIcfgContainer [2020-12-01 15:59:38,505 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:59:38,505 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:59:38,506 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:59:38,506 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:59:38,507 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:59:34" (3/4) ... [2020-12-01 15:59:38,511 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 15:59:38,525 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-12-01 15:59:38,525 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-01 15:59:38,526 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:59:38,526 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:59:38,652 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_56abba09-691c-44a4-a851-e9d597c6e486/bin/uautomizer/witness.graphml [2020-12-01 15:59:38,652 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:59:38,654 INFO L168 Benchmark]: Toolchain (without parser) took 5464.16 ms. Allocated memory was 86.0 MB in the beginning and 107.0 MB in the end (delta: 21.0 MB). Free memory was 44.8 MB in the beginning and 58.5 MB in the end (delta: -13.7 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. [2020-12-01 15:59:38,655 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 86.0 MB. Free memory is still 61.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:59:38,656 INFO L168 Benchmark]: CACSL2BoogieTranslator took 393.50 ms. Allocated memory is still 86.0 MB. Free memory was 44.6 MB in the beginning and 57.4 MB in the end (delta: -12.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-01 15:59:38,657 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.61 ms. Allocated memory is still 86.0 MB. Free memory was 57.1 MB in the beginning and 55.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:59:38,658 INFO L168 Benchmark]: Boogie Preprocessor took 49.71 ms. Allocated memory is still 86.0 MB. Free memory was 55.7 MB in the beginning and 54.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:59:38,659 INFO L168 Benchmark]: RCFGBuilder took 611.56 ms. Allocated memory is still 86.0 MB. Free memory was 54.6 MB in the beginning and 41.7 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-01 15:59:38,660 INFO L168 Benchmark]: TraceAbstraction took 4176.07 ms. Allocated memory was 86.0 MB in the beginning and 107.0 MB in the end (delta: 21.0 MB). Free memory was 41.5 MB in the beginning and 61.6 MB in the end (delta: -20.1 MB). Peak memory consumption was 34.2 MB. Max. memory is 16.1 GB. [2020-12-01 15:59:38,661 INFO L168 Benchmark]: Witness Printer took 147.23 ms. Allocated memory is still 107.0 MB. Free memory was 60.6 MB in the beginning and 58.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:59:38,683 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 86.0 MB. Free memory is still 61.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 393.50 ms. Allocated memory is still 86.0 MB. Free memory was 44.6 MB in the beginning and 57.4 MB in the end (delta: -12.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 75.61 ms. Allocated memory is still 86.0 MB. Free memory was 57.1 MB in the beginning and 55.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.71 ms. Allocated memory is still 86.0 MB. Free memory was 55.7 MB in the beginning and 54.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 611.56 ms. Allocated memory is still 86.0 MB. Free memory was 54.6 MB in the beginning and 41.7 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4176.07 ms. Allocated memory was 86.0 MB in the beginning and 107.0 MB in the end (delta: 21.0 MB). Free memory was 41.5 MB in the beginning and 61.6 MB in the end (delta: -20.1 MB). Peak memory consumption was 34.2 MB. Max. memory is 16.1 GB. * Witness Printer took 147.23 ms. Allocated memory is still 107.0 MB. Free memory was 60.6 MB in the beginning and 58.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: ((((((1 == cond && 1 <= c) && y == 1) && cond == 1) && 0 < k) && y * y * y * y == x) && k <= 1) || (((((0 <= c && x == 0) && y == 0) && cond == 1) && 0 <= k) && k <= 1) - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: ((((1 <= c && y == 1) && cond == 1) && 0 < k) && k <= 1) || (((1 == cond && x == 0) && (cond == 0 || cond == 1)) && y == 0) - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: ((((((1 == cond && 1 <= c) && y == 1) && cond == 1) && 0 < k) && y * y * y * y == x) && k <= 1) || ((((((0 <= c && 1 == cond) && x == 0) && y == 0) && cond == 1) && 0 <= k) && k <= 1) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 63 SDtfs, 107 SDslu, 65 SDs, 0 SdLazy, 114 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 13 NumberOfFragments, 131 HoareAnnotationTreeSize, 5 FomulaSimplifications, 74 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 9 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 4607 SizeOfPredicates, 20 NumberOfNonLiveVariables, 291 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 7/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...