./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d 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_1.3.100.v20150511-1540.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/verifythis/elimination_max_rec_onepoint.c -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 4099afe4d4ae3c88800047494721799286636d7a ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 01:49:04,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 01:49:04,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 01:49:04,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 01:49:04,527 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 01:49:04,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 01:49:04,538 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 01:49:04,550 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 01:49:04,552 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 01:49:04,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 01:49:04,557 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 01:49:04,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 01:49:04,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 01:49:04,562 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 01:49:04,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 01:49:04,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 01:49:04,567 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 01:49:04,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 01:49:04,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 01:49:04,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 01:49:04,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 01:49:04,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 01:49:04,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 01:49:04,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 01:49:04,592 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 01:49:04,592 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 01:49:04,593 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 01:49:04,595 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 01:49:04,596 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 01:49:04,597 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 01:49:04,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 01:49:04,597 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 01:49:04,600 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 01:49:04,601 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 01:49:04,602 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 01:49:04,602 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 01:49:04,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 01:49:04,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 01:49:04,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 01:49:04,607 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 01:49:04,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 01:49:04,611 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 01:49:04,648 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 01:49:04,648 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 01:49:04,649 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 01:49:04,650 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 01:49:04,650 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 01:49:04,651 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 01:49:04,652 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 01:49:04,652 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 01:49:04,652 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 01:49:04,652 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 01:49:04,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 01:49:04,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 01:49:04,653 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 01:49:04,654 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 01:49:04,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 01:49:04,654 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 01:49:04,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 01:49:04,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 01:49:04,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 01:49:04,655 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 01:49:04,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 01:49:04,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:49:04,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 01:49:04,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 01:49:04,657 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 01:49:04,657 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 01:49:04,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 01:49:04,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 01:49:04,657 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 01:49:04,658 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> 4099afe4d4ae3c88800047494721799286636d7a [2020-10-20 01:49:04,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 01:49:04,893 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 01:49:04,898 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 01:49:04,899 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 01:49:04,900 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 01:49:04,901 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c [2020-10-20 01:49:04,974 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ba7229f2/837ea1e8e2594e5e85b863c021ee3c8a/FLAG3b17a1231 [2020-10-20 01:49:05,433 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 01:49:05,434 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c [2020-10-20 01:49:05,440 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ba7229f2/837ea1e8e2594e5e85b863c021ee3c8a/FLAG3b17a1231 [2020-10-20 01:49:05,844 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ba7229f2/837ea1e8e2594e5e85b863c021ee3c8a [2020-10-20 01:49:05,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 01:49:05,853 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 01:49:05,854 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 01:49:05,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 01:49:05,859 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 01:49:05,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:49:05" (1/1) ... [2020-10-20 01:49:05,863 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38ed799d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:49:05, skipping insertion in model container [2020-10-20 01:49:05,864 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:49:05" (1/1) ... [2020-10-20 01:49:05,872 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 01:49:05,893 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 01:49:06,152 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:49:06,167 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 01:49:06,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:49:06,209 INFO L208 MainTranslator]: Completed translation [2020-10-20 01:49:06,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:49:06 WrapperNode [2020-10-20 01:49:06,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 01:49:06,211 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 01:49:06,211 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 01:49:06,211 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 01:49:06,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:49:06" (1/1) ... [2020-10-20 01:49:06,230 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:49:06" (1/1) ... [2020-10-20 01:49:06,255 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 01:49:06,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 01:49:06,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 01:49:06,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 01:49:06,266 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:49:06" (1/1) ... [2020-10-20 01:49:06,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:49:06" (1/1) ... [2020-10-20 01:49:06,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:49:06" (1/1) ... [2020-10-20 01:49:06,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:49:06" (1/1) ... [2020-10-20 01:49:06,276 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:49:06" (1/1) ... [2020-10-20 01:49:06,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:49:06" (1/1) ... [2020-10-20 01:49:06,281 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:49:06" (1/1) ... [2020-10-20 01:49:06,283 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 01:49:06,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 01:49:06,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 01:49:06,284 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 01:49:06,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:49:06" (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 [2020-10-20 01:49:06,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 01:49:06,344 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-20 01:49:06,345 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-20 01:49:06,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 01:49:06,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 01:49:06,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 01:49:06,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 01:49:06,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 01:49:06,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 01:49:06,684 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 01:49:06,685 INFO L298 CfgBuilder]: Removed 24 assume(true) statements. [2020-10-20 01:49:06,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:49:06 BoogieIcfgContainer [2020-10-20 01:49:06,687 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 01:49:06,688 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 01:49:06,688 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 01:49:06,691 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 01:49:06,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 01:49:05" (1/3) ... [2020-10-20 01:49:06,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f43a6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:49:06, skipping insertion in model container [2020-10-20 01:49:06,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:49:06" (2/3) ... [2020-10-20 01:49:06,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f43a6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:49:06, skipping insertion in model container [2020-10-20 01:49:06,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:49:06" (3/3) ... [2020-10-20 01:49:06,700 INFO L111 eAbstractionObserver]: Analyzing ICFG elimination_max_rec_onepoint.c [2020-10-20 01:49:06,712 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 01:49:06,719 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-20 01:49:06,729 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-20 01:49:06,750 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 01:49:06,750 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 01:49:06,750 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 01:49:06,750 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 01:49:06,750 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 01:49:06,751 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 01:49:06,751 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 01:49:06,751 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 01:49:06,767 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-20 01:49:06,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 01:49:06,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:49:06,772 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:49:06,773 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, checkErr1ASSERT_VIOLATIONERROR_FUNCTION, checkErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:49:06,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:49:06,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1680358476, now seen corresponding path program 1 times [2020-10-20 01:49:06,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:49:06,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657135351] [2020-10-20 01:49:06,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:49:06,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:49:06,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:49:06,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657135351] [2020-10-20 01:49:06,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:49:06,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:49:06,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673095483] [2020-10-20 01:49:06,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 01:49:06,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:49:06,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 01:49:06,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 01:49:06,943 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 2 states. [2020-10-20 01:49:06,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:49:06,969 INFO L93 Difference]: Finished difference Result 66 states and 83 transitions. [2020-10-20 01:49:06,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 01:49:06,971 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-10-20 01:49:06,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:49:06,988 INFO L225 Difference]: With dead ends: 66 [2020-10-20 01:49:06,988 INFO L226 Difference]: Without dead ends: 29 [2020-10-20 01:49:06,992 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 [2020-10-20 01:49:07,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-20 01:49:07,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-20 01:49:07,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-20 01:49:07,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-10-20 01:49:07,034 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 12 [2020-10-20 01:49:07,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:49:07,034 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-10-20 01:49:07,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 01:49:07,034 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-10-20 01:49:07,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 01:49:07,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:49:07,036 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:49:07,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 01:49:07,037 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, checkErr1ASSERT_VIOLATIONERROR_FUNCTION, checkErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:49:07,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:49:07,037 INFO L82 PathProgramCache]: Analyzing trace with hash 477984840, now seen corresponding path program 1 times [2020-10-20 01:49:07,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:49:07,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217168325] [2020-10-20 01:49:07,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:49:07,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:49:07,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:49:07,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217168325] [2020-10-20 01:49:07,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:49:07,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:49:07,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26069169] [2020-10-20 01:49:07,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:49:07,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:49:07,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:49:07,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:49:07,188 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 5 states. [2020-10-20 01:49:07,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:49:07,350 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2020-10-20 01:49:07,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 01:49:07,350 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-20 01:49:07,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:49:07,354 INFO L225 Difference]: With dead ends: 58 [2020-10-20 01:49:07,354 INFO L226 Difference]: Without dead ends: 56 [2020-10-20 01:49:07,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-20 01:49:07,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-20 01:49:07,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 43. [2020-10-20 01:49:07,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-20 01:49:07,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2020-10-20 01:49:07,370 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 12 [2020-10-20 01:49:07,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:49:07,370 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2020-10-20 01:49:07,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:49:07,371 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2020-10-20 01:49:07,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 01:49:07,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:49:07,372 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:49:07,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 01:49:07,373 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, checkErr1ASSERT_VIOLATIONERROR_FUNCTION, checkErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:49:07,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:49:07,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1834568717, now seen corresponding path program 1 times [2020-10-20 01:49:07,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:49:07,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908717039] [2020-10-20 01:49:07,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:49:07,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:49:07,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 01:49:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:49:07,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:49:07,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908717039] [2020-10-20 01:49:07,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:49:07,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:49:07,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664541777] [2020-10-20 01:49:07,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:49:07,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:49:07,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:49:07,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:49:07,545 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 5 states. [2020-10-20 01:49:07,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:49:07,607 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2020-10-20 01:49:07,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 01:49:07,610 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-20 01:49:07,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:49:07,611 INFO L225 Difference]: With dead ends: 43 [2020-10-20 01:49:07,612 INFO L226 Difference]: Without dead ends: 39 [2020-10-20 01:49:07,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-20 01:49:07,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-20 01:49:07,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-20 01:49:07,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-20 01:49:07,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-10-20 01:49:07,621 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 15 [2020-10-20 01:49:07,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:49:07,622 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-10-20 01:49:07,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:49:07,622 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-10-20 01:49:07,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 01:49:07,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:49:07,624 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:49:07,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 01:49:07,624 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, checkErr1ASSERT_VIOLATIONERROR_FUNCTION, checkErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:49:07,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:49:07,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1641730980, now seen corresponding path program 1 times [2020-10-20 01:49:07,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:49:07,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050034937] [2020-10-20 01:49:07,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:49:07,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:49:07,815 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:49:07,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050034937] [2020-10-20 01:49:07,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980699706] [2020-10-20 01:49:07,816 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 [2020-10-20 01:49:07,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:49:07,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-20 01:49:07,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:49:08,032 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 01:49:08,037 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 01:49:08,046 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 01:49:08,049 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 01:49:08,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:49:08,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 01:49:08,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-10-20 01:49:08,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540471383] [2020-10-20 01:49:08,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 01:49:08,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:49:08,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 01:49:08,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-20 01:49:08,070 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 10 states. [2020-10-20 01:49:08,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:49:08,335 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2020-10-20 01:49:08,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-20 01:49:08,336 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-10-20 01:49:08,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:49:08,337 INFO L225 Difference]: With dead ends: 52 [2020-10-20 01:49:08,337 INFO L226 Difference]: Without dead ends: 50 [2020-10-20 01:49:08,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2020-10-20 01:49:08,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-20 01:49:08,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 23. [2020-10-20 01:49:08,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-20 01:49:08,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-10-20 01:49:08,344 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 20 [2020-10-20 01:49:08,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:49:08,345 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-10-20 01:49:08,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 01:49:08,345 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-10-20 01:49:08,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-20 01:49:08,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:49:08,347 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, 1, 1] [2020-10-20 01:49:08,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:49:08,561 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, checkErr1ASSERT_VIOLATIONERROR_FUNCTION, checkErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:49:08,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:49:08,561 INFO L82 PathProgramCache]: Analyzing trace with hash 2019916412, now seen corresponding path program 1 times [2020-10-20 01:49:08,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:49:08,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624120910] [2020-10-20 01:49:08,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:49:08,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:49:08,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-20 01:49:08,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:49:08,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:49:08,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624120910] [2020-10-20 01:49:08,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97765966] [2020-10-20 01:49:08,695 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 [2020-10-20 01:49:08,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:49:08,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-20 01:49:08,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:49:08,802 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2020-10-20 01:49:08,802 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 01:49:08,805 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 01:49:08,806 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 01:49:08,806 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:7, output treesize:6 [2020-10-20 01:49:10,829 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_check_~a.base_BEFORE_CALL_1 Int)) (= (select |c_#memory_int| v_check_~a.base_BEFORE_CALL_1) ((as const (Array Int Int)) 0))) is different from true [2020-10-20 01:49:10,891 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 01:49:11,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2020-10-20 01:49:11,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 01:49:11,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 9 [2020-10-20 01:49:11,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78808915] [2020-10-20 01:49:11,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 01:49:11,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:49:11,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 01:49:11,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=43, Unknown=1, NotChecked=12, Total=72 [2020-10-20 01:49:11,007 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 9 states. [2020-10-20 01:49:11,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:49:11,110 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2020-10-20 01:49:11,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 01:49:11,111 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-20 01:49:11,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:49:11,111 INFO L225 Difference]: With dead ends: 25 [2020-10-20 01:49:11,111 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 01:49:11,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=38, Invalid=97, Unknown=1, NotChecked=20, Total=156 [2020-10-20 01:49:11,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 01:49:11,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 01:49:11,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 01:49:11,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 01:49:11,113 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2020-10-20 01:49:11,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:49:11,113 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 01:49:11,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 01:49:11,114 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 01:49:11,114 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 01:49:11,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:49:11,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 01:49:11,486 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2020-10-20 01:49:11,496 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 01:49:11,496 INFO L274 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-10-20 01:49:11,497 INFO L274 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-10-20 01:49:11,497 INFO L274 CegarLoopResult]: For program point L7-1(lines 7 9) no Hoare annotation was computed. [2020-10-20 01:49:11,497 INFO L274 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-10-20 01:49:11,497 INFO L274 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-10-20 01:49:11,497 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-20 01:49:11,497 INFO L274 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-10-20 01:49:11,497 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 01:49:11,497 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 01:49:11,498 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-10-20 01:49:11,498 INFO L277 CegarLoopResult]: At program point L53(lines 40 54) the Hoare annotation is: true [2020-10-20 01:49:11,498 INFO L270 CegarLoopResult]: At program point L47(line 47) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= .cse0 (select |#memory_int| |ULTIMATE.start_main_#t~malloc17.base|)) (= (select |#memory_int| ULTIMATE.start_main_~a~0.base) .cse0))) [2020-10-20 01:49:11,498 INFO L274 CegarLoopResult]: For program point L47-1(line 47) no Hoare annotation was computed. [2020-10-20 01:49:11,498 INFO L274 CegarLoopResult]: For program point L10(lines 10 12) no Hoare annotation was computed. [2020-10-20 01:49:11,498 INFO L274 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-10-20 01:49:11,499 INFO L274 CegarLoopResult]: For program point L8-2(line 8) no Hoare annotation was computed. [2020-10-20 01:49:11,499 INFO L277 CegarLoopResult]: At program point checkENTRY(lines 16 38) the Hoare annotation is: true [2020-10-20 01:49:11,499 INFO L274 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-10-20 01:49:11,499 INFO L274 CegarLoopResult]: For program point checkErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-10-20 01:49:11,499 INFO L274 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-10-20 01:49:11,499 INFO L274 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-10-20 01:49:11,499 INFO L274 CegarLoopResult]: For program point L11-2(line 11) no Hoare annotation was computed. [2020-10-20 01:49:11,499 INFO L274 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-10-20 01:49:11,500 INFO L274 CegarLoopResult]: For program point checkFINAL(lines 16 38) no Hoare annotation was computed. [2020-10-20 01:49:11,500 INFO L274 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-10-20 01:49:11,500 INFO L274 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-10-20 01:49:11,500 INFO L274 CegarLoopResult]: For program point L5-2(line 5) no Hoare annotation was computed. [2020-10-20 01:49:11,500 INFO L274 CegarLoopResult]: For program point L5-3(line 5) no Hoare annotation was computed. [2020-10-20 01:49:11,500 INFO L274 CegarLoopResult]: For program point checkErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-10-20 01:49:11,500 INFO L274 CegarLoopResult]: For program point L26(lines 26 27) no Hoare annotation was computed. [2020-10-20 01:49:11,501 INFO L270 CegarLoopResult]: At program point L26-2(lines 26 27) the Hoare annotation is: (let ((.cse2 (= |check_#in~x| 0)) (.cse3 ((as const (Array Int Int)) 0))) (or (and (let ((.cse0 (<= 1 check___VERIFIER_assert_~cond)) (.cse1 (<= (+ check_~y 1) check_~n))) (or (and .cse0 .cse1 (<= 1 check_~x)) (and .cse0 .cse2 .cse1 (= check_~x 0)))) (= (select |#memory_int| check_~a.base) .cse3)) (let ((.cse4 (not (<= (+ |check_#in~y| 1) |check_#in~n|)))) (and (or .cse4 (not .cse2)) (or .cse4 (not (<= 1 |check_#in~x|))))) (not (= (select |#memory_int| |check_#in~a.base|) .cse3)))) [2020-10-20 01:49:11,501 INFO L274 CegarLoopResult]: For program point checkEXIT(lines 16 38) no Hoare annotation was computed. [2020-10-20 01:49:11,501 INFO L274 CegarLoopResult]: For program point L10(lines 10 12) no Hoare annotation was computed. [2020-10-20 01:49:11,501 INFO L274 CegarLoopResult]: For program point L10-1(lines 10 12) no Hoare annotation was computed. [2020-10-20 01:49:11,501 INFO L274 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-10-20 01:49:11,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 01:49:11 BoogieIcfgContainer [2020-10-20 01:49:11,511 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 01:49:11,511 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 01:49:11,511 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 01:49:11,512 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 01:49:11,512 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:49:06" (3/4) ... [2020-10-20 01:49:11,516 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 01:49:11,523 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure check [2020-10-20 01:49:11,528 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2020-10-20 01:49:11,529 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-10-20 01:49:11,529 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-20 01:49:11,529 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 01:49:11,597 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 01:49:11,597 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 01:49:11,599 INFO L168 Benchmark]: Toolchain (without parser) took 5751.04 ms. Allocated memory was 35.1 MB in the beginning and 56.6 MB in the end (delta: 21.5 MB). Free memory was 12.6 MB in the beginning and 25.1 MB in the end (delta: -12.5 MB). Peak memory consumption was 9.0 MB. Max. memory is 14.3 GB. [2020-10-20 01:49:11,599 INFO L168 Benchmark]: CDTParser took 0.69 ms. Allocated memory is still 33.6 MB. Free memory was 18.8 MB in the beginning and 18.8 MB in the end (delta: 31.5 kB). Peak memory consumption was 31.5 kB. Max. memory is 14.3 GB. [2020-10-20 01:49:11,605 INFO L168 Benchmark]: CACSL2BoogieTranslator took 356.33 ms. Allocated memory was 35.1 MB in the beginning and 44.6 MB in the end (delta: 9.4 MB). Free memory was 11.6 MB in the beginning and 23.3 MB in the end (delta: -11.6 MB). Peak memory consumption was 9.7 MB. Max. memory is 14.3 GB. [2020-10-20 01:49:11,605 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.44 ms. Allocated memory is still 44.6 MB. Free memory was 23.3 MB in the beginning and 21.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. [2020-10-20 01:49:11,606 INFO L168 Benchmark]: Boogie Preprocessor took 27.82 ms. Allocated memory is still 44.6 MB. Free memory was 21.1 MB in the beginning and 19.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 01:49:11,608 INFO L168 Benchmark]: RCFGBuilder took 402.90 ms. Allocated memory was 44.6 MB in the beginning and 46.7 MB in the end (delta: 2.1 MB). Free memory was 19.6 MB in the beginning and 12.6 MB in the end (delta: 7.0 MB). Peak memory consumption was 9.1 MB. Max. memory is 14.3 GB. [2020-10-20 01:49:11,612 INFO L168 Benchmark]: TraceAbstraction took 4823.24 ms. Allocated memory was 46.7 MB in the beginning and 56.6 MB in the end (delta: 10.0 MB). Free memory was 12.1 MB in the beginning and 29.4 MB in the end (delta: -17.3 MB). Peak memory consumption was 11.6 MB. Max. memory is 14.3 GB. [2020-10-20 01:49:11,612 INFO L168 Benchmark]: Witness Printer took 85.93 ms. Allocated memory is still 56.6 MB. Free memory was 29.4 MB in the beginning and 25.1 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 14.3 GB. [2020-10-20 01:49:11,618 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.69 ms. Allocated memory is still 33.6 MB. Free memory was 18.8 MB in the beginning and 18.8 MB in the end (delta: 31.5 kB). Peak memory consumption was 31.5 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 356.33 ms. Allocated memory was 35.1 MB in the beginning and 44.6 MB in the end (delta: 9.4 MB). Free memory was 11.6 MB in the beginning and 23.3 MB in the end (delta: -11.6 MB). Peak memory consumption was 9.7 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 44.44 ms. Allocated memory is still 44.6 MB. Free memory was 23.3 MB in the beginning and 21.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 27.82 ms. Allocated memory is still 44.6 MB. Free memory was 21.1 MB in the beginning and 19.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * RCFGBuilder took 402.90 ms. Allocated memory was 44.6 MB in the beginning and 46.7 MB in the end (delta: 2.1 MB). Free memory was 19.6 MB in the beginning and 12.6 MB in the end (delta: 7.0 MB). Peak memory consumption was 9.1 MB. Max. memory is 14.3 GB. * TraceAbstraction took 4823.24 ms. Allocated memory was 46.7 MB in the beginning and 56.6 MB in the end (delta: 10.0 MB). Free memory was 12.1 MB in the beginning and 29.4 MB in the end (delta: -17.3 MB). Peak memory consumption was 11.6 MB. Max. memory is 14.3 GB. * Witness Printer took 85.93 ms. Allocated memory is still 56.6 MB. Free memory was 29.4 MB in the beginning and 25.1 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 36 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.5s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 146 SDtfs, 195 SDslu, 270 SDs, 0 SdLazy, 197 SolverSat, 76 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=2, 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, 40 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 10 PreInvPairs, 14 NumberOfFragments, 81 HoareAnnotationTreeSize, 10 FomulaSimplifications, 8 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 107 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 118 ConstructedInterpolants, 4 QuantifiedInterpolants, 8782 SizeOfPredicates, 23 NumberOfNonLiveVariables, 321 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 2/10 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...