./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/nested6.i --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/loop-invgen/nested6.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 b3a725921be8310e882457f7f33c9ff7dbee0bc2 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 01:00:32,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 01:00:32,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 01:00:32,449 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 01:00:32,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 01:00:32,451 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 01:00:32,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 01:00:32,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 01:00:32,456 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 01:00:32,457 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 01:00:32,458 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 01:00:32,459 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 01:00:32,459 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 01:00:32,460 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 01:00:32,461 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 01:00:32,462 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 01:00:32,463 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 01:00:32,464 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 01:00:32,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 01:00:32,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 01:00:32,469 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 01:00:32,477 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 01:00:32,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 01:00:32,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 01:00:32,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 01:00:32,482 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 01:00:32,482 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 01:00:32,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 01:00:32,483 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 01:00:32,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 01:00:32,484 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 01:00:32,485 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 01:00:32,486 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 01:00:32,487 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 01:00:32,488 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 01:00:32,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 01:00:32,489 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 01:00:32,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 01:00:32,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 01:00:32,490 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 01:00:32,491 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 01:00:32,492 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 01:00:32,530 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 01:00:32,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 01:00:32,533 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 01:00:32,533 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 01:00:32,533 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 01:00:32,534 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 01:00:32,534 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 01:00:32,534 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 01:00:32,534 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 01:00:32,535 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 01:00:32,536 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 01:00:32,536 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 01:00:32,536 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 01:00:32,537 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 01:00:32,537 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 01:00:32,537 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 01:00:32,537 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 01:00:32,538 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 01:00:32,539 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 01:00:32,539 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 01:00:32,539 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 01:00:32,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:00:32,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 01:00:32,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 01:00:32,540 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 01:00:32,541 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 01:00:32,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 01:00:32,541 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 01:00:32,541 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 01:00:32,542 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 -> b3a725921be8310e882457f7f33c9ff7dbee0bc2 [2020-10-20 01:00:32,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 01:00:32,767 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 01:00:32,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 01:00:32,774 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 01:00:32,775 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 01:00:32,776 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/nested6.i [2020-10-20 01:00:32,864 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4c867fa8/71af1461fd8a4b0483a2e1bd1804a7f4/FLAGa948e9b3b [2020-10-20 01:00:33,346 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 01:00:33,347 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/nested6.i [2020-10-20 01:00:33,354 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4c867fa8/71af1461fd8a4b0483a2e1bd1804a7f4/FLAGa948e9b3b [2020-10-20 01:00:33,686 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4c867fa8/71af1461fd8a4b0483a2e1bd1804a7f4 [2020-10-20 01:00:33,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 01:00:33,696 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 01:00:33,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 01:00:33,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 01:00:33,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 01:00:33,702 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:00:33" (1/1) ... [2020-10-20 01:00:33,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49a3d1b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:33, skipping insertion in model container [2020-10-20 01:00:33,705 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:00:33" (1/1) ... [2020-10-20 01:00:33,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 01:00:33,733 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 01:00:33,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:00:33,991 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 01:00:34,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:00:34,027 INFO L208 MainTranslator]: Completed translation [2020-10-20 01:00:34,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:34 WrapperNode [2020-10-20 01:00:34,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 01:00:34,029 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 01:00:34,029 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 01:00:34,029 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 01:00:34,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:34" (1/1) ... [2020-10-20 01:00:34,043 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:34" (1/1) ... [2020-10-20 01:00:34,065 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 01:00:34,065 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 01:00:34,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 01:00:34,066 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 01:00:34,075 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:34" (1/1) ... [2020-10-20 01:00:34,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:34" (1/1) ... [2020-10-20 01:00:34,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:34" (1/1) ... [2020-10-20 01:00:34,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:34" (1/1) ... [2020-10-20 01:00:34,082 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:34" (1/1) ... [2020-10-20 01:00:34,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:34" (1/1) ... [2020-10-20 01:00:34,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:34" (1/1) ... [2020-10-20 01:00:34,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 01:00:34,091 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 01:00:34,091 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 01:00:34,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 01:00:34,092 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:34" (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 01:00:34,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 01:00:34,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 01:00:34,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 01:00:34,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 01:00:34,421 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 01:00:34,421 INFO L298 CfgBuilder]: Removed 19 assume(true) statements. [2020-10-20 01:00:34,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:00:34 BoogieIcfgContainer [2020-10-20 01:00:34,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 01:00:34,424 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 01:00:34,424 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 01:00:34,428 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 01:00:34,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 01:00:33" (1/3) ... [2020-10-20 01:00:34,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d310593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:00:34, skipping insertion in model container [2020-10-20 01:00:34,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:34" (2/3) ... [2020-10-20 01:00:34,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d310593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:00:34, skipping insertion in model container [2020-10-20 01:00:34,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:00:34" (3/3) ... [2020-10-20 01:00:34,431 INFO L111 eAbstractionObserver]: Analyzing ICFG nested6.i [2020-10-20 01:00:34,443 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 01:00:34,450 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-20 01:00:34,468 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-20 01:00:34,540 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 01:00:34,540 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 01:00:34,540 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 01:00:34,540 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 01:00:34,541 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 01:00:34,541 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 01:00:34,541 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 01:00:34,541 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 01:00:34,570 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-20 01:00:34,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 01:00:34,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:00:34,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:00:34,580 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:00:34,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:00:34,599 INFO L82 PathProgramCache]: Analyzing trace with hash 34097461, now seen corresponding path program 1 times [2020-10-20 01:00:34,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:00:34,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530774482] [2020-10-20 01:00:34,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:00:34,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:00:34,816 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 01:00:34,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530774482] [2020-10-20 01:00:34,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:00:34,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:00:34,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443710520] [2020-10-20 01:00:34,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 01:00:34,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:00:34,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 01:00:34,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 01:00:34,844 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 4 states. [2020-10-20 01:00:34,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:00:34,958 INFO L93 Difference]: Finished difference Result 72 states and 102 transitions. [2020-10-20 01:00:34,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 01:00:34,960 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-20 01:00:34,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:00:34,970 INFO L225 Difference]: With dead ends: 72 [2020-10-20 01:00:34,971 INFO L226 Difference]: Without dead ends: 30 [2020-10-20 01:00:34,974 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 [2020-10-20 01:00:34,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-20 01:00:35,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 24. [2020-10-20 01:00:35,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-20 01:00:35,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-10-20 01:00:35,007 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 12 [2020-10-20 01:00:35,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:00:35,007 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-10-20 01:00:35,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 01:00:35,007 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-10-20 01:00:35,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 01:00:35,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:00:35,008 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:00:35,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 01:00:35,009 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:00:35,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:00:35,009 INFO L82 PathProgramCache]: Analyzing trace with hash 85566779, now seen corresponding path program 1 times [2020-10-20 01:00:35,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:00:35,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773192430] [2020-10-20 01:00:35,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:00:35,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:00:35,079 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 01:00:35,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773192430] [2020-10-20 01:00:35,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:00:35,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:00:35,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425452247] [2020-10-20 01:00:35,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:00:35,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:00:35,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:00:35,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:00:35,085 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 5 states. [2020-10-20 01:00:35,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:00:35,230 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2020-10-20 01:00:35,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 01:00:35,231 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-20 01:00:35,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:00:35,232 INFO L225 Difference]: With dead ends: 44 [2020-10-20 01:00:35,232 INFO L226 Difference]: Without dead ends: 40 [2020-10-20 01:00:35,233 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 01:00:35,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-20 01:00:35,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 20. [2020-10-20 01:00:35,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-20 01:00:35,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-10-20 01:00:35,240 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 13 [2020-10-20 01:00:35,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:00:35,240 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-10-20 01:00:35,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:00:35,241 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-10-20 01:00:35,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 01:00:35,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:00:35,242 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:00:35,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 01:00:35,242 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:00:35,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:00:35,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1206597064, now seen corresponding path program 1 times [2020-10-20 01:00:35,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:00:35,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272368582] [2020-10-20 01:00:35,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:00:35,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:00:35,300 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 01:00:35,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272368582] [2020-10-20 01:00:35,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:00:35,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:00:35,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363873690] [2020-10-20 01:00:35,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 01:00:35,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:00:35,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 01:00:35,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 01:00:35,308 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 4 states. [2020-10-20 01:00:35,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:00:35,394 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2020-10-20 01:00:35,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 01:00:35,395 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-20 01:00:35,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:00:35,396 INFO L225 Difference]: With dead ends: 42 [2020-10-20 01:00:35,396 INFO L226 Difference]: Without dead ends: 38 [2020-10-20 01:00:35,397 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 [2020-10-20 01:00:35,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-20 01:00:35,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2020-10-20 01:00:35,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-20 01:00:35,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2020-10-20 01:00:35,405 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 14 [2020-10-20 01:00:35,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:00:35,406 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2020-10-20 01:00:35,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 01:00:35,406 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2020-10-20 01:00:35,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 01:00:35,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:00:35,407 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:00:35,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 01:00:35,408 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:00:35,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:00:35,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1979855453, now seen corresponding path program 1 times [2020-10-20 01:00:35,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:00:35,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210057421] [2020-10-20 01:00:35,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:00:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:00:35,473 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 01:00:35,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210057421] [2020-10-20 01:00:35,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972767853] [2020-10-20 01:00:35,474 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 01:00:35,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:00:35,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 01:00:35,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:00:35,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:00:35,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 01:00:35,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2020-10-20 01:00:35,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811333772] [2020-10-20 01:00:35,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:00:35,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:00:35,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:00:35,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-20 01:00:35,732 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 5 states. [2020-10-20 01:00:35,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:00:35,855 INFO L93 Difference]: Finished difference Result 86 states and 105 transitions. [2020-10-20 01:00:35,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 01:00:35,856 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-20 01:00:35,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:00:35,857 INFO L225 Difference]: With dead ends: 86 [2020-10-20 01:00:35,857 INFO L226 Difference]: Without dead ends: 63 [2020-10-20 01:00:35,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-20 01:00:35,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-20 01:00:35,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 32. [2020-10-20 01:00:35,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-20 01:00:35,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-10-20 01:00:35,867 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 18 [2020-10-20 01:00:35,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:00:35,867 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-10-20 01:00:35,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:00:35,867 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-10-20 01:00:35,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 01:00:35,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:00:35,868 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:00:36,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:00:36,083 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:00:36,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:00:36,083 INFO L82 PathProgramCache]: Analyzing trace with hash -535634136, now seen corresponding path program 1 times [2020-10-20 01:00:36,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:00:36,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855267432] [2020-10-20 01:00:36,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:00:36,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:00:36,158 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 01:00:36,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855267432] [2020-10-20 01:00:36,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338571591] [2020-10-20 01:00:36,159 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 01:00:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:00:36,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 01:00:36,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:00:36,266 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 01:00:36,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 01:00:36,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2020-10-20 01:00:36,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953453638] [2020-10-20 01:00:36,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-20 01:00:36,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:00:36,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-20 01:00:36,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-20 01:00:36,268 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 11 states. [2020-10-20 01:00:36,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:00:36,875 INFO L93 Difference]: Finished difference Result 76 states and 98 transitions. [2020-10-20 01:00:36,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-20 01:00:36,875 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-20 01:00:36,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:00:36,876 INFO L225 Difference]: With dead ends: 76 [2020-10-20 01:00:36,876 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 01:00:36,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=316, Invalid=944, Unknown=0, NotChecked=0, Total=1260 [2020-10-20 01:00:36,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 01:00:36,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 01:00:36,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 01:00:36,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 01:00:36,878 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-10-20 01:00:36,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:00:36,878 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 01:00:36,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-20 01:00:36,879 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 01:00:36,879 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 01:00:37,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:00:37,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 01:00:37,376 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 19 [2020-10-20 01:00:37,505 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 27 [2020-10-20 01:00:37,738 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-20 01:00:37,738 INFO L274 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-10-20 01:00:37,739 INFO L274 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-10-20 01:00:37,739 INFO L274 CegarLoopResult]: For program point L19-2(line 19) no Hoare annotation was computed. [2020-10-20 01:00:37,739 INFO L270 CegarLoopResult]: At program point L36-2(lines 36 38) the Hoare annotation is: (let ((.cse2 (* 2 ULTIMATE.start_main_~i~0))) (let ((.cse1 (<= .cse2 ULTIMATE.start_main_~k~0))) (or (let ((.cse0 (div (* ULTIMATE.start_main_~j~0 (- 1)) (- 2)))) (and (<= .cse0 0) (= ULTIMATE.start_main_~i~0 0) (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~j~0) .cse1 (<= (+ .cse0 1) ULTIMATE.start_main_~n~0))) (and (<= .cse2 ULTIMATE.start_main_~j~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= (+ ULTIMATE.start_main_~j~0 1) ULTIMATE.start_main_~n~0) (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~n~0) .cse1)))) [2020-10-20 01:00:37,739 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 01:00:37,739 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 01:00:37,739 INFO L274 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-10-20 01:00:37,740 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-10-20 01:00:37,740 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-20 01:00:37,740 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-10-20 01:00:37,741 INFO L274 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed. [2020-10-20 01:00:37,741 INFO L274 CegarLoopResult]: For program point L12-6(line 12) no Hoare annotation was computed. [2020-10-20 01:00:37,741 INFO L274 CegarLoopResult]: For program point L12-7(line 12) no Hoare annotation was computed. [2020-10-20 01:00:37,741 INFO L274 CegarLoopResult]: For program point L12-8(line 12) no Hoare annotation was computed. [2020-10-20 01:00:37,741 INFO L274 CegarLoopResult]: For program point L12-10(line 12) no Hoare annotation was computed. [2020-10-20 01:00:37,741 INFO L274 CegarLoopResult]: For program point L12-11(line 12) no Hoare annotation was computed. [2020-10-20 01:00:37,742 INFO L274 CegarLoopResult]: For program point L29(lines 29 32) no Hoare annotation was computed. [2020-10-20 01:00:37,742 INFO L274 CegarLoopResult]: For program point L29-1(lines 29 32) no Hoare annotation was computed. [2020-10-20 01:00:37,742 INFO L277 CegarLoopResult]: At program point L46(lines 24 48) the Hoare annotation is: true [2020-10-20 01:00:37,742 INFO L277 CegarLoopResult]: At program point L47(lines 24 48) the Hoare annotation is: true [2020-10-20 01:00:37,742 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-20 01:00:37,742 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-20 01:00:37,742 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 01:00:37,743 INFO L274 CegarLoopResult]: For program point L33-2(lines 33 45) no Hoare annotation was computed. [2020-10-20 01:00:37,743 INFO L270 CegarLoopResult]: At program point L33-3(lines 33 45) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~k~0)) (.cse1 (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~n~0))) (or (and (= ULTIMATE.start_main_~i~0 0) .cse0 .cse1) (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) .cse0 (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~j~0) .cse1))) [2020-10-20 01:00:37,744 INFO L270 CegarLoopResult]: At program point L34-2(lines 34 44) the Hoare annotation is: (let ((.cse0 (<= (* 2 ULTIMATE.start_main_~i~0) ULTIMATE.start_main_~j~0)) (.cse1 (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~k~0)) (.cse2 (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~n~0))) (or (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) .cse0 .cse1 .cse2) (let ((.cse3 (div (* ULTIMATE.start_main_~j~0 (- 1)) (- 2)))) (and (<= .cse3 0) .cse0 .cse1 (= ULTIMATE.start_main_~i~0 0) .cse2 (<= (+ .cse3 1) ULTIMATE.start_main_~n~0))))) [2020-10-20 01:00:37,744 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-20 01:00:37,744 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-10-20 01:00:37,744 INFO L270 CegarLoopResult]: At program point L18-2(lines 1 48) the Hoare annotation is: (let ((.cse0 (* 2 ULTIMATE.start_main_~i~0))) (and (<= .cse0 ULTIMATE.start_main_~j~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= (+ ULTIMATE.start_main_~k~0 1) ULTIMATE.start_main_~n~0) (<= (+ ULTIMATE.start_main_~j~0 1) ULTIMATE.start_main_~n~0) (<= .cse0 ULTIMATE.start_main_~k~0))) [2020-10-20 01:00:37,745 INFO L274 CegarLoopResult]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2020-10-20 01:00:37,745 INFO L270 CegarLoopResult]: At program point L18-5(lines 17 22) the Hoare annotation is: (and (<= (* 2 ULTIMATE.start_main_~i~0) ULTIMATE.start_main_~j~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~k~0) (<= (+ ULTIMATE.start_main_~j~0 1) ULTIMATE.start_main_~n~0) (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~n~0)) [2020-10-20 01:00:37,745 INFO L274 CegarLoopResult]: For program point L18-6(lines 18 20) no Hoare annotation was computed. [2020-10-20 01:00:37,745 INFO L270 CegarLoopResult]: At program point L18-8(lines 1 48) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= (* 2 ULTIMATE.start_main_~i~0) ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~k~0) (<= (+ ULTIMATE.start_main_~j~0 1) ULTIMATE.start_main_~n~0) (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~n~0)) [2020-10-20 01:00:37,746 INFO L274 CegarLoopResult]: For program point L35(lines 35 43) no Hoare annotation was computed. [2020-10-20 01:00:37,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 01:00:37 BoogieIcfgContainer [2020-10-20 01:00:37,770 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 01:00:37,770 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 01:00:37,770 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 01:00:37,771 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 01:00:37,771 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:00:34" (3/4) ... [2020-10-20 01:00:37,775 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 01:00:37,787 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-10-20 01:00:37,788 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 01:00:37,788 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 01:00:37,788 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 01:00:37,863 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 01:00:37,864 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 01:00:37,866 INFO L168 Benchmark]: Toolchain (without parser) took 4174.57 ms. Allocated memory was 35.7 MB in the beginning and 62.4 MB in the end (delta: 26.7 MB). Free memory was 15.6 MB in the beginning and 32.8 MB in the end (delta: -17.2 MB). Peak memory consumption was 9.6 MB. Max. memory is 14.3 GB. [2020-10-20 01:00:37,866 INFO L168 Benchmark]: CDTParser took 0.94 ms. Allocated memory is still 33.6 MB. Free memory was 9.4 MB in the beginning and 9.4 MB in the end (delta: 43.6 kB). Peak memory consumption was 43.6 kB. Max. memory is 14.3 GB. [2020-10-20 01:00:37,867 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.31 ms. Allocated memory was 35.7 MB in the beginning and 44.6 MB in the end (delta: 8.9 MB). Free memory was 14.8 MB in the beginning and 25.9 MB in the end (delta: -11.1 MB). Peak memory consumption was 10.6 MB. Max. memory is 14.3 GB. [2020-10-20 01:00:37,867 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.43 ms. Allocated memory is still 44.6 MB. Free memory was 25.9 MB in the beginning and 24.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 01:00:37,868 INFO L168 Benchmark]: Boogie Preprocessor took 25.55 ms. Allocated memory is still 44.6 MB. Free memory was 24.0 MB in the beginning and 22.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-20 01:00:37,873 INFO L168 Benchmark]: RCFGBuilder took 331.80 ms. Allocated memory was 44.6 MB in the beginning and 46.1 MB in the end (delta: 1.6 MB). Free memory was 22.6 MB in the beginning and 18.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 10.1 MB. Max. memory is 14.3 GB. [2020-10-20 01:00:37,876 INFO L168 Benchmark]: TraceAbstraction took 3345.43 ms. Allocated memory was 46.1 MB in the beginning and 62.4 MB in the end (delta: 16.3 MB). Free memory was 18.0 MB in the beginning and 36.8 MB in the end (delta: -18.9 MB). Peak memory consumption was 19.7 MB. Max. memory is 14.3 GB. [2020-10-20 01:00:37,876 INFO L168 Benchmark]: Witness Printer took 93.67 ms. Allocated memory is still 62.4 MB. Free memory was 36.8 MB in the beginning and 32.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 14.3 GB. [2020-10-20 01:00:37,882 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.94 ms. Allocated memory is still 33.6 MB. Free memory was 9.4 MB in the beginning and 9.4 MB in the end (delta: 43.6 kB). Peak memory consumption was 43.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 330.31 ms. Allocated memory was 35.7 MB in the beginning and 44.6 MB in the end (delta: 8.9 MB). Free memory was 14.8 MB in the beginning and 25.9 MB in the end (delta: -11.1 MB). Peak memory consumption was 10.6 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 36.43 ms. Allocated memory is still 44.6 MB. Free memory was 25.9 MB in the beginning and 24.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 25.55 ms. Allocated memory is still 44.6 MB. Free memory was 24.0 MB in the beginning and 22.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 331.80 ms. Allocated memory was 44.6 MB in the beginning and 46.1 MB in the end (delta: 1.6 MB). Free memory was 22.6 MB in the beginning and 18.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 10.1 MB. Max. memory is 14.3 GB. * TraceAbstraction took 3345.43 ms. Allocated memory was 46.1 MB in the beginning and 62.4 MB in the end (delta: 16.3 MB). Free memory was 18.0 MB in the beginning and 36.8 MB in the end (delta: -18.9 MB). Peak memory consumption was 19.7 MB. Max. memory is 14.3 GB. * Witness Printer took 93.67 ms. Allocated memory is still 62.4 MB. Free memory was 36.8 MB in the beginning and 32.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - 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 3 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: (((!(0 == cond) && 2 * i <= j) && n <= k) && j + 1 <= n) && k <= n - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: (((2 * i <= j && !(0 == cond)) && k + 1 <= n) && j + 1 <= n) && 2 * i <= k - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((!(0 == cond) && 2 * i <= j) && n <= k) && k <= n) || (((((j * -1 / -2 <= 0 && 2 * i <= j) && n <= k) && i == 0) && k <= n) && j * -1 / -2 + 1 <= n) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((j * -1 / -2 <= 0 && i == 0) && k <= j) && 2 * i <= k) && j * -1 / -2 + 1 <= n) || ((((2 * i <= j && !(0 == cond)) && j + 1 <= n) && k <= n) && 2 * i <= k) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((2 * i <= j && !(0 == cond)) && n <= k) && j + 1 <= n) && k <= n - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: ((i == 0 && n <= k) && k <= n) || (((!(0 == cond) && n <= k) && n <= j) && k <= n) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 100 SDtfs, 184 SDslu, 141 SDs, 0 SdLazy, 285 SolverSat, 109 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, 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, 67 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 47 NumberOfFragments, 194 HoareAnnotationTreeSize, 8 FomulaSimplifications, 6391 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 1728 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 110 ConstructedInterpolants, 1 QuantifiedInterpolants, 5204 SizeOfPredicates, 7 NumberOfNonLiveVariables, 146 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 4/10 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...