./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/Fibonacci02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5c49cd89-899b-4433-83f2-31ee0be8de11/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5c49cd89-899b-4433-83f2-31ee0be8de11/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5c49cd89-899b-4433-83f2-31ee0be8de11/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5c49cd89-899b-4433-83f2-31ee0be8de11/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/Fibonacci02.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5c49cd89-899b-4433-83f2-31ee0be8de11/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5c49cd89-899b-4433-83f2-31ee0be8de11/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 675300a4b632e073b31d1e86ab5660e0c5ab887b .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 22:08:03,416 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:08:03,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:08:03,469 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:08:03,470 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:08:03,474 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:08:03,482 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:08:03,490 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:08:03,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:08:03,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:08:03,503 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:08:03,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:08:03,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:08:03,510 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:08:03,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:08:03,514 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:08:03,516 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:08:03,518 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:08:03,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:08:03,528 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:08:03,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:08:03,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:08:03,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:08:03,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:08:03,545 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:08:03,550 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:08:03,551 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:08:03,552 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:08:03,554 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:08:03,555 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:08:03,556 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:08:03,557 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:08:03,559 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:08:03,560 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:08:03,561 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:08:03,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:08:03,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:08:03,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:08:03,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:08:03,564 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:08:03,565 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:08:03,568 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5c49cd89-899b-4433-83f2-31ee0be8de11/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf [2020-11-29 22:08:03,619 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:08:03,619 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:08:03,621 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:08:03,621 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:08:03,622 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:08:03,622 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:08:03,622 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 22:08:03,623 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 22:08:03,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:08:03,623 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 22:08:03,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:08:03,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 22:08:03,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 22:08:03,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 22:08:03,625 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-29 22:08:03,625 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 22:08:03,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 22:08:03,626 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:08:03,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 22:08:03,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:08:03,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:08:03,627 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 22:08:03,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 22:08:03,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:08:03,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:08:03,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 22:08:03,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 22:08:03,628 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 22:08:03,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 22:08:03,629 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 22:08:03,629 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:08:03,629 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_5c49cd89-899b-4433-83f2-31ee0be8de11/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5c49cd89-899b-4433-83f2-31ee0be8de11/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 675300a4b632e073b31d1e86ab5660e0c5ab887b [2020-11-29 22:08:03,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:08:03,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:08:03,992 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:08:03,994 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:08:03,995 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:08:03,996 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5c49cd89-899b-4433-83f2-31ee0be8de11/bin/uautomizer/../../sv-benchmarks/c/recursive/Fibonacci02.c [2020-11-29 22:08:04,086 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5c49cd89-899b-4433-83f2-31ee0be8de11/bin/uautomizer/data/a35abf21c/6cbf9e6bcfda4f00a4a39f43e89dcb1c/FLAG6ce84fee2 [2020-11-29 22:08:04,639 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:08:04,639 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5c49cd89-899b-4433-83f2-31ee0be8de11/sv-benchmarks/c/recursive/Fibonacci02.c [2020-11-29 22:08:04,646 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5c49cd89-899b-4433-83f2-31ee0be8de11/bin/uautomizer/data/a35abf21c/6cbf9e6bcfda4f00a4a39f43e89dcb1c/FLAG6ce84fee2 [2020-11-29 22:08:05,046 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5c49cd89-899b-4433-83f2-31ee0be8de11/bin/uautomizer/data/a35abf21c/6cbf9e6bcfda4f00a4a39f43e89dcb1c [2020-11-29 22:08:05,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:08:05,050 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 22:08:05,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:08:05,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:08:05,057 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:08:05,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:08:05" (1/1) ... [2020-11-29 22:08:05,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fcc6abf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:08:05, skipping insertion in model container [2020-11-29 22:08:05,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:08:05" (1/1) ... [2020-11-29 22:08:05,066 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:08:05,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:08:05,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:08:05,272 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:08:05,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:08:05,301 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:08:05,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:08:05 WrapperNode [2020-11-29 22:08:05,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:08:05,303 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 22:08:05,303 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 22:08:05,304 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 22:08:05,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:08:05" (1/1) ... [2020-11-29 22:08:05,318 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:08:05" (1/1) ... [2020-11-29 22:08:05,335 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 22:08:05,336 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:08:05,336 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:08:05,336 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:08:05,345 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:08:05" (1/1) ... [2020-11-29 22:08:05,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:08:05" (1/1) ... [2020-11-29 22:08:05,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:08:05" (1/1) ... [2020-11-29 22:08:05,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:08:05" (1/1) ... [2020-11-29 22:08:05,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:08:05" (1/1) ... [2020-11-29 22:08:05,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:08:05" (1/1) ... [2020-11-29 22:08:05,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:08:05" (1/1) ... [2020-11-29 22:08:05,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:08:05,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:08:05,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:08:05,356 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:08:05,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:08:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5c49cd89-899b-4433-83f2-31ee0be8de11/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 [2020-11-29 22:08:05,431 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2020-11-29 22:08:05,432 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2020-11-29 22:08:05,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:08:05,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:08:05,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 22:08:05,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 22:08:05,735 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:08:05,736 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-29 22:08:05,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:08:05 BoogieIcfgContainer [2020-11-29 22:08:05,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:08:05,739 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 22:08:05,739 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 22:08:05,743 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 22:08:05,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 10:08:05" (1/3) ... [2020-11-29 22:08:05,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7550c47c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:08:05, skipping insertion in model container [2020-11-29 22:08:05,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:08:05" (2/3) ... [2020-11-29 22:08:05,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7550c47c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:08:05, skipping insertion in model container [2020-11-29 22:08:05,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:08:05" (3/3) ... [2020-11-29 22:08:05,746 INFO L111 eAbstractionObserver]: Analyzing ICFG Fibonacci02.c [2020-11-29 22:08:05,757 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 22:08:05,760 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-29 22:08:05,772 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-29 22:08:05,810 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 22:08:05,811 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 22:08:05,811 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 22:08:05,811 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:08:05,811 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:08:05,811 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 22:08:05,812 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:08:05,812 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 22:08:05,837 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-11-29 22:08:05,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 22:08:05,841 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:08:05,842 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:08:05,843 INFO L429 AbstractCegarLoop]: === Iteration 1 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:08:05,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:08:05,850 INFO L82 PathProgramCache]: Analyzing trace with hash -106871919, now seen corresponding path program 1 times [2020-11-29 22:08:05,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:08:05,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311976683] [2020-11-29 22:08:05,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:08:06,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:06,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:08:06,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311976683] [2020-11-29 22:08:06,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:08:06,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:08:06,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318258425] [2020-11-29 22:08:06,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:08:06,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:08:06,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:08:06,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:08:06,160 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-11-29 22:08:06,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:08:06,290 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2020-11-29 22:08:06,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:08:06,292 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-11-29 22:08:06,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:08:06,300 INFO L225 Difference]: With dead ends: 34 [2020-11-29 22:08:06,300 INFO L226 Difference]: Without dead ends: 22 [2020-11-29 22:08:06,304 INFO L677 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 [2020-11-29 22:08:06,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-29 22:08:06,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-11-29 22:08:06,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-29 22:08:06,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-11-29 22:08:06,347 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 7 [2020-11-29 22:08:06,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:08:06,348 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-11-29 22:08:06,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:08:06,348 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-11-29 22:08:06,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 22:08:06,350 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:08:06,350 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:08:06,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 22:08:06,351 INFO L429 AbstractCegarLoop]: === Iteration 2 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:08:06,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:08:06,351 INFO L82 PathProgramCache]: Analyzing trace with hash 981937849, now seen corresponding path program 1 times [2020-11-29 22:08:06,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:08:06,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712351687] [2020-11-29 22:08:06,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:08:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:06,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:08:06,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712351687] [2020-11-29 22:08:06,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:08:06,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 22:08:06,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410816678] [2020-11-29 22:08:06,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:08:06,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:08:06,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:08:06,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:08:06,391 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 3 states. [2020-11-29 22:08:06,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:08:06,451 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2020-11-29 22:08:06,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:08:06,452 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-29 22:08:06,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:08:06,454 INFO L225 Difference]: With dead ends: 24 [2020-11-29 22:08:06,454 INFO L226 Difference]: Without dead ends: 22 [2020-11-29 22:08:06,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:08:06,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-29 22:08:06,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2020-11-29 22:08:06,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-29 22:08:06,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-11-29 22:08:06,462 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 8 [2020-11-29 22:08:06,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:08:06,463 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-11-29 22:08:06,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:08:06,463 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-11-29 22:08:06,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-29 22:08:06,464 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:08:06,465 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:08:06,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 22:08:06,465 INFO L429 AbstractCegarLoop]: === Iteration 3 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:08:06,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:08:06,466 INFO L82 PathProgramCache]: Analyzing trace with hash -590814878, now seen corresponding path program 1 times [2020-11-29 22:08:06,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:08:06,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449375978] [2020-11-29 22:08:06,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:08:06,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:06,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:06,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:06,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-11-29 22:08:06,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:06,624 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-11-29 22:08:06,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449375978] [2020-11-29 22:08:06,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:08:06,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:08:06,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63673658] [2020-11-29 22:08:06,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:08:06,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:08:06,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:08:06,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:08:06,627 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 5 states. [2020-11-29 22:08:06,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:08:06,704 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2020-11-29 22:08:06,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:08:06,705 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-11-29 22:08:06,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:08:06,706 INFO L225 Difference]: With dead ends: 36 [2020-11-29 22:08:06,706 INFO L226 Difference]: Without dead ends: 34 [2020-11-29 22:08:06,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:08:06,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-29 22:08:06,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2020-11-29 22:08:06,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-29 22:08:06,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2020-11-29 22:08:06,717 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 29 [2020-11-29 22:08:06,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:08:06,718 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2020-11-29 22:08:06,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:08:06,718 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2020-11-29 22:08:06,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-29 22:08:06,720 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:08:06,720 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:08:06,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 22:08:06,720 INFO L429 AbstractCegarLoop]: === Iteration 4 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:08:06,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:08:06,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1123986896, now seen corresponding path program 1 times [2020-11-29 22:08:06,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:08:06,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261393693] [2020-11-29 22:08:06,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:08:06,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:06,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:06,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:06,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-11-29 22:08:06,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:06,879 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-11-29 22:08:06,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261393693] [2020-11-29 22:08:06,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890191504] [2020-11-29 22:08:06,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5c49cd89-899b-4433-83f2-31ee0be8de11/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 [2020-11-29 22:08:06,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:06,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 22:08:06,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:08:07,179 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:08:07,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:08:07,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9] total 13 [2020-11-29 22:08:07,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637141010] [2020-11-29 22:08:07,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-29 22:08:07,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:08:07,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-29 22:08:07,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-11-29 22:08:07,183 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand 13 states. [2020-11-29 22:08:07,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:08:07,764 INFO L93 Difference]: Finished difference Result 126 states and 172 transitions. [2020-11-29 22:08:07,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 22:08:07,766 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 30 [2020-11-29 22:08:07,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:08:07,768 INFO L225 Difference]: With dead ends: 126 [2020-11-29 22:08:07,768 INFO L226 Difference]: Without dead ends: 93 [2020-11-29 22:08:07,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2020-11-29 22:08:07,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-11-29 22:08:07,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 81. [2020-11-29 22:08:07,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-11-29 22:08:07,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 112 transitions. [2020-11-29 22:08:07,815 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 112 transitions. Word has length 30 [2020-11-29 22:08:07,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:08:07,816 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 112 transitions. [2020-11-29 22:08:07,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-29 22:08:07,816 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 112 transitions. [2020-11-29 22:08:07,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-29 22:08:07,819 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:08:07,819 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:08:08,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:08:08,043 INFO L429 AbstractCegarLoop]: === Iteration 5 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:08:08,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:08:08,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1103541404, now seen corresponding path program 1 times [2020-11-29 22:08:08,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:08:08,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737813235] [2020-11-29 22:08:08,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:08:08,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:08,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:08,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:08:08,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:08,170 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-11-29 22:08:08,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737813235] [2020-11-29 22:08:08,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:08:08,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:08:08,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596135580] [2020-11-29 22:08:08,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:08:08,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:08:08,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:08:08,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:08:08,173 INFO L87 Difference]: Start difference. First operand 81 states and 112 transitions. Second operand 5 states. [2020-11-29 22:08:08,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:08:08,253 INFO L93 Difference]: Finished difference Result 107 states and 159 transitions. [2020-11-29 22:08:08,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:08:08,254 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-11-29 22:08:08,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:08:08,265 INFO L225 Difference]: With dead ends: 107 [2020-11-29 22:08:08,266 INFO L226 Difference]: Without dead ends: 105 [2020-11-29 22:08:08,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:08:08,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-11-29 22:08:08,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 97. [2020-11-29 22:08:08,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-11-29 22:08:08,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 145 transitions. [2020-11-29 22:08:08,293 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 145 transitions. Word has length 31 [2020-11-29 22:08:08,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:08:08,293 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 145 transitions. [2020-11-29 22:08:08,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:08:08,294 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 145 transitions. [2020-11-29 22:08:08,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-29 22:08:08,296 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:08:08,296 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:08:08,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 22:08:08,296 INFO L429 AbstractCegarLoop]: === Iteration 6 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:08:08,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:08:08,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1534696655, now seen corresponding path program 2 times [2020-11-29 22:08:08,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:08:08,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672149198] [2020-11-29 22:08:08,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:08:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:08,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-11-29 22:08:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:08,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-29 22:08:08,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:08,422 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-11-29 22:08:08,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672149198] [2020-11-29 22:08:08,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896779060] [2020-11-29 22:08:08,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5c49cd89-899b-4433-83f2-31ee0be8de11/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 [2020-11-29 22:08:08,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 22:08:08,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:08:08,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 22:08:08,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:08:08,553 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-11-29 22:08:08,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:08:08,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2020-11-29 22:08:08,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323302593] [2020-11-29 22:08:08,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:08:08,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:08:08,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:08:08,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-29 22:08:08,557 INFO L87 Difference]: Start difference. First operand 97 states and 145 transitions. Second operand 5 states. [2020-11-29 22:08:08,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:08:08,608 INFO L93 Difference]: Finished difference Result 105 states and 153 transitions. [2020-11-29 22:08:08,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:08:08,609 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-11-29 22:08:08,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:08:08,611 INFO L225 Difference]: With dead ends: 105 [2020-11-29 22:08:08,611 INFO L226 Difference]: Without dead ends: 104 [2020-11-29 22:08:08,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-29 22:08:08,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-11-29 22:08:08,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 99. [2020-11-29 22:08:08,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-11-29 22:08:08,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 147 transitions. [2020-11-29 22:08:08,633 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 147 transitions. Word has length 36 [2020-11-29 22:08:08,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:08:08,634 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 147 transitions. [2020-11-29 22:08:08,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:08:08,634 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 147 transitions. [2020-11-29 22:08:08,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-29 22:08:08,636 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:08:08,636 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:08:08,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:08:08,850 INFO L429 AbstractCegarLoop]: === Iteration 7 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:08:08,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:08:08,851 INFO L82 PathProgramCache]: Analyzing trace with hash 215196684, now seen corresponding path program 1 times [2020-11-29 22:08:08,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:08:08,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330459307] [2020-11-29 22:08:08,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:08:08,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:08,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:08,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:08,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-29 22:08:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:08,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-29 22:08:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:09,011 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-11-29 22:08:09,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330459307] [2020-11-29 22:08:09,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464514601] [2020-11-29 22:08:09,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5c49cd89-899b-4433-83f2-31ee0be8de11/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 [2020-11-29 22:08:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:09,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 22:08:09,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:08:09,246 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 34 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-11-29 22:08:09,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:08:09,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9] total 13 [2020-11-29 22:08:09,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390550497] [2020-11-29 22:08:09,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-29 22:08:09,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:08:09,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-29 22:08:09,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-11-29 22:08:09,253 INFO L87 Difference]: Start difference. First operand 99 states and 147 transitions. Second operand 13 states. [2020-11-29 22:08:09,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:08:09,959 INFO L93 Difference]: Finished difference Result 186 states and 280 transitions. [2020-11-29 22:08:09,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-29 22:08:09,961 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2020-11-29 22:08:09,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:08:09,963 INFO L225 Difference]: With dead ends: 186 [2020-11-29 22:08:09,964 INFO L226 Difference]: Without dead ends: 119 [2020-11-29 22:08:09,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2020-11-29 22:08:09,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-11-29 22:08:09,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 101. [2020-11-29 22:08:09,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-11-29 22:08:09,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 155 transitions. [2020-11-29 22:08:09,991 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 155 transitions. Word has length 46 [2020-11-29 22:08:09,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:08:09,991 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 155 transitions. [2020-11-29 22:08:09,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-29 22:08:09,992 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 155 transitions. [2020-11-29 22:08:09,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-11-29 22:08:09,995 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:08:09,995 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:08:10,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:08:10,222 INFO L429 AbstractCegarLoop]: === Iteration 8 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:08:10,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:08:10,223 INFO L82 PathProgramCache]: Analyzing trace with hash -693319985, now seen corresponding path program 1 times [2020-11-29 22:08:10,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:08:10,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373088073] [2020-11-29 22:08:10,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:08:10,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:10,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-29 22:08:10,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:10,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-11-29 22:08:10,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:10,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:10,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:10,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:10,378 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-11-29 22:08:10,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373088073] [2020-11-29 22:08:10,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952203411] [2020-11-29 22:08:10,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5c49cd89-899b-4433-83f2-31ee0be8de11/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 [2020-11-29 22:08:10,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:10,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 22:08:10,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:08:10,688 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 60 proven. 44 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-11-29 22:08:10,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:08:10,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 13] total 16 [2020-11-29 22:08:10,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243663450] [2020-11-29 22:08:10,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-29 22:08:10,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:08:10,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-29 22:08:10,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-11-29 22:08:10,691 INFO L87 Difference]: Start difference. First operand 101 states and 155 transitions. Second operand 16 states. [2020-11-29 22:08:11,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:08:11,283 INFO L93 Difference]: Finished difference Result 262 states and 422 transitions. [2020-11-29 22:08:11,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-29 22:08:11,284 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 62 [2020-11-29 22:08:11,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:08:11,287 INFO L225 Difference]: With dead ends: 262 [2020-11-29 22:08:11,287 INFO L226 Difference]: Without dead ends: 176 [2020-11-29 22:08:11,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2020-11-29 22:08:11,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-11-29 22:08:11,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 156. [2020-11-29 22:08:11,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-11-29 22:08:11,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 232 transitions. [2020-11-29 22:08:11,342 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 232 transitions. Word has length 62 [2020-11-29 22:08:11,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:08:11,344 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 232 transitions. [2020-11-29 22:08:11,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-29 22:08:11,344 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 232 transitions. [2020-11-29 22:08:11,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-11-29 22:08:11,348 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:08:11,349 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:08:11,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:08:11,578 INFO L429 AbstractCegarLoop]: === Iteration 9 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:08:11,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:08:11,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1162938815, now seen corresponding path program 2 times [2020-11-29 22:08:11,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:08:11,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582927019] [2020-11-29 22:08:11,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:08:11,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:11,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-29 22:08:11,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:11,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-11-29 22:08:11,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:11,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:11,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-29 22:08:11,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:11,793 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 2 proven. 107 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-29 22:08:11,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582927019] [2020-11-29 22:08:11,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267426260] [2020-11-29 22:08:11,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5c49cd89-899b-4433-83f2-31ee0be8de11/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 [2020-11-29 22:08:11,854 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 22:08:11,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:08:11,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 22:08:11,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:08:11,926 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 58 proven. 48 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-11-29 22:08:11,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:08:11,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2020-11-29 22:08:11,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047044913] [2020-11-29 22:08:11,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-29 22:08:11,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:08:11,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-29 22:08:11,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-11-29 22:08:11,932 INFO L87 Difference]: Start difference. First operand 156 states and 232 transitions. Second operand 14 states. [2020-11-29 22:08:12,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:08:12,255 INFO L93 Difference]: Finished difference Result 285 states and 425 transitions. [2020-11-29 22:08:12,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 22:08:12,255 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 62 [2020-11-29 22:08:12,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:08:12,257 INFO L225 Difference]: With dead ends: 285 [2020-11-29 22:08:12,257 INFO L226 Difference]: Without dead ends: 157 [2020-11-29 22:08:12,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2020-11-29 22:08:12,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-11-29 22:08:12,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 149. [2020-11-29 22:08:12,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-11-29 22:08:12,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 215 transitions. [2020-11-29 22:08:12,289 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 215 transitions. Word has length 62 [2020-11-29 22:08:12,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:08:12,290 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 215 transitions. [2020-11-29 22:08:12,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-29 22:08:12,290 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 215 transitions. [2020-11-29 22:08:12,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-11-29 22:08:12,293 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:08:12,293 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-29 22:08:12,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:08:12,506 INFO L429 AbstractCegarLoop]: === Iteration 10 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:08:12,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:08:12,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1938920684, now seen corresponding path program 1 times [2020-11-29 22:08:12,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:08:12,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300198397] [2020-11-29 22:08:12,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:08:12,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:12,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-29 22:08:12,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:12,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-11-29 22:08:12,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:12,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:12,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:12,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:12,598 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2020-11-29 22:08:12,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300198397] [2020-11-29 22:08:12,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135929161] [2020-11-29 22:08:12,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5c49cd89-899b-4433-83f2-31ee0be8de11/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 [2020-11-29 22:08:12,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:12,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-29 22:08:12,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:08:12,961 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 72 proven. 70 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-11-29 22:08:12,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:08:12,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 15] total 18 [2020-11-29 22:08:12,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184801288] [2020-11-29 22:08:12,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-29 22:08:12,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:08:12,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-29 22:08:12,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2020-11-29 22:08:12,964 INFO L87 Difference]: Start difference. First operand 149 states and 215 transitions. Second operand 18 states. [2020-11-29 22:08:13,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:08:13,625 INFO L93 Difference]: Finished difference Result 335 states and 505 transitions. [2020-11-29 22:08:13,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-29 22:08:13,626 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 69 [2020-11-29 22:08:13,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:08:13,628 INFO L225 Difference]: With dead ends: 335 [2020-11-29 22:08:13,628 INFO L226 Difference]: Without dead ends: 201 [2020-11-29 22:08:13,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2020-11-29 22:08:13,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-11-29 22:08:13,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 175. [2020-11-29 22:08:13,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-11-29 22:08:13,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 244 transitions. [2020-11-29 22:08:13,668 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 244 transitions. Word has length 69 [2020-11-29 22:08:13,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:08:13,668 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 244 transitions. [2020-11-29 22:08:13,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-11-29 22:08:13,668 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 244 transitions. [2020-11-29 22:08:13,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-11-29 22:08:13,675 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:08:13,675 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:08:13,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:08:13,898 INFO L429 AbstractCegarLoop]: === Iteration 11 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:08:13,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:08:13,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1087520634, now seen corresponding path program 3 times [2020-11-29 22:08:13,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:08:13,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636115121] [2020-11-29 22:08:13,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:08:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:14,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-29 22:08:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:14,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-29 22:08:14,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:14,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:14,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:14,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-29 22:08:14,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:14,106 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 2 proven. 145 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-29 22:08:14,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636115121] [2020-11-29 22:08:14,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159193935] [2020-11-29 22:08:14,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5c49cd89-899b-4433-83f2-31ee0be8de11/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 [2020-11-29 22:08:14,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-29 22:08:14,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:08:14,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 22:08:14,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:08:14,310 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 35 proven. 3 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2020-11-29 22:08:14,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:08:14,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7] total 20 [2020-11-29 22:08:14,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011097371] [2020-11-29 22:08:14,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-29 22:08:14,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:08:14,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-29 22:08:14,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2020-11-29 22:08:14,320 INFO L87 Difference]: Start difference. First operand 175 states and 244 transitions. Second operand 20 states. [2020-11-29 22:08:14,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:08:14,986 INFO L93 Difference]: Finished difference Result 347 states and 517 transitions. [2020-11-29 22:08:14,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-29 22:08:14,988 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 68 [2020-11-29 22:08:14,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:08:14,992 INFO L225 Difference]: With dead ends: 347 [2020-11-29 22:08:14,992 INFO L226 Difference]: Without dead ends: 187 [2020-11-29 22:08:14,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2020-11-29 22:08:14,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-11-29 22:08:15,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 177. [2020-11-29 22:08:15,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-11-29 22:08:15,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 239 transitions. [2020-11-29 22:08:15,017 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 239 transitions. Word has length 68 [2020-11-29 22:08:15,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:08:15,017 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 239 transitions. [2020-11-29 22:08:15,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-11-29 22:08:15,018 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 239 transitions. [2020-11-29 22:08:15,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-11-29 22:08:15,019 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:08:15,019 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 8, 8, 8, 8, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-29 22:08:15,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:08:15,234 INFO L429 AbstractCegarLoop]: === Iteration 12 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:08:15,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:08:15,235 INFO L82 PathProgramCache]: Analyzing trace with hash -564936898, now seen corresponding path program 1 times [2020-11-29 22:08:15,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:08:15,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913883722] [2020-11-29 22:08:15,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:08:15,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:15,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-11-29 22:08:15,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:15,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-29 22:08:15,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:15,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:15,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:15,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:15,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:15,553 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 2 proven. 247 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-11-29 22:08:15,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913883722] [2020-11-29 22:08:15,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785511872] [2020-11-29 22:08:15,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5c49cd89-899b-4433-83f2-31ee0be8de11/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:08:15,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:15,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-29 22:08:15,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:08:15,709 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 99 proven. 147 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-11-29 22:08:15,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:08:15,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-11-29 22:08:15,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511538759] [2020-11-29 22:08:15,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-29 22:08:15,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:08:15,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-29 22:08:15,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-11-29 22:08:15,712 INFO L87 Difference]: Start difference. First operand 177 states and 239 transitions. Second operand 20 states. [2020-11-29 22:08:16,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:08:16,277 INFO L93 Difference]: Finished difference Result 416 states and 603 transitions. [2020-11-29 22:08:16,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-29 22:08:16,278 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 81 [2020-11-29 22:08:16,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:08:16,280 INFO L225 Difference]: With dead ends: 416 [2020-11-29 22:08:16,280 INFO L226 Difference]: Without dead ends: 254 [2020-11-29 22:08:16,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756 [2020-11-29 22:08:16,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-11-29 22:08:16,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 227. [2020-11-29 22:08:16,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-11-29 22:08:16,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 306 transitions. [2020-11-29 22:08:16,304 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 306 transitions. Word has length 81 [2020-11-29 22:08:16,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:08:16,305 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 306 transitions. [2020-11-29 22:08:16,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-11-29 22:08:16,305 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 306 transitions. [2020-11-29 22:08:16,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-11-29 22:08:16,307 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:08:16,307 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 10, 10, 10, 10, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:08:16,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-29 22:08:16,526 INFO L429 AbstractCegarLoop]: === Iteration 13 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:08:16,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:08:16,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1662734240, now seen corresponding path program 4 times [2020-11-29 22:08:16,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:08:16,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846678180] [2020-11-29 22:08:16,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:08:16,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:16,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-11-29 22:08:16,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:16,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-11-29 22:08:16,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:16,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:16,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:16,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:16,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:16,868 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 218 proven. 130 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-11-29 22:08:16,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846678180] [2020-11-29 22:08:16,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656379982] [2020-11-29 22:08:16,869 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5c49cd89-899b-4433-83f2-31ee0be8de11/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:08:16,924 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 22:08:16,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:08:16,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-29 22:08:16,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:08:17,022 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 329 proven. 27 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-11-29 22:08:17,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:08:17,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23] total 24 [2020-11-29 22:08:17,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074723688] [2020-11-29 22:08:17,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-29 22:08:17,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:08:17,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-29 22:08:17,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2020-11-29 22:08:17,031 INFO L87 Difference]: Start difference. First operand 227 states and 306 transitions. Second operand 24 states. [2020-11-29 22:08:18,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:08:18,115 INFO L93 Difference]: Finished difference Result 430 states and 588 transitions. [2020-11-29 22:08:18,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-11-29 22:08:18,115 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 92 [2020-11-29 22:08:18,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:08:18,117 INFO L225 Difference]: With dead ends: 430 [2020-11-29 22:08:18,117 INFO L226 Difference]: Without dead ends: 214 [2020-11-29 22:08:18,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=557, Invalid=1335, Unknown=0, NotChecked=0, Total=1892 [2020-11-29 22:08:18,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-11-29 22:08:18,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 202. [2020-11-29 22:08:18,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-11-29 22:08:18,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 243 transitions. [2020-11-29 22:08:18,136 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 243 transitions. Word has length 92 [2020-11-29 22:08:18,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:08:18,136 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 243 transitions. [2020-11-29 22:08:18,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-11-29 22:08:18,137 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 243 transitions. [2020-11-29 22:08:18,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-11-29 22:08:18,139 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:08:18,139 INFO L422 BasicCegarLoop]: trace histogram [11, 9, 8, 8, 8, 8, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:08:18,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:08:18,354 INFO L429 AbstractCegarLoop]: === Iteration 14 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:08:18,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:08:18,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1742396462, now seen corresponding path program 5 times [2020-11-29 22:08:18,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:08:18,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229388326] [2020-11-29 22:08:18,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:08:18,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:18,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-11-29 22:08:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:18,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:18,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:18,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-29 22:08:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:18,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-11-29 22:08:18,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:18,475 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 40 proven. 9 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2020-11-29 22:08:18,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229388326] [2020-11-29 22:08:18,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649438598] [2020-11-29 22:08:18,475 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5c49cd89-899b-4433-83f2-31ee0be8de11/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:08:18,532 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2020-11-29 22:08:18,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:08:18,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 22:08:18,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:08:18,582 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-11-29 22:08:18,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:08:18,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2020-11-29 22:08:18,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651121334] [2020-11-29 22:08:18,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 22:08:18,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:08:18,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 22:08:18,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-29 22:08:18,586 INFO L87 Difference]: Start difference. First operand 202 states and 243 transitions. Second operand 6 states. [2020-11-29 22:08:18,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:08:18,685 INFO L93 Difference]: Finished difference Result 320 states and 402 transitions. [2020-11-29 22:08:18,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 22:08:18,689 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-11-29 22:08:18,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:08:18,691 INFO L225 Difference]: With dead ends: 320 [2020-11-29 22:08:18,691 INFO L226 Difference]: Without dead ends: 133 [2020-11-29 22:08:18,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 86 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-11-29 22:08:18,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-11-29 22:08:18,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2020-11-29 22:08:18,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-11-29 22:08:18,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 153 transitions. [2020-11-29 22:08:18,704 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 153 transitions. Word has length 79 [2020-11-29 22:08:18,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:08:18,704 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 153 transitions. [2020-11-29 22:08:18,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 22:08:18,704 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 153 transitions. [2020-11-29 22:08:18,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-11-29 22:08:18,705 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:08:18,706 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 8, 8, 8, 8, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:08:18,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:08:18,930 INFO L429 AbstractCegarLoop]: === Iteration 15 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:08:18,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:08:18,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1709732714, now seen corresponding path program 6 times [2020-11-29 22:08:18,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:08:18,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531912428] [2020-11-29 22:08:18,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:08:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:18,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-11-29 22:08:18,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:19,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:19,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:19,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:19,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-11-29 22:08:19,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:19,079 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2020-11-29 22:08:19,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531912428] [2020-11-29 22:08:19,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040133566] [2020-11-29 22:08:19,081 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5c49cd89-899b-4433-83f2-31ee0be8de11/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:08:19,119 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-11-29 22:08:19,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:08:19,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 22:08:19,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:08:19,192 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2020-11-29 22:08:19,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:08:19,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2020-11-29 22:08:19,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661629856] [2020-11-29 22:08:19,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 22:08:19,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:08:19,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 22:08:19,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-11-29 22:08:19,199 INFO L87 Difference]: Start difference. First operand 133 states and 153 transitions. Second operand 10 states. [2020-11-29 22:08:19,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:08:19,317 INFO L93 Difference]: Finished difference Result 145 states and 166 transitions. [2020-11-29 22:08:19,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 22:08:19,318 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 80 [2020-11-29 22:08:19,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:08:19,319 INFO L225 Difference]: With dead ends: 145 [2020-11-29 22:08:19,319 INFO L226 Difference]: Without dead ends: 144 [2020-11-29 22:08:19,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-11-29 22:08:19,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-11-29 22:08:19,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 141. [2020-11-29 22:08:19,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-11-29 22:08:19,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 162 transitions. [2020-11-29 22:08:19,333 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 162 transitions. Word has length 80 [2020-11-29 22:08:19,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:08:19,333 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 162 transitions. [2020-11-29 22:08:19,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 22:08:19,334 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 162 transitions. [2020-11-29 22:08:19,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-11-29 22:08:19,335 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:08:19,335 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 8, 8, 8, 8, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-29 22:08:19,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-29 22:08:19,550 INFO L429 AbstractCegarLoop]: === Iteration 16 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:08:19,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:08:19,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1462106636, now seen corresponding path program 2 times [2020-11-29 22:08:19,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:08:19,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430986750] [2020-11-29 22:08:19,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:08:19,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:19,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-11-29 22:08:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:19,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:19,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:19,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:19,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-11-29 22:08:19,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:19,639 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2020-11-29 22:08:19,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430986750] [2020-11-29 22:08:19,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:08:19,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:08:19,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654789428] [2020-11-29 22:08:19,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:08:19,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:08:19,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:08:19,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:08:19,642 INFO L87 Difference]: Start difference. First operand 141 states and 162 transitions. Second operand 5 states. [2020-11-29 22:08:19,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:08:19,688 INFO L93 Difference]: Finished difference Result 142 states and 162 transitions. [2020-11-29 22:08:19,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:08:19,689 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-11-29 22:08:19,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:08:19,690 INFO L225 Difference]: With dead ends: 142 [2020-11-29 22:08:19,690 INFO L226 Difference]: Without dead ends: 141 [2020-11-29 22:08:19,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:08:19,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-11-29 22:08:19,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2020-11-29 22:08:19,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-11-29 22:08:19,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 161 transitions. [2020-11-29 22:08:19,701 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 161 transitions. Word has length 81 [2020-11-29 22:08:19,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:08:19,701 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 161 transitions. [2020-11-29 22:08:19,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:08:19,702 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 161 transitions. [2020-11-29 22:08:19,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-11-29 22:08:19,703 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:08:19,703 INFO L422 BasicCegarLoop]: trace histogram [14, 11, 9, 9, 9, 9, 8, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1] [2020-11-29 22:08:19,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-29 22:08:19,704 INFO L429 AbstractCegarLoop]: === Iteration 17 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:08:19,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:08:19,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1098032945, now seen corresponding path program 3 times [2020-11-29 22:08:19,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:08:19,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583920011] [2020-11-29 22:08:19,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:08:19,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:19,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-29 22:08:19,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:19,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:19,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:20,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:20,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:20,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:20,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:20,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-29 22:08:20,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:20,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-11-29 22:08:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:20,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:20,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:20,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:20,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:20,123 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 41 proven. 326 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-11-29 22:08:20,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583920011] [2020-11-29 22:08:20,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589004356] [2020-11-29 22:08:20,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5c49cd89-899b-4433-83f2-31ee0be8de11/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:08:20,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-11-29 22:08:20,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:08:20,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 22:08:20,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:08:20,397 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 62 proven. 5 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2020-11-29 22:08:20,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:08:20,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 7] total 26 [2020-11-29 22:08:20,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724707523] [2020-11-29 22:08:20,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-29 22:08:20,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:08:20,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-29 22:08:20,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2020-11-29 22:08:20,400 INFO L87 Difference]: Start difference. First operand 141 states and 161 transitions. Second operand 26 states. [2020-11-29 22:08:22,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:08:22,163 INFO L93 Difference]: Finished difference Result 263 states and 306 transitions. [2020-11-29 22:08:22,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-29 22:08:22,164 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 113 [2020-11-29 22:08:22,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:08:22,165 INFO L225 Difference]: With dead ends: 263 [2020-11-29 22:08:22,165 INFO L226 Difference]: Without dead ends: 136 [2020-11-29 22:08:22,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=722, Invalid=2584, Unknown=0, NotChecked=0, Total=3306 [2020-11-29 22:08:22,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-11-29 22:08:22,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 128. [2020-11-29 22:08:22,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-11-29 22:08:22,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 140 transitions. [2020-11-29 22:08:22,179 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 140 transitions. Word has length 113 [2020-11-29 22:08:22,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:08:22,179 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 140 transitions. [2020-11-29 22:08:22,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-11-29 22:08:22,180 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 140 transitions. [2020-11-29 22:08:22,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-11-29 22:08:22,181 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:08:22,181 INFO L422 BasicCegarLoop]: trace histogram [14, 12, 9, 9, 9, 9, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1] [2020-11-29 22:08:22,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-29 22:08:22,402 INFO L429 AbstractCegarLoop]: === Iteration 18 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:08:22,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:08:22,403 INFO L82 PathProgramCache]: Analyzing trace with hash 184820579, now seen corresponding path program 7 times [2020-11-29 22:08:22,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:08:22,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876960537] [2020-11-29 22:08:22,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:08:22,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:22,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-29 22:08:22,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:22,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:22,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:22,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:22,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:22,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:22,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-29 22:08:22,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:22,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-29 22:08:22,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:22,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:22,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:22,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:22,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:22,597 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 23 proven. 35 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2020-11-29 22:08:22,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876960537] [2020-11-29 22:08:22,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958086557] [2020-11-29 22:08:22,598 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5c49cd89-899b-4433-83f2-31ee0be8de11/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:08:22,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:22,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-29 22:08:22,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:08:22,793 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 23 proven. 35 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2020-11-29 22:08:22,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:08:22,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2020-11-29 22:08:22,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916907757] [2020-11-29 22:08:22,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-29 22:08:22,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:08:22,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-29 22:08:22,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-11-29 22:08:22,795 INFO L87 Difference]: Start difference. First operand 128 states and 140 transitions. Second operand 13 states. [2020-11-29 22:08:22,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:08:22,883 INFO L93 Difference]: Finished difference Result 129 states and 140 transitions. [2020-11-29 22:08:22,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 22:08:22,883 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 113 [2020-11-29 22:08:22,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:08:22,885 INFO L225 Difference]: With dead ends: 129 [2020-11-29 22:08:22,885 INFO L226 Difference]: Without dead ends: 128 [2020-11-29 22:08:22,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-11-29 22:08:22,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-11-29 22:08:22,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-11-29 22:08:22,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-11-29 22:08:22,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 139 transitions. [2020-11-29 22:08:22,894 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 139 transitions. Word has length 113 [2020-11-29 22:08:22,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:08:22,894 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 139 transitions. [2020-11-29 22:08:22,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-29 22:08:22,894 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 139 transitions. [2020-11-29 22:08:22,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-11-29 22:08:22,896 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:08:22,897 INFO L422 BasicCegarLoop]: trace histogram [19, 16, 14, 11, 11, 11, 11, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 3, 1, 1, 1, 1] [2020-11-29 22:08:23,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-11-29 22:08:23,122 INFO L429 AbstractCegarLoop]: === Iteration 19 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:08:23,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:08:23,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1759322589, now seen corresponding path program 8 times [2020-11-29 22:08:23,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:08:23,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418056014] [2020-11-29 22:08:23,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:08:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:23,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-29 22:08:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:23,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:23,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:23,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:23,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:23,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:23,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:23,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:23,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:23,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-29 22:08:23,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:23,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-29 22:08:23,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:23,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:23,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:23,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:23,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:23,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-11-29 22:08:23,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:23,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:23,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:23,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:23,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:23,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-29 22:08:23,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:23,418 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 78 proven. 129 refuted. 0 times theorem prover too weak. 743 trivial. 0 not checked. [2020-11-29 22:08:23,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418056014] [2020-11-29 22:08:23,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064101] [2020-11-29 22:08:23,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5c49cd89-899b-4433-83f2-31ee0be8de11/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:08:23,497 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 22:08:23,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:08:23,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-29 22:08:23,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:08:23,671 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 78 proven. 129 refuted. 0 times theorem prover too weak. 743 trivial. 0 not checked. [2020-11-29 22:08:23,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:08:23,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 16 [2020-11-29 22:08:23,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454486583] [2020-11-29 22:08:23,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-29 22:08:23,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:08:23,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-29 22:08:23,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-11-29 22:08:23,673 INFO L87 Difference]: Start difference. First operand 128 states and 139 transitions. Second operand 17 states. [2020-11-29 22:08:23,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:08:23,775 INFO L93 Difference]: Finished difference Result 129 states and 139 transitions. [2020-11-29 22:08:23,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 22:08:23,776 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 166 [2020-11-29 22:08:23,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:08:23,778 INFO L225 Difference]: With dead ends: 129 [2020-11-29 22:08:23,778 INFO L226 Difference]: Without dead ends: 128 [2020-11-29 22:08:23,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-11-29 22:08:23,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-11-29 22:08:23,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-11-29 22:08:23,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-11-29 22:08:23,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 138 transitions. [2020-11-29 22:08:23,785 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 138 transitions. Word has length 166 [2020-11-29 22:08:23,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:08:23,786 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 138 transitions. [2020-11-29 22:08:23,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-29 22:08:23,786 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 138 transitions. [2020-11-29 22:08:23,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-11-29 22:08:23,791 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:08:23,791 INFO L422 BasicCegarLoop]: trace histogram [28, 24, 23, 15, 15, 15, 15, 12, 12, 12, 12, 12, 12, 12, 11, 11, 8, 5, 1, 1, 1, 1] [2020-11-29 22:08:24,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:08:24,018 INFO L429 AbstractCegarLoop]: === Iteration 20 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:08:24,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:08:24,018 INFO L82 PathProgramCache]: Analyzing trace with hash 354520261, now seen corresponding path program 9 times [2020-11-29 22:08:24,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:08:24,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879592747] [2020-11-29 22:08:24,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:08:24,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:24,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-29 22:08:24,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:24,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:24,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:24,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:24,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:24,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:24,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:24,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:24,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:24,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-29 22:08:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:24,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-29 22:08:24,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:24,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:24,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:24,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:24,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:24,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-11-29 22:08:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:24,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:24,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:24,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:24,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:24,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:24,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:24,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-29 22:08:24,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:24,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-11-29 22:08:24,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:24,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:24,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:24,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:24,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:24,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:24,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:24,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-29 22:08:24,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:24,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-29 22:08:24,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:24,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:24,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:24,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:24,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:24,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2327 backedges. 272 proven. 389 refuted. 0 times theorem prover too weak. 1666 trivial. 0 not checked. [2020-11-29 22:08:24,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879592747] [2020-11-29 22:08:24,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169825404] [2020-11-29 22:08:24,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5c49cd89-899b-4433-83f2-31ee0be8de11/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:08:24,742 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2020-11-29 22:08:24,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:08:24,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 49 conjunts are in the unsatisfiable core [2020-11-29 22:08:24,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:08:25,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2327 backedges. 272 proven. 389 refuted. 0 times theorem prover too weak. 1666 trivial. 0 not checked. [2020-11-29 22:08:25,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:08:25,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 20 [2020-11-29 22:08:25,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590050174] [2020-11-29 22:08:25,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-11-29 22:08:25,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:08:25,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-29 22:08:25,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2020-11-29 22:08:25,042 INFO L87 Difference]: Start difference. First operand 128 states and 138 transitions. Second operand 21 states. [2020-11-29 22:08:25,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:08:25,148 INFO L93 Difference]: Finished difference Result 129 states and 138 transitions. [2020-11-29 22:08:25,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-29 22:08:25,148 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 258 [2020-11-29 22:08:25,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:08:25,150 INFO L225 Difference]: With dead ends: 129 [2020-11-29 22:08:25,150 INFO L226 Difference]: Without dead ends: 128 [2020-11-29 22:08:25,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2020-11-29 22:08:25,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-11-29 22:08:25,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-11-29 22:08:25,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-11-29 22:08:25,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 137 transitions. [2020-11-29 22:08:25,159 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 137 transitions. Word has length 258 [2020-11-29 22:08:25,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:08:25,162 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 137 transitions. [2020-11-29 22:08:25,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-11-29 22:08:25,162 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 137 transitions. [2020-11-29 22:08:25,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2020-11-29 22:08:25,170 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:08:25,170 INFO L422 BasicCegarLoop]: trace histogram [43, 40, 35, 22, 22, 22, 22, 20, 20, 20, 20, 20, 20, 20, 19, 19, 13, 8, 1, 1, 1, 1] [2020-11-29 22:08:25,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:08:25,390 INFO L429 AbstractCegarLoop]: === Iteration 21 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:08:25,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:08:25,390 INFO L82 PathProgramCache]: Analyzing trace with hash 703496626, now seen corresponding path program 10 times [2020-11-29 22:08:25,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:08:25,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525226506] [2020-11-29 22:08:25,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:08:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:25,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-11-29 22:08:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:25,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:25,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:25,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:25,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:25,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:25,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:25,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:25,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:25,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:25,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:25,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-29 22:08:25,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:25,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-29 22:08:25,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:25,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:25,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:25,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:25,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-11-29 22:08:25,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:25,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:25,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:25,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:25,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:25,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:25,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:25,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-29 22:08:25,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:25,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-11-29 22:08:25,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:26,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:26,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:26,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:26,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:26,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:26,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:26,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:26,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-29 22:08:26,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:26,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-29 22:08:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:26,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:26,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:26,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-11-29 22:08:26,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:26,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:26,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:26,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:26,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:26,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:26,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:26,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:26,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:26,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:26,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:26,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-29 22:08:26,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:26,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-29 22:08:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:26,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:26,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:26,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:26,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:26,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-11-29 22:08:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:26,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:26,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:26,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:26,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:26,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:26,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-29 22:08:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:26,481 INFO L134 CoverageAnalysis]: Checked inductivity of 5965 backedges. 820 proven. 1093 refuted. 0 times theorem prover too weak. 4052 trivial. 0 not checked. [2020-11-29 22:08:26,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525226506] [2020-11-29 22:08:26,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492237368] [2020-11-29 22:08:26,482 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5c49cd89-899b-4433-83f2-31ee0be8de11/bin/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:08:26,634 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 22:08:26,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:08:26,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 785 conjuncts, 81 conjunts are in the unsatisfiable core [2020-11-29 22:08:26,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:08:27,124 INFO L134 CoverageAnalysis]: Checked inductivity of 5965 backedges. 820 proven. 1093 refuted. 0 times theorem prover too weak. 4052 trivial. 0 not checked. [2020-11-29 22:08:27,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:08:27,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 24 [2020-11-29 22:08:27,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319108253] [2020-11-29 22:08:27,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-29 22:08:27,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:08:27,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-29 22:08:27,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2020-11-29 22:08:27,129 INFO L87 Difference]: Start difference. First operand 128 states and 137 transitions. Second operand 25 states. [2020-11-29 22:08:27,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:08:27,234 INFO L93 Difference]: Finished difference Result 129 states and 137 transitions. [2020-11-29 22:08:27,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-29 22:08:27,235 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 409 [2020-11-29 22:08:27,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:08:27,236 INFO L225 Difference]: With dead ends: 129 [2020-11-29 22:08:27,236 INFO L226 Difference]: Without dead ends: 128 [2020-11-29 22:08:27,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 546 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2020-11-29 22:08:27,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-11-29 22:08:27,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-11-29 22:08:27,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-11-29 22:08:27,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 136 transitions. [2020-11-29 22:08:27,244 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 136 transitions. Word has length 409 [2020-11-29 22:08:27,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:08:27,246 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 136 transitions. [2020-11-29 22:08:27,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-11-29 22:08:27,246 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 136 transitions. [2020-11-29 22:08:27,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2020-11-29 22:08:27,263 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:08:27,263 INFO L422 BasicCegarLoop]: trace histogram [68, 66, 55, 34, 34, 34, 34, 33, 33, 33, 33, 33, 33, 33, 32, 32, 21, 13, 1, 1, 1, 1] [2020-11-29 22:08:27,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:08:27,478 INFO L429 AbstractCegarLoop]: === Iteration 22 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:08:27,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:08:27,478 INFO L82 PathProgramCache]: Analyzing trace with hash 111724450, now seen corresponding path program 11 times [2020-11-29 22:08:27,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:08:27,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307504371] [2020-11-29 22:08:27,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:08:27,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:27,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:27,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:27,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:27,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:27,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:27,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:28,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:28,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:28,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:28,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:28,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-29 22:08:28,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-29 22:08:28,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:28,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:28,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-11-29 22:08:28,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:28,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:28,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:28,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-29 22:08:28,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-11-29 22:08:28,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:28,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:28,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:28,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:28,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-29 22:08:28,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-29 22:08:28,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:28,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:28,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-11-29 22:08:28,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:28,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:28,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-29 22:08:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-29 22:08:28,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:28,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-11-29 22:08:28,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:28,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:28,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-29 22:08:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-11-29 22:08:28,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:28,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:28,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:28,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:28,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:28,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:28,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-29 22:08:28,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-29 22:08:28,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:28,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:28,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-11-29 22:08:28,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:28,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:28,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:28,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-29 22:08:28,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:29,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-11-29 22:08:29,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:29,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:29,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:29,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:29,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:29,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:29,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:29,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:29,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-29 22:08:29,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:29,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-29 22:08:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:29,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:29,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:29,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:29,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:29,496 INFO L134 CoverageAnalysis]: Checked inductivity of 15678 backedges. 2390 proven. 2946 refuted. 0 times theorem prover too weak. 10342 trivial. 0 not checked. [2020-11-29 22:08:29,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307504371] [2020-11-29 22:08:29,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378712651] [2020-11-29 22:08:29,496 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5c49cd89-899b-4433-83f2-31ee0be8de11/bin/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:08:29,821 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2020-11-29 22:08:29,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:08:29,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 1246 conjuncts, 133 conjunts are in the unsatisfiable core [2020-11-29 22:08:29,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:08:30,629 INFO L134 CoverageAnalysis]: Checked inductivity of 15678 backedges. 2390 proven. 2946 refuted. 0 times theorem prover too weak. 10342 trivial. 0 not checked. [2020-11-29 22:08:30,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:08:30,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 28 [2020-11-29 22:08:30,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219172972] [2020-11-29 22:08:30,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-29 22:08:30,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:08:30,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-29 22:08:30,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=624, Unknown=0, NotChecked=0, Total=812 [2020-11-29 22:08:30,632 INFO L87 Difference]: Start difference. First operand 128 states and 136 transitions. Second operand 29 states. [2020-11-29 22:08:30,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:08:30,821 INFO L93 Difference]: Finished difference Result 129 states and 136 transitions. [2020-11-29 22:08:30,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-29 22:08:30,822 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 658 [2020-11-29 22:08:30,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:08:30,824 INFO L225 Difference]: With dead ends: 129 [2020-11-29 22:08:30,824 INFO L226 Difference]: Without dead ends: 128 [2020-11-29 22:08:30,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 922 GetRequests, 895 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=624, Unknown=0, NotChecked=0, Total=812 [2020-11-29 22:08:30,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-11-29 22:08:30,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-11-29 22:08:30,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-11-29 22:08:30,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 135 transitions. [2020-11-29 22:08:30,831 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 135 transitions. Word has length 658 [2020-11-29 22:08:30,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:08:30,833 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 135 transitions. [2020-11-29 22:08:30,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-11-29 22:08:30,833 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 135 transitions. [2020-11-29 22:08:30,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1065 [2020-11-29 22:08:30,880 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:08:30,880 INFO L422 BasicCegarLoop]: trace histogram [109, 108, 88, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 53, 53, 34, 21, 1, 1, 1, 1] [2020-11-29 22:08:31,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-11-29 22:08:31,102 INFO L429 AbstractCegarLoop]: === Iteration 23 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:08:31,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:08:31,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1256529780, now seen corresponding path program 12 times [2020-11-29 22:08:31,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:08:31,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983354940] [2020-11-29 22:08:31,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:08:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:31,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-29 22:08:31,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:31,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:31,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:31,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:32,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:32,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:32,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:32,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-29 22:08:32,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-29 22:08:32,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:32,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:32,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-11-29 22:08:32,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:32,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:32,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:32,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-29 22:08:32,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-11-29 22:08:32,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:32,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:32,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-29 22:08:32,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-29 22:08:32,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:32,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:32,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-11-29 22:08:32,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:32,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:32,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:32,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-29 22:08:32,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-29 22:08:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:32,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:32,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-11-29 22:08:32,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:32,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:32,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:32,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-29 22:08:32,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2020-11-29 22:08:32,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:32,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:32,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:32,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:32,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:32,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:33,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:33,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-29 22:08:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:33,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-29 22:08:33,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:33,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:33,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:33,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-11-29 22:08:33,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:33,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:33,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:33,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:33,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:33,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:33,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-29 22:08:33,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:33,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-11-29 22:08:33,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:33,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:33,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:33,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:33,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:33,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:33,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:33,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:33,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:33,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-29 22:08:33,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:33,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-29 22:08:33,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:33,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:33,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:33,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 664 [2020-11-29 22:08:33,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:33,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:33,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:33,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:33,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:33,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:33,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:33,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:33,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:33,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:33,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:33,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:33,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:33,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:33,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-29 22:08:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:33,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-29 22:08:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:33,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:33,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:33,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:33,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:33,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-11-29 22:08:33,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:33,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:33,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:33,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:33,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:33,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:33,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:33,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-29 22:08:33,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:33,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-11-29 22:08:33,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:33,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:33,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:33,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:33,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:33,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:33,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:33,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:33,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:33,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-29 22:08:33,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:33,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-29 22:08:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:33,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:33,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:33,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:33,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:34,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-11-29 22:08:34,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:34,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:34,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:34,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:34,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:34,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:34,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:34,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:34,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:34,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:34,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:34,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-29 22:08:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:34,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-29 22:08:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:34,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:34,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:34,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:34,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-11-29 22:08:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:34,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:34,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:34,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:08:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:34,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 22:08:34,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:34,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-29 22:08:34,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:08:35,266 INFO L134 CoverageAnalysis]: Checked inductivity of 41413 backedges. 6686 proven. 7802 refuted. 0 times theorem prover too weak. 26925 trivial. 0 not checked. [2020-11-29 22:08:35,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983354940] [2020-11-29 22:08:35,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756249123] [2020-11-29 22:08:35,267 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5c49cd89-899b-4433-83f2-31ee0be8de11/bin/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:08:35,851 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 83 check-sat command(s) [2020-11-29 22:08:35,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:08:35,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 1997 conjuncts, 217 conjunts are in the unsatisfiable core [2020-11-29 22:08:35,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:08:37,352 INFO L134 CoverageAnalysis]: Checked inductivity of 41413 backedges. 6686 proven. 7802 refuted. 0 times theorem prover too weak. 26925 trivial. 0 not checked. [2020-11-29 22:08:37,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:08:37,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 32 [2020-11-29 22:08:37,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936589728] [2020-11-29 22:08:37,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-11-29 22:08:37,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:08:37,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-11-29 22:08:37,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=817, Unknown=0, NotChecked=0, Total=1056 [2020-11-29 22:08:37,357 INFO L87 Difference]: Start difference. First operand 128 states and 135 transitions. Second operand 33 states. [2020-11-29 22:08:37,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:08:37,584 INFO L93 Difference]: Finished difference Result 128 states and 135 transitions. [2020-11-29 22:08:37,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-29 22:08:37,585 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 1064 [2020-11-29 22:08:37,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:08:37,588 INFO L225 Difference]: With dead ends: 128 [2020-11-29 22:08:37,588 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 22:08:37,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1496 GetRequests, 1465 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=239, Invalid=817, Unknown=0, NotChecked=0, Total=1056 [2020-11-29 22:08:37,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 22:08:37,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 22:08:37,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 22:08:37,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 22:08:37,591 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1064 [2020-11-29 22:08:37,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:08:37,591 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:08:37,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-11-29 22:08:37,592 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 22:08:37,592 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 22:08:37,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-11-29 22:08:37,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 22:08:38,376 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 11 [2020-11-29 22:08:39,006 WARN L193 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 53 [2020-11-29 22:08:39,029 INFO L274 CegarLoopResult]: For program point fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-11-29 22:08:39,029 INFO L274 CegarLoopResult]: For program point fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-11-29 22:08:39,029 INFO L274 CegarLoopResult]: For program point fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-11-29 22:08:39,030 INFO L274 CegarLoopResult]: For program point L19(lines 19 23) no Hoare annotation was computed. [2020-11-29 22:08:39,030 INFO L274 CegarLoopResult]: For program point fibonacciEXIT(lines 16 24) no Hoare annotation was computed. [2020-11-29 22:08:39,030 INFO L274 CegarLoopResult]: For program point L17(lines 17 23) no Hoare annotation was computed. [2020-11-29 22:08:39,030 INFO L274 CegarLoopResult]: For program point fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-11-29 22:08:39,030 INFO L274 CegarLoopResult]: For program point fibonacciFINAL(lines 16 24) no Hoare annotation was computed. [2020-11-29 22:08:39,030 INFO L274 CegarLoopResult]: For program point fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-11-29 22:08:39,030 INFO L274 CegarLoopResult]: For program point fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-11-29 22:08:39,030 INFO L277 CegarLoopResult]: At program point fibonacciENTRY(lines 16 24) the Hoare annotation is: true [2020-11-29 22:08:39,030 INFO L274 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-11-29 22:08:39,030 INFO L274 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-11-29 22:08:39,031 INFO L270 CegarLoopResult]: At program point L22-2(line 22) the Hoare annotation is: (and (not (<= |fibonacci_#in~n| 1)) (or (not (<= |fibonacci_#in~n| 9)) (= fibonacci_~n |fibonacci_#in~n|))) [2020-11-29 22:08:39,031 INFO L274 CegarLoopResult]: For program point L22-3(line 22) no Hoare annotation was computed. [2020-11-29 22:08:39,031 INFO L274 CegarLoopResult]: For program point L22-4(line 22) no Hoare annotation was computed. [2020-11-29 22:08:39,031 INFO L274 CegarLoopResult]: For program point L22-5(line 22) no Hoare annotation was computed. [2020-11-29 22:08:39,031 INFO L270 CegarLoopResult]: At program point L22-6(line 22) the Hoare annotation is: (let ((.cse0 (<= 1 |fibonacci_#t~ret7|))) (and (not (<= |fibonacci_#in~n| 1)) (or (= |fibonacci_#t~ret7| 1) (not (<= |fibonacci_#in~n| 3))) (or (<= |fibonacci_#t~ret7| 5) (not (<= |fibonacci_#in~n| 6))) (or (not (<= |fibonacci_#in~n| 9)) (not (<= 9 |fibonacci_#in~n|)) (and (<= |fibonacci_#t~ret7| 21) (<= 9 fibonacci_~n) .cse0 (<= fibonacci_~n |fibonacci_#in~n|))) (or (<= |fibonacci_#t~ret7| 3) (not (<= |fibonacci_#in~n| 5))) (or (<= |fibonacci_#t~ret7| 8) (not (<= |fibonacci_#in~n| 7))) (or (<= |fibonacci_#t~ret7| 2) (not (<= |fibonacci_#in~n| 4))) (or (not (<= |fibonacci_#in~n| 8)) (and (<= |fibonacci_#t~ret7| 13) (= fibonacci_~n |fibonacci_#in~n|) .cse0)))) [2020-11-29 22:08:39,031 INFO L274 CegarLoopResult]: For program point L22-7(line 22) no Hoare annotation was computed. [2020-11-29 22:08:39,031 INFO L274 CegarLoopResult]: For program point L22-8(line 22) no Hoare annotation was computed. [2020-11-29 22:08:39,031 INFO L274 CegarLoopResult]: For program point L22-9(line 22) no Hoare annotation was computed. [2020-11-29 22:08:39,032 INFO L274 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-11-29 22:08:39,032 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 22:08:39,032 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 22:08:39,032 INFO L274 CegarLoopResult]: For program point L30(lines 30 34) no Hoare annotation was computed. [2020-11-29 22:08:39,032 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 22:08:39,032 INFO L270 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 9) (<= 9 ULTIMATE.start_main_~x~0)) [2020-11-29 22:08:39,032 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 22:08:39,032 INFO L274 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2020-11-29 22:08:39,032 INFO L270 CegarLoopResult]: At program point L27(lines 27 35) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 9) [2020-11-29 22:08:39,032 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-29 22:08:39,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 10:08:39 BoogieIcfgContainer [2020-11-29 22:08:39,048 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 22:08:39,048 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:08:39,049 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:08:39,049 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:08:39,049 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:08:05" (3/4) ... [2020-11-29 22:08:39,053 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 22:08:39,059 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibonacci [2020-11-29 22:08:39,064 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-29 22:08:39,064 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 22:08:39,064 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 22:08:39,064 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 22:08:39,113 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5c49cd89-899b-4433-83f2-31ee0be8de11/bin/uautomizer/witness.graphml [2020-11-29 22:08:39,114 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:08:39,115 INFO L168 Benchmark]: Toolchain (without parser) took 34064.37 ms. Allocated memory was 83.9 MB in the beginning and 1.3 GB in the end (delta: 1.2 GB). Free memory was 50.7 MB in the beginning and 1.0 GB in the end (delta: -975.0 MB). Peak memory consumption was 272.9 MB. Max. memory is 16.1 GB. [2020-11-29 22:08:39,115 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 83.9 MB. Free memory was 42.3 MB in the beginning and 42.2 MB in the end (delta: 67.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:08:39,115 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.32 ms. Allocated memory is still 83.9 MB. Free memory was 50.6 MB in the beginning and 60.9 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:08:39,116 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.81 ms. Allocated memory is still 83.9 MB. Free memory was 60.9 MB in the beginning and 59.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:08:39,116 INFO L168 Benchmark]: Boogie Preprocessor took 19.31 ms. Allocated memory is still 83.9 MB. Free memory was 59.7 MB in the beginning and 58.8 MB in the end (delta: 893.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:08:39,117 INFO L168 Benchmark]: RCFGBuilder took 381.68 ms. Allocated memory is still 83.9 MB. Free memory was 58.4 MB in the beginning and 46.2 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 22:08:39,117 INFO L168 Benchmark]: TraceAbstraction took 33309.10 ms. Allocated memory was 83.9 MB in the beginning and 1.3 GB in the end (delta: 1.2 GB). Free memory was 45.9 MB in the beginning and 1.0 GB in the end (delta: -982.0 MB). Peak memory consumption was 267.5 MB. Max. memory is 16.1 GB. [2020-11-29 22:08:39,117 INFO L168 Benchmark]: Witness Printer took 65.28 ms. Allocated memory is still 1.3 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:08:39,120 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 83.9 MB. Free memory was 42.3 MB in the beginning and 42.2 MB in the end (delta: 67.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 249.32 ms. Allocated memory is still 83.9 MB. Free memory was 50.6 MB in the beginning and 60.9 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.81 ms. Allocated memory is still 83.9 MB. Free memory was 60.9 MB in the beginning and 59.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.31 ms. Allocated memory is still 83.9 MB. Free memory was 59.7 MB in the beginning and 58.8 MB in the end (delta: 893.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 381.68 ms. Allocated memory is still 83.9 MB. Free memory was 58.4 MB in the beginning and 46.2 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 33309.10 ms. Allocated memory was 83.9 MB in the beginning and 1.3 GB in the end (delta: 1.2 GB). Free memory was 45.9 MB in the beginning and 1.0 GB in the end (delta: -982.0 MB). Peak memory consumption was 267.5 MB. Max. memory is 16.1 GB. * Witness Printer took 65.28 ms. Allocated memory is still 1.3 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 - 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 - 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 6 specifications checked. All of them hold - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: x <= 9 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 31 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 32.0s, OverallIterations: 23, TraceHistogramMax: 109, AutomataDifference: 8.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 617 SDtfs, 2401 SDslu, 3040 SDs, 0 SdLazy, 4987 SolverSat, 799 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4929 GetRequests, 4513 SyntacticMatches, 3 SemanticMatches, 413 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2042 ImplicationChecksByTransitivity, 7.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=227occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 23 MinimizatonAttempts, 164 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 512 PreInvPairs, 548 NumberOfFragments, 106 HoareAnnotationTreeSize, 512 FomulaSimplifications, 286 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 5 FomulaSimplificationsInter, 1034 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 14.0s InterpolantComputationTime, 7128 NumberOfCodeBlocks, 6916 NumberOfCodeBlocksAsserted, 206 NumberOfCheckSat, 7087 ConstructedInterpolants, 0 QuantifiedInterpolants, 9579233 SizeOfPredicates, 52 NumberOfNonLiveVariables, 6528 ConjunctsInSsa, 652 ConjunctsInUnsatCore, 41 InterpolantComputations, 7 PerfectInterpolantSequences, 112277/138433 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...