./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/EvenOdd03.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a726489f-2126-44f4-bdd1-7c4b24418924/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a726489f-2126-44f4-bdd1-7c4b24418924/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a726489f-2126-44f4-bdd1-7c4b24418924/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a726489f-2126-44f4-bdd1-7c4b24418924/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/EvenOdd03.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a726489f-2126-44f4-bdd1-7c4b24418924/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a726489f-2126-44f4-bdd1-7c4b24418924/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f3d619d2c1c3b5319c1ba41a41e084c9947cb440 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 23:24:31,279 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:24:31,281 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:24:31,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:24:31,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:24:31,295 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:24:31,297 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:24:31,300 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:24:31,302 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:24:31,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:24:31,304 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:24:31,306 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:24:31,306 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:24:31,307 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:24:31,308 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:24:31,310 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:24:31,311 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:24:31,312 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:24:31,314 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:24:31,316 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:24:31,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:24:31,319 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:24:31,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:24:31,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:24:31,325 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:24:31,325 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:24:31,326 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:24:31,326 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:24:31,327 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:24:31,328 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:24:31,328 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:24:31,329 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:24:31,330 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:24:31,331 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:24:31,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:24:31,332 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:24:31,333 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:24:31,333 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:24:31,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:24:31,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:24:31,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:24:31,336 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a726489f-2126-44f4-bdd1-7c4b24418924/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf [2019-11-15 23:24:31,352 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:24:31,352 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:24:31,354 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:24:31,354 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:24:31,354 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:24:31,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:24:31,355 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:24:31,355 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 23:24:31,356 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 23:24:31,356 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:24:31,356 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:24:31,357 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 23:24:31,357 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:24:31,357 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 23:24:31,357 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-15 23:24:31,358 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:24:31,358 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:24:31,358 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:24:31,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 23:24:31,359 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:24:31,359 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:24:31,360 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:24:31,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:24:31,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:24:31,361 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:24:31,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:24:31,361 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 23:24:31,362 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 23:24:31,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 23:24:31,362 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 23:24:31,362 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_a726489f-2126-44f4-bdd1-7c4b24418924/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 ! overflow) ) 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 -> f3d619d2c1c3b5319c1ba41a41e084c9947cb440 [2019-11-15 23:24:31,394 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:24:31,410 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:24:31,414 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:24:31,417 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:24:31,418 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:24:31,419 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a726489f-2126-44f4-bdd1-7c4b24418924/bin/uautomizer/../../sv-benchmarks/c/recursive/EvenOdd03.c [2019-11-15 23:24:31,493 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a726489f-2126-44f4-bdd1-7c4b24418924/bin/uautomizer/data/821b1db73/bba299a71b354006917932e3ccecf21f/FLAG5f8a6e49d [2019-11-15 23:24:31,970 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:24:31,971 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a726489f-2126-44f4-bdd1-7c4b24418924/sv-benchmarks/c/recursive/EvenOdd03.c [2019-11-15 23:24:31,978 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a726489f-2126-44f4-bdd1-7c4b24418924/bin/uautomizer/data/821b1db73/bba299a71b354006917932e3ccecf21f/FLAG5f8a6e49d [2019-11-15 23:24:32,305 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a726489f-2126-44f4-bdd1-7c4b24418924/bin/uautomizer/data/821b1db73/bba299a71b354006917932e3ccecf21f [2019-11-15 23:24:32,308 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:24:32,309 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:24:32,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:24:32,310 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:24:32,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:24:32,316 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:24:32" (1/1) ... [2019-11-15 23:24:32,319 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f8ce32a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:24:32, skipping insertion in model container [2019-11-15 23:24:32,319 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:24:32" (1/1) ... [2019-11-15 23:24:32,328 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:24:32,352 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:24:32,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:24:32,600 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:24:32,699 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:24:32,715 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:24:32,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:24:32 WrapperNode [2019-11-15 23:24:32,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:24:32,717 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:24:32,717 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:24:32,718 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:24:32,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:24:32" (1/1) ... [2019-11-15 23:24:32,734 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:24:32" (1/1) ... [2019-11-15 23:24:32,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:24:32,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:24:32,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:24:32,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:24:32,765 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:24:32" (1/1) ... [2019-11-15 23:24:32,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:24:32" (1/1) ... [2019-11-15 23:24:32,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:24:32" (1/1) ... [2019-11-15 23:24:32,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:24:32" (1/1) ... [2019-11-15 23:24:32,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:24:32" (1/1) ... [2019-11-15 23:24:32,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:24:32" (1/1) ... [2019-11-15 23:24:32,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:24:32" (1/1) ... [2019-11-15 23:24:32,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:24:32,776 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:24:32,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:24:32,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:24:32,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:24:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a726489f-2126-44f4-bdd1-7c4b24418924/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 [2019-11-15 23:24:32,845 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2019-11-15 23:24:32,845 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2019-11-15 23:24:32,846 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2019-11-15 23:24:32,846 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2019-11-15 23:24:32,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:24:32,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:24:33,098 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:24:33,099 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-15 23:24:33,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:24:33 BoogieIcfgContainer [2019-11-15 23:24:33,100 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:24:33,101 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:24:33,101 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:24:33,104 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:24:33,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:24:32" (1/3) ... [2019-11-15 23:24:33,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@157da43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:24:33, skipping insertion in model container [2019-11-15 23:24:33,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:24:32" (2/3) ... [2019-11-15 23:24:33,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@157da43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:24:33, skipping insertion in model container [2019-11-15 23:24:33,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:24:33" (3/3) ... [2019-11-15 23:24:33,109 INFO L109 eAbstractionObserver]: Analyzing ICFG EvenOdd03.c [2019-11-15 23:24:33,119 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:24:33,127 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-15 23:24:33,140 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-15 23:24:33,166 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:24:33,166 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 23:24:33,166 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:24:33,167 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:24:33,167 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:24:33,167 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:24:33,167 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:24:33,168 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:24:33,187 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2019-11-15 23:24:33,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-15 23:24:33,193 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:24:33,194 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:24:33,196 INFO L410 AbstractCegarLoop]: === Iteration 1 === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 23:24:33,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:24:33,203 INFO L82 PathProgramCache]: Analyzing trace with hash 2104366230, now seen corresponding path program 1 times [2019-11-15 23:24:33,212 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:24:33,212 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496356469] [2019-11-15 23:24:33,213 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:24:33,213 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:24:33,213 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:24:33,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:24:33,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:24:33,415 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496356469] [2019-11-15 23:24:33,416 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:24:33,416 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 23:24:33,417 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978619314] [2019-11-15 23:24:33,425 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 23:24:33,426 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:24:33,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 23:24:33,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-15 23:24:33,439 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2019-11-15 23:24:33,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:24:33,598 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2019-11-15 23:24:33,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 23:24:33,600 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-15 23:24:33,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:24:33,608 INFO L225 Difference]: With dead ends: 47 [2019-11-15 23:24:33,609 INFO L226 Difference]: Without dead ends: 26 [2019-11-15 23:24:33,612 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-15 23:24:33,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-15 23:24:33,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2019-11-15 23:24:33,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-15 23:24:33,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2019-11-15 23:24:33,648 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 7 [2019-11-15 23:24:33,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:24:33,649 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2019-11-15 23:24:33,649 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 23:24:33,649 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2019-11-15 23:24:33,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-15 23:24:33,650 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:24:33,650 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:24:33,650 INFO L410 AbstractCegarLoop]: === Iteration 2 === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 23:24:33,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:24:33,651 INFO L82 PathProgramCache]: Analyzing trace with hash 810843732, now seen corresponding path program 1 times [2019-11-15 23:24:33,651 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:24:33,651 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768809658] [2019-11-15 23:24:33,651 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:24:33,651 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:24:33,651 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:24:33,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:24:33,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:24:33,704 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768809658] [2019-11-15 23:24:33,704 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:24:33,704 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 23:24:33,705 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604825761] [2019-11-15 23:24:33,706 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 23:24:33,707 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:24:33,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 23:24:33,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-15 23:24:33,708 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 5 states. [2019-11-15 23:24:33,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:24:33,766 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2019-11-15 23:24:33,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 23:24:33,766 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-15 23:24:33,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:24:33,767 INFO L225 Difference]: With dead ends: 26 [2019-11-15 23:24:33,768 INFO L226 Difference]: Without dead ends: 25 [2019-11-15 23:24:33,769 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-15 23:24:33,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-15 23:24:33,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2019-11-15 23:24:33,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-15 23:24:33,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2019-11-15 23:24:33,775 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 8 [2019-11-15 23:24:33,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:24:33,775 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2019-11-15 23:24:33,775 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 23:24:33,775 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2019-11-15 23:24:33,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-15 23:24:33,776 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:24:33,777 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:24:33,777 INFO L410 AbstractCegarLoop]: === Iteration 3 === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 23:24:33,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:24:33,778 INFO L82 PathProgramCache]: Analyzing trace with hash 2058121603, now seen corresponding path program 1 times [2019-11-15 23:24:33,778 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:24:33,778 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093234976] [2019-11-15 23:24:33,778 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:24:33,778 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:24:33,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:24:33,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:24:33,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:24:33,862 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093234976] [2019-11-15 23:24:33,862 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:24:33,862 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 23:24:33,862 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476810838] [2019-11-15 23:24:33,863 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 23:24:33,863 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:24:33,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 23:24:33,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-15 23:24:33,864 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 7 states. [2019-11-15 23:24:33,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:24:33,978 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2019-11-15 23:24:33,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 23:24:33,979 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2019-11-15 23:24:33,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:24:33,980 INFO L225 Difference]: With dead ends: 24 [2019-11-15 23:24:33,980 INFO L226 Difference]: Without dead ends: 22 [2019-11-15 23:24:33,981 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-11-15 23:24:33,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-15 23:24:33,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-11-15 23:24:33,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-15 23:24:33,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2019-11-15 23:24:33,991 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 13 [2019-11-15 23:24:33,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:24:33,992 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2019-11-15 23:24:33,992 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 23:24:33,992 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2019-11-15 23:24:33,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-15 23:24:33,994 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:24:33,994 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:24:33,995 INFO L410 AbstractCegarLoop]: === Iteration 4 === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 23:24:33,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:24:33,996 INFO L82 PathProgramCache]: Analyzing trace with hash -622739689, now seen corresponding path program 1 times [2019-11-15 23:24:33,996 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:24:33,996 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830544231] [2019-11-15 23:24:33,997 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:24:33,997 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:24:33,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:24:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:24:34,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:24:34,093 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830544231] [2019-11-15 23:24:34,093 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:24:34,093 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-15 23:24:34,093 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867895695] [2019-11-15 23:24:34,094 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 23:24:34,094 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:24:34,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 23:24:34,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-15 23:24:34,095 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 7 states. [2019-11-15 23:24:34,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:24:34,215 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2019-11-15 23:24:34,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 23:24:34,216 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2019-11-15 23:24:34,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:24:34,217 INFO L225 Difference]: With dead ends: 30 [2019-11-15 23:24:34,217 INFO L226 Difference]: Without dead ends: 29 [2019-11-15 23:24:34,218 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-11-15 23:24:34,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-15 23:24:34,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2019-11-15 23:24:34,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-15 23:24:34,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2019-11-15 23:24:34,225 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 14 [2019-11-15 23:24:34,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:24:34,225 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2019-11-15 23:24:34,225 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 23:24:34,225 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2019-11-15 23:24:34,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-15 23:24:34,226 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:24:34,226 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:24:34,227 INFO L410 AbstractCegarLoop]: === Iteration 5 === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 23:24:34,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:24:34,227 INFO L82 PathProgramCache]: Analyzing trace with hash -2074159416, now seen corresponding path program 1 times [2019-11-15 23:24:34,227 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:24:34,228 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225643573] [2019-11-15 23:24:34,228 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:24:34,228 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:24:34,228 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:24:34,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:24:34,342 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:24:34,342 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225643573] [2019-11-15 23:24:34,342 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875482481] [2019-11-15 23:24:34,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a726489f-2126-44f4-bdd1-7c4b24418924/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 [2019-11-15 23:24:34,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:24:34,398 INFO L256 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-15 23:24:34,407 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:24:34,438 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:24:34,438 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:24:34,439 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2019-11-15 23:24:34,439 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141859391] [2019-11-15 23:24:34,440 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-15 23:24:34,440 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:24:34,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-15 23:24:34,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-15 23:24:34,441 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 9 states. [2019-11-15 23:24:34,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:24:34,572 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2019-11-15 23:24:34,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-15 23:24:34,572 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2019-11-15 23:24:34,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:24:34,574 INFO L225 Difference]: With dead ends: 36 [2019-11-15 23:24:34,574 INFO L226 Difference]: Without dead ends: 35 [2019-11-15 23:24:34,574 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2019-11-15 23:24:34,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-15 23:24:34,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2019-11-15 23:24:34,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-15 23:24:34,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2019-11-15 23:24:34,582 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 20 [2019-11-15 23:24:34,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:24:34,583 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2019-11-15 23:24:34,583 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-15 23:24:34,583 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2019-11-15 23:24:34,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-15 23:24:34,584 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:24:34,584 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-15 23:24:34,791 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:24:34,791 INFO L410 AbstractCegarLoop]: === Iteration 6 === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 23:24:34,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:24:34,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1675825013, now seen corresponding path program 1 times [2019-11-15 23:24:34,793 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:24:34,793 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156325173] [2019-11-15 23:24:34,794 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:24:34,794 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:24:34,794 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:24:34,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:24:34,981 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:24:34,981 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156325173] [2019-11-15 23:24:34,981 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088173132] [2019-11-15 23:24:34,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a726489f-2126-44f4-bdd1-7c4b24418924/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 [2019-11-15 23:24:35,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:24:35,027 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-15 23:24:35,029 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:24:35,040 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:24:35,041 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:24:35,041 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2019-11-15 23:24:35,041 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510408695] [2019-11-15 23:24:35,042 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-15 23:24:35,042 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:24:35,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-15 23:24:35,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-11-15 23:24:35,043 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 11 states. [2019-11-15 23:24:35,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:24:35,261 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2019-11-15 23:24:35,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-15 23:24:35,262 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2019-11-15 23:24:35,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:24:35,263 INFO L225 Difference]: With dead ends: 42 [2019-11-15 23:24:35,264 INFO L226 Difference]: Without dead ends: 41 [2019-11-15 23:24:35,264 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2019-11-15 23:24:35,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-11-15 23:24:35,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2019-11-15 23:24:35,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-15 23:24:35,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2019-11-15 23:24:35,282 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 26 [2019-11-15 23:24:35,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:24:35,283 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2019-11-15 23:24:35,283 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-15 23:24:35,283 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2019-11-15 23:24:35,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-15 23:24:35,284 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:24:35,284 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2019-11-15 23:24:35,490 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:24:35,491 INFO L410 AbstractCegarLoop]: === Iteration 7 === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 23:24:35,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:24:35,491 INFO L82 PathProgramCache]: Analyzing trace with hash 923017532, now seen corresponding path program 2 times [2019-11-15 23:24:35,492 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:24:35,492 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265632174] [2019-11-15 23:24:35,492 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:24:35,492 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:24:35,492 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:24:35,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:24:35,677 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:24:35,678 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265632174] [2019-11-15 23:24:35,678 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981062679] [2019-11-15 23:24:35,678 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a726489f-2126-44f4-bdd1-7c4b24418924/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 [2019-11-15 23:24:35,732 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 23:24:35,732 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:24:35,733 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-15 23:24:35,736 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:24:35,753 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:24:35,754 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:24:35,754 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2019-11-15 23:24:35,755 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423916124] [2019-11-15 23:24:35,755 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-15 23:24:35,756 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:24:35,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-15 23:24:35,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2019-11-15 23:24:35,757 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 13 states. [2019-11-15 23:24:35,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:24:35,971 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2019-11-15 23:24:35,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-15 23:24:35,972 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2019-11-15 23:24:35,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:24:35,973 INFO L225 Difference]: With dead ends: 48 [2019-11-15 23:24:35,973 INFO L226 Difference]: Without dead ends: 47 [2019-11-15 23:24:35,974 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2019-11-15 23:24:35,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-15 23:24:35,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2019-11-15 23:24:35,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-11-15 23:24:35,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2019-11-15 23:24:35,982 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 32 [2019-11-15 23:24:35,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:24:35,982 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2019-11-15 23:24:35,982 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-15 23:24:35,983 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2019-11-15 23:24:35,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-15 23:24:35,984 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:24:35,984 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2019-11-15 23:24:36,184 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:24:36,185 INFO L410 AbstractCegarLoop]: === Iteration 8 === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 23:24:36,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:24:36,186 INFO L82 PathProgramCache]: Analyzing trace with hash -2072669185, now seen corresponding path program 2 times [2019-11-15 23:24:36,186 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:24:36,186 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557821863] [2019-11-15 23:24:36,186 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:24:36,187 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:24:36,187 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:24:36,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:24:36,430 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:24:36,431 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557821863] [2019-11-15 23:24:36,431 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006642432] [2019-11-15 23:24:36,431 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a726489f-2126-44f4-bdd1-7c4b24418924/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 [2019-11-15 23:24:36,481 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 23:24:36,481 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:24:36,482 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-15 23:24:36,484 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:24:36,497 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:24:36,498 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:24:36,498 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2019-11-15 23:24:36,498 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939235309] [2019-11-15 23:24:36,499 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-15 23:24:36,499 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:24:36,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-15 23:24:36,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2019-11-15 23:24:36,500 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 15 states. [2019-11-15 23:24:36,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:24:36,760 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2019-11-15 23:24:36,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-15 23:24:36,763 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 38 [2019-11-15 23:24:36,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:24:36,765 INFO L225 Difference]: With dead ends: 54 [2019-11-15 23:24:36,765 INFO L226 Difference]: Without dead ends: 53 [2019-11-15 23:24:36,765 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2019-11-15 23:24:36,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-11-15 23:24:36,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2019-11-15 23:24:36,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-11-15 23:24:36,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2019-11-15 23:24:36,779 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 38 [2019-11-15 23:24:36,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:24:36,781 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2019-11-15 23:24:36,781 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-15 23:24:36,781 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2019-11-15 23:24:36,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-11-15 23:24:36,785 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:24:36,785 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2019-11-15 23:24:36,989 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:24:36,989 INFO L410 AbstractCegarLoop]: === Iteration 9 === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 23:24:36,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:24:36,990 INFO L82 PathProgramCache]: Analyzing trace with hash 225009072, now seen corresponding path program 3 times [2019-11-15 23:24:36,990 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:24:36,990 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177417554] [2019-11-15 23:24:36,990 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:24:36,991 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:24:36,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:24:37,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:24:37,245 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:24:37,245 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177417554] [2019-11-15 23:24:37,246 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975337614] [2019-11-15 23:24:37,246 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a726489f-2126-44f4-bdd1-7c4b24418924/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:24:37,306 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-15 23:24:37,306 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:24:37,307 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-15 23:24:37,310 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:24:37,339 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:24:37,340 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:24:37,340 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2019-11-15 23:24:37,340 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357791535] [2019-11-15 23:24:37,341 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-15 23:24:37,341 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:24:37,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-15 23:24:37,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2019-11-15 23:24:37,342 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 17 states. [2019-11-15 23:24:37,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:24:37,643 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2019-11-15 23:24:37,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-15 23:24:37,643 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 44 [2019-11-15 23:24:37,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:24:37,645 INFO L225 Difference]: With dead ends: 60 [2019-11-15 23:24:37,645 INFO L226 Difference]: Without dead ends: 59 [2019-11-15 23:24:37,645 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2019-11-15 23:24:37,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-15 23:24:37,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2019-11-15 23:24:37,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-11-15 23:24:37,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2019-11-15 23:24:37,654 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 44 [2019-11-15 23:24:37,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:24:37,654 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2019-11-15 23:24:37,654 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-15 23:24:37,654 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2019-11-15 23:24:37,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-15 23:24:37,656 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:24:37,656 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1] [2019-11-15 23:24:37,859 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:24:37,859 INFO L410 AbstractCegarLoop]: === Iteration 10 === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 23:24:37,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:24:37,860 INFO L82 PathProgramCache]: Analyzing trace with hash 693152115, now seen corresponding path program 3 times [2019-11-15 23:24:37,860 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:24:37,860 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233256047] [2019-11-15 23:24:37,860 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:24:37,860 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:24:37,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:24:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:24:38,102 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:24:38,102 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233256047] [2019-11-15 23:24:38,102 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361349604] [2019-11-15 23:24:38,103 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a726489f-2126-44f4-bdd1-7c4b24418924/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:24:38,159 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-15 23:24:38,159 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:24:38,161 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-15 23:24:38,164 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:24:38,188 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:24:38,189 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:24:38,189 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2019-11-15 23:24:38,189 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865494636] [2019-11-15 23:24:38,194 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-15 23:24:38,194 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:24:38,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-15 23:24:38,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2019-11-15 23:24:38,195 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 19 states. [2019-11-15 23:24:38,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:24:38,459 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2019-11-15 23:24:38,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-15 23:24:38,460 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 50 [2019-11-15 23:24:38,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:24:38,461 INFO L225 Difference]: With dead ends: 66 [2019-11-15 23:24:38,461 INFO L226 Difference]: Without dead ends: 65 [2019-11-15 23:24:38,462 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=575, Unknown=0, NotChecked=0, Total=702 [2019-11-15 23:24:38,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2019-11-15 23:24:38,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2019-11-15 23:24:38,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2019-11-15 23:24:38,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2019-11-15 23:24:38,470 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 50 [2019-11-15 23:24:38,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:24:38,471 INFO L462 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2019-11-15 23:24:38,471 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-15 23:24:38,471 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2019-11-15 23:24:38,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-15 23:24:38,473 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:24:38,473 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2019-11-15 23:24:38,677 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:24:38,678 INFO L410 AbstractCegarLoop]: === Iteration 11 === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 23:24:38,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:24:38,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1026788388, now seen corresponding path program 4 times [2019-11-15 23:24:38,679 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:24:38,679 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762479480] [2019-11-15 23:24:38,679 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:24:38,679 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:24:38,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:24:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:24:38,980 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:24:38,980 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762479480] [2019-11-15 23:24:38,980 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420998125] [2019-11-15 23:24:38,980 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a726489f-2126-44f4-bdd1-7c4b24418924/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:24:39,027 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-15 23:24:39,027 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:24:39,029 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 28 conjunts are in the unsatisfiable core [2019-11-15 23:24:39,032 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:24:39,179 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-11-15 23:24:39,183 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:24:39,184 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 8] total 24 [2019-11-15 23:24:39,184 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472127672] [2019-11-15 23:24:39,185 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-11-15 23:24:39,186 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:24:39,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-11-15 23:24:39,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2019-11-15 23:24:39,187 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 25 states. [2019-11-15 23:24:39,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:24:39,370 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2019-11-15 23:24:39,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-15 23:24:39,371 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 56 [2019-11-15 23:24:39,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:24:39,372 INFO L225 Difference]: With dead ends: 64 [2019-11-15 23:24:39,372 INFO L226 Difference]: Without dead ends: 0 [2019-11-15 23:24:39,373 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=152, Invalid=660, Unknown=0, NotChecked=0, Total=812 [2019-11-15 23:24:39,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-15 23:24:39,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-15 23:24:39,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-15 23:24:39,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 23:24:39,374 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 56 [2019-11-15 23:24:39,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:24:39,374 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:24:39,374 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-11-15 23:24:39,374 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-15 23:24:39,375 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-15 23:24:39,575 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:24:39,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-15 23:24:39,858 INFO L443 ceAbstractionStarter]: For program point L32(line 32) no Hoare annotation was computed. [2019-11-15 23:24:39,858 INFO L443 ceAbstractionStarter]: For program point isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 32) no Hoare annotation was computed. [2019-11-15 23:24:39,858 INFO L443 ceAbstractionStarter]: For program point isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 32) no Hoare annotation was computed. [2019-11-15 23:24:39,858 INFO L443 ceAbstractionStarter]: For program point L32-1(line 32) no Hoare annotation was computed. [2019-11-15 23:24:39,859 INFO L439 ceAbstractionStarter]: At program point L32-2(line 32) the Hoare annotation is: (or (not (<= |isEven_#in~n| 2147483647)) (not (<= 0 |isEven_#in~n|)) (and (not (= isEven_~n 0)) (<= 0 isEven_~n) (<= isEven_~n 2147483647) (not (= isEven_~n 1)))) [2019-11-15 23:24:39,859 INFO L443 ceAbstractionStarter]: For program point L29(lines 29 33) no Hoare annotation was computed. [2019-11-15 23:24:39,859 INFO L443 ceAbstractionStarter]: For program point L32-3(line 32) no Hoare annotation was computed. [2019-11-15 23:24:39,859 INFO L443 ceAbstractionStarter]: For program point L27(lines 27 33) no Hoare annotation was computed. [2019-11-15 23:24:39,859 INFO L446 ceAbstractionStarter]: At program point isEvenENTRY(lines 26 34) the Hoare annotation is: true [2019-11-15 23:24:39,860 INFO L443 ceAbstractionStarter]: For program point isEvenEXIT(lines 26 34) no Hoare annotation was computed. [2019-11-15 23:24:39,860 INFO L443 ceAbstractionStarter]: For program point isEvenFINAL(lines 26 34) no Hoare annotation was computed. [2019-11-15 23:24:39,860 INFO L443 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2019-11-15 23:24:39,860 INFO L443 ceAbstractionStarter]: For program point L22-1(line 22) no Hoare annotation was computed. [2019-11-15 23:24:39,860 INFO L439 ceAbstractionStarter]: At program point L22-2(line 22) the Hoare annotation is: (or (not (<= |isOdd_#in~n| 2147483646)) (not (<= 1 |isOdd_#in~n|)) (and (<= isOdd_~n 2147483646) (<= 1 isOdd_~n))) [2019-11-15 23:24:39,860 INFO L443 ceAbstractionStarter]: For program point L19(lines 19 23) no Hoare annotation was computed. [2019-11-15 23:24:39,861 INFO L443 ceAbstractionStarter]: For program point L22-3(line 22) no Hoare annotation was computed. [2019-11-15 23:24:39,861 INFO L443 ceAbstractionStarter]: For program point L17(lines 17 23) no Hoare annotation was computed. [2019-11-15 23:24:39,861 INFO L443 ceAbstractionStarter]: For program point isOddFINAL(lines 16 24) no Hoare annotation was computed. [2019-11-15 23:24:39,861 INFO L443 ceAbstractionStarter]: For program point isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2019-11-15 23:24:39,861 INFO L446 ceAbstractionStarter]: At program point isOddENTRY(lines 16 24) the Hoare annotation is: true [2019-11-15 23:24:39,861 INFO L443 ceAbstractionStarter]: For program point isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2019-11-15 23:24:39,861 INFO L443 ceAbstractionStarter]: For program point isOddEXIT(lines 16 24) no Hoare annotation was computed. [2019-11-15 23:24:39,861 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-15 23:24:39,862 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-15 23:24:39,862 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-15 23:24:39,862 INFO L443 ceAbstractionStarter]: For program point L47(line 47) no Hoare annotation was computed. [2019-11-15 23:24:39,862 INFO L443 ceAbstractionStarter]: For program point L44(lines 44 48) no Hoare annotation was computed. [2019-11-15 23:24:39,862 INFO L439 ceAbstractionStarter]: At program point L42(line 42) the Hoare annotation is: (and (<= ULTIMATE.start_main_~n~0 2147483647) (<= 0 ULTIMATE.start_main_~n~0)) [2019-11-15 23:24:39,862 INFO L443 ceAbstractionStarter]: For program point L42-1(line 42) no Hoare annotation was computed. [2019-11-15 23:24:39,862 INFO L443 ceAbstractionStarter]: For program point L39(lines 39 41) no Hoare annotation was computed. [2019-11-15 23:24:39,862 INFO L439 ceAbstractionStarter]: At program point L37(lines 37 49) the Hoare annotation is: (<= ULTIMATE.start_main_~n~0 2147483647) [2019-11-15 23:24:39,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 11:24:39 BoogieIcfgContainer [2019-11-15 23:24:39,875 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 23:24:39,875 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:24:39,875 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:24:39,876 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:24:39,876 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:24:33" (3/4) ... [2019-11-15 23:24:39,879 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-15 23:24:39,886 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isEven [2019-11-15 23:24:39,886 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isOdd [2019-11-15 23:24:39,892 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-15 23:24:39,892 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-15 23:24:39,946 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a726489f-2126-44f4-bdd1-7c4b24418924/bin/uautomizer/witness.graphml [2019-11-15 23:24:39,946 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:24:39,948 INFO L168 Benchmark]: Toolchain (without parser) took 7638.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 209.2 MB). Free memory was 950.1 MB in the beginning and 925.4 MB in the end (delta: 24.7 MB). Peak memory consumption was 233.9 MB. Max. memory is 11.5 GB. [2019-11-15 23:24:39,949 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:24:39,950 INFO L168 Benchmark]: CACSL2BoogieTranslator took 406.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -190.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-15 23:24:39,950 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.42 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:24:39,951 INFO L168 Benchmark]: Boogie Preprocessor took 22.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2019-11-15 23:24:39,951 INFO L168 Benchmark]: RCFGBuilder took 323.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-15 23:24:39,952 INFO L168 Benchmark]: TraceAbstraction took 6773.92 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 63.4 MB). Free memory was 1.1 GB in the beginning and 928.0 MB in the end (delta: 186.2 MB). Peak memory consumption was 249.6 MB. Max. memory is 11.5 GB. [2019-11-15 23:24:39,952 INFO L168 Benchmark]: Witness Printer took 71.00 ms. Allocated memory is still 1.2 GB. Free memory was 928.0 MB in the beginning and 925.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 11.5 GB. [2019-11-15 23:24:39,955 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 406.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -190.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 36.42 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 323.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6773.92 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 63.4 MB). Free memory was 1.1 GB in the beginning and 928.0 MB in the end (delta: 186.2 MB). Peak memory consumption was 249.6 MB. Max. memory is 11.5 GB. * Witness Printer took 71.00 ms. Allocated memory is still 1.2 GB. Free memory was 928.0 MB in the beginning and 925.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 32]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 32]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: n <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 31 locations, 4 error locations. Result: SAFE, OverallTime: 6.6s, OverallIterations: 11, TraceHistogramMax: 5, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 97 SDtfs, 273 SDslu, 681 SDs, 0 SdLazy, 1065 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 418 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 11 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 22 PreInvPairs, 23 NumberOfFragments, 52 HoareAnnotationTreeSize, 22 FomulaSimplifications, 988 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 332 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 574 NumberOfCodeBlocks, 574 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 556 ConstructedInterpolants, 0 QuantifiedInterpolants, 99740 SizeOfPredicates, 42 NumberOfNonLiveVariables, 469 ConjunctsInSsa, 106 ConjunctsInUnsatCore, 18 InterpolantComputations, 4 PerfectInterpolantSequences, 80/568 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...