./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_931e9eb0-e5d9-4062-9090-136a9314749e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_931e9eb0-e5d9-4062-9090-136a9314749e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_931e9eb0-e5d9-4062-9090-136a9314749e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_931e9eb0-e5d9-4062-9090-136a9314749e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_931e9eb0-e5d9-4062-9090-136a9314749e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_931e9eb0-e5d9-4062-9090-136a9314749e/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 20e42866e96d3e66a15deabf6033f8c164622233 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 23:38:15,737 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:38:15,740 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:38:15,805 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:38:15,806 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:38:15,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:38:15,814 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:38:15,819 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:38:15,822 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:38:15,836 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:38:15,837 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:38:15,840 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:38:15,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:38:15,844 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:38:15,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:38:15,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:38:15,854 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:38:15,860 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:38:15,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:38:15,872 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:38:15,874 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:38:15,877 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:38:15,879 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:38:15,881 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:38:15,893 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:38:15,894 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:38:15,894 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:38:15,897 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:38:15,897 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:38:15,899 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:38:15,899 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:38:15,900 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:38:15,903 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:38:15,904 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:38:15,905 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:38:15,906 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:38:15,906 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:38:15,907 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:38:15,907 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:38:15,908 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:38:15,909 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:38:15,912 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_931e9eb0-e5d9-4062-9090-136a9314749e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 23:38:15,966 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:38:15,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:38:15,968 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:38:15,969 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:38:15,969 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:38:15,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:38:15,970 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:38:15,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:38:15,970 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:38:15,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:38:15,972 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:38:15,972 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:38:15,973 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:38:15,973 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:38:15,973 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:38:15,973 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:38:15,974 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:38:15,974 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:38:15,974 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:38:15,975 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:38:15,975 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:38:15,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:38:15,975 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:38:15,976 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:38:15,976 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:38:15,976 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:38:15,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 23:38:15,977 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:38:15,977 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:38:15,977 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_931e9eb0-e5d9-4062-9090-136a9314749e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_931e9eb0-e5d9-4062-9090-136a9314749e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20e42866e96d3e66a15deabf6033f8c164622233 [2020-11-29 23:38:16,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:38:16,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:38:16,296 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:38:16,297 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:38:16,299 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:38:16,300 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_931e9eb0-e5d9-4062-9090-136a9314749e/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound2.i [2020-11-29 23:38:16,384 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_931e9eb0-e5d9-4062-9090-136a9314749e/bin/uautomizer/data/9fe638650/f00d4f794af54b82999fcaf7da380ac3/FLAGd019495fc [2020-11-29 23:38:16,915 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:38:16,915 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_931e9eb0-e5d9-4062-9090-136a9314749e/sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound2.i [2020-11-29 23:38:16,923 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_931e9eb0-e5d9-4062-9090-136a9314749e/bin/uautomizer/data/9fe638650/f00d4f794af54b82999fcaf7da380ac3/FLAGd019495fc [2020-11-29 23:38:17,277 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_931e9eb0-e5d9-4062-9090-136a9314749e/bin/uautomizer/data/9fe638650/f00d4f794af54b82999fcaf7da380ac3 [2020-11-29 23:38:17,280 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:38:17,281 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:38:17,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:38:17,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:38:17,288 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:38:17,289 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:38:17" (1/1) ... [2020-11-29 23:38:17,291 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b626d01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:38:17, skipping insertion in model container [2020-11-29 23:38:17,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:38:17" (1/1) ... [2020-11-29 23:38:17,313 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:38:17,339 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:38:17,601 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:38:17,614 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:38:17,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:38:17,692 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:38:17,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:38:17 WrapperNode [2020-11-29 23:38:17,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:38:17,696 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:38:17,696 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:38:17,696 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:38:17,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:38:17" (1/1) ... [2020-11-29 23:38:17,716 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:38:17" (1/1) ... [2020-11-29 23:38:17,748 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:38:17,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:38:17,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:38:17,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:38:17,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:38:17" (1/1) ... [2020-11-29 23:38:17,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:38:17" (1/1) ... [2020-11-29 23:38:17,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:38:17" (1/1) ... [2020-11-29 23:38:17,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:38:17" (1/1) ... [2020-11-29 23:38:17,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:38:17" (1/1) ... [2020-11-29 23:38:17,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:38:17" (1/1) ... [2020-11-29 23:38:17,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:38:17" (1/1) ... [2020-11-29 23:38:17,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:38:17,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:38:17,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:38:17,805 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:38:17,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:38:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_931e9eb0-e5d9-4062-9090-136a9314749e/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 [2020-11-29 23:38:17,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:38:17,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:38:17,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:38:17,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:38:18,175 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:38:18,175 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-29 23:38:18,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:38:18 BoogieIcfgContainer [2020-11-29 23:38:18,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:38:18,178 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:38:18,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:38:18,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:38:18,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:38:17" (1/3) ... [2020-11-29 23:38:18,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2adf7cd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:38:18, skipping insertion in model container [2020-11-29 23:38:18,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:38:17" (2/3) ... [2020-11-29 23:38:18,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2adf7cd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:38:18, skipping insertion in model container [2020-11-29 23:38:18,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:38:18" (3/3) ... [2020-11-29 23:38:18,186 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin_unwindbound2.i [2020-11-29 23:38:18,197 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:38:18,201 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-29 23:38:18,214 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-29 23:38:18,255 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:38:18,256 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 23:38:18,256 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:38:18,256 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:38:18,256 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:38:18,256 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:38:18,256 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:38:18,256 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:38:18,286 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-11-29 23:38:18,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 23:38:18,292 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:38:18,293 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:38:18,293 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:38:18,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:38:18,308 INFO L82 PathProgramCache]: Analyzing trace with hash -158404674, now seen corresponding path program 1 times [2020-11-29 23:38:18,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:38:18,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48980225] [2020-11-29 23:38:18,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:38:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:38:18,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:38:18,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48980225] [2020-11-29 23:38:18,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:38:18,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:38:18,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012624608] [2020-11-29 23:38:18,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 23:38:18,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:38:18,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 23:38:18,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:38:18,601 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-11-29 23:38:18,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:38:18,621 INFO L93 Difference]: Finished difference Result 53 states and 76 transitions. [2020-11-29 23:38:18,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 23:38:18,623 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-29 23:38:18,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:38:18,641 INFO L225 Difference]: With dead ends: 53 [2020-11-29 23:38:18,641 INFO L226 Difference]: Without dead ends: 24 [2020-11-29 23:38:18,650 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 [2020-11-29 23:38:18,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-11-29 23:38:18,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-11-29 23:38:18,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-29 23:38:18,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-11-29 23:38:18,702 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 13 [2020-11-29 23:38:18,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:38:18,703 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-11-29 23:38:18,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 23:38:18,703 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-11-29 23:38:18,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 23:38:18,704 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:38:18,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:38:18,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 23:38:18,705 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:38:18,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:38:18,707 INFO L82 PathProgramCache]: Analyzing trace with hash 124542962, now seen corresponding path program 1 times [2020-11-29 23:38:18,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:38:18,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198673835] [2020-11-29 23:38:18,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:38:18,729 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:38:18,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1900450169] [2020-11-29 23:38:18,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_931e9eb0-e5d9-4062-9090-136a9314749e/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 [2020-11-29 23:38:18,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:38:18,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 23:38:18,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:38:18,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:38:18,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198673835] [2020-11-29 23:38:18,963 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:38:18,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900450169] [2020-11-29 23:38:18,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:38:18,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:38:18,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504886228] [2020-11-29 23:38:18,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:38:18,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:38:18,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:38:18,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:38:18,967 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 4 states. [2020-11-29 23:38:19,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:38:19,012 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2020-11-29 23:38:19,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:38:19,013 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-29 23:38:19,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:38:19,014 INFO L225 Difference]: With dead ends: 41 [2020-11-29 23:38:19,014 INFO L226 Difference]: Without dead ends: 26 [2020-11-29 23:38:19,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:38:19,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-29 23:38:19,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-11-29 23:38:19,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-29 23:38:19,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-11-29 23:38:19,022 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 14 [2020-11-29 23:38:19,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:38:19,022 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-11-29 23:38:19,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:38:19,023 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-11-29 23:38:19,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 23:38:19,024 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:38:19,024 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:38:19,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-29 23:38:19,234 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:38:19,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:38:19,235 INFO L82 PathProgramCache]: Analyzing trace with hash -787061319, now seen corresponding path program 1 times [2020-11-29 23:38:19,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:38:19,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020020135] [2020-11-29 23:38:19,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:38:19,269 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:38:19,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [482273725] [2020-11-29 23:38:19,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_931e9eb0-e5d9-4062-9090-136a9314749e/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 [2020-11-29 23:38:19,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:38:19,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 23:38:19,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:38:19,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:38:19,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020020135] [2020-11-29 23:38:19,454 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:38:19,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482273725] [2020-11-29 23:38:19,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:38:19,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:38:19,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609589035] [2020-11-29 23:38:19,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:38:19,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:38:19,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:38:19,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:38:19,456 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 4 states. [2020-11-29 23:38:19,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:38:19,590 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2020-11-29 23:38:19,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:38:19,592 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-11-29 23:38:19,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:38:19,593 INFO L225 Difference]: With dead ends: 47 [2020-11-29 23:38:19,594 INFO L226 Difference]: Without dead ends: 36 [2020-11-29 23:38:19,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:38:19,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-29 23:38:19,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2020-11-29 23:38:19,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-29 23:38:19,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-11-29 23:38:19,610 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 15 [2020-11-29 23:38:19,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:38:19,611 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-11-29 23:38:19,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:38:19,611 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-11-29 23:38:19,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 23:38:19,613 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:38:19,614 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:38:19,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:38:19,830 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:38:19,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:38:19,830 INFO L82 PathProgramCache]: Analyzing trace with hash -610403793, now seen corresponding path program 1 times [2020-11-29 23:38:19,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:38:19,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371150024] [2020-11-29 23:38:19,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:38:19,847 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:38:19,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1268666290] [2020-11-29 23:38:19,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_931e9eb0-e5d9-4062-9090-136a9314749e/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 [2020-11-29 23:38:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:38:19,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 23:38:19,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:38:19,985 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:38:19,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371150024] [2020-11-29 23:38:19,986 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:38:19,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268666290] [2020-11-29 23:38:19,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:38:19,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 23:38:19,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550794250] [2020-11-29 23:38:19,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:38:19,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:38:19,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:38:19,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:38:19,988 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 6 states. [2020-11-29 23:38:20,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:38:20,052 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2020-11-29 23:38:20,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:38:20,053 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-11-29 23:38:20,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:38:20,054 INFO L225 Difference]: With dead ends: 48 [2020-11-29 23:38:20,054 INFO L226 Difference]: Without dead ends: 22 [2020-11-29 23:38:20,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:38:20,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-29 23:38:20,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-11-29 23:38:20,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-29 23:38:20,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2020-11-29 23:38:20,059 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 20 [2020-11-29 23:38:20,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:38:20,059 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2020-11-29 23:38:20,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:38:20,059 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2020-11-29 23:38:20,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-29 23:38:20,060 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:38:20,060 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:38:20,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:38:20,261 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:38:20,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:38:20,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1772203868, now seen corresponding path program 1 times [2020-11-29 23:38:20,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:38:20,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196832018] [2020-11-29 23:38:20,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:38:20,281 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:38:20,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [123396051] [2020-11-29 23:38:20,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_931e9eb0-e5d9-4062-9090-136a9314749e/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 [2020-11-29 23:38:20,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:38:20,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-29 23:38:20,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:38:20,387 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 23:38:20,387 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:38:20,430 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 23:38:20,431 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:38:20,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:38:20,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196832018] [2020-11-29 23:38:20,520 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:38:20,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123396051] [2020-11-29 23:38:20,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:38:20,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-29 23:38:20,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968090659] [2020-11-29 23:38:20,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 23:38:20,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:38:20,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 23:38:20,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:38:20,522 INFO L87 Difference]: Start difference. First operand 22 states and 21 transitions. Second operand 7 states. [2020-11-29 23:38:20,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:38:20,695 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2020-11-29 23:38:20,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 23:38:20,700 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-11-29 23:38:20,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:38:20,700 INFO L225 Difference]: With dead ends: 22 [2020-11-29 23:38:20,700 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 23:38:20,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-11-29 23:38:20,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 23:38:20,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 23:38:20,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 23:38:20,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 23:38:20,702 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-11-29 23:38:20,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:38:20,702 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:38:20,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 23:38:20,702 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 23:38:20,703 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 23:38:20,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:38:20,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 23:38:21,053 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-29 23:38:21,054 INFO L274 CegarLoopResult]: For program point L19(lines 19 22) no Hoare annotation was computed. [2020-11-29 23:38:21,054 INFO L270 CegarLoopResult]: At program point L19-1(line 42) the Hoare annotation is: (let ((.cse0 (mod ULTIMATE.start_main_~B~0 4294967296))) (and (<= 1 .cse0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~b~0) (< .cse0 2147483647) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0) (<= 2 ~counter~0))) [2020-11-29 23:38:21,054 INFO L274 CegarLoopResult]: For program point L19-2(lines 19 22) no Hoare annotation was computed. [2020-11-29 23:38:21,054 INFO L277 CegarLoopResult]: At program point L19-3(lines 18 24) the Hoare annotation is: true [2020-11-29 23:38:21,054 INFO L274 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-11-29 23:38:21,054 INFO L274 CegarLoopResult]: For program point L15-1(lines 15 17) no Hoare annotation was computed. [2020-11-29 23:38:21,054 INFO L274 CegarLoopResult]: For program point L40(lines 40 49) no Hoare annotation was computed. [2020-11-29 23:38:21,055 INFO L274 CegarLoopResult]: For program point L40-2(lines 40 49) no Hoare annotation was computed. [2020-11-29 23:38:21,055 INFO L274 CegarLoopResult]: For program point L36-1(lines 36 39) no Hoare annotation was computed. [2020-11-29 23:38:21,055 INFO L270 CegarLoopResult]: At program point L36-3(lines 36 39) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_main_~q~0 0)) (.cse2 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0))) (or (let ((.cse0 (mod ULTIMATE.start_main_~B~0 4294967296))) (and (<= 1 .cse0) (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~b~0) (< .cse0 2147483647) .cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1) .cse2 (<= 0 ~counter~0))) (and (<= 1 ~counter~0) .cse1 .cse2))) [2020-11-29 23:38:21,055 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 23:38:21,055 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 23:38:21,055 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 23:38:21,055 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-29 23:38:21,055 INFO L274 CegarLoopResult]: For program point L20(lines 20 21) no Hoare annotation was computed. [2020-11-29 23:38:21,055 INFO L274 CegarLoopResult]: For program point L20-1(lines 20 21) no Hoare annotation was computed. [2020-11-29 23:38:21,055 INFO L274 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-11-29 23:38:21,056 INFO L274 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-11-29 23:38:21,056 INFO L274 CegarLoopResult]: For program point L45(lines 45 48) no Hoare annotation was computed. [2020-11-29 23:38:21,056 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-29 23:38:21,056 INFO L274 CegarLoopResult]: For program point L45-2(lines 26 52) no Hoare annotation was computed. [2020-11-29 23:38:21,056 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-29 23:38:21,056 INFO L274 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed. [2020-11-29 23:38:21,056 INFO L274 CegarLoopResult]: For program point L12-6(line 12) no Hoare annotation was computed. [2020-11-29 23:38:21,056 INFO L274 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-11-29 23:38:21,056 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 23:38:21,056 INFO L277 CegarLoopResult]: At program point L51(lines 26 52) the Hoare annotation is: true [2020-11-29 23:38:21,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:38:21 BoogieIcfgContainer [2020-11-29 23:38:21,078 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 23:38:21,079 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:38:21,079 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:38:21,079 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:38:21,080 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:38:18" (3/4) ... [2020-11-29 23:38:21,083 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 23:38:21,095 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-29 23:38:21,095 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 23:38:21,095 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 23:38:21,096 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 23:38:21,164 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_931e9eb0-e5d9-4062-9090-136a9314749e/bin/uautomizer/witness.graphml [2020-11-29 23:38:21,164 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:38:21,168 INFO L168 Benchmark]: Toolchain (without parser) took 3883.47 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 63.7 MB in the beginning and 64.8 MB in the end (delta: -1.2 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:38:21,169 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 92.3 MB. Free memory was 50.0 MB in the beginning and 49.9 MB in the end (delta: 44.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:38:21,170 INFO L168 Benchmark]: CACSL2BoogieTranslator took 410.88 ms. Allocated memory is still 92.3 MB. Free memory was 63.4 MB in the beginning and 69.1 MB in the end (delta: -5.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:38:21,170 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.16 ms. Allocated memory is still 92.3 MB. Free memory was 69.1 MB in the beginning and 67.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:38:21,170 INFO L168 Benchmark]: Boogie Preprocessor took 54.10 ms. Allocated memory is still 92.3 MB. Free memory was 67.5 MB in the beginning and 66.5 MB in the end (delta: 955.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:38:21,171 INFO L168 Benchmark]: RCFGBuilder took 372.42 ms. Allocated memory is still 92.3 MB. Free memory was 66.3 MB in the beginning and 52.4 MB in the end (delta: 13.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 23:38:21,171 INFO L168 Benchmark]: TraceAbstraction took 2899.97 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 52.1 MB in the beginning and 68.1 MB in the end (delta: -15.9 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. [2020-11-29 23:38:21,172 INFO L168 Benchmark]: Witness Printer took 85.28 ms. Allocated memory is still 111.1 MB. Free memory was 68.1 MB in the beginning and 64.8 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 23:38:21,178 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 92.3 MB. Free memory was 50.0 MB in the beginning and 49.9 MB in the end (delta: 44.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 410.88 ms. Allocated memory is still 92.3 MB. Free memory was 63.4 MB in the beginning and 69.1 MB in the end (delta: -5.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.16 ms. Allocated memory is still 92.3 MB. Free memory was 69.1 MB in the beginning and 67.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.10 ms. Allocated memory is still 92.3 MB. Free memory was 67.5 MB in the beginning and 66.5 MB in the end (delta: 955.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 372.42 ms. Allocated memory is still 92.3 MB. Free memory was 66.3 MB in the beginning and 52.4 MB in the end (delta: 13.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2899.97 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 52.1 MB in the beginning and 68.1 MB in the end (delta: -15.9 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. * Witness Printer took 85.28 ms. Allocated memory is still 111.1 MB. Free memory was 68.1 MB in the beginning and 64.8 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((((1 <= B % 4294967296 && B == b) && B % 4294967296 < 2147483647) && q == 0) && cond == 1) && A == r) && 0 <= counter) || ((1 <= counter && q == 0) && A == r) - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: ((((((1 <= B % 4294967296 && 1 <= cond) && B == b) && B % 4294967296 < 2147483647) && q == 0) && cond == 1) && A == r) && 2 <= counter - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.6s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 112 SDtfs, 58 SDslu, 118 SDs, 0 SdLazy, 62 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 10 NumberOfFragments, 68 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 13 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 5410 SizeOfPredicates, 13 NumberOfNonLiveVariables, 307 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 4/5 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...