./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 5826109f3da002ef221ffbad3510db88b48ab8f7 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-25 22:17:50,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 22:17:50,467 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 22:17:50,509 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 22:17:50,510 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 22:17:50,511 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 22:17:50,513 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 22:17:50,515 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 22:17:50,518 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 22:17:50,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 22:17:50,520 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 22:17:50,521 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 22:17:50,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 22:17:50,523 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 22:17:50,524 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 22:17:50,526 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 22:17:50,527 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 22:17:50,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 22:17:50,530 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 22:17:50,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 22:17:50,534 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 22:17:50,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 22:17:50,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 22:17:50,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 22:17:50,542 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 22:17:50,542 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 22:17:50,542 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 22:17:50,544 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 22:17:50,544 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 22:17:50,545 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 22:17:50,546 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 22:17:50,547 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 22:17:50,548 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 22:17:50,549 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 22:17:50,550 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 22:17:50,550 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 22:17:50,551 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 22:17:50,552 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 22:17:50,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 22:17:50,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 22:17:50,554 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 22:17:50,555 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 22:17:50,588 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 22:17:50,589 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 22:17:50,590 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 22:17:50,590 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 22:17:50,591 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 22:17:50,591 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 22:17:50,591 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 22:17:50,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 22:17:50,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 22:17:50,592 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 22:17:50,592 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 22:17:50,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 22:17:50,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 22:17:50,593 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 22:17:50,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 22:17:50,593 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 22:17:50,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 22:17:50,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 22:17:50,594 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 22:17:50,594 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 22:17:50,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 22:17:50,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:17:50,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 22:17:50,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 22:17:50,595 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 22:17:50,595 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 22:17:50,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 22:17:50,596 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 22:17:50,596 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 22:17:50,596 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5826109f3da002ef221ffbad3510db88b48ab8f7 [2020-10-25 22:17:50,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 22:17:50,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 22:17:50,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 22:17:50,995 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 22:17:50,999 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 22:17:51,000 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2020-10-25 22:17:51,076 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5513790ad/5498bf13988041178cc633e32e6747a0/FLAG09e2e7fb7 [2020-10-25 22:17:51,677 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 22:17:51,678 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2020-10-25 22:17:51,686 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5513790ad/5498bf13988041178cc633e32e6747a0/FLAG09e2e7fb7 [2020-10-25 22:17:52,016 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5513790ad/5498bf13988041178cc633e32e6747a0 [2020-10-25 22:17:52,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 22:17:52,029 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 22:17:52,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 22:17:52,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 22:17:52,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 22:17:52,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:17:52" (1/1) ... [2020-10-25 22:17:52,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@417d6019 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:52, skipping insertion in model container [2020-10-25 22:17:52,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:17:52" (1/1) ... [2020-10-25 22:17:52,065 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 22:17:52,099 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 22:17:52,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:17:52,361 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 22:17:52,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:17:52,425 INFO L208 MainTranslator]: Completed translation [2020-10-25 22:17:52,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:52 WrapperNode [2020-10-25 22:17:52,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 22:17:52,427 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 22:17:52,427 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 22:17:52,427 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 22:17:52,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:52" (1/1) ... [2020-10-25 22:17:52,447 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:52" (1/1) ... [2020-10-25 22:17:52,509 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 22:17:52,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 22:17:52,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 22:17:52,510 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 22:17:52,536 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:52" (1/1) ... [2020-10-25 22:17:52,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:52" (1/1) ... [2020-10-25 22:17:52,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:52" (1/1) ... [2020-10-25 22:17:52,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:52" (1/1) ... [2020-10-25 22:17:52,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:52" (1/1) ... [2020-10-25 22:17:52,573 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:52" (1/1) ... [2020-10-25 22:17:52,575 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:52" (1/1) ... [2020-10-25 22:17:52,578 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 22:17:52,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 22:17:52,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 22:17:52,580 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 22:17:52,581 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-25 22:17:52,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 22:17:52,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-25 22:17:52,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-25 22:17:52,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 22:17:52,668 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-10-25 22:17:52,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 22:17:52,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 22:17:52,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 22:17:53,257 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 22:17:53,258 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-25 22:17:53,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:17:53 BoogieIcfgContainer [2020-10-25 22:17:53,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 22:17:53,262 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 22:17:53,262 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 22:17:53,266 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 22:17:53,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 10:17:52" (1/3) ... [2020-10-25 22:17:53,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c39c19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:17:53, skipping insertion in model container [2020-10-25 22:17:53,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:52" (2/3) ... [2020-10-25 22:17:53,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c39c19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:17:53, skipping insertion in model container [2020-10-25 22:17:53,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:17:53" (3/3) ... [2020-10-25 22:17:53,269 INFO L111 eAbstractionObserver]: Analyzing ICFG veris.c_OpenSER_cases1_stripFullBoth_arr.i [2020-10-25 22:17:53,282 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 22:17:53,289 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 22:17:53,304 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 22:17:53,333 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 22:17:53,333 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 22:17:53,334 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 22:17:53,334 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 22:17:53,334 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 22:17:53,334 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 22:17:53,334 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 22:17:53,334 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 22:17:53,357 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-10-25 22:17:53,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-25 22:17:53,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:17:53,365 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:17:53,366 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:17:53,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:17:53,373 INFO L82 PathProgramCache]: Analyzing trace with hash 2145061963, now seen corresponding path program 1 times [2020-10-25 22:17:53,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:17:53,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491719639] [2020-10-25 22:17:53,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:17:53,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:17:53,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:17:53,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491719639] [2020-10-25 22:17:53,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:17:53,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 22:17:53,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552849250] [2020-10-25 22:17:53,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 22:17:53,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:17:53,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 22:17:53,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 22:17:53,627 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 3 states. [2020-10-25 22:17:53,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:17:53,678 INFO L93 Difference]: Finished difference Result 79 states and 117 transitions. [2020-10-25 22:17:53,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 22:17:53,681 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-25 22:17:53,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:17:53,695 INFO L225 Difference]: With dead ends: 79 [2020-10-25 22:17:53,696 INFO L226 Difference]: Without dead ends: 37 [2020-10-25 22:17:53,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 22:17:53,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-25 22:17:53,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-10-25 22:17:53,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-25 22:17:53,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 46 transitions. [2020-10-25 22:17:53,741 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 46 transitions. Word has length 22 [2020-10-25 22:17:53,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:17:53,742 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 46 transitions. [2020-10-25 22:17:53,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 22:17:53,742 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 46 transitions. [2020-10-25 22:17:53,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-25 22:17:53,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:17:53,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:17:53,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 22:17:53,744 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:17:53,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:17:53,745 INFO L82 PathProgramCache]: Analyzing trace with hash -2070589706, now seen corresponding path program 1 times [2020-10-25 22:17:53,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:17:53,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93463162] [2020-10-25 22:17:53,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:17:53,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:17:53,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:17:53,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93463162] [2020-10-25 22:17:53,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175746538] [2020-10-25 22:17:53,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-25 22:17:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:17:53,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-25 22:17:53,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:17:53,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-25 22:17:53,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-25 22:17:53,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-10-25 22:17:53,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484330785] [2020-10-25 22:17:53,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 22:17:53,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:17:53,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 22:17:53,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-25 22:17:53,962 INFO L87 Difference]: Start difference. First operand 36 states and 46 transitions. Second operand 3 states. [2020-10-25 22:17:53,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:17:53,979 INFO L93 Difference]: Finished difference Result 66 states and 86 transitions. [2020-10-25 22:17:53,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 22:17:53,980 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-10-25 22:17:53,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:17:53,981 INFO L225 Difference]: With dead ends: 66 [2020-10-25 22:17:53,982 INFO L226 Difference]: Without dead ends: 37 [2020-10-25 22:17:53,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-25 22:17:53,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-25 22:17:53,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-25 22:17:53,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-25 22:17:53,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2020-10-25 22:17:53,989 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 28 [2020-10-25 22:17:53,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:17:53,990 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2020-10-25 22:17:53,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 22:17:53,990 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2020-10-25 22:17:53,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-25 22:17:53,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:17:53,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:17:54,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-25 22:17:54,205 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:17:54,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:17:54,207 INFO L82 PathProgramCache]: Analyzing trace with hash 230232884, now seen corresponding path program 1 times [2020-10-25 22:17:54,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:17:54,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009694114] [2020-10-25 22:17:54,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:17:54,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:17:54,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:17:54,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009694114] [2020-10-25 22:17:54,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300077176] [2020-10-25 22:17:54,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-25 22:17:54,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:17:54,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-25 22:17:54,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:17:54,469 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-25 22:17:54,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-25 22:17:54,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-25 22:17:54,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2020-10-25 22:17:54,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486768883] [2020-10-25 22:17:54,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 22:17:54,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:17:54,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 22:17:54,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-25 22:17:54,498 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand 5 states. [2020-10-25 22:17:54,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:17:54,671 INFO L93 Difference]: Finished difference Result 94 states and 121 transitions. [2020-10-25 22:17:54,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-25 22:17:54,672 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-10-25 22:17:54,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:17:54,674 INFO L225 Difference]: With dead ends: 94 [2020-10-25 22:17:54,674 INFO L226 Difference]: Without dead ends: 64 [2020-10-25 22:17:54,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-25 22:17:54,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-25 22:17:54,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 41. [2020-10-25 22:17:54,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-25 22:17:54,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2020-10-25 22:17:54,682 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 28 [2020-10-25 22:17:54,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:17:54,682 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2020-10-25 22:17:54,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 22:17:54,683 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2020-10-25 22:17:54,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-25 22:17:54,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:17:54,684 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:17:54,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 22:17:54,898 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:17:54,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:17:54,900 INFO L82 PathProgramCache]: Analyzing trace with hash 100944628, now seen corresponding path program 1 times [2020-10-25 22:17:54,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:17:54,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319542012] [2020-10-25 22:17:54,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:17:54,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:17:54,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:17:54,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319542012] [2020-10-25 22:17:54,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945482995] [2020-10-25 22:17:54,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-25 22:17:55,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:17:55,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-25 22:17:55,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:17:55,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:17:55,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 22:17:55,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-10-25 22:17:55,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641187555] [2020-10-25 22:17:55,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 22:17:55,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:17:55,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 22:17:55,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-25 22:17:55,040 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand 5 states. [2020-10-25 22:17:55,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:17:55,062 INFO L93 Difference]: Finished difference Result 80 states and 100 transitions. [2020-10-25 22:17:55,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 22:17:55,062 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-10-25 22:17:55,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:17:55,063 INFO L225 Difference]: With dead ends: 80 [2020-10-25 22:17:55,063 INFO L226 Difference]: Without dead ends: 44 [2020-10-25 22:17:55,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-25 22:17:55,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-25 22:17:55,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-25 22:17:55,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-25 22:17:55,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2020-10-25 22:17:55,070 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 28 [2020-10-25 22:17:55,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:17:55,070 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2020-10-25 22:17:55,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 22:17:55,070 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2020-10-25 22:17:55,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-25 22:17:55,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:17:55,071 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:17:55,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 22:17:55,285 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:17:55,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:17:55,287 INFO L82 PathProgramCache]: Analyzing trace with hash -376313610, now seen corresponding path program 2 times [2020-10-25 22:17:55,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:17:55,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471217345] [2020-10-25 22:17:55,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:17:55,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:17:55,448 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-25 22:17:55,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471217345] [2020-10-25 22:17:55,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:17:55,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 22:17:55,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584678589] [2020-10-25 22:17:55,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 22:17:55,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:17:55,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 22:17:55,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-25 22:17:55,451 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand 4 states. [2020-10-25 22:17:55,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:17:55,542 INFO L93 Difference]: Finished difference Result 70 states and 89 transitions. [2020-10-25 22:17:55,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-25 22:17:55,543 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-25 22:17:55,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:17:55,543 INFO L225 Difference]: With dead ends: 70 [2020-10-25 22:17:55,544 INFO L226 Difference]: Without dead ends: 0 [2020-10-25 22:17:55,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-25 22:17:55,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-25 22:17:55,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-25 22:17:55,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-25 22:17:55,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-25 22:17:55,545 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2020-10-25 22:17:55,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:17:55,546 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-25 22:17:55,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 22:17:55,546 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-25 22:17:55,546 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-25 22:17:55,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-25 22:17:55,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-25 22:17:55,599 INFO L277 CegarLoopResult]: At program point L85(lines 58 86) the Hoare annotation is: true [2020-10-25 22:17:55,600 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-25 22:17:55,600 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-25 22:17:55,600 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-10-25 22:17:55,600 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-25 22:17:55,600 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-10-25 22:17:55,600 INFO L274 CegarLoopResult]: For program point L70-1(line 70) no Hoare annotation was computed. [2020-10-25 22:17:55,600 INFO L274 CegarLoopResult]: For program point L70-2(line 70) no Hoare annotation was computed. [2020-10-25 22:17:55,601 INFO L274 CegarLoopResult]: For program point L70-4(line 70) no Hoare annotation was computed. [2020-10-25 22:17:55,601 INFO L274 CegarLoopResult]: For program point L70-6(line 70) no Hoare annotation was computed. [2020-10-25 22:17:55,601 INFO L277 CegarLoopResult]: At program point L95(lines 87 96) the Hoare annotation is: true [2020-10-25 22:17:55,601 INFO L274 CegarLoopResult]: For program point L62(line 62) no Hoare annotation was computed. [2020-10-25 22:17:55,601 INFO L277 CegarLoopResult]: At program point L70-8(line 70) the Hoare annotation is: true [2020-10-25 22:17:55,601 INFO L274 CegarLoopResult]: For program point L70-9(line 70) no Hoare annotation was computed. [2020-10-25 22:17:55,602 INFO L274 CegarLoopResult]: For program point L71(line 71) no Hoare annotation was computed. [2020-10-25 22:17:55,602 INFO L274 CegarLoopResult]: For program point L71-2(line 71) no Hoare annotation was computed. [2020-10-25 22:17:55,602 INFO L274 CegarLoopResult]: For program point L71-4(lines 65 83) no Hoare annotation was computed. [2020-10-25 22:17:55,602 INFO L274 CegarLoopResult]: For program point L63-1(lines 63 84) no Hoare annotation was computed. [2020-10-25 22:17:55,602 INFO L274 CegarLoopResult]: For program point L63-2(lines 63 84) no Hoare annotation was computed. [2020-10-25 22:17:55,602 INFO L270 CegarLoopResult]: At program point L63-4(lines 63 84) the Hoare annotation is: (or (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (< ULTIMATE.start_parse_expression_list_~j~0 (+ ULTIMATE.start_parse_expression_list_~start~0 1))) [2020-10-25 22:17:55,603 INFO L274 CegarLoopResult]: For program point L63-5(lines 63 84) no Hoare annotation was computed. [2020-10-25 22:17:55,603 INFO L274 CegarLoopResult]: For program point L72(lines 72 81) no Hoare annotation was computed. [2020-10-25 22:17:55,603 INFO L274 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-10-25 22:17:55,603 INFO L270 CegarLoopResult]: At program point L15-2(lines 14 19) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (< ULTIMATE.start_parse_expression_list_~j~0 (+ ULTIMATE.start_parse_expression_list_~start~0 1))) [2020-10-25 22:17:55,603 INFO L274 CegarLoopResult]: For program point L73(lines 73 75) no Hoare annotation was computed. [2020-10-25 22:17:55,603 INFO L274 CegarLoopResult]: For program point L65(lines 65 83) no Hoare annotation was computed. [2020-10-25 22:17:55,604 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-25 22:17:55,604 INFO L274 CegarLoopResult]: For program point L90-2(lines 90 92) no Hoare annotation was computed. [2020-10-25 22:17:55,604 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-25 22:17:55,604 INFO L277 CegarLoopResult]: At program point L90-3(lines 90 92) the Hoare annotation is: true [2020-10-25 22:17:55,604 INFO L274 CegarLoopResult]: For program point L90-4(lines 90 92) no Hoare annotation was computed. [2020-10-25 22:17:55,604 INFO L274 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-10-25 22:17:55,605 INFO L274 CegarLoopResult]: For program point L66(line 66) no Hoare annotation was computed. [2020-10-25 22:17:55,605 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-25 22:17:55,605 INFO L270 CegarLoopResult]: At program point L42(line 42) the Hoare annotation is: (< ULTIMATE.start_parse_expression_list_~j~0 (+ ULTIMATE.start_parse_expression_list_~start~0 1)) [2020-10-25 22:17:55,605 INFO L274 CegarLoopResult]: For program point L67-1(line 67) no Hoare annotation was computed. [2020-10-25 22:17:55,605 INFO L274 CegarLoopResult]: For program point L67-3(line 67) no Hoare annotation was computed. [2020-10-25 22:17:55,605 INFO L270 CegarLoopResult]: At program point L67-5(line 67) the Hoare annotation is: (or (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (< ULTIMATE.start_parse_expression_list_~j~0 (+ ULTIMATE.start_parse_expression_list_~start~0 1))) [2020-10-25 22:17:55,606 INFO L274 CegarLoopResult]: For program point L67-6(line 67) no Hoare annotation was computed. [2020-10-25 22:17:55,606 INFO L274 CegarLoopResult]: For program point L68(line 68) no Hoare annotation was computed. [2020-10-25 22:17:55,606 INFO L274 CegarLoopResult]: For program point L68-2(line 68) no Hoare annotation was computed. [2020-10-25 22:17:55,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 10:17:55 BoogieIcfgContainer [2020-10-25 22:17:55,625 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 22:17:55,626 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 22:17:55,626 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 22:17:55,626 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 22:17:55,627 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:17:53" (3/4) ... [2020-10-25 22:17:55,630 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-25 22:17:55,643 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-10-25 22:17:55,644 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-10-25 22:17:55,644 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 22:17:55,645 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 22:17:55,720 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 22:17:55,720 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 22:17:55,722 INFO L168 Benchmark]: Toolchain (without parser) took 3697.63 ms. Allocated memory was 41.9 MB in the beginning and 73.4 MB in the end (delta: 31.5 MB). Free memory was 21.0 MB in the beginning and 46.2 MB in the end (delta: -25.3 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2020-10-25 22:17:55,723 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 41.9 MB. Free memory was 28.4 MB in the beginning and 28.4 MB in the end (delta: 32.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:17:55,724 INFO L168 Benchmark]: CACSL2BoogieTranslator took 393.34 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 20.3 MB in the beginning and 24.3 MB in the end (delta: -4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-25 22:17:55,724 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.54 ms. Allocated memory is still 50.3 MB. Free memory was 24.3 MB in the beginning and 34.3 MB in the end (delta: -10.0 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. [2020-10-25 22:17:55,725 INFO L168 Benchmark]: Boogie Preprocessor took 68.53 ms. Allocated memory is still 50.3 MB. Free memory was 34.3 MB in the beginning and 32.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:17:55,726 INFO L168 Benchmark]: RCFGBuilder took 680.70 ms. Allocated memory is still 50.3 MB. Free memory was 32.8 MB in the beginning and 22.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2020-10-25 22:17:55,726 INFO L168 Benchmark]: TraceAbstraction took 2363.40 ms. Allocated memory was 50.3 MB in the beginning and 73.4 MB in the end (delta: 23.1 MB). Free memory was 22.5 MB in the beginning and 50.4 MB in the end (delta: -27.9 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. [2020-10-25 22:17:55,727 INFO L168 Benchmark]: Witness Printer took 94.10 ms. Allocated memory is still 73.4 MB. Free memory was 50.4 MB in the beginning and 46.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-25 22:17:55,731 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 41.9 MB. Free memory was 28.4 MB in the beginning and 28.4 MB in the end (delta: 32.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 393.34 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 20.3 MB in the beginning and 24.3 MB in the end (delta: -4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 82.54 ms. Allocated memory is still 50.3 MB. Free memory was 24.3 MB in the beginning and 34.3 MB in the end (delta: -10.0 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 68.53 ms. Allocated memory is still 50.3 MB. Free memory was 34.3 MB in the beginning and 32.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 680.70 ms. Allocated memory is still 50.3 MB. Free memory was 32.8 MB in the beginning and 22.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2363.40 ms. Allocated memory was 50.3 MB in the beginning and 73.4 MB in the end (delta: 23.1 MB). Free memory was 22.5 MB in the beginning and 50.4 MB in the end (delta: -27.9 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. * Witness Printer took 94.10 ms. Allocated memory is still 73.4 MB. Free memory was 50.4 MB in the beginning and 46.2 MB in the end (delta: 4.2 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 87]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: j < start + 1 - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 63]: Loop Invariant Derived loop invariant: !(0 == cond) || j < start + 1 - InvariantResult [Line: 90]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: !(0 == cond) && j < start + 1 - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: !(0 == cond) || j < start + 1 - InvariantResult [Line: 70]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.2s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 235 SDtfs, 84 SDslu, 315 SDs, 0 SdLazy, 110 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=4, 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, 25 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 21 NumberOfFragments, 39 HoareAnnotationTreeSize, 8 FomulaSimplifications, 11 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 220 NumberOfCodeBlocks, 220 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 212 ConstructedInterpolants, 0 QuantifiedInterpolants, 6981 SizeOfPredicates, 3 NumberOfNonLiveVariables, 382 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 6/10 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...