./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/nested9.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_db074246-a0b3-4b37-a050-a31b25c468f7/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_db074246-a0b3-4b37-a050-a31b25c468f7/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_db074246-a0b3-4b37-a050-a31b25c468f7/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_db074246-a0b3-4b37-a050-a31b25c468f7/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invgen/nested9.i -s /tmp/vcloud-vcloud-master/worker/run_dir_db074246-a0b3-4b37-a050-a31b25c468f7/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_db074246-a0b3-4b37-a050-a31b25c468f7/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 041ac1710be6e1a9f4a6c44510c9851574d3d115 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 18:50:32,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 18:50:32,955 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 18:50:32,962 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 18:50:32,963 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 18:50:32,963 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 18:50:32,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 18:50:32,966 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 18:50:32,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 18:50:32,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 18:50:32,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 18:50:32,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 18:50:32,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 18:50:32,970 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 18:50:32,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 18:50:32,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 18:50:32,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 18:50:32,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 18:50:32,974 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 18:50:32,976 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 18:50:32,977 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 18:50:32,978 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 18:50:32,978 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 18:50:32,979 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 18:50:32,981 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 18:50:32,981 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 18:50:32,981 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 18:50:32,981 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 18:50:32,982 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 18:50:32,982 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 18:50:32,982 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 18:50:32,983 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 18:50:32,983 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 18:50:32,984 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 18:50:32,984 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 18:50:32,985 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 18:50:32,985 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 18:50:32,985 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 18:50:32,985 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 18:50:32,986 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 18:50:32,986 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 18:50:32,987 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_db074246-a0b3-4b37-a050-a31b25c468f7/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 18:50:32,996 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 18:50:32,996 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 18:50:32,997 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 18:50:32,997 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 18:50:32,997 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 18:50:32,997 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 18:50:32,997 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 18:50:32,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 18:50:32,998 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 18:50:32,998 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 18:50:32,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 18:50:32,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 18:50:32,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 18:50:32,998 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 18:50:32,998 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 18:50:32,998 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 18:50:32,998 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 18:50:32,999 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 18:50:32,999 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 18:50:32,999 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 18:50:32,999 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 18:50:32,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 18:50:32,999 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 18:50:32,999 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 18:50:33,000 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 18:50:33,000 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 18:50:33,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 18:50:33,000 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 18:50:33,000 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 18:50:33,000 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_db074246-a0b3-4b37-a050-a31b25c468f7/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_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 -> 041ac1710be6e1a9f4a6c44510c9851574d3d115 [2019-12-07 18:50:33,102 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 18:50:33,110 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 18:50:33,112 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 18:50:33,113 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 18:50:33,114 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 18:50:33,114 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_db074246-a0b3-4b37-a050-a31b25c468f7/bin/uautomizer/../../sv-benchmarks/c/loop-invgen/nested9.i [2019-12-07 18:50:33,152 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_db074246-a0b3-4b37-a050-a31b25c468f7/bin/uautomizer/data/990969938/0268913f0120454bb2fdbd2f9a4d5243/FLAGc65a611b8 [2019-12-07 18:50:33,520 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 18:50:33,521 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_db074246-a0b3-4b37-a050-a31b25c468f7/sv-benchmarks/c/loop-invgen/nested9.i [2019-12-07 18:50:33,525 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_db074246-a0b3-4b37-a050-a31b25c468f7/bin/uautomizer/data/990969938/0268913f0120454bb2fdbd2f9a4d5243/FLAGc65a611b8 [2019-12-07 18:50:33,908 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_db074246-a0b3-4b37-a050-a31b25c468f7/bin/uautomizer/data/990969938/0268913f0120454bb2fdbd2f9a4d5243 [2019-12-07 18:50:33,910 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 18:50:33,911 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 18:50:33,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 18:50:33,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 18:50:33,915 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 18:50:33,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:50:33" (1/1) ... [2019-12-07 18:50:33,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19e4069c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:50:33, skipping insertion in model container [2019-12-07 18:50:33,917 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:50:33" (1/1) ... [2019-12-07 18:50:33,922 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 18:50:33,935 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 18:50:34,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:50:34,047 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 18:50:34,088 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:50:34,097 INFO L208 MainTranslator]: Completed translation [2019-12-07 18:50:34,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:50:34 WrapperNode [2019-12-07 18:50:34,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 18:50:34,098 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 18:50:34,098 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 18:50:34,098 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 18:50:34,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:50:34" (1/1) ... [2019-12-07 18:50:34,107 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:50:34" (1/1) ... [2019-12-07 18:50:34,120 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 18:50:34,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 18:50:34,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 18:50:34,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 18:50:34,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:50:34" (1/1) ... [2019-12-07 18:50:34,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:50:34" (1/1) ... [2019-12-07 18:50:34,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:50:34" (1/1) ... [2019-12-07 18:50:34,127 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:50:34" (1/1) ... [2019-12-07 18:50:34,129 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:50:34" (1/1) ... [2019-12-07 18:50:34,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:50:34" (1/1) ... [2019-12-07 18:50:34,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:50:34" (1/1) ... [2019-12-07 18:50:34,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 18:50:34,134 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 18:50:34,134 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 18:50:34,134 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 18:50:34,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:50:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db074246-a0b3-4b37-a050-a31b25c468f7/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 18:50:34,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 18:50:34,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 18:50:34,291 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 18:50:34,291 INFO L287 CfgBuilder]: Removed 9 assume(true) statements. [2019-12-07 18:50:34,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:50:34 BoogieIcfgContainer [2019-12-07 18:50:34,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 18:50:34,292 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 18:50:34,292 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 18:50:34,294 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 18:50:34,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 06:50:33" (1/3) ... [2019-12-07 18:50:34,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e6f23a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:50:34, skipping insertion in model container [2019-12-07 18:50:34,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:50:34" (2/3) ... [2019-12-07 18:50:34,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e6f23a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:50:34, skipping insertion in model container [2019-12-07 18:50:34,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:50:34" (3/3) ... [2019-12-07 18:50:34,296 INFO L109 eAbstractionObserver]: Analyzing ICFG nested9.i [2019-12-07 18:50:34,303 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 18:50:34,306 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 18:50:34,314 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 18:50:34,328 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 18:50:34,328 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 18:50:34,328 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 18:50:34,328 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 18:50:34,329 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 18:50:34,329 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 18:50:34,329 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 18:50:34,329 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 18:50:34,338 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-12-07 18:50:34,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 18:50:34,342 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:50:34,343 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:50:34,343 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:50:34,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:50:34,347 INFO L82 PathProgramCache]: Analyzing trace with hash -331449283, now seen corresponding path program 1 times [2019-12-07 18:50:34,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:50:34,352 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859506273] [2019-12-07 18:50:34,353 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:50:34,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:50:34,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:50:34,480 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859506273] [2019-12-07 18:50:34,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:50:34,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-12-07 18:50:34,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832286710] [2019-12-07 18:50:34,485 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 18:50:34,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:50:34,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 18:50:34,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-12-07 18:50:34,495 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 6 states. [2019-12-07 18:50:34,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:50:34,642 INFO L93 Difference]: Finished difference Result 57 states and 88 transitions. [2019-12-07 18:50:34,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 18:50:34,643 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-12-07 18:50:34,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:50:34,649 INFO L225 Difference]: With dead ends: 57 [2019-12-07 18:50:34,649 INFO L226 Difference]: Without dead ends: 32 [2019-12-07 18:50:34,651 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2019-12-07 18:50:34,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-12-07 18:50:34,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 22. [2019-12-07 18:50:34,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-12-07 18:50:34,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2019-12-07 18:50:34,675 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 12 [2019-12-07 18:50:34,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:50:34,675 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2019-12-07 18:50:34,675 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 18:50:34,675 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2019-12-07 18:50:34,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 18:50:34,676 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:50:34,676 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:50:34,676 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:50:34,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:50:34,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1296087111, now seen corresponding path program 1 times [2019-12-07 18:50:34,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:50:34,677 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519019802] [2019-12-07 18:50:34,677 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:50:34,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:50:34,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:50:34,716 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519019802] [2019-12-07 18:50:34,716 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967755711] [2019-12-07 18:50:34,716 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db074246-a0b3-4b37-a050-a31b25c468f7/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:50:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:50:34,742 INFO L264 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 18:50:34,746 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:50:34,788 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 18:50:34,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:50:34,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-07 18:50:34,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 10 [2019-12-07 18:50:34,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769137660] [2019-12-07 18:50:34,803 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 18:50:34,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:50:34,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 18:50:34,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-12-07 18:50:34,803 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 7 states. [2019-12-07 18:50:34,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:50:34,882 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2019-12-07 18:50:34,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 18:50:34,883 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2019-12-07 18:50:34,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:50:34,884 INFO L225 Difference]: With dead ends: 40 [2019-12-07 18:50:34,884 INFO L226 Difference]: Without dead ends: 38 [2019-12-07 18:50:34,885 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2019-12-07 18:50:34,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-12-07 18:50:34,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 24. [2019-12-07 18:50:34,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-12-07 18:50:34,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2019-12-07 18:50:34,889 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 15 [2019-12-07 18:50:34,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:50:34,890 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2019-12-07 18:50:34,890 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 18:50:34,890 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2019-12-07 18:50:34,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-07 18:50:34,890 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:50:34,890 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:50:35,091 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:50:35,091 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:50:35,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:50:35,091 INFO L82 PathProgramCache]: Analyzing trace with hash 29741143, now seen corresponding path program 1 times [2019-12-07 18:50:35,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:50:35,092 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506229270] [2019-12-07 18:50:35,092 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:50:35,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:50:35,143 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:50:35,144 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506229270] [2019-12-07 18:50:35,144 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143399104] [2019-12-07 18:50:35,144 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db074246-a0b3-4b37-a050-a31b25c468f7/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:50:35,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:50:35,167 INFO L264 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 18:50:35,168 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:50:35,221 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:50:35,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:50:35,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2019-12-07 18:50:35,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283813280] [2019-12-07 18:50:35,222 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-12-07 18:50:35,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:50:35,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-12-07 18:50:35,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2019-12-07 18:50:35,223 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand 13 states. [2019-12-07 18:50:35,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:50:35,634 INFO L93 Difference]: Finished difference Result 78 states and 104 transitions. [2019-12-07 18:50:35,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-12-07 18:50:35,635 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 18 [2019-12-07 18:50:35,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:50:35,636 INFO L225 Difference]: With dead ends: 78 [2019-12-07 18:50:35,636 INFO L226 Difference]: Without dead ends: 62 [2019-12-07 18:50:35,637 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=267, Invalid=855, Unknown=0, NotChecked=0, Total=1122 [2019-12-07 18:50:35,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2019-12-07 18:50:35,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 35. [2019-12-07 18:50:35,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-12-07 18:50:35,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2019-12-07 18:50:35,645 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 18 [2019-12-07 18:50:35,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:50:35,645 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2019-12-07 18:50:35,645 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-12-07 18:50:35,645 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2019-12-07 18:50:35,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-12-07 18:50:35,646 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:50:35,646 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:50:35,847 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:50:35,848 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:50:35,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:50:35,848 INFO L82 PathProgramCache]: Analyzing trace with hash 327524963, now seen corresponding path program 1 times [2019-12-07 18:50:35,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:50:35,849 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459407447] [2019-12-07 18:50:35,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:50:35,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:50:35,966 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 18:50:35,967 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459407447] [2019-12-07 18:50:35,967 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108462695] [2019-12-07 18:50:35,967 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db074246-a0b3-4b37-a050-a31b25c468f7/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:50:35,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:50:35,989 INFO L264 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 18:50:35,990 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:50:36,037 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-12-07 18:50:36,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-07 18:50:36,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 16 [2019-12-07 18:50:36,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473115929] [2019-12-07 18:50:36,038 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 18:50:36,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:50:36,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 18:50:36,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2019-12-07 18:50:36,039 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand 6 states. [2019-12-07 18:50:36,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:50:36,082 INFO L93 Difference]: Finished difference Result 61 states and 78 transitions. [2019-12-07 18:50:36,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 18:50:36,083 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2019-12-07 18:50:36,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:50:36,083 INFO L225 Difference]: With dead ends: 61 [2019-12-07 18:50:36,083 INFO L226 Difference]: Without dead ends: 40 [2019-12-07 18:50:36,084 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2019-12-07 18:50:36,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-12-07 18:50:36,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2019-12-07 18:50:36,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-07 18:50:36,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2019-12-07 18:50:36,088 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 27 [2019-12-07 18:50:36,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:50:36,089 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2019-12-07 18:50:36,089 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 18:50:36,089 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2019-12-07 18:50:36,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-12-07 18:50:36,089 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:50:36,090 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:50:36,290 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:50:36,291 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:50:36,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:50:36,291 INFO L82 PathProgramCache]: Analyzing trace with hash -116107245, now seen corresponding path program 2 times [2019-12-07 18:50:36,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:50:36,292 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604827346] [2019-12-07 18:50:36,292 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:50:36,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:50:36,388 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 29 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 18:50:36,389 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604827346] [2019-12-07 18:50:36,389 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506711481] [2019-12-07 18:50:36,389 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db074246-a0b3-4b37-a050-a31b25c468f7/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:50:36,408 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-12-07 18:50:36,408 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:50:36,409 INFO L264 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 18:50:36,410 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:50:36,428 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 18:50:36,438 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-12-07 18:50:36,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:50:36,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 13 [2019-12-07 18:50:36,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449292598] [2019-12-07 18:50:36,439 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-12-07 18:50:36,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:50:36,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-12-07 18:50:36,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2019-12-07 18:50:36,439 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 13 states. [2019-12-07 18:50:36,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:50:36,714 INFO L93 Difference]: Finished difference Result 77 states and 96 transitions. [2019-12-07 18:50:36,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-12-07 18:50:36,715 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2019-12-07 18:50:36,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:50:36,715 INFO L225 Difference]: With dead ends: 77 [2019-12-07 18:50:36,715 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 18:50:36,716 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=255, Invalid=557, Unknown=0, NotChecked=0, Total=812 [2019-12-07 18:50:36,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 18:50:36,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 18:50:36,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 18:50:36,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 18:50:36,717 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2019-12-07 18:50:36,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:50:36,717 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:50:36,717 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-12-07 18:50:36,717 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 18:50:36,717 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 18:50:36,917 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:50:36,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 18:50:37,412 WARN L192 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 42 [2019-12-07 18:50:37,414 INFO L246 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2019-12-07 18:50:37,414 INFO L246 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2019-12-07 18:50:37,414 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-12-07 18:50:37,414 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 18:50:37,415 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-12-07 18:50:37,415 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-12-07 18:50:37,415 INFO L249 CegarLoopResult]: At program point L24(lines 11 26) the Hoare annotation is: true [2019-12-07 18:50:37,415 INFO L246 CegarLoopResult]: For program point L20-2(lines 20 23) no Hoare annotation was computed. [2019-12-07 18:50:37,415 INFO L242 CegarLoopResult]: At program point L20-3(lines 20 23) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~n~0))) (or (and (<= 2 ULTIMATE.start_main_~i~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0) (and (<= ULTIMATE.start_main_~i~0 0) (<= 0 ULTIMATE.start_main_~i~0)) (and (<= 1 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 1) .cse0))) [2019-12-07 18:50:37,415 INFO L246 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2019-12-07 18:50:37,415 INFO L246 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-12-07 18:50:37,416 INFO L242 CegarLoopResult]: At program point L4-2(lines 1 26) the Hoare annotation is: (let ((.cse6 (* 3 ULTIMATE.start_main_~i~0))) (let ((.cse5 (* 2 ULTIMATE.start_main_~n~0)) (.cse4 (<= 2 ULTIMATE.start_main_~i~0)) (.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (< ULTIMATE.start_main_~j~0 .cse6)) (.cse2 (<= (* 2 ULTIMATE.start_main_~i~0) ULTIMATE.start_main_~j~0)) (.cse3 (< ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~n~0))) (or (and (<= ULTIMATE.start_main_~k~0 (div ULTIMATE.start_main_~j~0 2)) .cse0 .cse1 (<= (div (- ULTIMATE.start_main_~j~0) (- 2)) ULTIMATE.start_main_~k~0) .cse2 .cse3) (and .cse4 .cse0 .cse1 (<= (+ (* 2 ULTIMATE.start_main_~j~0) 2) (+ .cse5 ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~k~0)) .cse2 .cse3) (and (<= (+ .cse6 5) (+ .cse5 ULTIMATE.start_main_~j~0)) .cse4 .cse0 .cse1 .cse2 .cse3)))) [2019-12-07 18:50:37,416 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 18:50:37,416 INFO L249 CegarLoopResult]: At program point L25(lines 11 26) the Hoare annotation is: true [2019-12-07 18:50:37,416 INFO L246 CegarLoopResult]: For program point L21-2(lines 21 23) no Hoare annotation was computed. [2019-12-07 18:50:37,416 INFO L242 CegarLoopResult]: At program point L21-3(lines 21 23) the Hoare annotation is: (let ((.cse0 (<= (* 2 ULTIMATE.start_main_~i~0) ULTIMATE.start_main_~j~0)) (.cse1 (< ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~n~0))) (or (and (<= ULTIMATE.start_main_~i~0 1) (< ULTIMATE.start_main_~j~0 (* 3 ULTIMATE.start_main_~i~0)) .cse0 .cse1) (and (<= 1 ULTIMATE.start_main_~i~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0 .cse1) (and (<= ULTIMATE.start_main_~i~0 0) .cse1 (<= 0 ULTIMATE.start_main_~i~0)))) [2019-12-07 18:50:37,416 INFO L246 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2019-12-07 18:50:37,416 INFO L246 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2019-12-07 18:50:37,416 INFO L242 CegarLoopResult]: At program point L22-2(lines 22 23) the Hoare annotation is: (let ((.cse8 (* 3 ULTIMATE.start_main_~i~0)) (.cse9 (div (- ULTIMATE.start_main_~j~0) (- 2)))) (let ((.cse6 (* 2 ULTIMATE.start_main_~n~0)) (.cse3 (<= 2 ULTIMATE.start_main_~i~0)) (.cse5 (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~i~0)) (.cse1 (<= .cse9 ULTIMATE.start_main_~k~0)) (.cse4 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse0 (< ULTIMATE.start_main_~j~0 .cse8)) (.cse7 (<= (* 2 ULTIMATE.start_main_~i~0) ULTIMATE.start_main_~j~0)) (.cse2 (< ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~n~0))) (or (and (<= ULTIMATE.start_main_~i~0 0) .cse0 .cse1 .cse2 (<= 0 ULTIMATE.start_main_~i~0)) (and .cse3 .cse4 .cse5 .cse0 (<= (+ (* 2 ULTIMATE.start_main_~j~0) 2) (+ .cse6 ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~k~0)) .cse7) (and (<= (+ .cse8 5) (+ .cse6 ULTIMATE.start_main_~j~0)) .cse3 .cse4 .cse0 .cse7 .cse2) (and .cse5 (<= ULTIMATE.start_main_~i~0 1) .cse0 .cse1 .cse7 .cse2) (and (<= (+ .cse9 1) ULTIMATE.start_main_~k~0) .cse4 .cse0 .cse7 .cse2)))) [2019-12-07 18:50:37,416 INFO L246 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2019-12-07 18:50:37,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 06:50:37 BoogieIcfgContainer [2019-12-07 18:50:37,432 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 18:50:37,432 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 18:50:37,433 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 18:50:37,433 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 18:50:37,433 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:50:34" (3/4) ... [2019-12-07 18:50:37,435 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 18:50:37,442 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-12-07 18:50:37,442 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 18:50:37,475 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_db074246-a0b3-4b37-a050-a31b25c468f7/bin/uautomizer/witness.graphml [2019-12-07 18:50:37,475 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 18:50:37,477 INFO L168 Benchmark]: Toolchain (without parser) took 3565.28 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.5 MB). Free memory was 942.0 MB in the beginning and 873.0 MB in the end (delta: 69.1 MB). Peak memory consumption was 166.6 MB. Max. memory is 11.5 GB. [2019-12-07 18:50:37,477 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 959.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:50:37,477 INFO L168 Benchmark]: CACSL2BoogieTranslator took 185.33 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.5 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -158.3 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-12-07 18:50:37,478 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.37 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 11.5 GB. [2019-12-07 18:50:37,478 INFO L168 Benchmark]: Boogie Preprocessor took 13.46 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 11.5 GB. [2019-12-07 18:50:37,478 INFO L168 Benchmark]: RCFGBuilder took 157.90 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2019-12-07 18:50:37,478 INFO L168 Benchmark]: TraceAbstraction took 3139.89 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 877.7 MB in the end (delta: 192.1 MB). Peak memory consumption was 192.1 MB. Max. memory is 11.5 GB. [2019-12-07 18:50:37,479 INFO L168 Benchmark]: Witness Printer took 43.06 ms. Allocated memory is still 1.1 GB. Free memory was 877.7 MB in the beginning and 873.0 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 11.5 GB. [2019-12-07 18:50:37,480 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 959.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 185.33 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.5 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -158.3 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 22.37 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.46 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 157.90 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3139.89 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 877.7 MB in the end (delta: 192.1 MB). Peak memory consumption was 192.1 MB. Max. memory is 11.5 GB. * Witness Printer took 43.06 ms. Allocated memory is still 1.1 GB. Free memory was 877.7 MB in the beginning and 873.0 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 11.5 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (((2 <= i && 1 == cond) && i <= n) || (i <= 0 && 0 <= i)) || ((1 <= i && i <= 1) && i <= n) - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: ((((((k <= j / 2 && 1 == cond) && j < 3 * i) && -j / -2 <= k) && 2 * i <= j) && i < n) || (((((2 <= i && 1 == cond) && j < 3 * i) && 2 * j + 2 <= 2 * n + i + k) && 2 * i <= j) && i < n)) || (((((3 * i + 5 <= 2 * n + j && 2 <= i) && 1 == cond) && j < 3 * i) && 2 * i <= j) && i < n) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ((((i <= 1 && j < 3 * i) && 2 * i <= j) && i < n) || (((1 <= i && 1 == cond) && 2 * i <= j) && i < n)) || ((i <= 0 && i < n) && 0 <= i) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (((((((i <= 0 && j < 3 * i) && -j / -2 <= k) && i < n) && 0 <= i) || (((((2 <= i && 1 == cond) && k <= i) && j < 3 * i) && 2 * j + 2 <= 2 * n + i + k) && 2 * i <= j)) || (((((3 * i + 5 <= 2 * n + j && 2 <= i) && 1 == cond) && j < 3 * i) && 2 * i <= j) && i < n)) || (((((k <= i && i <= 1) && j < 3 * i) && -j / -2 <= k) && 2 * i <= j) && i < n)) || ((((-j / -2 + 1 <= k && 1 == cond) && j < 3 * i) && 2 * i <= j) && i < n) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Result: SAFE, OverallTime: 2.5s, OverallIterations: 5, TraceHistogramMax: 4, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, HoareTripleCheckerStatistics: 70 SDtfs, 231 SDslu, 222 SDs, 0 SdLazy, 553 SolverSat, 106 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 177 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 55 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 40 NumberOfFragments, 301 HoareAnnotationTreeSize, 6 FomulaSimplifications, 2529 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 589 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 198 NumberOfCodeBlocks, 177 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 189 ConstructedInterpolants, 0 QuantifiedInterpolants, 17178 SizeOfPredicates, 17 NumberOfNonLiveVariables, 208 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 76/134 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...